Bonaire
Bonaire in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Bonaire in September is climatically well suited to beach holidays and family holidays. The average daily high is around 29 °C, and the sea is about 29 °C. With about 14 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
66/100 · #10
Warmth
#1
Dryness
#10
Sun
#4
Sea warmth
#2
Published best categories: none
Bonaire · SeptemberPhoto: DanielleJWiki · CC BY-SA 4.0Climate facts
- Average high
- 29 °C
- Average low
- 28 °C
- Sea
- 29 °C
- Rainy days (est.)
- 14 rainy days (est.)
- Sun (est.)
- 8 h/day
- Humidity
- 81 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 29 | 28 | 13 | 42 | 8.0 | 82 | 6.3 | 28 | 68 |
| September (selected) | 29 | 28 | 14 | 51 | 7.7 | 81 | 5.8 | 29 | 66 |
| October | 29 | 28 | 17 | 78 | 6.9 | 81 | 5.6 | 29 | 62 |
How do the previous and next months compare?
Baseline: September (66/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | +2 | -0.4 °C | -0.4 °C | -0.5 | -9.3 mm | +0.3 h | +0.9 % | +0.5 m/s | -0.4 °C |
| October | -4 | -0.1 °C | -0.1 °C | +3 | +26.8 mm | -0.8 h | ±0 % | -0.2 m/s | ±0 °C |
All twelve months in context
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Where to stay in Bonaire
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Useful next decisions
Frequently asked questions
How warm is Bonaire in September?
The average daily high is around 29 °C, with an average daily low of about 28 °C.
Can you swim in Bonaire in September?
The sea is about 29 °C (very warm).
Does it rain a lot in Bonaire in September?
The curated estimate is about 14 rainy days per month, not a directly measured long-term average. Total precipitation averages around 51 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Bonaire?
By the climate score, January, February, March and April are the strongest months for Bonaire. For a beach trip: February, March, April and May. September is not among them.