Stockholm vs Helsinki

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Stockholm edges ahead as the better destination in September. Stockholm offers 9 hours of daily sunshine with only 8 rain days, while Helsinki sees 8 sunshine hours and 10 rain days.

Stockholm sits in the comfortable travel range at 16°C. Helsinki is also comfortable at 15°C.

For travelers who prioritize dry weather, Stockholm is the stronger choice in September. Stockholm receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Stockholm reaches an average high of 16°C (61°F) and drops to 10°C (50°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Helsinki averages 15°C (59°F) for the high and 10°C (50°F) for the low, with a daily range of 5°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

Stockholm receives approximately 51 mm of rainfall across 8 rain days during September. You can expect rain roughly every other day.

Helsinki sees 58 mm over 10 rain days. That makes Stockholm the drier option by 2 rain days and 7 mm of total precipitation.

Both cities share similar humidity levels at 65%.