What is the current water temperature in Keflavík?

Q: What is the current water temperature in Keflavík?

As of now, in Keflavík, the water temperature is 8.55°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 > Keflavík

Water temperature in Keflavík

Detailed information about the current water temperature in Keflavík. 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.

47.4

°F

May 18, 15:44

Trend:

increasing

Yesterday:

47.0°F

Tomorrow:

47.4°F

Sunrise:

04:08

Sunset:

22:47

Day Length:

18 h. 39 min.

Keflavík in May

Minimum:

38.6°F

Average:

40.1°F

Maximum:

41.8°F

Sea water temperature in Keflavík today

As of now, in Keflavík, the water temperature is 47.4°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 2.7°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 46.1°F on 2024, while the historical minimum was 42.6°F on 2015.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 48.0°F, with minimum temperature starting at 47.4°F, while the maximum might reach 48.6°F.

Daily water temperature in Keflavík

Date	Current Year actual* / forecast**	last year	10 years average
May 4	44.9°F	44.5°F	43.8°F
May 5	44.9°F	45.0°F	43.9°F
May 6	45.0°F	44.8°F	44.0°F
May 7	45.3°F	45.2°F	44.2°F
May 8	45.2°F	44.6°F	44.0°F
May 9	45.3°F	44.9°F	44.1°F
May 10	45.4°F	44.8°F	44.1°F
May 11	45.2°F	44.7°F	44.0°F
May 12	45.2°F	44.7°F	44.0°F
May 13	45.7°F	45.0°F	44.3°F
May 14	45.5°F	45.1°F	44.4°F
May 15	46.2°F	45.5°F	44.6°F
May 16	46.0°F	45.5°F	44.6°F
May 17	47.0°F	45.9°F	44.8°F
May 18	47.4°F	46.1°F	44.7°F
May 19	47.4°F	46.5°F	44.7°F
May 20	47.6°F	46.3°F	44.9°F
May 21	47.8°F	45.9°F	45.1°F
May 22	48.1°F	45.9°F	45.4°F
May 23	48.2°F	45.9°F	45.4°F
May 24	48.3°F	46.1°F	45.6°F
May 25	48.6°F	45.9°F	45.9°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 Keflavík by month

In an average year, Keflavík offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Keflavík was recorded on August 6, 2019, reaching a 56.1°F. While the coldest temperature occurred on February 9, 2024, dipping to 36.3°F. The average readings by season are 40.3°F in Winter, 42.1°F in Spring, 50.8°F in Summer, and 47.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Álftanes	48.0°F	18mi
Hafnarfjörður	47.5°F	19mi
Kópavogur	47.7°F	21mi
Reykjavík	47.5°F	22mi
Akranes	48.0°F	26mi

* current water temperature in this city

** straight line distance from Keflavík