Cardiff weather in June
June in Cardiff: nice, rainy, with clean air — an excellent time to visit.
#3 of 12 months in Cardiff · #271 of 897 destinations to visit in June · comfort 88/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cardiff in June
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Cardiff climate normals — June
| Daytime high | 19°C / 65°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 54°F | |
| Rainfall | 83 mm / 3.3 in | 🌧 rainy |
| Rainy days | 13 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 12°C / 53°F | |
| Sunshine | 10.8 h/day | |
| Daylight | 16.5 h | |
| Wind | 20 km/h / 13 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cardiff in June — FAQ
- Is June a good time to visit Cardiff?
- June in Cardiff: nice, rainy, with clean air — an excellent time to visit. It ranks #3 of 12 months for Cardiff on SeasonMap's comfort score (88/100).
- What is the weather like in Cardiff in June?
- In June, Cardiff averages a daily high of 18.6°C and a low of 12°C, with about 83.4 mm of rain over roughly 13.4 rainy days.
- What is the air quality in Cardiff in June?
- Cardiff has a mean US Air Quality Index of about 39 in June.