Shannon Sea Temperature

(Today) 2025

15°C / 59°F

The water will feel medium. The water will feel a bit chilly in just bathers / swimming costume. If you plan on wearing a wetsuit 4/3mm should be thick enough.

Current weather

15°C / 59°F
(broken clouds)
Partly cloudy
Wind
3 mph
Humidity
82%

The measurements for the water temperature in Shannon, Munster 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 Shannon water temperature derived from many years of historical sea surface temperature data.

Shannon average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Shannon
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 9.1 8.8 8.7 8.9 10.4 11 13 14.5 13.8 12.4 11.7 10.3
Max °C 11.1 10.4 10.1 11.6 12.4 15.3 17.3 17 16.5 15.3 13.6 12.1
Min °F 49.2 48.5 48.2 49.1 51.5 53.5 57.1 59.1 57.9 55.4 53.8 51.3
Max °F 51.2 50.1 49.6 51.8 53.5 57.8 61.4 61.6 60.6 58.3 55.7 53.1

The warmest water temperature is in August with an average around 60.3°F / 15.7°C. The coldest month is March with an average water temperature of 48.9°F / 9.4°C.

7 day tide forecast for Shannon

SatSunMonTueWedThuFri
  • High 12:50am
    (4.73m)
  • Low 07:02am
    (1.36m)
  • High 01:32pm
    (4.65m)
  • Low 07:44pm
    (1.58m)
  • High 02:02am
    (4.58m)
  • Low 08:22am
    (1.48m)
  • High 02:44pm
    (4.66m)
  • Low 09:11pm
    (1.52m)
  • High 03:19am
    (4.57m)
  • Low 09:45am
    (1.47m)
  • High 03:55pm
    (4.79m)
  • Low 10:32pm
    (1.33m)
  • High 04:30am
    (4.7m)
  • Low 11:00am
    (1.34m)
  • High 04:57pm
    (5.01m)
  • Low 11:43pm
    (1.05m)
  • High 05:37am
    (4.91m)
  • Low 12:07pm
    (1.14m)
  • High 05:57pm
    (5.25m)
  • Low 12:44am
    (0.77m)
  • High 06:29am
    (5.11m)
  • Low 12:17pm
    (0.96m)
  • High 06:45pm
    (5.46m)
  • Low 12:52am
    (0.57m)
  • High 07:16am
    (5.25m)
  • Low 01:09pm
    (0.83m)
  • High 07:29pm
    (5.59m)
7 day tide times for Shannon

*These tide times are estimates based on the nearest accurate location (Talbert Island, River Shannon, 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.