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

September weather forecast and climate
Carrickfergus, United Kingdom

Sea temperature

The month with the warmest seawater in Carrickfergus, United Kingdom, is September, with an average sea temperature of 14.3°C (57.7°F).
Note: Swimming in 14.3°C (57.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In Carrickfergus, the average length of the day in September is 12.7h.

What month is the sea warmest in Carrickfergus?

September is the month with the warmest seawater in Carrickfergus, United Kingdom, with an average sea temperature of 14.3°C (57.7°F).

What is the water temperature in September in Carrickfergus?

In Carrickfergus, United Kingdom, in September, the average water temperature is 14.3°C (57.7°F). 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.

What is the average length of the day in September in Carrickfergus?

In September, the average length of the day is 12.7h.
Average sea temperature in September - Carrickfergus, United Kingdom
  • Average sea temperature in September: 14.3°C

The best month for swimming (with the highest average sea temperature) is September (14.3°C).
The coldest month (with the lowest average sea temperature) is March (8°C).

Average daylight in September - Carrickfergus, United Kingdom
  • Average daylight in September: 12.7h

The month with the longest days is June (Average daylight: 17.2h).
The month with shortest days is December (Average daylight: 7.3h).