Porto Novo Weather in September
What's the weather like in Porto Novo (Porto Novo) in September 2025?
The climate in Porto Novo during September can be summarized as hot, humid and reasonably dry.
September is in the fall / autumn in Porto Novo and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 21°C (70°F) is normal.
| Daytime temperature | 27°C 80.6°F |
|---|---|
| Nightly temperature | 21°C 69.8°F |
| Average temperature | 24°C 75.2°F |
| Daily sunshine | 3.4 hrs |
| Avg rainfall | 35 mm 1.4 ins |
| Rainy days | 4 days |
| Sea temperature | 26.5°C 79.6°F |
| Humidity | 78% |
| Windspeed | 16.9kph 11 mph |
On average September is the wettest month of the year in Porto Novo with around 35mm 1.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.4 hours of sunshine per day.
September temperatures in Porto Novo
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 Porto Novo in September 2025.
Other monthly averages
Best places to visit in September
Porto Novo weather stats
| Hottest month: | September | 26.9°C 80.4°F |
|---|---|---|
| Driest month: | March | 1mm 0ins |
| Sunniest month: | October | 4.8hrs |
| Coldest month: | February | 21.9°C 71.4°F |
| Wettest month: | September | 35mm 1.4ins |
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