Wellington weather in May
May in Wellington: cool, rainy, with clean air — a great time to visit.
#8 of 12 months in Wellington · #400 of 604 destinations to visit in May · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Wellington climate normals — May
| Daytime high | 15°C / 59°F | 🙂 cool |
|---|---|---|
| Nighttime low | 13°C / 55°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 89 mm / 3.5 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 11°C / 51°F | |
| Sunshine | 7.1 h/day | |
| Daylight | 9.8 h | |
| Wind | 27 km/h / 17 mph | |
| Air quality (US AQI) | 23 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Wellington in May — FAQ
- Is May a good time to visit Wellington?
- May in Wellington: cool, rainy, with clean air — a great time to visit. It ranks #8 of 12 months for Wellington on SeasonMap's comfort score (77/100).
- What is the weather like in Wellington in May?
- In May, Wellington averages a daily high of 15°C and a low of 12.5°C, with about 89 mm of rain over roughly 10.4 rainy days.
- What is the air quality in Wellington in May?
- Wellington has a mean US Air Quality Index of about 23 in May.