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 2.64°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.

36.8

°F

April 5, 17:30

Trend:

increasing

Yesterday:

36.3°F

Tomorrow:

37.0°F

Sunrise:

06:33

Sunset:

20:30

Day Length:

13 h. 57 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 36.8°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 1.9°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 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 40.5°F on 2025, while the historical minimum was 36.7°F on 2023.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 37.0°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Reykjavík

Date	Current Year actual* / forecast**	last year	10 years average
Mar 22	36.7°F	39.4°F	38.0°F
Mar 23	36.8°F	39.3°F	37.9°F
Mar 24	36.5°F	39.0°F	37.8°F
Mar 25	36.4°F	39.6°F	37.8°F
Mar 26	36.5°F	39.5°F	37.8°F
Mar 27	36.6°F	39.3°F	37.7°F
Mar 28	36.5°F	39.7°F	37.8°F
Mar 29	36.4°F	39.3°F	37.8°F
Mar 30	36.3°F	39.8°F	37.9°F
Mar 31	36.4°F	39.8°F	38.1°F
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	38.6°F
Apr 6	37.0°F	40.7°F	38.8°F
Apr 7	36.9°F	40.9°F	38.8°F
Apr 8	36.9°F	40.9°F	38.8°F
Apr 9	37.0°F	40.9°F	38.8°F
Apr 10	37.0°F	39.9°F	38.8°F
Apr 11	37.1°F	40.8°F	39.0°F
Apr 12	37.5°F	41.9°F	39.3°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 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	36.8°F	2mi
Álftanes	36.7°F	4mi
Hafnarfjörður	36.9°F	5mi
Akranes	36.3°F	14mi
Keflavík	40.3°F	22mi

* current water temperature in this city

** straight line distance from Reykjavík