Belfast weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Fair
Best time to visit: June – August
What is the weather like in Belfast in June?
In June, Belfast is cool: daytime highs average 15 °C, and nights cool down to about 11 °C. The sea averages 11.1 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 77 mm in total. All in all, June is a so-so month for a holiday in Belfast.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 17 h 14 min04:47 – 22:01
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 72 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/London
How the score comes together
- Temperatureweight 50 %72 %
- Sunshineweight 20 %43 %
- Few rainy daysweight 30 %32 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in June
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Belfast in June: quick answers
Is Belfast hot in June?
No. In June, Belfast is cool: daytime highs average 15 °C and nights drop to about 11 °C.
Can you swim in Belfast in June?
Only if you don't mind cold water: in June the sea averages just 11.1 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Belfast in June?
Rain is frequent, with about 14 rainy days and 77 mm in total.
Belfast month by month
The whole year in BelfastAll destinations: United KingdomWhere to go in JuneSea temperature in June
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences