Climate almanac
Belfast
Northern Ireland, United Kingdom · 54.60°, -5.93°
What is the weather like in Belfast in May?
In May, Belfast is typically 58°F (15°C) during the day and 47°F (8°C) at night. The month brings about 2.5 in (64 mm) of precipitation in total.
- Average high58°F (15°C)
- Average low47°F (8°C)
- Precipitation2.5 in (64 mm)
- Clear or mostly clear days5
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)