The climate in s'Arenal during September can be summarized as warm, humid and reasonably dry.
September is in the fall / autumn in s'Arenal and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 17°C (62°F) is normal.
| Daytime temperature | 26.5°C 79.7°F |
|---|---|
| Nightly temperature | 16.9°C 62.4°F |
| Average temperature | 21.7°C 71.1°F |
| Daily sunshine | 8.7 hrs |
| Avg rainfall | 50 mm 2 ins |
| Rainy days | 7 days |
| Sea temperature | 25°C 77°F |
| Humidity | 72% |
| Windspeed | 9.7kph 6 mph |
On average September is the 4th wettest month of the year in s'Arenal with around 50mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in s'Arenal in September 2025.
Best places to visit in September
| Hottest month: | August | 28.8°C 83.8°F |
|---|---|---|
| Driest month: | July | 7mm 0.3ins |
| Sunniest month: | August | 10.8hrs |
| Coldest month: | January | 13.5°C 56.3°F |
| Wettest month: | October | 85mm 3.3ins |