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Antigua Weather By Month

Antigua climate
Credit: Antigua & Barbuda Tourism Authority

Antigua's average weather maintains high temperatures between the low 80s and high 80s Fahrenheit every month of the year. It also has one dry season and two rainy seasons.

The first rainy season is small and brief. The second one is much bigger because it also is part of the annual Caribbean hurricane season.

Scroll down to see the average weather for each month of the year.

Dry Season

Antigua Climate Chart
MonthMean TemperatureMean Total Rainfall (inch) Mean Number of Rain Days
Jan 72.1 82.8 2.2 10.0
Feb71.8 82.9 1.5 8.0
Mar 72.5 83.5 1.8 8.0
Apr73.9 84.6 2.7 9.0
May 75.7 85.6 4.4 10.0
Jun77.5 86.9 2.0 8.0
July 77.7 87.3 3.4 11.0
Aug77.7 87.6 4.0 13.0
Sep 76.6 87.3 5.6 11.0
Oct75.7 86.7 5.2 13.0
Nov 74.7 85.1 5.3 13.0
Dec73.083.5 3.4 13.0
The dry season goes from January through April when the average rainfall is two inches or less, according to historical records from the Antigua and Barbuda Meteorological Services. June also averages two inches.

It is not well known that much of the Caribbean experiences a brief rainy season in May, and Antigua is no different.

Over a 30-year period, Antigua has averaged about 4.4 inches of rain every May, the meteorological service says. The total isn't especially high by Caribbean standards, but it is more than double the average from January through April plus June.

Hurricane Season

Antigua's hurricane season officially begins June 1 and ends Nov. 30 like the rest of the Caribbean, but most of the rain falls between August and November.

The climate chart shows rainfall in inches. Rain is heaviest in the fall months, especially September, October and November when it averages more than five inches a month.

This coincides with the annual Caribbean hurricane season, which officially begins June 1 and ends Nov. 30.

Days With Rain

The number of rain days increases during hurricane season as well.

How much does it rain? The average monthly number of days with rain ranges between eight and 13 throughout the year. But the amount that falls each month does vary greatly.

On average throughout the year, Antigua climate has about 11 days a month of rain with the high points of 13 days being August and October through December. The lowest average rain days is eight days a month in February, March and June.

Rainfall is only slightly more often than the average in August and October through November, but the amount of rain per day doubles over other months.

Average Monthly Temperatures

Antigua temperatures stay warm throughout the year with average monthly highs during the day in the 80s Fahrenheit and average lows in the 70s at night.

Temperatures vary by only 2 degrees any month of the year, even in winter, according to research from the Antigua and Barbuda Meteorological Service.

So vacations there depend not on the temperatures or how often it rains, but how much it rains and when.


Antigua weather in January
Average rain and high temperatures for Antigua in January. © 2019 Scott S. Bateman
January begins the dry season for many Caribbean islands, and Antigua is no different.

Antigua weather in January is both dry and one of the coolest months of the year. But don't worry, it's usually still warm enough for visiting and swimming.


Antigua is popular during this time of year not only because it is a getaway from northern winters but also because of the low chance of rain.

The average rainfall in January over 30 years is 2.2 inches, the Antigua meteorological service says.

This average is quite low compared to the average throughout the year and compared to other Caribbean islands. But it is not as low as February and March, which average 1.5 and 1.8 inches respectively.

The average number of days with rain is 10, which again is below average for the year but not as low as February and March.

Anyone planning a vacation or cruise to Antigua will find the best weather in March and somewhat better in January.


It shouldn't surprise anyone that the most popular month to visit Antigua is February.

After all, Antigua's February weather experiences the lowest rainfall of the year on average over a 30-year history, the Antigua meteorological service says.


Antigua has experienced an average of only 1.5 inches of rain in February over a 30-year history.

By comparison, it sees more than five inches from September through November during the peak months of the Caribbean hurricane season.

For February, the total days with rain is eight compared to a high point of 13 in August, October and November.

Because the amount of rain in February is light, the average rainfall on any one day is likely to be brief.


One potential downside to February is the temperatures. The average high temperature is 83 degrees Fahrenheit or 23 degrees Celsius. The average low, mainly at night, is 72 degrees F or 22 degrees C.

The high temperatures are warm enough to make daytime touring and other land activities comfortable. But the nighttime temperatures are cool enough to bring down water temperatures to the point where they may feel uncomfortable for swimming, especially in the mornings.

By comparison, the average high temperature continues to climb until it reaches a peak of 88 degrees F or 31 degrees C in August, the hottest month of the year.


Antigua sailboat
Antigua sailboat in sunny weather. Credit: Wikimedia
March is the second most popular month of the year to visit Antigua. Maybe it's a coincidence, but Antigua weather in March also is the second best of the year.


Antigua has had an average of 1.8 inches of rain during March over a 30-year history.

The amount is only slightly more than the 1.5 inches on average in February and well below September, October and November when more than five inches fall each month during the peak time of the Caribbean hurricane season.

The average number of rain days is eight, which is the same as February and the lowest of the year.


Antigua in March may have slightly more rain and is not as popular as February, but it does have slightly better temperatures.

The average high temperatures in March are 83.5 degrees Fahrenheit and 28.6 degrees Celsius or about a half degree warmer than February. That change doesn't sound like much, but it starts to make a difference with water temperatures.

The average low temperatures that usually occur at night are 72.5 degrees Fahrenheit and 22.5 degrees Celsius.


Antigua weather in April
Average high temperature and rain in Antigua in April. © 2019 Scott S. Bateman
Antigua's weather in April historically has been much like every other month on this southeastern Caribbean island.

April in Antigua is about average for rainfall and slightly better than average for daytime temperatures compared to the rest of the Caribbean


Antigua has averaged 2.7 inches of rain in April, which is slightly above the 1.5 to 2.2 inches for the driest part of the year in January through March, the Antigua meteorological service says.

The average also is better than the 4.4 inches in May, which is a brief rainy season for much of the Caribbean. It's even better than the five or more inches in September through November during the main rainy season.

It rains on average about nine days during the month, again slightly higher than the eight days in February, March and June.


Antigua has an average high temperature in April of 84.6 degrees Fahrenheit or 29.2 degrees Celsius. That temperature is about two degrees higher than the lowest of the year and three degrees below the highest point of the year.

The average low is 73.9 degrees F or 23.3 degrees C, which is only two degrees above the low point of the year and five degrees below the high of the year.

April weather in Antigua provides a combination of warming temperatures with lower risks of rain.


St. Johns Antigua
The cruise port at St. Johns sees a drop in visits during May. Credit: Wikimedia
May weather in Antigua usually brings more rainfall than normal for the early part of the year.

For most Caribbean destinations, the month of May is a brief rainy season. Antigua is no exception.

The May rainy season doesn't have the same downpours as September and October during the height of the hurricane season. But historically it brings more rain than any month between December and August when tourism climbs.

Tourism statistics also show that May is a less popular time to visit than seven other months during the year.


The average rainfall in May jumps up to 4.4 inches during the month. The only other months that experience more rain are September through November at more than five inches each.

It rains an average of 10 days in April, which means that the typical rainfall in May is simply heavier on average than the previous four months.


A brighter spot for Antigua weather in May are the temperatures, which continue their climb out of the cooler winter months.

Antigua has average daytime temperatures that range between 83 degrees Fahrenheit in the winter and 87 degrees in the summer.

Although temperatures in the low 80s can be comfortable for land activities, the cooler seawater with strong trade winds can make swimming uncomfortable.

The average high temperature for May falls midway between the year's highs and lows at 85.6 degrees Fahrenheit.

The island's average lows, which take place mainly at night, hover around 75.7 degrees.


Antigua weather in June
Average high temperature and rain in Antigua during June. © 2019 Scott S. Bateman
June has a high temperature of 87 degrees Fahrenheit and rainfall of two inches.

In other words, the weather historically is just about ideal.

These long-term averages from the Antigua and Barbuda Meteorological Service do vary somewhat from year to year. But over time, they show a pattern that makes it easier for vacation planners to come up with a rough estimate about what weather to expect.


The average rainfall of two inches is the same as the two inch average from January through April.

Rain increases in July and keeps increasing to an average of more than five inches each month from September through November. So June is the last dry month of the year.

It rains an average of eight days during June, which also is about the same as February through April. The total increases to 13 days for most months during the rest of the year.


The average daytime temperature of 87 Fahrenheit or about 31 Celsius is just under the warmest months of the year in July, August and September.

The average nighttime temperature is 77 degrees Fahrenheit or about 25 Celsius.

Seawater temperatures stay about midway between the daily highs and lows, so swimming is comfortable most of the day in June.


July weather in Antigua
Average rainfall and high temperatures in Antigua during July. © 2019 Scott S. Bateman
Antigua in July averages three inches of rain and high temperatures of 87 degrees Fahrenheit or about 31 Celsius.

The moderate rain and warm but not too hot temperatures offer one of the better weather patterns for any island in the Caribbean during July.


Although Antigua averages a little more than three inches of rain in July, it's not the best month of the year for rain.

The island has a dry season that goes from January through April with average rainfall of less than three inches a month. February and March have the lowest amounts of the year with less than two inches apiece.

Those two months also average only eight days of rain per month compared to 11 in July.

But July rainfall is better than four inches in August and more than five in September through November during the peak months of the Caribbean hurricane season. They are the worst months to visit Antigua.


July is one of the three hottest months of the year along with August and September. Vacationers who like hot beaches and warm ocean water may prefer visiting this month to take advantage of the temperatures, although the risk of rain is higher.

The average low temperature in July, which takes place mainly at night, is about 78 Fahrenheit or 26 Celsius. Even the lower night temperatures don't go low enough to make the ocean waters too cool for swimming in the morning.


Antigua carnival
Antigua Carnival in August. © Antigua & Barbuda Tourism Authority
Antigua tourism drops in August at the same time the weather gets just a little worse.


Tourists who come to Antigua in August may experience slightly higher rainfall than any month from January through June, except for a bump in May.

The average rainfall during the month is about four inches. It's better than the five or more inches the island usually experiences from September through November at the height of the Caribbean hurricane season.

But the number of days it rains in August is the same as October through December -- an average of 13 days each.


Antigua shares the same consistent temperatures as most other Caribbean destinations.

The average daytime temperature is 87 degrees Fahrenheit or about 31 degrees Celsius. Nighttime temperatures stay moderate with an average of 72 degrees Fahrenheit to 78 degrees.


Antigua sailboats
Antigua skies like this one aren't always sunny in September. Credit: Pixabay public domain
Anyone who likes rain will find that Antigua weather in September has plenty of it.

Anyone who doesn't like rain and wants to go to Antigua should choose another month to visit.


The average historical rainfall in September is nearly six inches, according to the Antigua meteorological service.

That average is the highest of the year. The high point is typical for many islands in the region because September is the most active month for storms and hurricanes during the annual Caribbean hurricane season.

October and November fare only a little better with more than five inches during each month.

Despite the higher rainfall in September, the island has fewer days of rain during the month with an average of 11. August and October through December have an average of 13 days each.


The average daytime high is 87 Fahrenheit or about 31 Celsius. The average low temperature for September is 77 degrees Fahrenheit or 25 Celsius.

Anyone who thinks about visiting Antigua during this month should consider a last-minute vacation after watching the weather forecasts. Storms form in the eastern Atlantic and move west toward the Caribbean.

They are a good indication of the kind of weather that approaches Antigua in September.


Trying to judge Antigua weather in October as either good or bad is a tough call.

Let's just say that it's somewhere in the middle for this popular destination on eastern Caribbean cruises.

October is usually a bad month to visit most destinations in the Caribbean because of the annual hurricane season.

It runs from June through November, but September and October are the worst months for weather with the highest chances of heavy rains or even an occasional hurricane.

Antigua gets its fair share of rain, but other destinations get a lot more.


Antigua's average rainfall in October is a little more than five inches, which is similar to the amount it receives in September and November.

That compares to as much as 10 inches in some other locations, but it isn't as good as the two to three inches the island receives from December through April.

It rains an average of 13 days during the month.

Rainfall is equally bad in September, October and November. So if the decision has been made to visit Antigua or stop there on a cruise in the fall, the odds are slightly less than 50 percent of getting at least some rain during the course of a day.


The average high temperature in October is 87 degrees Fahrenheit and the average low is 77 degrees.

October is the last month of the year with daytime temperatures in the high 80s. They will drop in the coming months to the low 80s.

Antigua has better weather with lower chances of rain in other months during the year, especially in the spring.


Antigua weather in November is wet enough to make most people stay away.

Some islands catch a break in November as the Caribbean hurricane season winds to a close. But not Antigua.


The hurricane season usually reaches its peak of activity in September and October, but Antigua weather generates a nearly equal amount of rain for three months straight.

Total rainfall in November averages about 5.3 inches or nearly identical to the amounts in September and October, according to the Antigua meteorology services.

By comparison, the island has less than three inches of rain from January through April and again in June.

The average number of days it rains is 13, which is slightly lower than the typical Caribbean destination with this much rain.


Staying warm and swimming in comfortable water is rarely a problem in this part of the Caribbean in November. Antigua is no different.

The average daytime temperature in November is about 85 degrees Fahrenheit. The average nighttime temperature is about 75 degrees.

Still, Caribbean travelers should avoid Antigua in November because the risk of rain is too high.

People who visit the island this month usually do so because they take a chance with the weather, they get discounted prices or they don't know that November is a rainy month.

If Antigua sounds appealing and other months are an option, consider going any month from January through June.

If low prices are appealing, consider Antigua in November as part of a last-minute vacation with a weather forecast that looks good.


The rain in Antigua takes a break in December after drenching the island for three months in a row.

Antigua weather in December has a combination of slightly cooler weather and slightly less rain thanks to the end of the Caribbean hurricane season, which officially wraps up on Nov. 30.


Total rainfall for the month averages 3.4 inches, which is heavier than January through June (except for a brief spike in May), according to the Antigua and Barbuda Meteorology Services.

The total is better than the more than five inches each month in September through November.

The average number of days that it rains is 13, which is the same as August, October and November.

By comparison, it rains only eight days in February, March and June.


The average daytime temperature is 83.5 degrees Fahrenheit or only four degrees below the hottest month of the year, which is in August.

The average low temperature is 73 degrees, again about four degrees below the hottest month.

Seawater temperatures will normally feel comfortable enough for swimming.

December is the first month since late summer that visits to the Caribbean start to pick up again.

The threat of hurricanes is nearly non-existent. Tropical storms take place less often. Total rainfall is much lower than the three previous months.

People start to visit again in December to enjoy the warm weather in winter.

Antigua weather in December will deliver on the warmth and the threat of rain is usually lower.
Scott S. Bateman is a professional journalist who has traveled widely throughout the Caribbean and the Americas.

 > Category: Climate   

July 01, 2019
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