December weather forecastRuncorn, United Kingdom
December
Weather in December
Sea temperature
In Runcorn, United Kingdom, in December, the average water temperature is 9.7°C (49.5°F).Note: One needs to be cautious in 9.7°C (49.5°F) waters. 13°C (55.4°F) is already forbidding, but sub-10°C (14°F) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.
Daylight
December has the shortest days of the year, with an average of 7h and 36min of daylight.On the first day of the month, sunrise is at 8:03 am and sunset at 3:56 pm. On the last day of December, sunrise is at 8:26 am and sunset at 4:02 pm GMT.
Updated: Jul 11, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In December, the average sea temperature is 9.7°C (49.5°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.
December has the shortest days of the year, with an average of 7h and 36min of daylight.
In December, the average day length is 7h and 37min.
In December, on the first day of the month, sunrise is at 8:03 am and sunset at 3:56 pm. On the last day of the month, sunrise is at 8:26 am and sunset at 4:02 pm GMT.
Average sea temperature in December
Runcorn, United Kingdom
- Average sea temperature in December: 9.7°C
The best month for swimming (with the highest average sea temperature) is August (16.7°C).
The coldest months (with the lowest average sea temperature) are February and March (7.4°C).
Average daylight in December
Runcorn, United Kingdom
- Average daylight in December: 7h and 36min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
