Grafton Weather in September
What's the weather like in Grafton (New South Wales) in September 2025?
The climate in Grafton during September can be summarized as mild and reasonably dry.
September is in the spring in Grafton and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a comfortable 23°C (74°F), whilst at night 10°C (49°F) is normal.
| Daytime temperature | 23.2°C 73.8°F |
|---|---|
| Nightly temperature | 9.6°C 49.3°F |
| Average temperature | 16.4°C 61.5°F |
| Daily sunshine | 8.7 hrs |
| Avg rainfall | 40 mm 1.6 ins |
| Rainy days | 9 days |
| Sea temperature | 21.1°C 70°F |
| Humidity | 54% |
| Windspeed | 14.4kph 9 mph |
On average September is the driest month of the year in Grafton with around 40mm 1.6 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 8.7 hours of sunshine per day.
September temperatures in Grafton
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 Grafton in September 2025.
Other monthly averages
Best places to visit in September
Grafton weather stats
| Hottest month: | January | 28.8°C 83.8°F |
|---|---|---|
| Driest month: | September | 40mm 1.6ins |
| Sunniest month: | August | 8.5hrs |
| Coldest month: | July | 18.6°C 65.5°F |
| Wettest month: | February | 163mm 6.4ins |
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