Sea Temperature in Mariehamn in August

© Jussi S

Complete information on the sea temperature range in the Baltic Sea in Mariehamn in August. Historical daily data. Climate details for August. Tips on swimming conditions and beach relaxation in Mariehamn. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Mariehamn Climate and Swimming Opportunities in August

Mariehamn lies within the Åland in Finland. The average daytime temperature in Mariehamn in August is 20°C (67°F), while the nighttime average is 12°C (53°F). There are typically 12 rainy days during the month, with a total precipitation of 74 mm (2.9 inches). The daylight duration in August in Mariehamn is 15 hours, with an average of 7 hours of sunshine per day. The average wind speed in August is 14 km/h (9 mph), and the humidity level is around 77%.

The water temperature in Mariehamn in August ranges from 17°C to 19°C (63°F to 66°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 19°C (66°F) by mid-August and reaching 18°C (64°F) in the last ten days. Overall, the average sea temperature in Mariehamn for August is 19°C (66°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Frequently Asked Questions About Water Temperatures in August in Mariehamn