Swimming in Llandudno in september 2025: Average sea temperature in september and tide times in september 2025

Average sea temperature in Llandudno in september 2025.

In september, according to seasonal norms, the sea temperature in Llandudno is:

Minimum: 60°F

Average: 61°F

Maximum: 63°F

Other useful seasonal weather averages in september:

  • Outside temperature: 54°F to 61°F
  • Most common weather: "Moderate rain at times"
  • The wind blows at 6.8mph
  • It rains a total of 4.4in, over 8 day(s).

Should we swim in Llandudno in september?

No... The water temperature in Llandudno in september is cold

Swimming in Llandudno in september is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average sea temperature of 61°F (minimum: 60°F - maximum: 63°F).

Note also that in september, the climate is good with an average outside temperature of 57°F, 4.4in of precipitation (over 8 days) and 88.85 % humidity.

Water and normal seasonal temperatures in Llandudno in september

September
Average sea temperature 61°F
Minimum sea temperature 60°F
Maximum sea temperature 63°F
Average outside temperature 58°F
Maximum outside temperature 61°F
Minimum outside temperature 54°F
Wind speed 13.7mph
Wind temperature 52°F
Precipitation 4.4in
Number of days of rain 8 jour(s)
(25%)
Humidity 89%
Visibility in kilometers 9.18km
Cloud cover 53%
Our opinion cold swimming

Chart of the tides in september 2025

Tide times in september 2025 in Llandudno

Swim elsewhere in Wales in september

City Average T° Max. T° Our opinion
Cardiff in september62°F64°Fcold swimming
Pembrokeshire in september61°F63°Fcold swimming
Swansea in september62°F64°Fcold swimming
Barmouth in september61°F62°Fcold swimming

Swim in Wales in september: sea temperature by city

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