September weather forecastMerimasku, Finland
September
Weather in September
September arrives in Merimasku with signs of autumn filling the air. The seawater temperature drops to 9.8°C (49.6°F), down from the summertime highs of August, directing towards the onset of the cooler months. Daylight hours decrease quite noticeably from the previous month, leaving fewer hours for sunbathing and outdoor activities. This transition from summer to autumn is marked by breathtaking fall colors, creating a picturesque environment. Residents and tourists enjoy the crisp air, vibrancy of the foliage, and the unique charm of the weather transition.Sea temperature
In September, the average sea temperature in Merimasku, Finland, is 9.8°C (49.6°F).Note: Beware of 9.8°C (49.6°F) waters at 13°C (55.4°F), they're uninviting, and a dip below 10°C (50°F) has risks of breath loss and cold shock, contingent on health.
Daylight
In Merimasku, the average length of the day in September is 12h and 53min.On the first day of September in Merimasku, sunrise is at 06:27 and sunset at 20:37. On the last day of the month, sunrise is at 07:37 and sunset at 19:07 EEST.
Updated: Feb 1, 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 in Merimasku is 9.8°C (49.6°F). Swimming in 9.8°C (49.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
In September, the average day length in Merimasku is 12h and 53min.
On the first day of September, sunrise is at 06:27 and sunset at 20:37. On the last day of the month, sunrise is at 07:37 and sunset at 19:07 EEST.
Average sea temperature in September
Merimasku, Finland
- Average sea temperature in September: 9.8°C
The best month for swimming (with the highest average sea temperature) is August (12.4°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.2°C).
Average daylight in September
Merimasku, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
