What is the current water temperature in Sønderborg?

Q: What is the current water temperature in Sønderborg?

As of now, in Sønderborg, the water temperature is 6.33°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

Denmark > Sønderborg

Water temperature in Sønderborg

Detailed information about the current water temperature in Sønderborg. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

43.4

°F

April 18, 22:30

Trend:

stable

Yesterday:

45.5°F

Tomorrow:

43.9°F

Sunrise:

06:12

Sunset:

20:30

Day Length:

14 h. 18 min.

Sønderborg in April

Minimum:

34.4°F

Average:

39.2°F

Maximum:

43.0°F

Sea water temperature in Sønderborg today

As of now, in Sønderborg, the water temperature is 43.4°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 1.1°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 47.2°F on 2025, while the historical minimum was 41.3°F on 2018.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 44.5°F, with minimum temperature starting at 43.9°F, while the maximum might reach 45.5°F.

Daily water temperature in Sønderborg

Date	Current Year actual* / forecast**	last year	10 years average
Apr 4	41.7°F	44.1°F	41.5°F
Apr 5	41.4°F	44.1°F	42.1°F
Apr 6	41.5°F	44.7°F	41.8°F
Apr 7	41.2°F	44.1°F	42.1°F
Apr 8	41.8°F	45.0°F	42.7°F
Apr 9	42.8°F	44.7°F	42.9°F
Apr 10	43.6°F	44.7°F	43.3°F
Apr 11	42.4°F	45.9°F	43.1°F
Apr 12	43.8°F	46.0°F	43.2°F
Apr 13	42.6°F	46.6°F	43.3°F
Apr 14	41.6°F	47.2°F	43.2°F
Apr 15	42.3°F	47.4°F	43.5°F
Apr 16	42.6°F	48.3°F	43.7°F
Apr 17	45.5°F	48.3°F	44.4°F
Apr 18	43.4°F	47.2°F	44.5°F
Apr 19	43.9°F	46.0°F	45.0°F
Apr 20	44.0°F	45.9°F	45.1°F
Apr 21	44.3°F	45.4°F	45.4°F
Apr 22	44.3°F	44.3°F	45.4°F
Apr 23	44.8°F	46.3°F	45.9°F
Apr 24	45.5°F	48.0°F	46.6°F
Apr 25	45.2°F	47.8°F	46.3°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Sønderborg by month

In an average year, Sønderborg offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Sønderborg was recorded on July 28, 2018, reaching a 72.9°F. While the coldest temperature occurred on January 23, 2016, dipping to 32.0°F. The average readings by season are 38.9°F in Winter, 45.0°F in Spring, 63.6°F in Summer, and 56.1°F in Autumn.