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Antigua Average Weather: 1 Dry Season, 2 Wet Seasons

Antigua climate
Credit: Antigua & Barbuda Tourism Authority

Antigua’s average weather maintains high temperatures between the low 80s and high 80s Fahrenheit. 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.

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 Service. 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, according to the Antigua and Barbuda Meteorological Services. 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 that period 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, 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.

By comparison, St. Lucia historically has up to 21 days of rain during September, which is the peak month of the Caribbean hurricane season.

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 Temperatures

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

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

The average monthly low temperature -- typically at night -- averages 75 degrees and again varies only a few degrees each month.

So vacations there depend not on the temperatures or how often it rains, but how much it rains and when.
Scott S. Bateman is a professional journalist who has traveled widely throughout the Caribbean and the Americas.

 > Category: Climate   

September 12, 2017
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