Nelson Weather in September
What's the weather like in Nelson (Nelson) in September 2025?
The climate in Nelson during September can be summarized as cool and damp.
September is in the spring in Nelson and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 15°C (58°F), whilst at night 5°C (41°F) is normal.
| Daytime temperature | 14.5°C 58°F |
|---|---|
| Nightly temperature | 5°C 40.9°F |
| Average temperature | 9.7°C 49.5°F |
| Daily sunshine | 6.4 hrs |
| Avg rainfall | 111 mm 4.4 ins |
| Rainy days | 13 days |
| Sea temperature | 12.4°C 54.4°F |
| Humidity | 79% |
| Windspeed | 10.8kph 7 mph |
On average September is the 6th driest month of the year in Nelson with around 111mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.4 hours of sunshine per day.
September temperatures in Nelson
September rainfall
September hourly sunshine
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 Nelson in September 2025.
Other monthly averages
Best places to visit in September
Nelson weather stats
| Hottest month: | January | 21.9°C 71.4°F |
|---|---|---|
| Driest month: | February | 77mm 3ins |
| Sunniest month: | February | 8.5hrs |
| Coldest month: | July | 11.3°C 52.3°F |
| Wettest month: | August | 133mm 5.2ins |
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Locations nearby
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