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 10.17°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.

50.3

°F

September 27, 16:25

Trend:

stable

Yesterday:

50.1°F

Tomorrow:

50.1°F

Sunrise:

07:24

Sunset:

19:12

Day Length:

11 h. 48 min.

Reykjavík in October

Minimum:

33.5°F

Average:

37.2°F

Maximum:

39.8°F

Sea water temperature in Reykjavík today

As of now, in Reykjavík, the water temperature is 50.3°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 0.7°F higher 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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 52.7°F on 2025, while the historical minimum was 47.6°F on 2024.

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 shows a gradual cooling trend. The average temperature is expected to be 49.6°F, the minimum temperature may reach 49.1°F, and the maximum might stay at 50.1°F.

Daily water temperature in Reykjavík

Date	Current Year actual* / forecast**	last year	10 years average
Sep 13	51.7°F	53.8°F	51.2°F
Sep 14	51.5°F	53.0°F	51.0°F
Sep 15	51.3°F	53.7°F	50.9°F
Sep 16	51.2°F	54.6°F	50.9°F
Sep 17	50.8°F	54.6°F	50.8°F
Sep 18	50.8°F	54.0°F	50.6°F
Sep 19	50.8°F	53.6°F	50.5°F
Sep 20	50.8°F	53.0°F	50.3°F
Sep 21	50.6°F	53.2°F	50.2°F
Sep 22	50.7°F	54.4°F	50.2°F
Sep 23	50.5°F	55.4°F	50.2°F
Sep 24	50.3°F	53.1°F	49.9°F
Sep 25	50.1°F	53.0°F	49.8°F
Sep 26	50.1°F	53.0°F	49.8°F
Sep 27	50.3°F	52.7°F	49.6°F
Sep 28	50.1°F	51.5°F	49.3°F
Sep 29	49.9°F	51.0°F	49.2°F
Sep 30	49.8°F	51.4°F	49.1°F
Oct 1	49.7°F	51.0°F	49.0°F
Oct 2	49.5°F	50.7°F	48.8°F
Oct 3	49.4°F	50.3°F	48.6°F
Oct 4	49.1°F	49.9°F	48.4°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, 51.8°F in Summer, and 47.0°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kópavogur	50.3°F	2mi
Álftanes	50.4°F	4mi
Hafnarfjörður	50.3°F	5mi
Akranes	50.5°F	14mi
Keflavík	50.2°F	22mi

* current water temperature in this city

** straight line distance from Reykjavík