Wellington
September
Weather in Wellington for September 2025
Your guide to Wellington weather in September - trends and predictions
In general, the average temperature in Wellington at the beginning of September is 20.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 21 °C by the end of September.
Wellington sees moderate rainfall in September, averaging 9 rainy days.
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21
Dry days
9
Rainy days
0
Snow days
21°/6°
Temperatures
16 km/h
Avg max wind
64 %
Avg humidity
Wellington in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  17° | 3 17° | 4  24° | 5 20° | 6  24° | 7 22° |
| 8  17° | 9 15° | 10 18° | 11 19° | 12  18° | 13 20° | 14 18° |
| 15 20° | 16 19° | 17 20° | 18 21° | 19  24° | 20 18° | 21 16° |
| 22 18° | 23 19° | 24 24° | 25 18° | 26 14° | 27 18° | 28 24° |
| 29 24° | 30 25° |
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Temperatures trend during September in Wellington
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Cloudy | 17° /8° | 0.2 mm | 6 | |
| 2 Sept. | Mist | 17° /4° | 4.6 mm | 5 | |
| 3 Sept. | Mist | 17° /4° | 0 mm | 5 | |
| 4 Sept. | Overcast | 24° /4° | 0.8 mm | 7 | |
| 5 Sept. | Mist | 20° /7° | 15.4 mm | 6 | |
| 6 Sept. | Sunny | 24° /6° | 6.8 mm | 7 | |
| 7 Sept. | Overcast | 22° /7° | 0.4 mm | 6 | |
| 8 Sept. | Light drizzle | 17° /6° | 2.2 mm | 5 | |
| 9 Sept. | Light drizzle | 15° /7° | 0.9 mm | 5 | |
| 10 Sept. | Cloudy | 18° /5° | 0 mm | 5 | |
| 11 Sept. | Cloudy | 19° /6° | 4.1 mm | 6 | |
| 12 Sept. | Partly cloudy | 18° /5° | 0.1 mm | 6 | |
| 13 Sept. | Mist | 20° /5° | 0 mm | 6 | |
| 14 Sept. | Sunny | 18° /6° | 4.1 mm | 6 | |
| 15 Sept. | Partly cloudy | 20° /5° | 0 mm | 6 | |
| 16 Sept. | Sunny | 19° /7° | 0.5 mm | 6 | |
| 17 Sept. | Partly cloudy | 20° /7° | 0 mm | 6 | |
| 18 Sept. | Mist | 21° /6° | 0 mm | 7 | |
| 19 Sept. | Patchy rain possible | 24° /9° | 0.9 mm | 7 | |
| 20 Sept. | Light rain | 18° /7° | 2.4 mm | 6 | |
| 21 Sept. | Light rain shower | 16° /6° | 1.4 mm | 5 | |
| 22 Sept. | Sunny | 18° /6° | 0 mm | 6 | |
| 23 Sept. | Mist | 19° /5° | 0 mm | 6 | |
| 24 Sept. | Mist | 24° /6° | 0 mm | 7 | |
| 25 Sept. | Light rain | 18° /7° | 6.9 mm | 5 | |
| 26 Sept. | Patchy rain possible | 14° /6° | 0.3 mm | 5 | |
| 27 Sept. | Fog | 18° /4° | 0 mm | 6 | |
| 28 Sept. | Sunny | 24° /4° | 0 mm | 7 | |
| 29 Sept. | Sunny | 24° /7° | 2 mm | 7 | |
| 30 Sept. | Sunny | 25° /8° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Wellington in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Wellington forecast closer to your planned date for the most up-to-date weather information.
Wellington in September - FAQ
What are the expected maximum and minimum temperatures in Wellington during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Wellington during September?
In September, Wellington can expect light to moderate rainfall, totaling 47.4 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Wellington during September?
The average wind speed in Wellington during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Wellington
Explore the daily rainfall trends and prepare for Wellingtons September weather 💧
UV exposure in Wellington during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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