Lowlands Weather in September
Lowlands in September sees high daytime temperatures of 30°C (86°F) and nighttime lows of 27°C (81°F). Rainfall is fairly high this month at around 134 mm (5.3 in), so pack a rain jacket to stay dry.
Rainfall in Lowlands in September
This month experiences about 19 days of rain according to historical data, averaging 134 mm (5.3 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Lowlands in September
Daytime highs in Lowlands in September reach 30°C (86°F), with nights around 27°C (81°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights are warm at 27°C (81°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.
Sunshine in Lowlands in September
Expect sunny days throughout the month, with an estimated 232 hours of sunshine. This makes it a pleasant time to visit Lowlands.
Wind Speed in Lowlands in September
Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.
Average water temperature in September
The water is 29°C (84°F) — very warm by most standards. Comfortable to swim in, but not particularly refreshing if you're looking to cool off.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Lowlands. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sint Maarten, check out our Lowlands's climate page.
Lowlands Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Water Temperature
29°C (84°F) *
Chance of Rain
62%
Precipitation
134 mm (5.3 in)
Rainy days
19 days
Humidity
78% *
Windspeed
5 m/s (10 knots) *
Sunshine
232 hours *
Percentage Sunshine
61% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lowlands typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 27°C (81°F).
Average temperatures in September
Historical weather for Lowlands in September
Browse day-by-day weather records for Lowlands spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lowlands historical weather extremes in September
Based on 35 years of weather observations (1990-2025), these are the most extreme conditions recorded in Lowlands.
- The hottest September day on record in Lowlands reached 37°C (99°F) (September 3, 1992).
- Lowlands experienced its chilliest September day on September 4, 2009, reaching only 27°C (81°F).
- Nighttime temperatures dropped to 21°C (70°F) on September 29, 2017, marking the coldest September night on record.
Best Places 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. See all of Sint Maarten in September →
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What to Wear in Lowlands in September
Warm but pleasant conditions in Lowlands in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 29°C (84°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Lowlands in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sint Maarten, check out our Lowlands's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Lowlands climate overview or explore weather in Sint Maarten.
