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Caribbean Weather in March: Climate Chart

Nearly Ideal Month Offers Warming Temperatures, Low Risk of Rain

Caribbean weather in March
Temperatures for March Caribbean weather. © 2018 Scott S. Bateman
Caribbean weather in March is one of the best times of the year for island vacations because of warming temperatures and low risk of rain.

Most destinations have an average daytime temperature during the month in the low to mid 80s Fahrenheit and upper 20s Celsius. These high temperatures usually peak in early to mid afternoon.

The average nighttime temperatures range in the low to mid 70s Fahrenheit or lower 20s Celsius, sometimes going even lower.

Water temperatures usually hover about midway the average highs and lows of the day. For the cooler destinations, it is best to wait until afternoon before swimming.

The low risk of rain is another reason why March weather in the Caribbean is appealing for cruise and beach vacationers. Average rainfall in many destinations is only a few inches a month, unlike the annual hurricane season in the fall and late summer. Some destinations then have as much as eight to 10 inches of rain per month.

Western Caribbean in March


March is one of the most popular times of the year to take a western Caribbean cruise because of an ideal combination of warming temperatures and lower risk of rain.

The average high temperature hovers around 85 degrees Fahrenheit or around 29 Celsius for many destinations. Rainfall of two inches or less is common during this dry season.

Two of the most popular western Caribbean islands are Cozumel and Grand Cayman.

The average high temperatures for both islands jump several degrees versus February. Grand Cayman still tends to have cooler nighttime temperatures that may make swimming uncomfortable in the morning.

Both islands have one of the lowest average rainfalls of the year at about one inch apiece.

See average Caribbean weather in: January - February - March - April - May - June - July - August - September - October - November - December

Eastern Caribbean


ForecastsAvg LoAvg HiRain InchesRain Days
Antigua738428
Aruba77860
Bahamas648027
Barbados73842
Belize718525
Bermuda6069 15
Cancun718625
Cayman Islands6687110
Costa Rica60770
Cozumel698814
Curacao78881
Dominica71835
Dominican Rep.728327
Havana688223
Guadeloupe69853
Jamaica708415
Montego Bay708415
Martinique7184414
San Juan728428
St. Lucia7485214
St. Maarten7184414
St. Thomas73861
Trinidad699016
The northernmost destinations in the eastern region such as the Bahamas have the lowest temperatures.

They are good enough for land activities but are sometimes not good enough for swimming. (Note: The Bahamas are technically not part of the Caribbean but often are included in eastern cruises.)

While some destinations have only one inch of rainfall or less, the eastern Caribbean has the two rainiest locations -- Dominica and Martinique at five inches each.

Both islands receive high amounts of rain throughout the year and are known as eco tourism rather than beach destinations.

Another consideration is the rain days or number of days it rains each month. St. Lucia and St. Maarten have about 14 rain days, which is not unusual for most of the region during the year.

But it's well above many other places such as Antigua, Dominican Republic and San Juan.

Southern Caribbean


The warmest place in March is Trinidad, which also is the southernmost island. It has an average daily high of 90 degrees Celsius. But Trinidad is more expensive and takes longer to reach for northerners.

The ABC islands of Aruba, Bonaire and Curacao have the lowest rainfall in the entire Caribbean. They average well under one inch historically.

One of the Best Times to Go


March is an ideal time to vacation in the Caribbean because of warmth and low rainfall.

If it is possible to go on a particular week, consider the later part of the month because temperatures will continue to rise as the region heads into the spring.

In addition, consider the more southern locations because they will typically have the warmest temperatures of all.

More Tips

Caribbean Weather Forecasts

Caribbean Weather in July

Caribbean June Weather

Warmest Islands in December

Caribbean Water Temps

Hurricane Season Tips

Caribbean Temperatures

Caribbean Weather in April

March in the Caribbean

Caribbean Video: November Weather