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 13.56°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.

56.4

°F

June 29, 13:15

Trend:

stable

Yesterday:

56.5°F

Tomorrow:

56.9°F

Sunrise:

03:08

Sunset:

23:35

Day Length:

20 h. 27 min.

Trondheim in July

Minimum:

37.6°F

Average:

41.0°F

Maximum:

42.9°F

Sea water temperature in Trondheim today

As of now, in Trondheim, the water temperature is 56.4°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 1.3°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 rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 66.5°F on 2020, while the historical minimum was 53.0°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 minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 58.2°F, with minimum temperature starting at 56.9°F, while the maximum might reach 59.1°F.

Daily water temperature in Trondheim

Date	Current Year actual* / forecast**	last year	10 years average
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	56.6°F
Jun 21	56.2°F	55.6°F	56.4°F
Jun 22	57.6°F	55.7°F	56.6°F
Jun 23	57.5°F	58.8°F	56.9°F
Jun 24	56.7°F	58.1°F	56.8°F
Jun 25	55.7°F	57.5°F	57.1°F
Jun 26	55.2°F	56.9°F	57.4°F
Jun 27	55.3°F	56.3°F	57.7°F
Jun 28	56.5°F	56.1°F	57.7°F
Jun 29	56.4°F	56.1°F	57.7°F
Jun 30	56.9°F	56.3°F	58.2°F
Jul 1	57.6°F	56.5°F	58.9°F
Jul 2	58.0°F	56.7°F	59.3°F
Jul 3	58.5°F	57.0°F	59.8°F
Jul 4	58.4°F	55.7°F	59.6°F
Jul 5	58.7°F	56.0°F	60.0°F
Jul 6	59.1°F	56.6°F	60.4°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.