What is the current water temperature in Hafnarfjörður?

Q: What is the current water temperature in Hafnarfjörður?

As of now, in Hafnarfjörður, the water temperature is 3.82°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 > Hafnarfjörður

Water temperature in Hafnarfjörður

Detailed information about the current water temperature in Hafnarfjörður. 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.

38.9

°F

January 23, 22:38

Trend:

stable

Yesterday:

38.8°F

Tomorrow:

38.8°F

Sunrise:

10:35

Sunset:

16:46

Day Length:

6 h. 11 min.

Hafnarfjörður in January

Minimum:

35.1°F

Average:

38.1°F

Maximum:

40.6°F

Sea water temperature in Hafnarfjörður today

As of now, in Hafnarfjörður, the water temperature is 38.9°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 1.8°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 stay about the same.

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 maximum temperature for this date. The maximum temperature recorded for this date was 38.7°F on 2019, while the historical minimum was 34.1°F on 2023.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 38.8°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Hafnarfjörður

Date	Current Year actual* / forecast**	last year	10 years average
Jan 9	40.3°F	37.0°F	37.5°F
Jan 10	40.1°F	37.1°F	37.7°F
Jan 11	39.7°F	36.9°F	37.6°F
Jan 12	39.7°F	37.0°F	37.4°F
Jan 13	40.1°F	37.3°F	37.6°F
Jan 14	39.5°F	36.8°F	37.5°F
Jan 15	39.6°F	37.1°F	37.5°F
Jan 16	39.3°F	37.8°F	37.6°F
Jan 17	38.6°F	37.6°F	37.5°F
Jan 18	38.4°F	37.5°F	37.4°F
Jan 19	38.4°F	37.5°F	37.2°F
Jan 20	38.8°F	37.6°F	37.3°F
Jan 21	38.9°F	37.5°F	37.3°F
Jan 22	38.8°F	37.3°F	37.2°F
Jan 23	38.9°F	37.8°F	37.1°F
Jan 24	38.8°F	37.7°F	37.0°F
Jan 25	38.7°F	38.0°F	37.0°F
Jan 26	38.7°F	38.0°F	36.9°F
Jan 27	38.8°F	38.2°F	37.0°F
Jan 28	38.9°F	38.3°F	37.1°F
Jan 29	39.0°F	38.1°F	37.2°F
Jan 30	38.9°F	37.7°F	37.1°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 Hafnarfjörður by month

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

The warmest water in Hafnarfjörður was recorded on September 5, 2025, reaching a 56.4°F. While the coldest temperature occurred on January 24, 2023, dipping to 33.8°F. The average readings by season are 37.7°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	38.9°F	3mi
Álftanes	38.9°F	3mi
Reykjavík	38.9°F	5mi
Akranes	38.9°F	18mi
Keflavík	41.0°F	19mi

* current water temperature in this city

** straight line distance from Hafnarfjörður