United Kingdom
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Conwy, United Kingdom

Sea temperature

In Conwy, United Kingdom, the average seawater temperature in May is 10.9°C (51.6°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.


In Conwy, the average length of the day in May is 15.9h.

What is the sea water temperature in May in Conwy?

In Conwy, United Kingdom, in May, the average water temperature is 10.9°C (51.6°F). Swimming in 10.9°C (51.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in May in Conwy?

In May, the average length of the day in Conwy is 15.9h.
Average sea temperature in May - Conwy, United Kingdom
  • Average sea temperature in May: 10.9°C

The best month for swimming (with the highest average sea temperature) is August (16.3°C).
Coldest months (with the lowest average sea temperature) are February and March (7.7°C).

Average daylight in May - Conwy, United Kingdom
  • Average daylight in May: 15.9h

The month with the longest days is June (Average daylight: 16.9h).
The month with shortest days is December (Average daylight: 7.6h).