Belfast

What is the climate like in Belfast?

The best time to visit Belfast is typically July – September, with trip comfort peaking in July (6.7/10). Belfast is warmest in July, when daily highs average 77°F (25°C), and coolest in January, when lows fall to about 18°F (-8°C). The wettest month is typically December and the driest is September; the year sees roughly 46 in (1167 mm) of precipitation.

• Best time to visitJuly – September — comfort peaks in July (6.7/10)
• Warmest monthJuly — average high 77°F (25°C)
• Coolest monthJanuary — average low 18°F (-8°C)
• Wettest monthDecember (5.3 in (134 mm))
• Driest monthSeptember (3.1 in (78 mm))
• Annual precipitation46 in (1167 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromBelfast, 4 km away (1901-2022)