Saint-Martin weather

Our guide to the weather in Saint-Martin during May

27

Average high

6

UV Index

172mm

Monthly rainfall

27

Sea temperature

We've looked at the most up-to-date weather data for Saint-Martin, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Saint-Martin weather in May.

How warm is it in Saint-Martin during May?

The temperature is extremely stable in May with average highs of 27℃ and lows just 2℃ lower at 26℃. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Saint-Martin during May?

On average, there will be 7 rainy days during the month, amounting to 172.2mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, May will see just 3 days that produce a storm.

Is it windy in Saint-Martin during May?

Expect moderate breeze becoming stronger at times during May, with occasional gusts up to 19mph. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.

How warm is the sea in Saint-Martin during May?

The water around Saint-Martin reaches a very pleasant 27℃ during May. This is very warm, and will feel bath-like. People who normally feel the cold will find this temperature perfectly acceptable. The hot air temperature and relatively high humidity will mean that you will feel comfortably warm when coming out of the water.

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Weather in Saint-Martin

Our month-by-month guide to the weather and climate in Saint-Martin

26.3

Saint-Martin weather in

January
26.0

Saint-Martin weather in

February
25.9

Saint-Martin weather in

March
26.5

Saint-Martin weather in

April
27.3

Saint-Martin weather in

May
28.2

Saint-Martin weather in

June
28.5

Saint-Martin weather in

July
28.8

Saint-Martin weather in

August
29.1

Saint-Martin weather in

September
28.8

Saint-Martin weather in

October
28.0

Saint-Martin weather in

November
27.0

Saint-Martin weather in

December