What is the current water temperature in Reykjavík?

Q: What is the current water temperature in Reykjavík?

As of now, in Reykjavík, the water temperature is 3.27°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.

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Water temperature in Reykjavík

Detailed information about the current water temperature in Reykjavík. 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.

37.9

°F

April 15, 15:44

Trend:

stable

Yesterday:

37.9°F

Tomorrow:

38.1°F

Sunrise:

05:57

Sunset:

21:00

Day Length:

15 h. 3 min.

Reykjavík in April

Minimum:

33.3°F

Average:

37.4°F

Maximum:

40.0°F

Sea water temperature in Reykjavík today

As of now, in Reykjavík, the water temperature is 37.9°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 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 41.4°F on 2025, while the historical minimum was 37.1°F on 2024.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 38.5°F, with minimum temperature starting at 38.1°F, while the maximum might reach 38.9°F.

Daily water temperature in Reykjavík

Date	Current Year actual* / forecast**	last year	10 years average
Apr 1	36.2°F	40.0°F	38.1°F
Apr 2	36.3°F	39.8°F	38.1°F
Apr 3	36.1°F	40.5°F	38.2°F
Apr 4	36.3°F	40.6°F	38.3°F
Apr 5	36.8°F	40.5°F	38.4°F
Apr 6	36.6°F	40.7°F	38.6°F
Apr 7	37.0°F	40.9°F	38.6°F
Apr 8	37.1°F	40.9°F	38.6°F
Apr 9	37.4°F	40.9°F	38.7°F
Apr 10	37.5°F	39.9°F	38.7°F
Apr 11	37.6°F	40.8°F	38.9°F
Apr 12	37.7°F	41.9°F	39.2°F
Apr 13	37.5°F	41.7°F	39.0°F
Apr 14	37.9°F	41.8°F	39.1°F
Apr 15	37.9°F	41.4°F	39.5°F
Apr 16	38.1°F	41.4°F	39.7°F
Apr 17	38.1°F	41.8°F	39.8°F
Apr 18	38.2°F	41.8°F	39.9°F
Apr 19	38.5°F	41.6°F	40.2°F
Apr 20	38.6°F	41.6°F	40.3°F
Apr 21	38.8°F	42.3°F	40.4°F
Apr 22	38.9°F	41.8°F	40.5°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 Reykjavík by month

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

The warmest water in Reykjavík was recorded on September 5, 2025, reaching a 57.1°F. While the coldest temperature occurred on February 19, 2017, dipping to 32.5°F. The average readings by season are 37.4°F in Winter, 40.7°F in Spring, 51.7°F in Summer, and 47.0°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kópavogur	38.0°F	2mi
Álftanes	38.2°F	4mi
Hafnarfjörður	38.1°F	5mi
Akranes	37.9°F	14mi
Keflavík	41.4°F	22mi

* current water temperature in this city

** straight line distance from Reykjavík