The climate in Wellington during May can be summarized as hot, humid and wet.
May is in the spring in Wellington and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (86°F), whilst at night 20°C (69°F) is normal.
Daytime temperature | 30°C 85.9°F |
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Nightly temperature | 20.3°C 68.5°F |
Average temperature | 25.1°C 77.2°F |
Daily sunshine | 10 hrs |
Avg rainfall | 148 mm 5.8 ins |
Rainy days | 11 days |
Sea temperature | 26.6°C 79.8°F |
Humidity | 72% |
Windspeed | 16.6kph 10 mph |
On average May is the 6th wettest month of the year in Wellington with around 148mm 5.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 10 hours of sunshine per day.
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 Wellington in May 2025.
Hottest month: | August | 32.1°C 89.8°F |
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Driest month: | December | 56mm 2.2ins |
Sunniest month: | April | 10.3hrs |
Coldest month: | January | 23.5°C 74.3°F |
Wettest month: | September | 210mm 8.3ins |