Koolbaai weather in September (Sint Maarten)

Is Koolbaai a good destination in September, weather-wise? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

In September, Koolbaai typically experiences high temperatures and high rainfall. During the day, temperatures can climb to about 30°C. At night, they may fall to a cooler 27°C. The average temperatures are warm, but some days will be hotter. Make sure to dress in light, breathable clothing and drink plenty of water.

Precipitation

Koolbaai in September usually receives high rainfall, averaging around 134 mm for the month. Historically, approximately 19 days this month are expected to have rain.

Average sunshine

The city usually sees around 232 hours of sunlight, indicating many sunny days.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Koolbaai. January, February, March, April, May, June, July and December typically offer the best circumstances. While September tends to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Koolbaai climate page with graphs.

 

Koolbaai, monthly averages in September

Min Temperature 27°C  

Max Temperature 30°C  

Water Temperature 29°C *  

Chance of Rain 62%  

Precipitation 134 mm  

Rainy days 19 days  

Humidity 78% *  

Windspeed 18 km/h *  

Sunshine 232 hours *  

Percentage Sunshine 61% *  

Data from: Sint Maarten, Sint Maarten (4 KM, 2 Miles).

Where to go in Sint Maarten in September

Find out more about the weather in Sint Maarten and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. With a water temperature of around 29°C this is a great month to swim so bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Koolbaai.

Our site offers climate and forecast data for every country in the world. Are you going to Sint Maarten? On this website you can find historical weather averages for many cities in Sint Maarten. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.