Windwardside Weather in September
Windwardside in September sees high daytime temperatures of 30°C (86°F) and nighttime lows of 27°C (81°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.
Rainfall in Windwardside in September
Expect frequent showers this month, so make sure to have an umbrella to keep yourself dry. Rain is expected on roughly 18 days, totalling around 135 mm (5.3 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Windwardside in September
If you're visiting Windwardside in September, expect highs of 30°C (86°F) and overnight lows around 27°C (81°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 27°C (81°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Windwardside. 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 Bonaire, St Eustatius, Saba, check out our Windwardside's climate page.
Windwardside Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
61%
Precipitation
135 mm (5.3 in)
Rainy days
18 days
Humidity
78% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Windwardside typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Windwardside in September
Browse day-by-day weather records for Windwardside spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Windwardside historical weather extremes in September
According to our 35 years of weather records for Windwardside, the following extremes were recorded between 1990 and 2025.
- Windwardside recorded its highest September temperature of 35°C (95°F) on September 1, 2003.
- The lowest daytime temperature in September was 27°C (81°F), recorded on September 17, 2022.
- Nighttime temperatures dropped to 22°C (72°F) on September 15, 2019, marking the coldest September night on record.
Best Places in Bonaire, St Eustatius, Saba in September
Find out more about the weather in Bonaire, St Eustatius, Saba and which places have the best travel conditions in this month. See all of Bonaire, St Eustatius, Saba in September →
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What to Wear in Windwardside in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.What To Do in Windwardside 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 Bonaire, St Eustatius, Saba, check out our Windwardside's climate page.
See the full Windwardside climate overview or explore weather in Bonaire, St Eustatius, Saba.
