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Sea Temperature in Naantali in September

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

Water Temperature Range in Naantali in September

50°F

MINIMUN

58°F

AVERAGE

66°F

MAXIMUM

Historical Data of Water Temperature in September in Naantali

Water Temperature Chart for Gulf of Bothnia in Naantali in September

Sea Temperature Table in Naantali in September Over the Past Years

Day202420232022Average
Sep 157°C64°C61°C61°C
Sep 255°C64°C59°C60°C
Sep 357°C64°C61°C61°C
Sep 457°C63°C59°C60°C
Sep 555°C63°C59°C60°C
Sep 655°C63°C57°C60°C
Sep 755°C63°C57°C60°C
Sep 854°C63°C57°C59°C
Sep 954°C63°C57°C59°C
Sep 1055°C61°C57°C59°C
Sep 1154°C61°C57°C58°C
Sep 1254°C61°C57°C58°C
Sep 1354°C59°C57°C58°C
Sep 1455°C59°C59°C59°C
Sep 1554°C59°C57°C58°C
Sep 1655°C59°C59°C59°C
Sep 1755°C59°C57°C58°C
Sep 1854°C57°C57°C57°C
Sep 1954°C57°C57°C57°C
Sep 2054°C57°C57°C57°C
Sep 2154°C55°C57°C57°C
Sep 2252°C55°C57°C56°C
Sep 2354°C55°C57°C56°C
Sep 2452°C55°C57°C56°C
Sep 2552°C55°C57°C56°C
Sep 2652°C55°C57°C56°C
Sep 2752°C55°C55°C55°C
Sep 2852°C55°C55°C55°C
Sep 2952°C55°C55°C55°C
Western Finland Province, FinlandWestern Finland Province, FinlandWestern Finland Province, Finland

Naantali Climate and Swimming Opportunities in September

57°F

Average Day Air Temperature

45°F

Average Night Air Temperature

2 in

Precipitation Amount per Month

11 days

Number of Rainy Days

13 hrs

Daylight
per Day

4 hrs

Sunshine
per Day

10 mph

Average Wind Speed

83%

Average
humidity

Naantali lies within the Western Finland Province in Finland. The average daytime temperature in Naantali in September is 14°C (57°F), while the nighttime average is 7°C (45°F). There are typically 11 rainy days during the month, with a total precipitation of 59 mm (2.3 inches). The daylight duration in September in Naantali is 13 hours, with an average of 4 hours of sunshine per day. The average wind speed in September is 16 km/h (10 mph), and the humidity level is around 83%.

The water temperature in Naantali in September ranges from 13°C to 16°C (55°F to 61°F). At the beginning of the month, the average temperature is around 16°C (61°F), shifting to 15°C (59°F) by mid-September and reaching 13°C (55°F) in the last ten days. Overall, the average sea temperature in Naantali for September is 14°C (57°F). The water is cool, but many swimmers can tolerate it, especially with the sun out. Acclimatization is helpful.

Frequently Asked Questions About Water Temperatures in September in Naantali

What is the sea temperature in Naantali in September?

The water temperature in the Gulf of Bothnia in Naantali in September ranges from 13°C to 16°C (55°F to 61°F).

Is it possible to swim in the Gulf of Bothnia in Naantali in September?

The average sea temperature in Naantali in September is 14°C (57°F), and the air temperature is 14°C (57°F), so the water is cool, but many swimmers can tolerate it, especially with the sun out. Acclimatization is helpful.