Porsgrunn

What is the climate like in Porsgrunn?

The best time to visit Porsgrunn is typically June, the year's most comfortable month (6.2/10). Porsgrunn is warmest in July, when daily highs average 69°F (21°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically September and the driest is April; the year sees roughly 45 in (1154 mm) of precipitation.

• Best time to visitJune — the year's comfort peak (6.2/10)
• Warmest monthJuly — average high 69°F (21°C)
• Coolest monthJanuary — average low 23°F (-5°C)
• Wettest monthSeptember (5.0 in (127 mm))
• Driest monthApril (2.1 in (55 mm))
• Annual precipitation45 in (1154 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromTorp, 34 km away (1959-2026)