Guaynabo Weather in September
What's the weather like in Guaynabo (Guaynabo) in September 2024?
The climate in Guaynabo during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Guaynabo and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (87°F), whilst at night 23°C (74°F) is normal.
| Daytime temperature | 30.4°C 86.7°F |
|---|---|
| Nightly temperature | 23.4°C 74.1°F |
| Average temperature | 26.9°C 80.4°F |
| Daily sunshine | 8.3 hrs |
| Avg rainfall | 188 mm 7.4 ins |
| Rainy days | 18 days |
| Sea temperature | 29°C 84.2°F |
| Humidity | 77% |
| Windspeed | 14.4kph 9 mph |
On average September is the 2nd wettest month of the year in Guaynabo with around 188mm 7.4 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.3 hours of sunshine per day.
September temperatures in Guaynabo
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 Guaynabo in September 2024.
Other monthly averages
Best places to visit in September
Guaynabo weather stats
| Hottest month: | August | 30.2°C 86.4°F |
|---|---|---|
| Driest month: | March | 79mm 3.1ins |
| Sunniest month: | March | 9.6hrs |
| Coldest month: | February | 26.9°C 80.4°F |
| Wettest month: | August | 195mm 7.7ins |
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