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 5.89°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.

42.6

°F

March 31, 02:43

Trend:

stable

Yesterday:

42.5°F

Tomorrow:

42.5°F

Sunrise:

06:43

Sunset:

20:04

Day Length:

13 h. 21 min.

Trondheim in April

Minimum:

40.1°F

Average:

42.6°F

Maximum:

43.5°F

Sea water temperature in Trondheim today

As of now, in Trondheim, the water temperature is 42.6°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 1.5°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 stay about the same.

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 42.2°F on 2016, while the historical minimum was 40.0°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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 42.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Trondheim

Date	Current Year actual* / forecast**	last year	10 years average
Mar 17	42.6°F	40.1°F	40.1°F
Mar 18	44.7°F	40.5°F	40.6°F
Mar 19	43.3°F	41.0°F	40.6°F
Mar 20	43.5°F	41.0°F	40.5°F
Mar 21	43.5°F	40.8°F	40.8°F
Mar 22	43.2°F	40.5°F	40.6°F
Mar 23	43.7°F	42.2°F	41.0°F
Mar 24	43.6°F	41.4°F	41.1°F
Mar 25	42.0°F	40.9°F	41.0°F
Mar 26	43.7°F	41.0°F	41.2°F
Mar 27	42.9°F	40.9°F	41.1°F
Mar 28	42.9°F	40.8°F	41.3°F
Mar 29	40.9°F	41.0°F	41.1°F
Mar 30	42.5°F	41.2°F	41.0°F
Mar 31	42.6°F	40.7°F	41.1°F
Apr 1	42.5°F	40.7°F	40.9°F
Apr 2	42.6°F	40.7°F	41.1°F
Apr 3	42.4°F	40.8°F	40.9°F
Apr 4	42.7°F	41.4°F	41.1°F
Apr 5	42.8°F	41.5°F	41.2°F
Apr 6	42.9°F	41.6°F	41.3°F
Apr 7	43.1°F	42.1°F	41.6°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 41.7°F in Winter, 43.9°F in Spring, 58.7°F in Summer, and 50.4°F in Autumn.