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 9.73°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.

49.5

°F

May 13, 16:34

Trend:

stable

Yesterday:

48.9°F

Tomorrow:

49.4°F

Sunrise:

04:45

Sunset:

21:42

Day Length:

16 h. 57 min.

Oslo in May

Minimum:

34.1°F

Average:

36.8°F

Maximum:

40.1°F

Sea water temperature in Oslo today

As of now, in Oslo, the water temperature is 49.5°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 0.5°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

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 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 56.9°F on 2025, while the historical minimum was 47.0°F on 2021.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 51.0°F, with minimum temperature starting at 49.4°F, while the maximum might reach 52.6°F.

Daily water temperature in Oslo

Date	Current Year actual* / forecast**	last year	10 years average
Apr 29	45.6°F	49.2°F	45.9°F
Apr 30	46.1°F	49.5°F	46.7°F
May 1	49.2°F	48.9°F	47.2°F
May 2	48.8°F	49.4°F	47.6°F
May 3	48.5°F	50.4°F	48.4°F
May 4	49.1°F	51.2°F	48.5°F
May 5	49.0°F	50.7°F	48.7°F
May 6	48.5°F	49.9°F	48.8°F
May 7	49.0°F	49.9°F	49.2°F
May 8	49.2°F	51.4°F	48.9°F
May 9	49.4°F	51.2°F	49.3°F
May 10	48.7°F	51.0°F	49.1°F
May 11	49.2°F	51.0°F	49.1°F
May 12	48.9°F	51.1°F	49.2°F
May 13	49.5°F	56.9°F	50.0°F
May 14	49.4°F	54.8°F	49.9°F
May 15	50.2°F	52.2°F	50.7°F
May 16	50.8°F	53.8°F	51.3°F
May 17	51.2°F	53.3°F	51.6°F
May 18	51.1°F	53.5°F	51.5°F
May 19	52.1°F	53.9°F	52.5°F
May 20	52.6°F	54.8°F	53.1°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, 43.3°F in Spring, 64.5°F in Summer, and 53.3°F in Autumn.