All data are in degrees Fahrenheit

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Water temperature in Dún Laoghaire

Detailed information about the current water temperature in Dún Laoghaire. 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.
Sea temperature in Dún Laoghaire now

55.6

°F

June 11, 02:27

Trend:

increasing

Yesterday:

55.5°F

Tomorrow:

55.8°F

Sunrise:

04:57

Sunset:

21:51

Day Length:

16 h. 54 min.

Dún Laoghaire in June

Minimum:

45.4°F

Average:

48.2°F

Maximum:

49.6°F

Sea water temperature in Dún Laoghaire today

As of now, in Dún Laoghaire, the water temperature is 55.6°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 about the same as 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 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 59.7°F on 2023, while the historical minimum was 52.7°F on 2015.

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 maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 55.9°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Dún Laoghaire

Date Current Year

actual* / forecast**

last year 10 years average
May 28 56.0°F 54.7°F 53.4°F
May 29 55.8°F 55.3°F 53.7°F
May 30 56.1°F 55.2°F 54.0°F
May 31 56.8°F 55.8°F 54.2°F
Jun 1 56.8°F 55.7°F 54.4°F
Jun 2 57.5°F 56.1°F 54.8°F
Jun 3 56.4°F 55.8°F 54.8°F
Jun 4 56.1°F 55.8°F 55.1°F
Jun 5 56.9°F 56.5°F 55.3°F
Jun 6 56.1°F 56.4°F 55.2°F
Jun 7 56.1°F 56.5°F 55.3°F
Jun 8 56.0°F 56.4°F 55.5°F
Jun 9 55.5°F 56.0°F 55.5°F
Jun 10 55.5°F 56.3°F 55.6°F
Jun 11 55.6°F 56.1°F 55.7°F
Jun 12 55.8°F 55.9°F 55.8°F
Jun 13 55.7°F 55.8°F 55.7°F
Jun 14 55.8°F 55.7°F 55.9°F
Jun 15 55.9°F 55.8°F 56.0°F
Jun 16 56.2°F 56.4°F 56.2°F
Jun 17 56.1°F 56.7°F 56.1°F
Jun 18 56.1°F 56.5°F 56.1°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 Dún Laoghaire by month

In an average year, Dún Laoghaire offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Dún Laoghaire was recorded on August 14, 2022, reaching a 62.6°F. While the coldest temperature occurred on March 11, 2018, dipping to 42.8°F. The average readings by season are 47.6°F in Winter, 48.6°F in Spring, 58.1°F in Summer, and 56.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Dublin 55.9°F 5mi
Bray 55.4°F 6mi
Greystones 55.5°F 11mi

* current water temperature in this city

** straight line distance from Dún Laoghaire