Weather in September
September sees
Espoo,
Finland making a full swing towards autumn, with weather conditions cooling down from
August. The sea temperatures drop to 15.4°C (59.7°F), signalling the transition towards the approaching cooler months. Meanwhile, the cityscape starts taking on a variety of warm hues as trees begin to change color. Despite the cooler temperatures, it's a fantastic time to appreciate the city's natural beauty, with the changing foliage offering breathtaking views.
Sea temperature
In Espoo, Finland, in September, the average water temperature is 15.4°C (59.7°F).
Note: For most individuals, swimming in 15.4°C (59.7°F) is not a pleasurable activity. Breathing becomes progressively more difficult as water temperature declines below 21°C (69.8°F).
Daylight
In September, the average length of the day in Espoo, Finland, is 12h and 52min.
On the first day of September in Espoo, Finland, sunrise is at 06:17 and sunset at 20:25. On the last day of the month, sunrise is at 07:25 and sunset at 18:56 EEST.