Uusikaupunki Weather in September

Uusikaupunki in September sees moderate temperatures, with highs around 16°C (61°F) and overnight lows of 10°C (50°F). Rainfall is fairly high at around 66 mm (2.6 in) on average, so pack waterproofs just in case.

Rainfall in Uusikaupunki in September

The climate data from previous years indicates about 16 days of rain, averaging 66 mm (2.6 in) for the month. With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Uusikaupunki in September

If you're visiting Uusikaupunki in September, expect highs of 16°C (61°F) and overnight lows around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Uusikaupunki in September

With about 154 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

For Uusikaupunki 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.