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 7.96°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.

46.3

°F

May 1, 15:10

Trend:

increasing

Yesterday:

44.5°F

Tomorrow:

46.6°F

Sunrise:

04:57

Sunset:

21:36

Day Length:

16 h. 39 min.

Trondheim in May

Minimum:

39.5°F

Average:

42.2°F

Maximum:

43.4°F

Sea water temperature in Trondheim today

As of now, in Trondheim, the water temperature is 46.3°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 1.6°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 47.8°F on 2019, while the historical minimum was 42.6°F on 2021.

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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 47.0°F, with minimum temperature starting at 46.6°F, while the maximum might reach 47.5°F.

Daily water temperature in Trondheim

Date	Current Year actual* / forecast**	last year	10 years average
Apr 17	44.9°F	41.7°F	42.2°F
Apr 18	44.6°F	43.3°F	42.6°F
Apr 19	45.3°F	43.2°F	42.7°F
Apr 20	45.4°F	45.1°F	43.4°F
Apr 21	45.3°F	42.5°F	43.4°F
Apr 22	45.4°F	43.2°F	43.6°F
Apr 23	45.3°F	44.5°F	44.0°F
Apr 24	45.4°F	44.5°F	44.2°F
Apr 25	45.4°F	44.9°F	44.4°F
Apr 26	45.3°F	44.7°F	44.4°F
Apr 27	45.0°F	45.4°F	44.7°F
Apr 28	44.1°F	45.4°F	44.6°F
Apr 29	44.1°F	45.3°F	44.7°F
Apr 30	44.5°F	45.4°F	44.9°F
May 1	46.3°F	45.5°F	44.7°F
May 2	46.6°F	45.7°F	45.0°F
May 3	47.0°F	46.2°F	45.4°F
May 4	46.8°F	45.2°F	45.2°F
May 5	46.9°F	45.3°F	45.3°F
May 6	47.3°F	44.9°F	45.7°F
May 7	47.2°F	45.0°F	45.6°F
May 8	47.5°F	45.2°F	45.9°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, 58.7°F in Summer, and 50.4°F in Autumn.