Porto Velho Weather in September
What's the weather like in Porto Velho (Rondônia) in September 2024?
The climate in Porto Velho during September can be summarized as hot, humid and damp.
September is in the spring in Porto Velho and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 21°C (70°F) is normal.
| Daytime temperature | 33°C 91.3°F |
|---|---|
| Nightly temperature | 21.1°C 69.9°F |
| Average temperature | 27°C 80.6°F |
| Daily sunshine | 5.4 hrs |
| Avg rainfall | 112 mm 4.4 ins |
| Rainy days | 9 days |
| Sea temperature | 22.2°C 72°F |
| Humidity | 84% |
| Windspeed | 7.2kph 5 mph |
On average September is the 4th driest month of the year in Porto Velho with around 112mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.4 hours of sunshine per day.
September temperatures in Porto Velho
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 Velho in September 2024.
Other monthly averages
Best places to visit in September
Porto Velho weather stats
| Hottest month: | October | 32.3°C 90.1°F |
|---|---|---|
| Driest month: | July | 28mm 1.1ins |
| Sunniest month: | July | 7.4hrs |
| Coldest month: | June | 30.3°C 86.5°F |
| Wettest month: | December | 315mm 12.4ins |
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