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Sea Temperature in Kustavi in September
Complete information on the sea temperature range in the Baltic Sea in Kustavi in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Kustavi. 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 Kustavi in September
50°F
MINIMUN
58°F
AVERAGE
66°F
MAXIMUM
Historical Data of Water Temperature in September in Kustavi
Water Temperature Chart for Baltic Sea in Kustavi in September
Sea Temperature Table in Kustavi in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 59°C | 64°C | 64°C | 63°C |
| Sep 2 | 57°C | 64°C | 63°C | 61°C |
| Sep 3 | 57°C | 64°C | 63°C | 61°C |
| Sep 4 | 55°C | 64°C | 61°C | 60°C |
| Sep 5 | 55°C | 63°C | 59°C | 60°C |
| Sep 6 | 55°C | 63°C | 59°C | 60°C |
| Sep 7 | 55°C | 63°C | 57°C | 60°C |
| Sep 8 | 55°C | 63°C | 57°C | 60°C |
| Sep 9 | 54°C | 63°C | 55°C | 58°C |
| Sep 10 | 55°C | 61°C | 54°C | 58°C |
| Sep 11 | 54°C | 59°C | 54°C | 57°C |
| Sep 12 | 54°C | 61°C | 52°C | 57°C |
| Sep 13 | 54°C | 59°C | 59°C | 58°C |
| Sep 14 | 55°C | 59°C | 59°C | 59°C |
| Sep 15 | 55°C | 59°C | 59°C | 59°C |
| Sep 16 | 55°C | 57°C | 57°C | 57°C |
| Sep 17 | 55°C | 57°C | 57°C | 57°C |
| Sep 18 | 54°C | 57°C | 57°C | 57°C |
| Sep 19 | 54°C | 57°C | 57°C | 57°C |
| Sep 20 | 54°C | 55°C | 55°C | 56°C |
| Sep 21 | 54°C | 55°C | 55°C | 56°C |
| Sep 22 | 52°C | 55°C | 55°C | 55°C |
| Sep 23 | 52°C | 55°C | 54°C | 55°C |
| Sep 24 | 52°C | 55°C | 54°C | 55°C |
| Sep 25 | 52°C | 55°C | 54°C | 55°C |
| Sep 26 | 52°C | 55°C | 52°C | 55°C |
| Sep 27 | 52°C | 55°C | 52°C | 55°C |
| Sep 28 | 52°C | 55°C | 52°C | 54°C |
| Sep 29 | 52°C | 55°C | 52°C | 55°C |
Kustavi 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
Kustavi lies within the Western Finland Province in Finland. The average daytime temperature in Kustavi 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 Kustavi 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 Kustavi in September ranges from 12°C to 17°C (54°F to 63°F). At the beginning of the month, the average temperature is around 16°C (61°F), shifting to 14°C (57°F) by mid-September and reaching 13°C (55°F) in the last ten days. Overall, the average sea temperature in Kustavi 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.
Sea Temperature in September in Nearby Cities
Frequently Asked Questions About Water Temperatures in September in Kustavi
What is the sea temperature in Kustavi in September?
The water temperature in the Baltic Sea in Kustavi in September ranges from 12°C to 17°C (54°F to 63°F).
Is it possible to swim in the Baltic Sea in Kustavi in September?
The average sea temperature in Kustavi 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.