The climate in La Asunción during September can be summarized as very hot, humid and reasonably dry.
September is in the fall / autumn in La Asunción and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 23°C (74°F) is normal.
| Daytime temperature | 32.9°C 91.1°F | 
|---|---|
| Nightly temperature | 23.4°C 74°F | 
| Average temperature | 28.1°C 82.6°F | 
| Daily sunshine | 8.2 hrs | 
| Avg rainfall | 48 mm 1.9 ins | 
| Rainy days | 5 days | 
| Sea temperature | 28.6°C 83.5°F | 
| Humidity | 75% | 
| Windspeed | 9.4kph 6 mph | 
On average September is the 4th driest month of the year in La Asunción with around 48mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.2 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 La Asunción in September 2025.
Best places to visit in September
| Hottest month: | September | 32.6°C 90.7°F | 
|---|---|---|
| Driest month: | May | 23mm 0.9ins | 
| Sunniest month: | February | 9hrs | 
| Coldest month: | February | 30.3°C 86.5°F | 
| Wettest month: | December | 128mm 5ins |