September
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.
Note: Swimming in water with a temperature of 15.4°C (59.7°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
On the first day of September, 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.
Sea temperature
In September, the average sea temperature is 15.4°C (59.7°F).Note: Swimming in water with a temperature of 15.4°C (59.7°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
Daylight
The average length of the day in September is 12h and 52min.On the first day of September, 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.
Updated: Aug 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is the water in September?
In Espoo, in September, the average water temperature is 15.4°C (59.7°F). For most, swimming in 15.4°C (59.7°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
What is the average length of the day in September?
In September, the average day length is 12h and 52min.
When is the sunrise / sunset in September?
On the first day of September in Espoo, 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.
Average sea temperature in September
Espoo, Finland
- Average sea temperature in September: 15.4°C
The best month for swimming (with the highest average sea temperature) is August (18.7°C).
The coldest month (with the lowest average sea temperature) is March (0.1°C).
Average daylight in September
Espoo, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
