World Resorts New Zealand Wellington Weather

Wellington weather in September

Weather in Wellington: September

Average day temperature: 54.5°F
Average night temperature: 50.1°F
Sea water temperature: 54.8°F
Number of sunny days: 10 days
Day length: 11.2 - 12.5 hours
Number of rainy days: 4 days
Precipitation totals: 2.5 in.

Air temperature in September, °F

Show year:
2026
2025
2024

The highest day temperature during September of 2026 was 57°F. At the same time the lowest night temperature was 43°F. Daily and nightly averages during September were 52.4°F and 49.1°F.

Sea water temperature in Wellington in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 55.3°F. The highest and lowest sea temperatures during the month were 56.3°F and 54.5°F.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in September is almost equal.

Precipitation total in September, in.

Precipitation total value in Wellington in September is 2.5 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 17.0 mph It makes September most windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 5.7.

Best time for vacation in Wellington

Sunniest months:
January 15 days
February 14 days
March 13 days
Warmest months:
February 66.9 °F
January 66.7 °F
March 64.5 °F
Warmest sea temp:
February 63.0 °F
January 62.3 °F
March 61.7 °F
Coldest months:
August 53.3 °F
July 53.7 °F
September 54.5 °F
Rainiest months:
August 5 days
June 5 days
July 5 days
Windiest months:
September 17.4 mph
October 17.2 mph
November 16.7 mph

Wellington on a weather map

Wellington
+43°F
N 16 mph
Feels like: +36°F
Precip.: 70%
Places in New Zealand:
Name
°F
+43°F
+30°F
+52°F
24 Hours Forecast
Wellington
Local time: 18:18
September 27, sunday
2100
45°F
N
11 mph
September 28, monday
0000
43°F
S
6 mph
0300
45°F
S
14 mph
0600
48°F
SE
19 mph
0900
50°F
SE
13 mph
1200
54°F
SE
9 mph
1500
55°F
SE
18 mph
1800
54°F
E
14 mph
Units of measurement: °C / °F