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Weather in Wellington for September 2026

Your guide to Wellington weather in September - trends and predictions

    Temperatures

  • So far, September 2026 in Wellington is slightly warmer than the historical average by 1 °C.

  • Expect cooler weather in the next days in Wellington with the forecast suggesting a temperature of 21.5 °C, lower than the historical average.

  • In general, the average temperature in Wellington at the beginning of September is 20.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.3 °C by the end of September.

    • Rain 🌧️

  • Wellington experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 27.3 mm.

    • More

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

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/8°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
68 %
Avg humidity

Wellington Weather September

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

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
 21° /8° 0 mm 6
2 Sept. Sunny
Sunny
 24° /8° 0 mm 5
3 Sept. Sunny
Sunny
 20° /8° 1.3 mm 6
4 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 0.2 mm 5
5 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 0.2 mm 5
6 Sept. Sunny
Sunny
 20° /7° 0 mm 6
7 Sept. Sunny
Sunny
 23° /9° 0 mm 6
8 Sept. Sunny
Sunny
 22° /11° 0.1 mm 5
9 Sept. Sunny
Sunny
 23° /10° 0 mm 6
10 Sept. Sunny
Sunny
 22° /9° 0 mm 5
11 Sept. Sunny
Sunny
 22° /9° 0 mm 5
12 Sept. Cloudy
Cloudy
 21° /10° 3.5 mm 4
13 Sept. Sunny
Sunny
 22° /9° 2.2 mm 5
14 Sept. Overcast
Overcast
 19° /9° 2.1 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 3.5 mm 4
16 Sept. Sunny
Sunny
 17° /7° 8.3 mm 5
17 Sept. Partly cloudy
Partly cloudy
 17° /5° 0 mm 6
18 Sept. Sunny
Sunny
 16° /5° 0.7 mm 5
19 Sept. Patchy rain possible
Patchy rain possible
 22° /7° 0.2 mm 6
20 Sept. Sunny
Sunny
 23° /9° 0 mm 6
21 Sept. Sunny
Sunny
 23° /9° 0.6 mm 6
22 Sept. Sunny
Sunny
 23° /11° 2.1 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 24° /11° 0.1 mm 5
24 Sept. Overcast
Overcast
 22° /10° 0 mm 5
25 Sept. Patchy rain possible
Patchy rain possible
 21° /7° 0.8 mm 6
26 Sept. Light rain shower
Light rain shower
 18° /14° 8.2 mm 2.6
27 Sept. Sunny
Sunny
 19° /10° 0 mm 8.4
28 Sept. Overcast
Overcast
 20° /8° 0 mm 7.9
29 Sept. Sunny
Sunny
 25° /11° 0 mm 8.7
30 Sept. Sunny
Sunny
 31° /16° 0 mm 9
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 20° and cooler nights around 8°. 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 27.3 mm across approximately 7 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 14 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 💧
Typically, Wellington has 7 rainy days in September with a total of 27.3 mm of rainfall.

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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