May
Weather in May
Sea temperature
In Runcorn, United Kingdom, in May, the average water temperature is 10.9°C (51.6°F).Note: Danger awaits those who swim in 10.9°C (51.6°F) without protection. Falling below 10°C (50°F) means intense cold shock and hyperventilation.
Daylight
The average length of the day in May is 15h and 54min.On the first day of the month, sunrise is at 5:35 am and sunset at 8:40 pm. On the last day of May, sunrise is at 4:49 am and sunset at 9:27 pm BST.
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
What is the sea water temperature in May?
In May, the average sea temperature is 10.9°C (51.6°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.
How many hours of daylight does Runcorn have in May?
In May, the average day length is 15h and 54min.
When are sunrise and sunset in May?
In May, on the first day of the month, sunrise is at 5:35 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 4:49 am and sunset at 9:27 pm BST.
Average sea temperature in May
Runcorn, United Kingdom
- Average sea temperature in May: 10.9°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 May
Runcorn, United Kingdom
- Average daylight in May: 15h and 5min
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).
