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 3.63°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.

38.5

°F

April 23, 12:43

Trend:

stable

Yesterday:

40.0°F

Tomorrow:

38.9°F

Sunrise:

05:29

Sunset:

21:25

Day Length:

15 h. 56 min.

Álftanes in April

Minimum:

35.5°F

Average:

38.0°F

Maximum:

40.4°F

Sea water temperature in Álftanes today

As of now, in Álftanes, the water temperature is 38.5°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 2.4°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

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 42.3°F on 2025, while the historical minimum was 39.4°F on 2020.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 39.5°F, with minimum temperature starting at 38.9°F, while the maximum might reach 40.2°F.

Daily water temperature in Álftanes

Date	Current Year actual* / forecast**	last year	10 years average
Apr 9	37.2°F	41.3°F	38.9°F
Apr 10	37.5°F	39.8°F	38.8°F
Apr 11	37.9°F	41.1°F	39.1°F
Apr 12	37.8°F	42.4°F	39.3°F
Apr 13	37.7°F	42.2°F	39.2°F
Apr 14	38.0°F	42.3°F	39.3°F
Apr 15	38.2°F	41.8°F	39.6°F
Apr 16	38.1°F	41.9°F	39.7°F
Apr 17	38.6°F	42.2°F	39.8°F
Apr 18	38.9°F	42.2°F	40.0°F
Apr 19	40.5°F	41.9°F	40.3°F
Apr 20	40.6°F	41.8°F	40.4°F
Apr 21	40.9°F	42.7°F	40.6°F
Apr 22	40.0°F	42.2°F	40.6°F
Apr 23	38.5°F	42.3°F	40.9°F
Apr 24	38.9°F	42.3°F	41.3°F
Apr 25	39.2°F	43.3°F	41.6°F
Apr 26	39.4°F	43.4°F	41.8°F
Apr 27	39.5°F	43.6°F	41.9°F
Apr 28	39.4°F	43.3°F	41.8°F
Apr 29	39.9°F	43.6°F	42.3°F
Apr 30	40.2°F	43.5°F	42.6°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, 40.9°F in Spring, 51.6°F in Summer, and 47.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Kópavogur	38.5°F	3mi
Hafnarfjörður	38.7°F	3mi
Reykjavík	38.6°F	4mi
Akranes	38.7°F	15mi
Keflavík	42.3°F	18mi

* current water temperature in this city

** straight line distance from Álftanes