SeasonMapKralendijk (Bonaire) weather in September
Bonaire
September in Kralendijk: sweltering, a little rain, with clean air — fine if you can take 38°C afternoons.
#10 of 12 months in Kralendijk · #484 of 1383 destinations to visit in September · comfort 85/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Kralendijk in September
Other months in Kralendijk
Kralendijk's forum calls March part of Bonaire's drier, sunnier stretch, with regulars pointing to the run from January through June as reliably good for beach days and diving the reef. It's a quieter, less crowded window than the busiest holiday months, without giving up much in the way of sunshine.
Add your own note from Kralendijk's card on the map.
Kralendijk climate normals — September
| Daytime high | 33°C / 91°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 28°C / 82°F | |
| Feels like (high) | 38°C / 100°F | |
| Sea temperature | 30°C / 85°F | ♨️ bath-warm |
| Rainfall | 59 mm / 2.3 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 10.8 h/day | |
| Daylight | 12.2 h | |
| Wind | 30 km/h / 19 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Kralendijk in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quiettravelers describe it as quiet, school holidays in 2 of the markets that fill it
Sourced from traveler notes: “…note the island stays noticeably quieter in September, with fewer tourists and some restaurants closed for a slower stretch, though Bo…” — Tripadvisor community
Peak crowdsBusyShoulder seasonQuiet
Best months for Kralendijk's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKralendijk's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Kralendijk in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Sea turtle nesting
1 May – 15 Dec · usuallyHawksbills and loggerheads nest on Klein Bonaire and the windward beaches from May, and the last hatchlings run down the sand around December. Nests are staked and counted rather than fenced off. Source ↗
Where is Kralendijk?
Kralendijk in September — FAQ
- Is September a good time to visit Kralendijk?
- September in Kralendijk: sweltering, a little rain, with clean air — fine if you can take 38°C afternoons. It ranks #10 of 12 months for Kralendijk on SeasonMap's comfort score (85/100).
- What is the weather like in Kralendijk in September?
- In September, Kralendijk averages a daily high of 32.9°C and a low of 27.5°C, with about 59.1 mm of rain over roughly 9.4 rainy days.
- What is the air quality in Kralendijk in September?
- Kralendijk has a mean US Air Quality Index of about 43 in September.