Weather in January
In Hayle, United Kingdom, in January, the average water temperature is 10.4°C (50.7°F). Note: Swimming at temperatures less than 10°C (50°F) in 10.4°C (50.7°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. Weather in January »
Weather in February
In February, the average sea temperature in Hayle, United Kingdom, is 10°C (50°F). Note: It is life-risking to swim in 10°C (50°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance. Weather in February »
Weather in March
With an average sea temperature of 9.7°C (49.5°F), March is the month with the coldest seawater in Hayle, United Kingdom. Note: Being in 9.7°C (49.5°F) waters at 13°C (55.4°F) is discomforting, but anything below 10°C (50°F) can jeopardize breathing and induce cold shock, factoring in physical endurance. Weather in March »
Weather in April
In April, the average sea temperature in Hayle, United Kingdom, is 10.6°C (51.1°F). Note: Beware when you're in 10.6°C (51.1°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition. Weather in April »
Weather in May
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. Weather in May »
Weather in June
In June, the average sea temperature in Hayle, United Kingdom, is 14.1°C (57.4°F). Note: With an efficient thermal swimsuit, one can navigate 14.1°C (57.4°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Weather in June »
Weather in July
In Hayle, United Kingdom, in July, the average water temperature is 16.4°C (61.5°F). Note: For most individuals, swimming in 16.4°C (61.5°F) is not a pleasant experience. Weather in July »
Weather in August
With an average sea temperature of 17.1°C (62.8°F), August is the month with the warmest seawater in Hayle, United Kingdom. Note: A majority do not enjoy swimming in water at 17.1°C (62.8°F). Weather in August »
Weather in September
In September, the average sea temperature in Hayle, United Kingdom, is 16.3°C (61.3°F). Note: Most people do not find pleasure in swimming when the water temperature is 16.3°C (61.3°F). Weather in September »
Weather in October
In Hayle, United Kingdom, in October, the average water temperature is 14.8°C (58.6°F). Note: Dipping into 14.8°C (58.6°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Weather in October »
Weather in November
In Hayle, United Kingdom, in November, the average water temperature is 13.3°C (55.9°F). Note: Swimming in 13.3°C (55.9°F) is considered life-threatening. Weather in November »
Weather in December
In Hayle, United Kingdom, the average seawater temperature in December is 11.8°C (53.2°F). Note: It is risky to swim in 11.8°C (53.2°F). Temperatures beneath 10°C (50°F) induce rapid cold shock and hyperventilation. Weather in December »
[Resources]Frequently asked questions
What month is the sea coldest in Hayle?
March is the month with the coldest seawater in Hayle, with an average sea temperature of 9.7°C (49.5°F).
When are the longest days in Hayle?
With an average of 16h and 18min of daylight, June has the longest days of the year.
What is the month with the warmest sea water in Hayle?
With an average sea temperature of 17.1°C (62.8°F), August is the month with the warmest seawater in Hayle, United Kingdom.
When is Daylight Saving Time (DST) in Hayle?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Hayle, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to BST.
What is the month with the shortest days in Hayle?
The month with the shortest days is December, with an average of 8h and 6min of daylight.
Average sea temperature
Hayle, United Kingdom
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
Hayle, United Kingdom
- Average daylight in January:
8h and 4min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 5min - Average daylight in May:
15h and 3min - Average daylight in June:
16h and 2min
- Average daylight in July:
15h and 5min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 4min - Average daylight in November:
9h and 0min - Average daylight in December:
8h and 1min
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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