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

October weather forecast and climate
Cairnryan, United Kingdom

Sea temperature

In October, the average sea temperature in Cairnryan, United Kingdom, is 13.7°C (56.7°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.


The average length of the day in October is 10.5h.

What is the water temperature in October in Cairnryan?

In Cairnryan, the average seawater temperature in October is 13.7°C (56.7°F). Swimming in 13.7°C (56.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Cairnryan have in October?

In Cairnryan, the average length of the day in October is 10.5h.
Average sea temperature in October - Cairnryan, United Kingdom
  • Average sea temperature in October: 13.7°C

Best months for swimming (with the highest average sea temperature) are August and September (14.3°C).
The coldest month (with the lowest average sea temperature) is March (7.8°C).

Average daylight in October - Cairnryan, United Kingdom
  • Average daylight in October: 10.5h

The month with the longest days is June (Average daylight: 17.3h).
The month with shortest days is December (Average daylight: 7.3h).