What is the current water temperature in Trondheim?

Q: What is the current water temperature in Trondheim?

As of now, in Trondheim, the water temperature is 6.16°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.

Norway > Trondheim

Water temperature in Trondheim

Detailed information about the current water temperature in Trondheim. 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.

43.1

°F

January 5, 05:52

Trend:

decreasing

Yesterday:

43.5°F

Tomorrow:

42.7°F

Sunrise:

09:56

Sunset:

14:53

Day Length:

4 h. 57 min.

Trondheim in January

Minimum:

41.1°F

Average:

42.8°F

Maximum:

44.6°F

Sea water temperature in Trondheim today

As of now, in Trondheim, the water temperature is 43.1°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 1.0°F higher 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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 43.4°F on 2019, while the historical minimum was 39.5°F on 2021.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 41.9°F, the minimum temperature may reach 41.4°F, and the maximum might stay at 42.7°F.

Daily water temperature in Trondheim

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	44.0°F	42.2°F	42.8°F
Jan 2	43.8°F	42.2°F	42.7°F
Jan 3	43.7°F	42.1°F	42.7°F
Jan 4	43.5°F	42.5°F	42.5°F
Jan 5	43.1°F	42.6°F	42.1°F
Jan 6	42.7°F	42.4°F	41.7°F
Jan 7	42.0°F	42.2°F	41.0°F
Jan 8	41.8°F	40.2°F	40.8°F
Jan 9	41.4°F	40.0°F	40.4°F
Jan 10	41.8°F	40.1°F	40.8°F
Jan 11	42.0°F	40.2°F	41.0°F
Jan 12	41.8°F	39.2°F	40.8°F
Dec 22	43.5°F	42.6°F	42.9°F
Dec 23	42.5°F	42.5°F	42.6°F
Dec 24	42.9°F	42.4°F	42.6°F
Dec 25	43.3°F	42.4°F	42.7°F
Dec 26	44.5°F	42.4°F	42.8°F
Dec 27	44.9°F	41.1°F	42.6°F
Dec 28	44.9°F	38.6°F	42.4°F
Dec 29	45.6°F	40.2°F	42.7°F
Dec 30	44.4°F	40.6°F	42.6°F
Dec 31	44.2°F	42.5°F	42.8°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 Trondheim by month

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

The warmest water in Trondheim was recorded on July 24, 2025, reaching a 71.6°F. While the coldest temperature occurred on March 16, 2022, dipping to 34.1°F. The average readings by season are 41.6°F in Winter, 43.8°F in Spring, 58.7°F in Summer, and 50.4°F in Autumn.