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 13.32°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.

56.0

°F

August 17, 06:30

Trend:

decreasing

Yesterday:

56.0°F

Tomorrow:

55.7°F

Sunrise:

05:19

Sunset:

21:25

Day Length:

16 h. 6 min.

Trondheim in August

Minimum:

37.2°F

Average:

40.8°F

Maximum:

42.9°F

Sea water temperature in Trondheim today

As of now, in Trondheim, the water temperature is 56.0°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 3.6°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 61.1°F on 2020, while the historical minimum was 58.2°F on 2016.

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 55.5°F, the minimum temperature may reach 55.0°F, and the maximum might stay at 55.8°F.

Daily water temperature in Trondheim

Date	Current Year actual* / forecast**	last year	10 years average
Aug 3	59.3°F	65.8°F	61.6°F
Aug 4	58.2°F	67.6°F	61.5°F
Aug 5	58.3°F	67.0°F	61.5°F
Aug 6	58.2°F	65.6°F	61.4°F
Aug 7	57.9°F	65.2°F	61.3°F
Aug 8	57.6°F	64.4°F	61.1°F
Aug 9	58.3°F	64.0°F	60.7°F
Aug 10	58.3°F	63.6°F	60.3°F
Aug 11	57.3°F	63.5°F	60.2°F
Aug 12	57.1°F	61.1°F	60.0°F
Aug 13	56.9°F	58.0°F	59.8°F
Aug 14	56.6°F	57.9°F	59.4°F
Aug 15	56.5°F	59.8°F	59.2°F
Aug 16	56.0°F	58.9°F	59.6°F
Aug 17	56.0°F	58.7°F	59.6°F
Aug 18	55.7°F	58.6°F	59.3°F
Aug 19	55.7°F	58.5°F	59.3°F
Aug 20	55.8°F	57.7°F	59.4°F
Aug 21	55.6°F	57.7°F	59.2°F
Aug 22	55.4°F	57.7°F	59.1°F
Aug 23	55.2°F	57.6°F	58.8°F
Aug 24	55.0°F	57.5°F	58.6°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, 58.6°F in Summer, and 50.4°F in Autumn.