Sea Temperature in Kustavi in December

Complete information on the sea temperature range in the Baltic Sea in Kustavi in December. Historical daily data. Climate details for December. 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 December

30°F

MINIMUN

37°F

AVERAGE

45°F

MAXIMUM

Historical Data of Water Temperature in December in Kustavi

Water Temperature Chart for Baltic Sea in Kustavi in December

Sea Temperature Table in Kustavi in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	41°C	41°C	43°C	42°C
Dec 2	41°C	41°C	43°C	42°C
Dec 3	41°C	41°C	43°C	42°C
Dec 4	41°C	41°C	41°C	41°C
Dec 5	41°C	41°C	41°C	41°C
Dec 6	41°C	41°C	41°C	41°C
Dec 7	41°C	39°C	41°C	40°C
Dec 8	41°C	41°C	39°C	41°C
Dec 9	41°C	41°C	39°C	41°C
Dec 10	41°C	39°C	41°C	40°C
Dec 11	41°C	39°C	39°C	40°C
Dec 12	41°C	39°C	41°C	40°C
Dec 13	39°C	39°C	39°C	39°C
Dec 14	39°C	39°C	39°C	39°C
Dec 15	39°C	39°C	39°C	38°C
Dec 16	39°C	37°C	39°C	38°C
Dec 17	39°C	36°C	39°C	37°C
Dec 18	39°C	34°C	37°C	36°C
Dec 19	37°C	36°C	37°C	37°C
Dec 20	39°C	34°C	37°C	37°C
Dec 21	37°C	34°C	37°C	36°C
Dec 22	37°C	36°C	37°C	37°C
Dec 23	37°C	36°C	39°C	37°C
Dec 24	37°C	36°C	37°C	37°C
Dec 25	37°C	36°C	37°C	37°C
Dec 26	37°C	36°C	37°C	37°C
Dec 27	37°C	37°C	37°C	37°C
Dec 28	37°C	36°C	37°C	36°C
Dec 29	37°C	36°C	37°C	36°C
Dec 30	36°C	36°C	37°C	36°C

Kustavi Climate and Swimming Opportunities in December

28°F

Average Day Air Temperature

23°F

Average Night Air Temperature

2 in

Precipitation Amount per Month

13 days

Number of Rainy Days

6 hrs

Daylight
per Day

1 hrs

Sunshine
per Day

11 mph

Average Wind Speed

89%

Average
humidity

Kustavi lies within the Western Finland Province in Finland. The average daytime temperature in Kustavi in December is -2°C (28°F), while the nighttime average is -5°C (23°F). There are typically 13 rainy days during the month, with a total precipitation of 62 mm (2.4 inches). The daylight duration in December in Kustavi is 6 hours, with an average of 1 hours of sunshine per day. The average wind speed in December is 18 km/h (11 mph), and the humidity level is around 89%.

The water temperature in Kustavi in December ranges from 2°C to 5°C (36°F to 41°F). At the beginning of the month, the average temperature is around 5°C (41°F), shifting to 4°C (39°F) by mid-December and reaching 2°C (36°F) in the last ten days. Overall, the average sea temperature in Kustavi for December is 4°C (39°F). Swimming in such conditions is extremely dangerous due to the risk of hypothermia and cold shock. Only experienced winter swimmers with proper preparation should attempt it.

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Kustavi

What is the sea temperature in Kustavi in December?

The water temperature in the Baltic Sea in Kustavi in December ranges from 2°C to 5°C (36°F to 41°F).

Is it possible to swim in the Baltic Sea in Kustavi in December?

The average sea temperature in Kustavi in December is 4°C (39°F), and the air temperature is -2°C (28°F), so swimming in such conditions is extremely dangerous due to the risk of hypothermia and cold shock. Only experienced winter swimmers with proper preparation should attempt it.