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Weather in Sint Maarten - 14-day forecast

Detailed weather forecast for Sint Maarten, Netherlands: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Sint Maarten
today🌧️ 30°💧 3.8 mm
Sun🌧️ 30°💧 1.4 mm
Mon🌧️ 28°💧 1.7 mm
Tue🌧️ 28°💧 2.3 mm
Wed🌧️ 28°💧 4.1 mm
Thu🌧️ 28°💧 0.1 mm
Fri☀️ 28°💧 4.5 mm
Sat🌧️ 28°💧 0.5 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Tuesday 8 Sept in Sint Maarten, the forecast high is 28°C. Typical daytime temperatures at this time of year range from 28°C to 29°C, so it will be exceptionally cool. It is cooler than 96% of similar days.

30°Cexceptionally warm
usually 28°C–29°C
warmer than 95% of similar days
night: near normal rain: more rain than usual wind: typical
30°Cexceptionally warm
usually 28°C–29°C
warmer than 94% of similar days
night: near normal rain: typical rainfall wind: typical
28°Cexceptionally cool
usually 28°C–29°C
cooler than 95% of similar days
night: near normal rain: typical rainfall wind: stronger than usual
28°Cexceptionally cool
usually 28°C–29°C
cooler than 96% of similar days
night: cooler than usual rain: typical rainfall wind: exceptionally strong
28°Cexceptionally cool
usually 28°C–29°C
cooler than 94% of similar days
night: near normal rain: more rain than usual wind: exceptionally strong
28°Cexceptionally cool
usually 28°C–29°C
cooler than 92% of similar days
night: near normal rain: less rain than usual wind: exceptionally strong
28°Cexceptionally cool
usually 28°C–29°C
cooler than 92% of similar days
night: warmer than usual rain: more rain than usual wind: stronger than usual

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
25°30°35° 1981: 29°C1982: 28°C1983: 28°C1984: 27°C1985: 28°C1986: 28°C1987: 29°C1988: 29°C1989: 29°C1990: 28°C1991: 28°C1992: 28°C1993: 28°C1994: 29°C1995: 28°C1996: 28°C1997: 28°C1998: 29°C1999: 29°C2000: 29°C2001: 29°C2002: 29°C2003: 29°C2004: 29°C2005: 30°C2006: 29°C2007: 29°C2008: 29°C2009: 29°C2010: 29°C2011: 29°C2012: 29°C2013: 29°C2014: 29°C2015: 29°C2016: 29°C2017: 29°C2018: 29°C2019: 29°C2020: 29°C2021: 30°C2022: 29°C2023: 30°C2024: 30°C2025: 30°C 2026 forecast: 28°C current forecast 28°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 29°C by day. The coolest year was 1984 (27°C) and the warmest was 2023 (30°C). The current forecast averages 28°C - lower than in 73% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Sint Maarten

Sint Maarten - 14-day weather forecast infographic

Sint Maarten 30 & 45-day weather - long-range outlook

Next 15 days · forecast
28°
around 28° at night · days with rain: 13
Weeks 3-4 · avg for September
31°
around 27° at night · rain chance 58%
Weeks 5-7 · avg for October
31°
around 26° at night · rain chance 63%
The 30 & 45-day outlook for Sint Maarten: the next 15 days are a numerical forecast updated daily - on average 28° by day and 28° at night. Further out we rely on multi-year climate averages: around 31° in September, and about 31° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Sint Maarten

Saturday5 September 2026
🌧️30°light rain
sunrise 05:58 · sunset 18:23 · night 28° · evening 29° · rain 3.76 mm · humidity 80% · wind 7 m/s · clouds 62%
Sunday6 September 2026
🌧️30°light rain
sunrise 05:59 · sunset 18:22 · night 28° · evening 28° · rain 1.41 mm · humidity 80% · wind 8 m/s · clouds 25%
Monday7 September 2026
🌧️28°light rain
sunrise 05:59 · sunset 18:21 · night 28° · evening 28° · rain 1.72 mm · humidity 82% · wind 8 m/s · clouds 5%
Tuesday8 September 2026
🌧️28°light rain
sunrise 05:59 · sunset 18:21 · night 28° · evening 28° · rain 2.31 mm · humidity 75% · wind 10 m/s · clouds 7%
Wednesday9 September 2026
🌧️28°light rain
sunrise 05:59 · sunset 18:20 · night 28° · evening 28° · rain 4.1 mm · humidity 82% · wind 10 m/s · clouds 57%
Thursday10 September 2026
🌧️28°light rain
sunrise 05:59 · sunset 18:19 · night 28° · evening 28° · rain 0.12 mm · humidity 79% · wind 10 m/s · clouds 86%
Friday11 September 2026
☀️28°clear sky
sunrise 05:59 · sunset 18:18 · night 28° · evening 28° · rain 4.53 mm · humidity 74% · wind 9 m/s · clouds 9%
Saturday12 September 2026
🌧️28°light rain
sunrise 06:00 · sunset 18:17 · night 28° · evening 28° · rain 0.48 mm · humidity 76% · wind 8 m/s · clouds 100%
Sunday13 September 2026
🌧️28°light rain
sunrise 06:00 · sunset 18:16 · night 28° · evening 28° · rain 4.74 mm · humidity 71% · wind 9 m/s · clouds 99%
Monday14 September 2026
🌧️28°light rain
sunrise 06:00 · sunset 18:15 · night 28° · evening 28° · rain 1.2 mm · humidity 78% · wind 9 m/s · clouds 28%
Tuesday15 September 2026
🌧️28°light rain
sunrise 06:00 · sunset 18:15 · night 28° · evening 28° · rain 1.38 mm · humidity 77% · wind 8 m/s · clouds 89%
Wednesday16 September 2026
🌧️28°light rain
sunrise 06:00 · sunset 18:14 · night 28° · evening 28° · rain 3.84 mm · humidity 79% · wind 10 m/s · clouds 44%
Thursday17 September 2026
☁️28°broken clouds
sunrise 06:00 · sunset 18:13 · night 27° · evening 28° · rain 3.03 mm · humidity 72% · wind 10 m/s · clouds 77%
Friday18 September 2026
🌧️28°moderate rain
sunrise 06:00 · sunset 18:12 · night 27° · evening 27° · rain 7.95 mm · humidity 72% · wind 9 m/s · clouds 8%
Saturday19 September 2026
🌧️28°moderate rain
sunrise 06:01 · sunset 18:11 · night 28° · evening 28° · rain 12.48 mm · humidity 80% · wind 10 m/s · clouds 99%

UV index in Sint Maarten - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTSint Maarten03681111+8.9UV VERY HIGHtoday, daily maxSPF 50, long sleeves and shade between 10:00 and16:00.Unprotected fair skin may burn in about 20 min9Sat5.099Sun6.099Mon7.099Tue8.099Wed9.099Thu10.099Fri11.099Sat12.099Sun13.099Mon14.099Tue15.099Wed16.099Thu17.097Fri18.097Sat19.098Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Sint Maarten is 9 (very high) - unprotected fair skin can burn in about 20 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.

Sea temperature - Sint Maarten

Water today
29°C
Week avg
29°C
Waves today
0.9 m
How's the water?
very warm
16-day sea temperature forecast:
5.09 29°C6.09 29°C7.09 29°C8.09 29°C9.09 29°C10.09 29°C11.09 29°C12.09 29°C13.09 29°C
Average sea temperature through the year:
Jan 27°CFeb 27°CMar 27°CApr 28°CMay 28°CJun 29°CJul 29°CAug 30°CSep 30°COct 30°CNov 29°CDec 28°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Sint Maarten weather through the year

Sint Maarten - annual climate

Warmest, driest months on average: January, February, March, April.

Upcoming public holidays in Netherlands: Christmas Day — 25 December · St. Stephen's Day — 26 December · New Year's Day — 1 January.

Nearby and related places

BasseterreSaint CroixCharlotte AmalieFajardoHumacaoCarolinaCaguasAmsterdamSint EustatiusArubaSabaCuraçaoRotterdam

FAQ - Sint Maarten weather

What is the weather like in Sint Maarten today?
Today it is about 30° during the day and 28° at night, light rain.
How far ahead can I check the forecast for Sint Maarten?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.