The climate in Acapulco during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Acapulco and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 23°C (73°F) is normal.
Daytime temperature | 30.7°C 87.3°F |
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Nightly temperature | 22.7°C 72.9°F |
Average temperature | 26.7°C 80.1°F |
Daily sunshine | 5.9 hrs |
Avg rainfall | 357 mm 14 ins |
Rainy days | 16 days |
Sea temperature | 29.7°C 85.5°F |
Humidity | 80% |
Windspeed | 6.1kph 4 mph |
On average September is the wettest month of the year in Acapulco with around 357mm 14 inches of rain making it a very wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
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 Acapulco in September 2025.
Best places to visit in September
Hottest month: | May | 32.2°C 90°F |
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Driest month: | February | 1mm 0ins |
Sunniest month: | February | 8.6hrs |
Coldest month: | January | 30.2°C 86.4°F |
Wettest month: | September | 357mm 14.1ins |