The climate in Ōmnah during September can be summarized as mild and very dry.
September is in the fall / autumn in Ōmnah and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (78°F), whilst at night 9°C (47°F) is normal.
| Daytime temperature | 25.7°C 78.2°F | 
|---|---|
| Nightly temperature | 8.6°C 47.4°F | 
| Average temperature | 17.1°C 62.8°F | 
| Daily sunshine | 11.2 hrs | 
| Avg rainfall | 2 mm 0.1 ins | 
| Rainy days | 1 days | 
| Sea temperature | 23.1°C 73.6°F | 
| Humidity | 40% | 
| Windspeed | 9.7kph 6 mph | 
On average September is the driest month of the year in Ōmnah with around 2mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.2 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 Ōmnah in September 2025.
Best places to visit in September
| Hottest month: | July | 29.4°C 84.9°F | 
|---|---|---|
| Driest month: | September | 2mm 0.1ins | 
| Sunniest month: | September | 11.2hrs | 
| Coldest month: | January | 1.6°C 34.9°F | 
| Wettest month: | March | 64mm 2.5ins |