Weather in St Maarten, St Martin in September

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Visiting St Maarten, St Martin in September

The weather in September is slightly warmer than the previous month. September has average maximum temperatures of 31°C (88°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 60.9% making it sunny but overcast at times. The hours of sunshine per day are 7.4hrs making the days quite long and bright. It is a good time for sunbathing in St Maarten.

September has total rainfall of 13.4cm (5.3inches) making it a bit rainy but with only moderate tropical showers. There are 17.3 days with some rainfall so you can still enjoy the beach on the clear days.

Sea temperatures are a very warm 29°C (83°F). September is an excellent month for swimming in St Maarten with very comfortable temperatures for bathing all day. The sea temperature in September is slightly warmer than the previous month.

Consider visiting St Maarten in the months of January, February, March, April, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in St Maarten in September?

Yes, September is a good time for sunbathing in St Maarten.

September has average maximum temperatures of 31°C (88°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 60.9% making it sunny but overcast at times. The hours of sunshine per day are 7.4hrs making the days quite long and bright. September has total rainfall of 13.4cm (5.3inches) making it a bit rainy but with only moderate tropical showers. There are 17.3 days with some rainfall so you can still enjoy the beach on the clear days.

More about September temperature and sunshine.

Can you swim in St Maarten in September?

Yes, September is an excellent month for swimming in St Maarten with very warm sea temperatures 29°C (83°F).

More about September sea temperatures.

Is September a good time to holiday in St Maarten?

Yes, September is a good time for a holiday in St Maarten.

September has average maximum temperatures of 31°C (88°F) which is very hot and perfect for sunbathing on clear days. The sunshine percentage is 60.9% making it sunny but overcast at times. The hours of sunshine per day are 7.4hrs making the days quite long and bright. September has total rainfall of 13.4cm (5.3inches) making it a bit rainy but with only moderate tropical showers. There are 17.3 days with some rainfall so you can still enjoy the beach on the clear days. It is a good time for sunbathing in St Maarten. Sea temperatures are a very warm 29°C (83°F). September is an excellent month for swimming in St Maarten with very comfortable temperatures for bathing all day.

More about the September temperatures and sunshine.

Is St Maarten warm in September?

Yes, St Maarten is very hot and perfect for sunbathing on clear days in September.

The average maximum temperature in St Maarten in September is 31°C (88°F). The average maximum temperature is 31°C (88°) in the previous month and 31°C (87°F) in the next month.

The average temperature in St Maarten in September is 29°C (83°F). The average temperature is 29°C (83°F) in the previous month and 28°C (83°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is St Maarten in September?

The average day light hours per day in St Maarten in September are 12.2. The sunshine percentage is 60.9% making it sunny but overcast at times. The hours of sunshine per day are 7.4hrs making the days quite long and bright.

More about September sunshine.

Temperature in St Maarten in September

The weather in September is slightly warmer than the previous month. The average maximum temperature in St Maarten in September is 31°C (88°F). The average maximum temperature is 31°C (88°F) in the previous month and 31°C (87°F) in the next month.

The average temperature in St Maarten in September is 29°C (83°F). The average temperature is 29°C (83°F) in the previous month and 28°C (83°F) in the next month.

The average minimum temperature in St Maarten in September is 27°C (80°F). The minimum temperature is 26°C (80°F) in the previous month and 26°C (78°F) in the next month.

Sunshine in St Maarten in September

The days in September are marginally shorter than the previous month and days continue to get marginally shorter into October. September has less hours of sunshine than the previous month and hours of sunshine continue to drop slightly into October. During September the average day light hours are 12.2 per day in St Maarten. The sunshine percentage is 60.9% making it sunny but overcast at times. The hours of sunshine per day are 7.4hrs making the days quite long and bright.

The ultraviolet index in St Maarten in September is typically 12.4 during September. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in St Maarten in September

The average sea water temperature in St Maarten in September is 28.5°C (83.3°F) which is very warm and ideal for relaxing and swimming for the whole day. The sea temperature in September is slightly warmer than the previous month.

Rainfall in St Maarten in September

September weather is slightly wetter than the previous month. September has fewer days of rain than the previous month. The average total rainfall in St Maarten in September is 13.4cm (5.3inches) and on average there are 17.3 rainy days in September making it a wet time to visit the beach.

Humidity in St Maarten in September

The maximum dew point (an indicator of humidity) in St Maarten in September is 24°C (76°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning. The dew point is 24°C (76°F) in the previous month and 24°C (24°F) in the next month.

The average maximum relative humidity in St Maarten in September is typically 82.5%. The maximum relative humidity is 82.5% in the previous month and 83.5% in the next month.

The average relative humidity in St Maarten in September is typically 73.3%. The average relative humidity is 73% in the previous month and 74.2% in the next month.

Wind Speed in St Maarten in September

The average maximum wind speed in St Maarten in September is typically 22KM/H (14MPH). The average maximum wind speed is 27KM/H (17MPH) in the previous month and 24KM/H (15MPH) in the next month.

The average wind speed in St Maarten in September is typically 13KM/H (8MPH). The average wind speed is 16KM/H (10MPH) in the previous month and 14KM/H (8MPH) in the next month.

The average wind direction in St Maarten in September is from the East-Southeast.

Monthly Averages

Suggested Beaches in September

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.