Swansea

What is the climate like in Swansea?

The best time to visit Swansea is typically July, the year's most comfortable month (6.1/10). Swansea is warmest in August, when daily highs average 65°F (18°C), and coolest in January, when lows fall to about 42°F (5°C). The wettest month is typically December and the driest is April; the year sees roughly 57 in (1445 mm) of precipitation.

• Best time to visitJuly — the year's comfort peak (6.1/10)
• Warmest monthAugust — average high 65°F (18°C)
• Coolest monthJanuary — average low 42°F (5°C)
• Wettest monthDecember (7.0 in (177 mm))
• Driest monthApril (2.7 in (70 mm))
• Annual precipitation57 in (1445 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromAberporth, 71 km away (1973-2025)