Dún Laoghaire Sea Temperature

(Today) 2024

12.6°C / 54.6°F

The water will feel cool (fresh). Probably too cold for all but seasoned swimmers. We'd recommend a 4mm or 5mm wetsuit if you want to stay in the water.

Current weather

2°C / 36°F
(broken clouds)
Partly cloudy
Wind
11 mph
Humidity
86%

The measurements for the water temperature in Dún Laoghaire, Leinster are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Dún Laoghaire water temperature derived from many years of historical sea surface temperature data.

Dún Laoghaire average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Dún Laoghaire
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 8.3 7.8 7.8 8.2 9.7 10.5 12.7 14.1 13.9 12.7 11.8 9.9
Max °C 10.8 9.8 9.5 10.5 11.6 14.3 16 15.8 15.5 14.7 13.6 12.2
Min °F 47.9 46.8 46.7 47.6 50.2 52.4 56.1 58 57.7 55.7 54 50.7
Max °F 50.4 48.8 48.4 49.9 52.1 56.2 59.4 59.7 59.3 57.7 55.8 53

The warmest water temperature is in August with an average around 58.8°F / 14.9°C. The coldest month is March with an average water temperature of 47.5°F / 8.6°C.

7 day tide forecast for Dún Laoghaire

ThuFriSatSunMonTueWed
  • High 03:14am
    (3.58m)
  • Low 08:30am
    (1.47m)
  • High 03:21pm
    (3.77m)
  • Low 09:15pm
    (1.24m)
  • High 04:17am
    (3.39m)
  • Low 09:29am
    (1.67m)
  • High 04:22pm
    (3.63m)
  • Low 10:25pm
    (1.4m)
  • High 05:22am
    (3.29m)
  • Low 10:40am
    (1.8m)
  • High 05:26pm
    (3.54m)
  • Low 11:41pm
    (1.47m)
  • High 06:26am
    (3.27m)
  • Low 11:59am
    (1.8m)
  • High 06:30pm
    (3.54m)
  • Low 12:50am
    (1.43m)
  • High 07:20am
    (3.34m)
  • Low 01:06pm
    (1.7m)
  • High 07:23pm
    (3.58m)
  • Low 01:44am
    (1.35m)
  • High 08:10am
    (3.44m)
  • Low 01:58pm
    (1.56m)
  • High 08:15pm
    (3.66m)
  • Low 02:28am
    (1.26m)
  • High 08:52am
    (3.57m)
  • Low 02:42pm
    (1.42m)
  • High 08:59pm
    (3.74m)
7 day tide times for Dún Laoghaire

*These tide times are estimates based on the nearest accurate location (Dublin, Ireland) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.