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 11.34°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.

52.4

°F

September 9, 00:04

Trend:

decreasing

Yesterday:

52.4°F

Tomorrow:

52.2°F

Sunrise:

06:32

Sunset:

20:16

Day Length:

13 h. 44 min.

Reykjavík in September

Minimum:

33.0°F

Average:

37.1°F

Maximum:

39.9°F

Sea water temperature in Reykjavík today

As of now, in Reykjavík, the water temperature is 52.4°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 0.6°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 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 54.5°F on 2025, while the historical minimum was 49.8°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 51.8°F, the minimum temperature may reach 51.4°F, and the maximum might stay at 52.2°F.

Daily water temperature in Reykjavík

Date	Current Year actual* / forecast**	last year	10 years average
Aug 26	53.3°F	53.3°F	52.6°F
Aug 27	52.7°F	53.8°F	52.5°F
Aug 28	53.4°F	54.0°F	52.5°F
Aug 29	53.5°F	54.9°F	52.5°F
Aug 30	53.3°F	56.1°F	52.6°F
Aug 31	53.2°F	55.8°F	52.6°F
Sep 1	53.3°F	56.2°F	52.7°F
Sep 2	52.8°F	56.9°F	52.5°F
Sep 3	52.9°F	56.3°F	52.2°F
Sep 4	52.5°F	56.9°F	52.2°F
Sep 5	52.5°F	57.1°F	52.3°F
Sep 6	52.4°F	56.4°F	52.1°F
Sep 7	52.3°F	55.7°F	52.0°F
Sep 8	52.4°F	55.1°F	51.9°F
Sep 9	52.4°F	54.5°F	51.8°F
Sep 10	52.2°F	54.4°F	51.6°F
Sep 11	52.1°F	54.0°F	51.5°F
Sep 12	51.9°F	53.7°F	51.3°F
Sep 13	51.7°F	53.8°F	51.2°F
Sep 14	51.6°F	53.0°F	51.0°F
Sep 15	51.5°F	53.7°F	50.9°F
Sep 16	51.4°F	54.6°F	50.8°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	52.4°F	2mi
Álftanes	52.3°F	4mi
Hafnarfjörður	52.3°F	5mi
Akranes	52.1°F	14mi
Keflavík	52.1°F	22mi

* current water temperature in this city

** straight line distance from Reykjavík