Invercargill Weather in May
What's the weather like in Invercargill (Southland) in May 2026?
The climate in Invercargill during May can be summarized as cool and damp.
May is in the fall / autumn in Invercargill and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 12°C (54°F), whilst at night 4°C (39°F) is normal.
| Daytime temperature | 12°C 53.5°F |
|---|---|
| Nightly temperature | 4.1°C 39.3°F |
| Average temperature | 8°C 46.4°F |
| Daily sunshine | 3 hrs |
| Avg rainfall | 112 mm 4.4 ins |
| Rainy days | 22 days |
| Sea temperature | 11.3°C 52.4°F |
| Humidity | 87% |
| Windspeed | 13.7kph 9 mph |
On average May is the 2nd wettest month of the year in Invercargill with around 112mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 22 days, although this may vary considerably.
On the flip side this corresponds to an average of 3 hours of sunshine per day.
May temperatures in Invercargill
May rainfall
May hourly sunshine
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 Invercargill in May 2025.
Other monthly averages
Invercargill weather stats
| Hottest month: | January | 18.4°C 65.1°F |
|---|---|---|
| Driest month: | August | 68mm 2.7ins |
| Sunniest month: | February | 6.1hrs |
| Coldest month: | July | 9.4°C 48.9°F |
| Wettest month: | January | 114mm 4.5ins |
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