What is the current water temperature in Oslo?

Q: What is the current water temperature in Oslo?

As of now, in Oslo, the water temperature is 4.09°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 > Oslo

Water temperature in Oslo

Detailed information about the current water temperature in Oslo. 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.

39.4

°F

January 21, 00:50

Trend:

stable

Yesterday:

39.4°F

Tomorrow:

39.5°F

Sunrise:

08:55

Sunset:

16:03

Day Length:

7 h. 8 min.

Oslo in January

Minimum:

34.1°F

Average:

37.6°F

Maximum:

41.0°F

Sea water temperature in Oslo today

As of now, in Oslo, the water temperature is 39.4°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 2.6°F higher 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 stay about the same.

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 maximum temperature for this date. The maximum temperature recorded for this date was 40.9°F on 2024, while the historical minimum was 32.1°F on 2025.

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 shows a gradual cooling trend. The average temperature is expected to be 38.9°F, the minimum temperature may reach 38.2°F, and the maximum might stay at 39.5°F.

Daily water temperature in Oslo

Date	Current Year actual* / forecast**	last year	10 years average
Jan 7	39.1°F	36.2°F	36.9°F
Jan 8	38.9°F	39.6°F	37.0°F
Jan 9	40.0°F	40.5°F	38.3°F
Jan 10	42.8°F	39.5°F	38.4°F
Jan 11	42.2°F	38.9°F	38.0°F
Jan 12	41.7°F	39.2°F	38.3°F
Jan 13	41.2°F	38.9°F	38.2°F
Jan 14	40.8°F	38.5°F	38.5°F
Jan 15	40.7°F	35.0°F	38.4°F
Jan 16	40.0°F	34.9°F	37.5°F
Jan 17	40.1°F	33.5°F	37.3°F
Jan 18	40.2°F	32.8°F	37.2°F
Jan 19	39.8°F	32.0°F	36.9°F
Jan 20	39.4°F	32.0°F	36.8°F
Jan 21	39.4°F	32.1°F	36.7°F
Jan 22	39.5°F	32.5°F	36.8°F
Jan 23	38.2°F	32.0°F	35.6°F
Jan 24	38.7°F	32.0°F	36.1°F
Jan 25	38.7°F	32.2°F	36.1°F
Jan 26	39.1°F	35.2°F	36.5°F
Jan 27	38.9°F	37.3°F	36.3°F
Jan 28	38.9°F	37.2°F	36.3°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 Oslo by month

In an average year, Oslo offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Oslo was recorded on July 28, 2018, reaching a 73.3°F. While the coldest temperature occurred on January 19, 2025, dipping to 32.0°F. The average readings by season are 37.3°F in Winter, 43.4°F in Spring, 64.5°F in Summer, and 53.3°F in Autumn.