Weather in May
Sea temperature
In May, the average sea temperature in Hayle, United Kingdom, is 12°C (53.6°F).Note: If planning to swim in 12°C (53.6°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
In Hayle, the average length of the day in May is 15h and 28min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:41 pm. On the last day of May, sunrise is at 5:16 am and sunset at 9:22 pm BST.
Updated: Feb 8, 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 Hayle?
In May, the average sea temperature in Hayle, United Kingdom, is 12°C (53.6°F). Swimming in 12°C (53.6°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 May in Hayle?
In Hayle, United Kingdom, the average day length in May is 15h and 28min.
When is the sunrise / sunset in May in Hayle?
On the first day of May in Hayle, United Kingdom, sunrise is at 5:56 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 9:22 pm BST.
Average sea temperature in May
Hayle, United Kingdom
- Average sea temperature in May: 12°C
The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).
Average daylight in May
Hayle, United Kingdom
- Average daylight in May: 15h and 3min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
Hayle, United Kingdom
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