Swimming in Wales in october 2025 Sea temperature by city in october
Do you want to go to the beach in Wales in october 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in october in Wales by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Wales in october 2025
Here, find the average sea temperature in Wales in october in several coastal cities.
60°F
min: 58°F / max: 62°F
Conwy
58°F
min: 56°F / max: 61°F
Holyhead
58°F
min: 56°F / max: 60°F
59°F
min: 58°F / max: 62°F
Snowdonia National Park
58°F
min: 56°F / max: 60°F
60°F
min: 58°F / max: 62°F
Aberystwyth
59°F
min: 57°F / max: 61°F
Amlwch
58°F
min: 56°F / max: 60°F
59°F
min: 57°F / max: 60°F
Barry
60°F
min: 59°F / max: 62°F
Buckley
58°F
min: 56°F / max: 62°F
Fishguard
59°F
min: 57°F / max: 62°F
59°F
min: 56°F / max: 61°F
Llanelli
60°F
min: 58°F / max: 62°F
Porthcawl
60°F
min: 58°F / max: 62°F
Where should you go swimming in Wales in the month of october?
Swimming in Wales in october is cold (in the best case scenario)
In october in Wales swimming conditions vary by city. Details below:
Swimming in october in Cardiff, Swansea, Barry, Llanelli and Porthcawl is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 58°F/max: 62°F).
Forget about swimming in Conwy, Holyhead, Pembrokeshire, Snowdonia National Park, Aberystwyth, Amlwch, Barmouth, Buckley, Fishguard and Llandudno in october! The water temperature is freezing, reaching as low as 56°F (and only 61°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!
Where to go swimming in Wales in october: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in october
Cardiff
| October | |||
| Average sea temperature | 60°F | ||
| Minimum sea temperature | 58°F | ||
| Maximum sea temperature | 62°F | ||
| Average outside temperature | 56°F | ||
| Maximum outside temperature | 59°F | ||
| Minimum outside temperature | 52°F | ||
| Precipitation | 3in | ||
| Number of days of precipitation | 5 jour(s) (17%) | ||
| Cloud cover | 54% | ||
| Our opinion | cold swimming |
More information on swimming in Cardiff in october
Conwy
| October | |||
| Average sea temperature | 58°F | ||
| Minimum sea temperature | 56°F | ||
| Maximum sea temperature | 61°F | ||
| Average outside temperature | 54°F | ||
| Maximum outside temperature | 58°F | ||
| Minimum outside temperature | 52°F | ||
| Precipitation | 5.5in | ||
| Number of days of precipitation | 9 jour(s) (28%) | ||
| Cloud cover | 60% | ||
| Our opinion | freezing swimming |
Holyhead
| October | |||
| Average sea temperature | 58°F | ||
| Minimum sea temperature | 56°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 56°F | ||
| Maximum outside temperature | 58°F | ||
| Minimum outside temperature | 56°F | ||
| Precipitation | 7.1in | ||
| Number of days of precipitation | 11 jour(s) (35%) | ||
| Cloud cover | 59% | ||
| Our opinion | freezing swimming |
Pembrokeshire
| October | |||
| Average sea temperature | 59°F | ||
| Minimum sea temperature | 58°F | ||
| Maximum sea temperature | 62°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 59°F | ||
| Minimum outside temperature | 56°F | ||
| Precipitation | 7.6in | ||
| Number of days of precipitation | 11 jour(s) (35%) | ||
| Cloud cover | 56% | ||
| Our opinion | freezing swimming |
More information on swimming in Pembrokeshire in october
Snowdonia National Park
| October | |||
| Average sea temperature | 58°F | ||
| Minimum sea temperature | 56°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 49°F | ||
| Maximum outside temperature | 52°F | ||
| Minimum outside temperature | 45°F | ||
| Precipitation | 6.6in | ||
| Number of days of precipitation | 9 jour(s) (29%) | ||
| Cloud cover | 67% | ||
| Our opinion | freezing swimming |
List of coastal cities in Wales
| Cardiff in october | cold swimming |
| Conwy in october | freezing swimming |
| Holyhead in october | freezing swimming |
| Pembrokeshire in october | freezing swimming |
| Snowdonia National Park in october | freezing swimming |
| Swansea in october | cold swimming |
| Aberystwyth in october | freezing swimming |
| Amlwch in october | freezing swimming |
| Barmouth in october | freezing swimming |
| Barry in october | cold swimming |
| Buckley in october | freezing swimming |
| Fishguard in october | freezing swimming |
| Llandudno in october | freezing swimming |
| Llanelli in october | cold swimming |
| Porthcawl in october | cold swimming |