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 12.25°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.

54.1

°F

June 20, 10:16

Trend:

decreasing

Yesterday:

55.7°F

Tomorrow:

53.6°F

Sunrise:

03:02

Sunset:

23:38

Day Length:

20 h. 36 min.

Trondheim in June

Minimum:

37.5°F

Average:

41.9°F

Maximum:

43.3°F

Sea water temperature in Trondheim today

As of now, in Trondheim, the water temperature is 54.1°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 2.8°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 64.3°F on 2020, while the historical minimum was 54.1°F on 2018.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 54.2°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
Jun 6	55.0°F	52.5°F	53.7°F
Jun 7	55.8°F	52.3°F	54.1°F
Jun 8	55.3°F	52.9°F	54.6°F
Jun 9	58.3°F	53.1°F	54.9°F
Jun 10	58.0°F	53.9°F	55.4°F
Jun 11	56.6°F	54.1°F	55.3°F
Jun 12	56.6°F	53.8°F	55.8°F
Jun 13	57.2°F	54.1°F	55.7°F
Jun 14	56.4°F	54.9°F	56.1°F
Jun 15	55.8°F	58.4°F	56.5°F
Jun 16	55.6°F	57.8°F	56.2°F
Jun 17	55.8°F	57.2°F	56.0°F
Jun 18	55.2°F	56.6°F	56.2°F
Jun 19	55.7°F	56.5°F	56.2°F
Jun 20	54.1°F	55.9°F	56.9°F
Jun 21	53.6°F	55.6°F	56.4°F
Jun 22	53.7°F	55.7°F	56.5°F
Jun 23	54.0°F	58.8°F	56.8°F
Jun 24	54.0°F	58.1°F	56.8°F
Jun 25	54.4°F	57.5°F	57.2°F
Jun 26	54.8°F	56.9°F	57.6°F
Jun 27	55.1°F	56.3°F	58.0°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.