Llanelli

What is the climate like in Llanelli?

The best time to visit Llanelli is typically July, the year's most comfortable month (6.0/10). Llanelli is warmest in July, when daily highs average 66°F (19°C), and coolest in January, when lows fall to about 40°F (4°C). The wettest month is typically December and the driest is April; the year sees roughly 58 in (1467 mm) of precipitation.

• Best time to visitJuly — the year's comfort peak (6.0/10)
• Warmest monthJuly — average high 66°F (19°C)
• Coolest monthJanuary — average low 40°F (4°C)
• Wettest monthDecember (6.9 in (176 mm))
• Driest monthApril (3.0 in (75 mm))
• Annual precipitation58 in (1467 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromAberporth, 57 km away (1973-2025)