Sundsvall

What is the climate like in Sundsvall?

The best time to visit Sundsvall is typically May – July, with trip comfort peaking in June (6.9/10). Sundsvall is warmest in July, when daily highs average 69°F (21°C), and coolest in January, when lows fall to about 17°F (-8°C). The wettest month is typically August and the driest is April; the year sees roughly 28 in (708 mm) of precipitation.

• Best time to visitMay – July — comfort peaks in June (6.9/10)
• Warmest monthJuly — average high 69°F (21°C)
• Coolest monthJanuary — average low 17°F (-8°C)
• Wettest monthAugust (3.4 in (85 mm))
• Driest monthApril (1.4 in (36 mm))
• Annual precipitation28 in (708 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSundsvalls Flygplats, 16 km away (1955-2026)