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Simpson Bay Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Simpson Bay.
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Climate overview of Simpson Bay
The climate in Simpson Bay, Sint Maarten, is remarkably consistent, with temperatures year-round averaging 28°C (82°F). The warmest month is August at 30°C (86°F), and the coolest is February at 27°C (81°F).
With around 917 mm (36 in) of annual rainfall, the city has moderate precipitation levels. October is the wettest month and March the driest. It also has a distinct dry season from January to March. The sunniest month is August, with 9.5 hours of sunshine per day on average.
Simpson Bay Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Simpson Bay - and find the best time to visit.
Monthly Temperature in Simpson Bay
In Simpson Bay temperatures are generally consistent throughout the year. Typically, average maximum daytime temperatures range from a comfortable 30°C (86°F) in August to a comfortable 27°C (81°F) in the coolest month, February.
Nights vary from 27°C (81°F) in August to around 24°C (75°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Simpson Bay
On average, Simpson Bay receives a reasonable amount of rainfall, with an annual precipitation of 917 mm (36 in). The climate in Simpson Bay shows significant variation throughout the year. Expect high rainfall in October, the wettest month, with an average of 139 mm (5.5 in) of precipitation over 20 rainy days.
In contrast, the driest month March offers drier and sunnier days, with around 32 mm (1.3 in) of rainfall over 13 rainy days. For more details, please visit our Simpson Bay Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Simpson Bay
If you're planning a trip to Simpson Bay, rest assured that sunshine is an important factor. With peak sunshine in August at 9.5 hours daily and a slight dip to 7.7 hours in September, it maintains a sunny destination year-round.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Sint Maarten, Sint Maarten (3 KM, 2 Miles).
Daily hours of sunshine
Data from: Sint Maarten, Sint Maarten (3 KM, 2 Miles).
Daily percentage of sunshine
Data from: Sint Maarten, Sint Maarten (3 KM, 2 Miles).
Water Temperature in Simpson Bay
The mean water temperature over the year ranges from 26°C (79°F) in January to 29°C (84°F) in September.
Water temperature over the year
Data from: Sint Maarten, Sint Maarten (3 KM, 2 Miles).
Humidity in Simpson Bay by Month
The relative humidity is high throughout the year in Simpson Bay.
The city experiences its highest humidity in October, reaching 80%. In February, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Sint Maarten, Sint Maarten (3 KM, 2 Miles).
Wind Speed in Simpson Bay
The mean wind speed varies between 4 m/s (8 knots) and 5 m/s (10 knots) throughout the year. It is lowest in October and November and highest during January, February, March, April, May, June, July, August, September and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Data from: Sint Maarten, Sint Maarten (3 KM, 2 Miles).
Best Time to Visit Simpson Bay
Conditions in Simpson Bay are generally most comfortable in January, February, March, April, May, June, July and December. They are typically least comfortable in September.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
excellent
Feb
excellent
Mar
excellent
Apr
excellent
May
excellent
Jun
excellent
Jul
excellent
Aug
good
Sep
mixed
Oct
very good
Nov
very good
Dec
excellent
- Best overall: January, February, March, April, May, June, July and December
- Warmest weather: May, June, July, August, September, October and November
- Most sunshine: March and August
- Fewer rainy days: February, March, April, May and June
- Best for swimming: Any time of year. The sea stays pleasantly warm year-round.
- Wettest months: July, August, September, October and November, when rainfall is highest.
- Seasonal pattern: A distinct dry season from January to March
Frequently asked questions about the climate in Simpson Bay
What is the best time to visit Simpson Bay?
January, February, March, April, May, June, July and December typically offer the most optimal weather in Simpson Bay. In contrast, September tends to have less optimal conditions. Simpson Bay has a distinct dry season from January to March.
What temperatures can I expect in Simpson Bay?
Daytime highs range from 27°C (81°F) in February to 30°C (86°F) in August. Nighttime lows range from 24°C (75°F) to 27°C (81°F). Temperatures stay relatively stable year-round.
How much rain does Simpson Bay get?
Annual rainfall is around 917 mm (36 in). October is the wettest month with 139 mm (5.5 in), while March is the driest with 32 mm (1.3 in).
How sunny is Simpson Bay?
Simpson Bay receives around 3,023 hours of sunshine per year. August is the sunniest month with 285 hours, while September is the cloudiest with just 232 hours. Overall, Simpson Bay enjoys abundant sunshine.
Simpson Bay 3-Day Forecast
Simpson Bay on the map
Simpson Bay is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Cupecoy
29°C (84°F) Maho Reef29°C (84°F) Koolbaai29°C (84°F) Dawn Beach29°C (84°F) Philipsburg29°C (84°F) Simpson Bay29°C (84°F) Lowlands29°C (84°F) Upper Princeʼs Quarter29°C (84°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Visit the Rainbow Mountains
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