The climate in Romanu during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Romanu and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 12°C (54°F) is normal.
| Daytime temperature | 24.1°C 75.3°F | 
|---|---|
| Nightly temperature | 12°C 53.5°F | 
| Average temperature | 18°C 64.4°F | 
| Daily sunshine | 8 hrs | 
| Avg rainfall | 41 mm 1.6 ins | 
| Rainy days | 6 days | 
| Sea temperature | 21.5°C 70.7°F | 
| Humidity | 74% | 
| Windspeed | 10.8kph 7 mph | 
On average September is the 5th wettest month of the year in Romanu with around 41mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 8 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 Romanu in September 2025.
Best places to visit in September
| Hottest month: | July | 28°C 82.4°F | 
|---|---|---|
| Driest month: | March | 27mm 1.1ins | 
| Sunniest month: | August | 9.9hrs | 
| Coldest month: | January | 1.4°C 34.5°F | 
| Wettest month: | June | 66mm 2.6ins | 
 
	 
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