Bonaire weather

Our guide to the weather in Bonaire during September

29

Average high

6

UV Index

135mm

Monthly rainfall

79%

Humidity

We've looked at the most up-to-date weather data for Bonaire, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Bonaire weather in September.

How warm is it in Bonaire during September?

September is typically the hottest month in Bonaire. The temperature hits about 29℃ during the day, falling away to a balmy 28℃ at night. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Bonaire during September?

On average, there will be 8 rainy days during the month, amounting to 134.7mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a good chance that you'll catch a thunderstorm during your trip.

Is it windy in Bonaire during September?

Expect moderate breeze becoming stronger at times during September, with occasional gusts up to 23mph. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.

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Weather in Bonaire

Our month-by-month guide to the weather and climate in Bonaire

26.7

Bonaire weather in

January
26.4

Bonaire weather in

February
26.5

Bonaire weather in

March
26.9

Bonaire weather in

April
27.5

Bonaire weather in

May
27.8

Bonaire weather in

June
27.9

Bonaire weather in

July
28.4

Bonaire weather in

August
29.1

Bonaire weather in

September
28.8

Bonaire weather in

October
28.4

Bonaire weather in

November
27.6

Bonaire weather in

December