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 8.06°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.

46.5

°F

May 31, 22:55

Trend:

stable

Yesterday:

46.6°F

Tomorrow:

47.0°F

Sunrise:

03:26

Sunset:

23:26

Day Length:

20 h. 0 min.

Reykjavík in June

Minimum:

33.0°F

Average:

37.1°F

Maximum:

39.7°F

Sea water temperature in Reykjavík today

As of now, in Reykjavík, the water temperature is 46.5°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. 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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 49.9°F on 2025, while the historical minimum was 45.5°F on 2023.

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 47.5°F, with minimum temperature starting at 47.0°F, while the maximum might reach 47.9°F.

Daily water temperature in Reykjavík

Date	Current Year actual* / forecast**	last year	10 years average
May 17	45.5°F	46.4°F	44.8°F
May 18	44.8°F	47.5°F	44.9°F
May 19	45.4°F	48.4°F	45.1°F
May 20	45.3°F	49.1°F	45.2°F
May 21	45.6°F	50.0°F	45.6°F
May 22	46.1°F	49.8°F	45.8°F
May 23	46.3°F	49.9°F	46.1°F
May 24	46.2°F	49.8°F	46.4°F
May 25	46.8°F	49.7°F	46.6°F
May 26	47.2°F	49.6°F	46.9°F
May 27	46.9°F	49.3°F	47.0°F
May 28	46.5°F	48.9°F	47.0°F
May 29	47.0°F	49.1°F	47.0°F
May 30	46.6°F	49.3°F	46.9°F
May 31	46.5°F	49.9°F	47.0°F
Jun 1	47.0°F	51.1°F	47.5°F
Jun 2	47.4°F	50.9°F	47.9°F
Jun 3	47.4°F	51.0°F	47.9°F
Jun 4	47.6°F	50.7°F	48.0°F
Jun 5	47.9°F	50.4°F	48.3°F
Jun 6	47.8°F	49.1°F	48.3°F
Jun 7	47.7°F	48.0°F	48.2°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	46.5°F	2mi
Álftanes	46.5°F	4mi
Hafnarfjörður	46.5°F	5mi
Akranes	46.5°F	14mi
Keflavík	46.8°F	22mi

* current water temperature in this city

** straight line distance from Reykjavík