September weather forecastPyhäjoki, Finland
September
Weather in September
September in Pyhäjoki, Finland, marks the move from summer towards fall. With a drop in sea temperature to 12.7°C (54.9°F), there's a noticeable shift from the warm August. This cooler weather gradually descends into October, with its further shortened daylight hours. The weather change in September paints the Finnish landscapes with vibrant fall colors, appealing to all nature lovers.Sea temperature
In Pyhäjoki, the average seawater temperature in September is 12.7°C (54.9°F).Note: If planning to swim in 12.7°C (54.9°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
In Pyhäjoki, the average length of the day in September is 13h and 2min.On the first day of September in Pyhäjoki, sunrise is at 06:05 and sunset at 20:39. On the last day of the month, sunrise is at 07:30 and sunset at 18:54 EEST.
Updated: Jan 31, 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
In September, the average sea temperature is 12.7°C (54.9°F). Swimming in 12.7°C (54.9°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
In Pyhäjoki, Finland, the average day length in September is 13h and 2min.
In September, on the first day of the month, sunrise is at 06:05 and sunset at 20:39. On the last day of the month, in Pyhäjoki, sunrise is at 07:30 and sunset at 18:54 EEST.
Average sea temperature in September
Pyhäjoki, Finland
- Average sea temperature in September: 12.7°C
The best month for swimming (with the highest average sea temperature) is August (16.3°C).
The coldest months (with the lowest average sea temperature) are February and April (-0.3°C).
Average daylight in September
Pyhäjoki, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 6min).
The month with the shortest days is December (Average daylight: 4h and 12min).





