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 15.53°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.

60.0

°F

August 29, 11:01

Trend:

increasing

Yesterday:

58.5°F

Tomorrow:

60.2°F

Sunrise:

05:53

Sunset:

20:44

Day Length:

14 h. 51 min.

Trondheim in September

Minimum:

37.0°F

Average:

40.7°F

Maximum:

43.8°F

Sea water temperature in Trondheim today

As of now, in Trondheim, the water temperature is 60.0°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 2.3°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 60.9°F on 2019, while the historical minimum was 55.4°F on 2025.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest 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 59.6°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
Aug 15	56.5°F	59.8°F	59.2°F
Aug 16	56.0°F	58.9°F	59.3°F
Aug 17	56.9°F	58.7°F	59.3°F
Aug 18	56.8°F	58.6°F	59.1°F
Aug 19	56.2°F	58.5°F	59.1°F
Aug 20	56.0°F	57.7°F	59.1°F
Aug 21	55.7°F	57.7°F	58.9°F
Aug 22	57.1°F	57.7°F	58.9°F
Aug 23	56.8°F	57.6°F	58.6°F
Aug 24	57.0°F	57.5°F	58.5°F
Aug 25	56.6°F	57.3°F	58.2°F
Aug 26	56.5°F	55.9°F	58.2°F
Aug 27	57.5°F	55.8°F	58.0°F
Aug 28	58.5°F	55.4°F	57.7°F
Aug 29	60.0°F	55.4°F	57.7°F
Aug 30	60.2°F	56.9°F	57.9°F
Aug 31	59.8°F	55.7°F	57.5°F
Sep 1	59.8°F	56.8°F	57.5°F
Sep 2	59.5°F	56.6°F	57.2°F
Sep 3	59.5°F	56.9°F	57.2°F
Sep 4	59.4°F	57.1°F	57.1°F
Sep 5	59.1°F	57.4°F	56.9°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, 58.6°F in Summer, and 50.4°F in Autumn.