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 9.02°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.

Iceland > Reykjavík

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.

48.2

°F

October 12, 21:57

Trend:

decreasing

Yesterday:

48.5°F

Tomorrow:

48.1°F

Sunrise:

08:08

Sunset:

18:19

Day Length:

10 h. 11 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 48.2°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 0.8°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 considerably 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 51.0°F on 2025, while the historical minimum was 45.6°F on 2024.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 47.9°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
Sep 28	49.9°F	51.5°F	49.4°F
Sep 29	49.9°F	51.0°F	49.2°F
Sep 30	49.9°F	51.4°F	49.2°F
Oct 1	49.4°F	51.0°F	49.0°F
Oct 2	49.4°F	50.7°F	48.8°F
Oct 3	49.6°F	50.3°F	48.7°F
Oct 4	49.3°F	49.9°F	48.5°F
Oct 5	49.2°F	49.4°F	48.3°F
Oct 6	49.1°F	49.1°F	48.1°F
Oct 7	49.0°F	49.2°F	48.0°F
Oct 8	48.7°F	50.0°F	47.9°F
Oct 9	48.5°F	49.8°F	47.7°F
Oct 10	48.6°F	49.5°F	47.7°F
Oct 11	48.5°F	50.1°F	47.6°F
Oct 12	48.2°F	51.0°F	47.4°F
Oct 13	48.1°F	51.2°F	47.3°F
Oct 14	47.9°F	50.8°F	47.1°F
Oct 15	47.9°F	51.7°F	47.1°F
Oct 16	48.0°F	52.8°F	47.2°F
Oct 17	48.0°F	53.7°F	47.2°F
Oct 18	47.9°F	53.8°F	47.1°F
Oct 19	47.8°F	53.4°F	47.0°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 47.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kópavogur	48.2°F	2mi
Álftanes	48.3°F	4mi
Hafnarfjörður	48.3°F	5mi
Akranes	48.0°F	14mi
Keflavík	48.8°F	22mi

* current water temperature in this city

** straight line distance from Reykjavík