Belfast, United Kingdom Weather
Belfast hourly forecast: next 24 hours
Today's high of 62°F (17°C) is right in line with the typical August high of 64°F (18°C).
Current conditions in detail
Belfast weather tomorrow (Tuesday, August 18)
Tomorrow in Belfast looks patchy rain nearby, with a high of 64° and an overnight low of 55°. There is a 57% chance of rain - plan accordingly. Winds top out near 21 mph, and the UV index reaches 3 (moderate).
Belfast 14-day forecast
About the weather in Belfast
Belfast has a oceanic climate, marked by mild temperatures year-round with regular rainfall. Average daytime highs range from about 45°F (7°C) in January to around 65°F (18°C) in July, and the city records roughly 176 days of measurable precipitation a year.
Belfast weather: quick facts
- Hottest month: July - highs near 65°F (18°C)
- Coldest month: January - highs near 45°F (7°C)
- Record high: 81°F (27°C) · Record low: 24°F (-5°C) (2015–2024)
- Wettest month: August (18 rainy days) · Sunniest: June (10.9 h sun/day)
- Climate type: oceanic - mild temperatures year-round with regular rainfall
- Snow: about 3 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 65°F (18°C) and overnight lows stay near 53°F (12°C). The coolest month is January, with typical highs of 45°F (7°C) and lows around 37°F (3°C). Based on 2015–2024 weather data, temperatures have reached as high as 81°F (27°C) and dropped as low as 24°F (-5°C).
Rain, sun and snow
August is usually the wettest month. It brings about 4.1 inches (104 mm) of rain over 18 days, while April is the driest. June brings the most sunshine, averaging 10.9 hours of sun a day. Snow falls on about 3 days in a typical year, mostly from January through March.
Season by season
Spring (March through May)
Spring in Belfast runs cold, with daytime highs averaging 53°F (12°C) and nights around 42°F (5°C); expect showers on roughly 43 days across the season.
Summer (June through August)
Summer in Belfast is crisp but comfortable, with daytime highs averaging 64°F (18°C) and nights around 53°F (12°C); expect showers on roughly 49 days across the season.
Fall (September through November)
Fall in Belfast is mild, with daytime highs averaging 56°F (13°C) and nights around 47°F (8°C); expect showers on roughly 42 days across the season.
Winter (December through February)
Winter in Belfast runs cold, with daytime highs averaging 46°F (8°C) and nights around 38°F (4°C); expect showers on roughly 42 days across the season.
Average temperatures in Belfast by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 45° | 37° | 14 | 2.7 in | 3.8 h/day | 86% |
| February | 47° | 38° | 14 | 3.1 in | 5.4 h/day | 83% |
| March | 49° | 38° | 16 | 3.2 in | 6.8 h/day | 82% |
| April | 52° | 41° | 13 | 2.4 in | 9.0 h/day | 79% |
| May | 58° | 46° | 14 | 2.8 in | 10.5 h/day | 78% |
| June | 63° | 51° | 14 | 3.2 in | 10.9 h/day | 78% |
| July | 65° | 53° | 18 | 3.9 in | 9.8 h/day | 80% |
| August | 64° | 54° | 18 | 4.1 in | 9.3 h/day | 82% |
| September | 61° | 51° | 14 | 3.4 in | 7.7 h/day | 83% |
| October | 56° | 47° | 14 | 3.5 in | 5.7 h/day | 84% |
| November | 50° | 42° | 14 | 3.5 in | 4.1 h/day | 86% |
| December | 47° | 40° | 15 | 3.9 in | 2.9 h/day | 88% |