Tonosí Weather in September
What's the weather like in Tonosí (Los Santos) in September 2025?
The climate in Tonosí during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Tonosí and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a steamy 29°C (84°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 28.8°C 83.8°F |
|---|---|
| Nightly temperature | 22.6°C 72.7°F |
| Average temperature | 25.7°C 78.3°F |
| Daily sunshine | 6.1 hrs |
| Avg rainfall | 255 mm 10.1 ins |
| Rainy days | 19 days |
| Sea temperature | 28.3°C 82.9°F |
| Humidity | 83% |
| Windspeed | 8.3kph 5 mph |
On average September is the 4th wettest month of the year in Tonosí with around 255mm 10.1 inches of rain making it a very wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.1 hours of sunshine per day.
September temperatures in Tonosí
September rainfall
September hourly sunshine
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 Tonosí in September 2025.
Other monthly averages
Best places to visit in September
Tonosí weather stats
| Hottest month: | April | 31.6°C 88.9°F |
|---|---|---|
| Driest month: | February | 8mm 0.3ins |
| Sunniest month: | April | 7hrs |
| Coldest month: | November | 28.2°C 82.8°F |
| Wettest month: | October | 367mm 14.4ins |
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