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St. Maarten

St. Maarten Average Monthly Weather

St. Maarten, smallest island in the world shared by two nations, is a mix of Dutch and French cultures that make it a popular destination for eastern and southern Caribbean cruises.

The weather is warm and sunny eight months of the year, but rain is a factor during the other four months. Hurricane Irma in September 2017 badly damaged the island and proved the risk of visiting in hurricane season.

Otherwise, St. Maarten's average weather is warm year-round because it is located in the southern Caribbean and closer to the equator than most islands.

Its southern location and the resulting warmer temperatures than some islands make it a popular destination for cruise and overnight visitors alike. The island has about 2 million cruise and 500,000 overnight visitors every year.

Average Monthly Temperatures


St. Maarten average monthly high temperatures
Data source: Meteorological Service of Netherland Antilles and Aruba. Graphic © Caribeez.com
Historically, July through September are the warmest months of the year with an average high of 89 degrees Fahrenheit or about 32 degrees Celsius, according to the Meteorological Service of Netherland Antilles and Aruba.

June and October are not far behind with average highs of 88 degrees Fahrenheit or about 31 degrees Celsius.

The average monthly high temperature throughout the year is about 86 degrees Fahrenheit and the monthly low is about 77 degrees.

Monthly high temperatures drop to about 84 degrees F or 29 degrees C from December through March. We found temperatures in the upper 80s Fahrenheit during our last visit in December. Water water was slightly cool but comfortable for swimming.

Although the seawater is comfortable enough for swimming year round, it will reach a low point in comfort level from January through March when temperatures reach their lowest point. Swimming is chilly at times in the mornings.

Average Monthly Rainfall


St. Maarten average monthly rainfall
Data source: Meteorological Service of Netherland Antilles and Aruba. Graphic © Caribeez.com
The island receives an average of 3.4 inches of rain per month, but with definite highs and lows during the year.

St. Maarten has about two inches of rain a month from January through April. It jumps to nearly four inches in May and declines in June and July.

May is often a brief rainy season for many Caribbean destinations.

A much longer and heavier period of rain takes place during the annual Caribbean hurricane season, which runs from June through November. St. Maarten receives less rainy than many other locations during that time of year. Hurricane Irma was a rare exception.

June and July maintain an average of two to three inches and August increases to four inches. Rainfall totals more than five inches in September, four inches in October and six inches in November.

Most and Least Popular Months


St. Maarten Climate Chart
MonthJFMAMJJASONDAvg
Avg Max Temp83848586878889898988868587
Avg Min Temp74747475777979797978777577
Rain (inches)3223423454643
Source: Meteorological Service of Netherland Antilles and Aruba
Low rainfall and warm temperatures in the spring help make March and April the most popular months to visit, according to statistics from the Caribbean Tourism Organization. The most unpopular months are September and October, again because of weather.

Rainfall makes September, October and November the riskiest months to visit St. Maarten. March, April, June and July have the lowest risk of heavy rainfall.

 > Category: Climate   

September 15, 2017
January - February - March - May - August - October - November - December"/>


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