September weather forecast
Philipsburg, Sint Maarten

September signals the transition towards the later part of the year in Philipsburg. Despite the temperature dip to 31°C (87.8°F), it holds a reputation for the highest rainfall of the year, amassing an average of 129mm (5.08"). The city’s climate steers towards a slightly cooler and wetter pattern, still complimented by stable sunshine hours. As the rainy days grow, the fading summer warmth is slowly replaced by the charm of the coming autumn.

Temperature

In Philipsburg, the warmest months are June through October, registering an average high-temperature of 31°C (87.8°F).

Rainfall

The month with the most rainfall is September, when the rain falls for 19 days and typically aggregates up to 129mm (5.08") of precipitation.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 05:57 and sunset at 18:25. On the last day of September, sunrise is at 06:02 and sunset at 18:01 AST.

Sunshine

The months with the least sunshine are January, February, May through July, September through December, with an average of 8h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Philipsburg. A UV Index estimate of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 12 during September morphs into the following directions:
Employ all critical precautions. Guarding against sun damage is essential. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Caution! Sand and water surfaces escalate the UV intensity from the Sun.