Mana Weather in September
What's the weather like in Mana (Guyane) in September 2025?
The climate in Mana during September can be summarized as hot and reasonably dry.
September is in the fall / autumn in Mana and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 33°C (91°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 32.5°C 90.5°F |
|---|---|
| Nightly temperature | 22.3°C 72.1°F |
| Average temperature | 27.4°C 81.3°F |
| Daily sunshine | 8.5 hrs |
| Avg rainfall | 69 mm 2.7 ins |
| Rainy days | 7 days |
| Sea temperature | 28.1°C 82.6°F |
| Humidity | 69% |
| Windspeed | 5kph 3 mph |
On average September is the 2nd driest month of the year in Mana with around 69mm 2.7 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 8.5 hours of sunshine per day.
September temperatures in Mana
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 Mana in September 2025.
Other monthly averages
Best places to visit in September
Mana weather stats
| Hottest month: | September | 32.3°C 90.1°F |
|---|---|---|
| Driest month: | October | 60mm 2.4ins |
| Sunniest month: | October | 8.6hrs |
| Coldest month: | January | 28.9°C 84°F |
| Wettest month: | May | 358mm 14.1ins |
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