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Weather in Wellington for September 2025

Your guide to Wellington weather in September - trends and predictions

    Temperatures

  • So far, September 2025 in Wellington is slightly warmer than the historical average by 1.7 °C.

  • The forecast for the next days in Wellington predicts temperatures to be around 21 °C, close to the historical average.

  • In general, the average temperature in Wellington at the beginning of September is 20.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.6 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Wellington experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/7°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Wellington Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
22°
2
Sunny
26°
3
Overcast
21°
4
Patchy rain possible
19°
5
Patchy rain possible
18°
6
Sunny
19°
7
Sunny
21°
8
Patchy rain possible
19°
9
Sunny
20°
10
Sunny
23°
11
Sunny
21°
12
Cloudy
21°
13
Sunny
20°
14
Overcast
20°
15
Patchy rain possible
17°
16
Moderate rain
14°
17
Sunny
16°
18
Sunny
17°
19
Overcast
22°
20
Cloudy
21°
21
Sunny
20°
22
Patchy rain possible
18°
23
Sunny
19°
24
Patchy rain possible
14°
25
Sunny
23°
26
Sunny
27°
27
Partly cloudy
31°
28
Sunny
28°
29
Sunny
25°
30
Light rain shower
10°

Temperatures trend during September in Wellington

See the weather trend as well as the moving average line

September weather in Wellington day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 22° /8° 0 mm 7
2 Sept. Sunny
Sunny
 26° /8° 0 mm 8
3 Sept. Overcast
Overcast
 21° /9° 0.4 mm 7
4 Sept. Patchy rain possible
Patchy rain possible
 19° /9° 0.2 mm 6
5 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 0.3 mm 5
6 Sept. Sunny
Sunny
 19° /5° 0 mm 7
7 Sept. Sunny
Sunny
 21° /7° 0 mm 6
8 Sept. Patchy rain possible
Patchy rain possible
 19° /8° 0.2 mm 6
9 Sept. Sunny
Sunny
 20° /8° 0 mm 7
10 Sept. Sunny
Sunny
 23° /7° 0 mm 7
11 Sept. Sunny
Sunny
 21° /8° 0 mm 6
12 Sept. Cloudy
Cloudy
 21° /8° 0 mm 6
13 Sept. Sunny
Sunny
 20° /8° 0 mm 7
14 Sept. Overcast
Overcast
 20° /7° 0 mm 6
15 Sept. Patchy rain possible
Patchy rain possible
 17° /7° 0.2 mm 5
16 Sept. Moderate rain
Moderate rain
 14° /5° 10.1 mm 1
17 Sept. Sunny
Sunny
 16° /4° 0 mm 1.7
18 Sept. Sunny
Sunny
 17° /4° 0 mm 1.7
19 Sept. Overcast
Overcast
 22° /7° 0 mm 1.6
20 Sept. Cloudy
Cloudy
 21° /10° 0 mm 1.9
21 Sept. Sunny
Sunny
 20° /9° 0 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 18° /6° 0.1 mm 4
23 Sept. Sunny
Sunny
 19° /8° 0 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
 14° /9° 2.7 mm 4
25 Sept. Sunny
Sunny
 23° /9° 0 mm 5
26 Sept. Sunny
Sunny
 27° /9° 0 mm 6
27 Sept. Partly cloudy
Partly cloudy
 31° /14° 0 mm 7
28 Sept. Sunny
Sunny
 28° /13° 0 mm 6
29 Sept. Sunny
Sunny
 25° /12° 0 mm 6
30 Sept. Light rain shower
Light rain shower
 10° /3° 8.4 mm 4
Next
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.
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Wellington in September - FAQ

What are the expected maximum and minimum temperatures in Wellington during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 7°. 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 39.1 mm across approximately 5 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 15 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 ☀️

Quick links

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Location coordinates Where is Wellington?

Get accurate weather forecasts for Wellington, located at latitude -33.64 and longitude 19.011. Stay updated with localized weather information tailored for Wellington.

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