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

September weather forecast and climate
Bo'ness, United Kingdom

Sea temperature

In Bo'ness, United Kingdom, the average seawater temperature in September is 14.1°C (57.4°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 September in Bo'ness, United Kingdom, is 12.7h.

How cold is the water in September in Bo'ness?

In Bo'ness, in September, the average water temperature is 14.1°C (57.4°F). Swimming in 14.1°C (57.4°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in September in Bo'ness?

In September, the average length of the day in Bo'ness is 12.7h.
Average sea temperature in September - Bo
  • Average sea temperature in September: 14.1°C

The best month for swimming (with the highest average sea temperature) is August (14.5°C).
Coldest months (with the lowest average sea temperature) are February and March (7°C).

Average daylight in September - Bo
  • Average daylight in September: 12.7h

The month with the longest days is June (Average daylight: 17.5h).
The month with shortest days is December (Average daylight: 7.1h).