Belfast weather in June
June in Belfast: nice, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Belfast · #313 of 897 destinations to visit in June · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Belfast in June
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Belfast climate normals — June
| Daytime high | 17°C / 62°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 53°F | |
| Rainfall | 79 mm / 3.1 in | 🌦 some rain |
| Rainy days | 16 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 11°C / 52°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 17.2 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Belfast in June — FAQ
- Is June a good time to visit Belfast?
- June in Belfast: nice, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Belfast on SeasonMap's comfort score (87/100).
- What is the weather like in Belfast in June?
- In June, Belfast averages a daily high of 16.6°C and a low of 11.7°C, with about 78.5 mm of rain over roughly 15.8 rainy days.
- What is the air quality in Belfast in June?
- Belfast has a mean US Air Quality Index of about 38 in June.