Sea temperature in Shannon in Ireland real-time sea temperature, 7-day forecast and historical data

Temperature of the sea in Shannon today

Currently, the sea water temperature in Shannon is at most:

52°F

(or 0° lower than the seasonal norm)

Other useful information about today's weather:

• Outside temperature: 43°F to 52°F
• Moderate or heavy rain in area with thunder
• The wind is blowing at 23mph
• Wave height is 9.8ft on average, and 5.6ft at most, with a frequency of a wave every 15.1 seconds.
• More details on the sea weather of Shannon page

This report was generated on 05/12/2025

7 day sea water temperature forecast in Shannon

Discover the weather forecast for the water temperature in Shannon for the next 7 days below. You will also find the 7-day forecast for outside temperature and wave height. For more details, hour by hour, see the chart below the listing.

Friday 5 December 2025

sea temperature:
52°F

Wave height: 9.5ft to 15.4ft

Outside temperature: 43°F to 52°F

Saturday 6 December 2025

sea temperature:
49°F

Wave height: 14.8ft to 21ft

Outside temperature: 50°F to 52°F

Sunday 7 December 2025

sea temperature:
49°F

Wave height: 7.5ft to 12.5ft

Outside temperature: 45°F to 52°F

Monday 8 December 2025

sea temperature:
49°F

Wave height: 6.2ft to 13.8ft

Outside temperature: 45°F to 52°F

Tuesday 9 December 2025

sea temperature:
49°F

Wave height: 9.8ft to 13.5ft

Outside temperature: 47°F to 49°F

Wednesday 10 December 2025

sea temperature:
49°F

Wave height: 9.2ft to 18ft

Outside temperature: 49°F to 50°F

Thursday 11 December 2025

sea temperature:
49°F

Wave height: 8.9ft to 12.5ft

Outside temperature: 49°F to 52°F

Chart of water temperature variation over 7 days

History of water temperature in Shannon

We record the water temperature daily in Shannon In this way, we can provide you with the average sea temperature in Shannon over the last 24 months and a more detailed chart for recent months.

Monthly sea temperature averages over 24 months

december 2025

Average water temperature: 52°F (52°F)

november 2025

Average water temperature: 54°F (50°F to 56°F)

october 2025

Average water temperature: 56°F (52°F to 58°F)

september 2025

Average water temperature: 59°F (56°F to 61°F)

august 2025

Average water temperature: 58°F (58°F to 61°F)

july 2025

Average water temperature: 57°F (56°F to 61°F)

june 2025

Average water temperature: 55°F (52°F to 59°F)

may 2025

Average water temperature: 51°F (49°F to 56°F)

april 2025

Average water temperature: 48°F (45°F to 52°F)

march 2025

Average water temperature: 46°F (45°F to 49°F)

february 2025

Average water temperature: 47°F (45°F to 50°F)

january 2025

Average water temperature: 49°F (47°F to 52°F)

december 2024

Average water temperature: 51°F (49°F to 54°F)

november 2024

Average water temperature: 53°F (50°F to 56°F)

october 2024

Average water temperature: 54°F (52°F to 58°F)

september 2024

Average water temperature: 58°F (56°F to 61°F)

august 2024

Average water temperature: 57°F (56°F to 59°F)

july 2024

Average water temperature: 56°F (54°F to 58°F)

june 2024

Average water temperature: 54°F (52°F to 58°F)

may 2024

Average water temperature: 50°F (49°F to 54°F)

april 2024

Average water temperature: 47°F (45°F to 52°F)

march 2024

Average water temperature: 47°F (45°F to 49°F)

february 2024

Average water temperature: 46°F (45°F to 49°F)

january 2024

Average water temperature: 49°F (47°F to 50°F)

Variation of water temperature in Shannon over the past 2 months