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Warmest sea temperature in Ireland in January

Where the sea is warmest across Ireland during January, ranked by long-term monthly average water temperature. Inchydoney (West Coast, Ireland) tops the list at around 10°C. Open any spot for today's live water temperature and a 7-day swim forecast.

  1. 1
    Inchydoney
    West Coast · Ireland · Celtic Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  2. 2
    Derrynane
    West Coast · Ireland · Celtic Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  3. 3
    Inch Beach
    West Coast · Ireland · Celtic Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  4. 4
    Fanore
    West Coast · Ireland · Celtic Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  5. 5
    Keem Bay
    West Coast · Ireland · Celtic Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  6. 6
    Dog's Bay
    West Coast · Ireland · Celtic Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  7. 7
    Streedagh
    West Coast · Ireland · Celtic Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  8. 8
    Brittas Bay
    East Coast · Ireland · Irish Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  9. 9
    Curracloe
    East Coast · Ireland · Irish Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  10. 10
    Portmarnock
    East Coast · Ireland · Irish Sea
    Cold — wetsuit strongly recommended
    10°C
    January average
  11. 11
    Greystones South
    County Wicklow · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  12. 12
    Bray Beach
    County Wicklow · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  13. 13
    Killiney Beach
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  14. 14
    Seapoint
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  15. 15
    Sandycove
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  16. 16
    Forty Foot
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  17. 17
    Portmarnock Beach
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  18. 18
    Donabate Beach
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  19. 19
    Portrane Beach
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  20. 20
    Skerries South Strand
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  21. 21
    Balbriggan Front Strand
    County Dublin · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  22. 22
    Bettystown Beach
    County Meath · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  23. 23
    Laytown Beach
    County Meath · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  24. 24
    Clogherhead Beach
    County Louth · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average
  25. 25
    Templetown Beach
    County Louth · Ireland · Atlantic Ocean
    Cold — wetsuit strongly recommended
    10°C
    January average

Warmest sea in January elsewhere

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Ireland in January — frequently asked questions

Where is the sea warmest in Ireland in January?
Inchydoney in Ireland has the warmest sea in Ireland in January, averaging about 10.0 °C. Derrynane (10.0 °C) and Inch Beach follow close behind.
How many beaches in Ireland are warm enough to swim in January?
None of the top 25 ranked beaches in Ireland reach 22 °C in January, so a wetsuit is recommended for anything longer than a quick dip.
How are these January sea temperatures calculated?
Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical January rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

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