August Weather in St. Martin / Sint Maarten - 2025

St. Martin is part of the Leeward Islands in the Caribbean Sea. It comprises of two separate countries, divided between its northern French side, called Saint-Martin, and it's southern Dutch side, Sint Maarten. Philipsburg is the capital of the Dutch side, while Marigot is the capital of the French side. The island was sighted on November 11, 1493, by Christopher Columbus, who named it in honor of St. Martin of Tours.

The main industry of the island is tourism. In 2000, the island had about one million visitors annually. About 85% of the workforce was engaged in the tourist industry. Neighboring islands include Anguilla, St Barts, Saba, Statia, Saint Kitts, and Nevis.

August weather in St. Martin / Sint Maarten

To get a good overview of the type of weather you can expect in August in St. Martin / Sint Maarten, we will look at the day and night temperature, minimum and maximum water temperature, and if August is comfortable or humid

Generally, August in St. Martin / Sint Maarten will be really nice. Historical data shows that you can expect an average temperature of around 82°F / 28°C. But due to the extreme humidity it can feel extremely uncomfortable. During the night, it will cool down to around 80°F / 27°C. Many will prefer a location with air conditioning due to the night temperature, and the high humidity level.

St. Martin / Sint Maarten has its share of rainy days in August. You can expect around 19 rainy days, with on average 3.5 inches / 89 mm of rain during the whole month.

But remember that rain can be short and heavy for many tropical locations, particularly during the rainy season. It means that the number of days with rain and the amount of rain can be high, but you will still see many lovely days with a short period of heavy rain.

August weather in St. Martin / Sint Maarten in more detail

To get a better feeling for the type of weather, you can expect in August in St. Martin / Sint Maarten, we will look at the temperature, rain, wind, humidity, water temperature, and sun and clouds

- What will the temperature be in St. Martin / Sint Maarten in August

Generally, you can expect in August an average temperature of 82°F / 28°C during the day and an average of 80°F / 27°C during the night. In August, during the warmest part of the afternoon, the temperature can often get as high as 82°F / 28°C, and at the end of the night, it can get as low as 78°F / 26°C.

When looking at the whole year, January, February and March are the coldest months, with an average temperature of around 77°F / 25°C. August, September and October are the hottest months, with an average temperature of around 82°F / 28°C. When comparing August with the temperature in the month before and after, this is almost equal to July, which sees an average maximum temperature of around 80°F / 27°C. And equal to September, which sees an average maximum temperature of around 82°F / 28°C.

But average temperatures only tell half of the story. It is also good to check the maximum and minimum temperatures. When looking at the whole year, June, July, August, September, October and November are the hottest months, with a temperature of around 82°F / 28°C. February is the coldest month, with a temperature of around 77°F / 25°C. When comparing August with the temperature in the month before and after, this is equal to July, which sees an average maximum temperature of around 82°F / 28°C. And equal to September, which sees an average maximum temperature of around 82°F / 28°C.

In the following graph, you can see how many cold and hot days you can expect in St. Martin / Sint Maarten each month:

- Can you expect rain in August in St. Martin / Sint Maarten?

Generally, you can expect about 19 rain days in August, with on average 3.5 inches / 89 mm of rain.

When looking at the whole year, February is the dryest month, with an average rainfall of around 1 inches / 25 mmmm. October is the wettest month, with an average rainfall of around 6.6 inches / 168 mmmm. When comparing August with the month before and after, this is a lot more than July, which sees around 2.7 inches / 68 mm of rain. And a lot less than September, which sees around 5.7 inches / 146 mm of rain

If we look at the number of days with rain, February is the month with the least amount of rain days with an average of between 11 and 12 days. October is the month with the most rain days with an average of between 19 and 20 days. When comparing August with the month before and after, this is slightly more than July, which sees around 16 days of rain. And almost equal to September, which sees an average of between 18 and 19 days of rain

There is one thing that is important to know, in many tropical destinations rain can be short and heavy, particularly during the rainy season. It means that the number of days with rain and the amount of rain can be high, but you will still see many lovely days with a short period of heavy rain.

- What will the water temperature be in St. Martin / Sint Maarten for August

You can expect in August, the water temperature for St. Martin / Sint Maarten to be between 86°F / 30°C and 82°F / 28°C.

To compare the water temperature we will use the maximum water temperature. You can expect this temperature on a more sunny day, close to the shore, when the wind does not mix the relatively warmer and colder water.

August and September And have the highest water temperature, withan average of between 86°F / 30°C and 87°F / 31°C. February has the lowest water temperature, with an average of between 78°F / 26°C and 80°F / 27°C. When comparing the water temperature from August with the month before and after, August has a water temperature almost equal to July, with a water temperature of an average of between 84°F / 29°C and 86°F / 30°C. And equal to the water temperature from September, that is an average of between 86°F / 30°C and 87°F / 31°C.

- Can you expect in August a lot of sunny days in St. Martin / Sint Maarten

Generally, you can expect around 11 sunny days in August and around 17 partly sunny days. The remaining days will be cloudy.

When looking at the whole year, March is the month with the highest number of sunny days, with around 18 sunny days. September is the month with the lowest number of sunny days, with around 10 sunny days. When comparing August with the number of sunny days in the month before and after, it is almost equal to July, with an average of between 12 and 13 sunny days. And almost equal to September, with around 10 sunny days

We have looked at the sunny days in St. Martin / Sint Maarten. Let's also look at the cloudy or overcast days. May is the month with the highest number of cloudy days, with an average of between 6 and 7 cloudy days. February is the month with the lowest number of cloudy days, with an average of between 0 and 1 cloudy days. When comparing August with the number of cloudy days in the month before and after, it is equal to July, with around 3 cloudy days. And slightly less than September, with an average of between 5 and 6 cloudy days

- Will it be comfortable in August in St. Martin / Sint Maarten?

Generally, August in St. Martin / Sint Maarten will be extremely humid, and can feel extremely uncomfortable.

We use the humidity and temperature in St. Martin / Sint Maarten to calculate the Wintersun Expert Comfort level for each month. The lower the Wintersun Expert Comfort level, the more comfortable it will be. Only for certain people, extremely dry air can feel slightly uncomfortable.

When looking at the whole year, January has the lowest humidity, with a Wintersun Expert comfort level of "slightly uncomfortable" (moderately humid). July has the highest humidity, with a Wintersun Expert comfort level of "very uncomfortable" (very high humidity). When comparing August with the month before and after, this is almost equal to July, which has a Wintersun Comfort level of "extremely uncomfortable" (extremely humid). And almost equal to September, which has a Wintersun Comfort level of "extremely uncomfortable" (extremely humid)

What to do in St. Martin / Sint Maarten in August

Saint Martin has notable places that are worthwhile visiting:

• Neighboring islands: Anguilla, St Barts, Saba, Statia, Saint Kitts, and Nevis.
• Historic site/landmarks: Fort Louis, Saint Martin of Tours Church, Fort Amsterdam, Philipsburg Courthouse, Mary Star of the Sea Church
• The Beaches: Mullet Bay, Maho Beach, Burgeaux Beach, Simpson Bay West, Kim Sha Beach, Pelican Bay, Cay Bay, Miguel's Hot Beach Spot, Great Bay Beach, Little Bay Beach and Orient Bay Beach amongst others
• Nature & Parks: The Butterfly Farm, Loterie Farm, and The St. Maarten Zoological park.
• Art & Crafts: The Wall of Art, Galerie Escale des Iles

Is it humid in St. Martin / Sint Maarten in August?

A lot of people ask interested in the humidity or relative humidity for St. Martin / Sint Maarten in August. But the real question they want to ask is not about humidity but the amount of moisture in the air. Or better, about comfort. Will it be comfortable in August in St. Martin / Sint Maarten, or will high humidity make it uncomfortable.

To answer this question, we have to look at the dew point. Relative humidity can change a lot in St. Martin / Sint Maarten during the day and night, as it changes when the amount of moisture changes and, but also when the temperature changes. It is a lot less reliable for comfort. Where the dew point only varies with the amount of moisture in the air.

Looking at the dew point, we can see that for the month of August, you can expect that St. Martin / Sint Maarten will be extremely humid, and can feel extremely uncomfortable.

January is the month with the most comfort. It will be moderately humid, and can feel slightly uncomfortable for some. July is the most uncomfortable month. It will be extremely humid, and can feel extremely uncomfortable. In the graph, you can see that there is not a lot of difference between the most comfortable and most uncomfortable months.

Is August a good time to go to St. Martin / Sint Maarten?

Trying to answer the question of whether August is a good time to go to St. Martin / Sint Maarten is not as easy as it first seems. Some people like colder weather, and others prefer a warmer climate. Some are fine with some humidity, and others are not. If your location has air conditioning, the night temperature is less important.

These are some examples. I will try to answer the question with a more generic person in mind. The more detailed information in this article should be enough to check further if this applies to you as well.

If we look at the average temperature for St. Martin / Sint Maarten in August, we can see that it will be fine for most people. In August, you can expect it to be really nice, with an average temperature of around 82°F / 28°C. But due to the extreme humidity it can feel extremely uncomfortable. During the night, it will be around 80°F / 27°C.

As the number of overcast days is not high, you can enjoy the sun with around 11 sunny days and 17 partly sunny days.

The last aspect we will look at is rain. You can expect around 19 rainy days, with on average 3.5 inches / 89 mm of rain during August. More then 5 days rain per month makes the chance higher you will see some rain during a shorter stay. But a day with rain does not mean a day you can not enjoy.

We have looked at the average day temperature, the night temperature, humidity, the number of overcast days, and the rain. We think that August in St. Martin / Sint Maarten is not the most optimal destination. But that doesn't mean it is not a good time for you to go. As said before, each visitor has their own preferences when it comes to the weather.

Does it rain all day in St. Martin / Sint Maarten in August?

In St. Martin / Sint Maarten, it does not rain all day in August. You can expect around 19 rainy days, with on average 3.5 inches / 89 mm of rain during the month.

Another way of looking at the rain is the number of sunny days. For St. Martin / Sint Maarten, there are, on average 11 sunny days and 17 partly sunny days in August. That clearly shows that it is not raining all the time.

And, as for many tropical locations, rain can be short and heavy. This applies particularly during the rainy season. It means that the number of days with rain and the amount of rain can be high, but you will still see many lovely days with a short period of heavy rain.

Is August the rainiest month in St. Martin / Sint Maarten?

August is not the month with the most rainy days, and not the month with the most rain.

To answer what the rainiest month is in St. Martin / Sint Maarten, we will both look at the month with the most rain, and the month with the highest number of rainy days.

October is the month with the the highest number of rainiest days. On average, you can expect 19 days with rain. February is the month with the lowest number of rainy days, with aproximately 11 days.

October is the month with the most rain. This is not equal as the one with the most rainy days. On average, you can expect 6.6 inches / 168 mm of rain. February is the month with the least amount of rain. This is not the same month as the one with the lowest number of rainy days. You can expect approximately 1 inches / 25 mm of rain.

Is August the most sunniest month in St. Martin / Sint Maarten?

August is not the month with the most sunny days, it is the month with the most partly sunny days, and it is not the month with the lowest number of overcast days.

To answer what the sunniest month is in St. Martin / Sint Maarten, we will of course look at the month with the most sunniest days, but also look at the month with the biggest number of days that are sunny or partly sunny.

March is the month with the highest number of sunny days. On average, you can expect 11 sunny days, and 17 partly suny days. September is the month with the lowest number of sunny days.

January is the month with the highest number of sunny days and partly sunny days combined. While September is the month with the lowest number of sunny days and partly sunny days combined.

The last thing we will look at is the number of overcast days. February is the month with the lowest number of overcast days. While May is the month with the highest number of overcast days.

More information about St. Martin / Sint Maarten

Weather in St. Martin / Sint Maarten in other months

• Weather in St. Martin / Sint Maarten for January
• Weather in St. Martin / Sint Maarten for February
• Weather in St. Martin / Sint Maarten for March
• Weather in St. Martin / Sint Maarten for April
• Weather in St. Martin / Sint Maarten for May
• Weather in St. Martin / Sint Maarten for June
• Weather in St. Martin / Sint Maarten for July
• Weather in St. Martin / Sint Maarten for September
• Weather in St. Martin / Sint Maarten for October
• Weather in St. Martin / Sint Maarten for November
• Weather in St. Martin / Sint Maarten for December

What to do in St. Martin / Sint Maarten for each month

• What to do in January in St. Martin / Sint Maarten
• What to do in February in St. Martin / Sint Maarten
• What to do in March in St. Martin / Sint Maarten
• What to do in April in St. Martin / Sint Maarten
• What to do in May in St. Martin / Sint Maarten
• What to do in June in St. Martin / Sint Maarten
• What to do in July in St. Martin / Sint Maarten
• What to do in August in St. Martin / Sint Maarten
• What to do in September in St. Martin / Sint Maarten
• What to do in October in St. Martin / Sint Maarten
• What to do in November in St. Martin / Sint Maarten
• What to do in December in St. Martin / Sint Maarten