The climate in Bornuur during September can be summarized as cool and reasonably dry.
September is in the fall / autumn in Bornuur and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 2°C (35°F) is normal.
| Daytime temperature | 16.3°C 61.3°F | 
|---|---|
| Nightly temperature | 1.9°C 35.4°F | 
| Average temperature | 9.1°C 48.4°F | 
| Daily sunshine | 8.9 hrs | 
| Avg rainfall | 39 mm 1.5 ins | 
| Rainy days | 9 days | 
| Sea temperature | 14.6°C 58.3°F | 
| Humidity | 60% | 
| Windspeed | 9kph 6 mph | 
On average September is the 4th wettest month of the year in Bornuur with around 39mm 1.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.9 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 Bornuur in September 2025.
Best places to visit in September
| Hottest month: | July | 23.5°C 74.3°F | 
|---|---|---|
| Driest month: | January | 3mm 0.1ins | 
| Sunniest month: | February | 7.9hrs | 
| Coldest month: | January | -17.1°C 1.2°F | 
| Wettest month: | July | 86mm 3.4ins |