What is the current water temperature in Álftanes?

Q: What is the current water temperature in Álftanes?

As of now, in Álftanes, the water temperature is 7.46°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 > Álftanes

Water temperature in Álftanes

Detailed information about the current water temperature in Álftanes. 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.

45.4

°F

May 15, 16:57

Trend:

increasing

Yesterday:

45.2°F

Tomorrow:

45.5°F

Sunrise:

04:15

Sunset:

22:36

Day Length:

18 h. 21 min.

Álftanes in May

Minimum:

35.2°F

Average:

37.5°F

Maximum:

40.0°F

Sea water temperature in Álftanes today

As of now, in Álftanes, the water temperature is 45.4°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 0.9°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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 47.4°F on 2025, while the historical minimum was 43.2°F on 2021.

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 46.1°F, with minimum temperature starting at 45.5°F, while the maximum might reach 46.8°F.

Daily water temperature in Álftanes

Date	Current Year actual* / forecast**	last year	10 years average
May 1	42.3°F	43.6°F	42.6°F
May 2	43.0°F	43.7°F	42.8°F
May 3	42.7°F	44.2°F	42.9°F
May 4	43.7°F	44.0°F	43.0°F
May 5	43.5°F	43.9°F	43.2°F
May 6	43.4°F	44.0°F	43.4°F
May 7	43.4°F	44.0°F	43.5°F
May 8	43.2°F	44.4°F	43.5°F
May 9	42.9°F	44.5°F	43.8°F
May 10	42.0°F	44.5°F	43.7°F
May 11	42.9°F	44.6°F	43.9°F
May 12	44.0°F	44.7°F	44.0°F
May 13	44.3°F	45.6°F	44.3°F
May 14	45.2°F	45.3°F	44.3°F
May 15	45.4°F	47.4°F	44.6°F
May 16	45.5°F	46.6°F	44.7°F
May 17	45.7°F	46.8°F	44.8°F
May 18	45.9°F	48.0°F	45.0°F
May 19	46.0°F	49.0°F	45.1°F
May 20	46.2°F	49.8°F	45.4°F
May 21	46.5°F	50.7°F	45.7°F
May 22	46.8°F	50.4°F	46.0°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 Álftanes by month

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

The warmest water in Álftanes was recorded on August 15, 2021, reaching a 56.8°F. While the coldest temperature occurred on January 19, 2023, dipping to 33.3°F. The average readings by season are 37.9°F in Winter, 40.8°F in Spring, 51.6°F in Summer, and 47.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kópavogur	45.7°F	3mi
Hafnarfjörður	45.6°F	3mi
Reykjavík	45.8°F	4mi
Akranes	44.3°F	15mi
Keflavík	45.2°F	18mi

* current water temperature in this city

** straight line distance from Álftanes