Östhammar Weather in September

September in Östhammar brings moderate temperatures around 17°C (63°F) during the day, dropping to 9°C (48°F) at night, with some rainfall expected.

Rainfall in Östhammar in September

Historically, September sees about 14 days of rain, with a monthly average of 56 mm (2.2 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Östhammar in September

September in Östhammar brings typical temperatures with highs around 17°C (63°F) and lows of 9°C (48°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

For Östhammar itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.