Climate and monthly weather forecast
Weather in January
In January, the average sea temperature in Saint Leonards, United Kingdom, is 8.8°C (47.8°F). Note: Dipping into 8.8°C (47.8°F) below 10°C (50°F) needs protective wear, or you'd face cold shock and breathing issues swiftly. Weather in January »
Weather in February
In Saint Leonards, United Kingdom, in February, the average water temperature is 8.5°C (47.3°F). Note: Being in 8.5°C (47.3°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 February »
Weather in March
March is the month with the coldest seawater in Saint Leonards, United Kingdom, with an average sea temperature of 8°C (46.4°F). Note: Beware of 8°C (46.4°F) waters at 13°C (55.4°F), they're uninviting, and a dip below 10°C (50°F) has risks of breath loss and cold shock, contingent on health. Weather in March »
Weather in April
In April, the average sea temperature in Saint Leonards, United Kingdom, is 9.7°C (49.5°F). Note: Taking a dip in 9.7°C (49.5°F) can be perilous. Submersion in temperatures under 10°C (50°F) triggers severe cold shock accompanied by hyperventilation. Weather in April »
Weather in May
In May, the average sea temperature in Saint Leonards, United Kingdom, is 11.7°C (53.1°F). Note: Swimming at temperatures less than 10°C (50°F) in 11.7°C (53.1°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. Weather in May »
Weather in June
In Saint Leonards, United Kingdom, the average seawater temperature in June is 13.8°C (56.8°F). Note: While a brief time in 13.8°C (56.8°F) at 13°C (55.4°F) is already bracing, plunging below 10°C (50°F) can severely affect breathing and introduce a cold shock, relying on your physical state. Weather in June »
Weather in July
In Saint Leonards, United Kingdom, the average seawater temperature in July is 15.6°C (60.1°F). Note: In water with a temperature of 15.6°C (60.1°F), most individuals do not find swimming enjoyable. Weather in July »
Weather in August
In Saint Leonards, United Kingdom, in August, the average water temperature is 17.3°C (63.1°F). Note: For the majority of people, swimming in water at 17.3°C (63.1°F) is not enjoyable. Weather in August »
Weather in September
With an average sea temperature of 17.5°C (63.5°F), September is the month with the warmest seawater in Saint Leonards, United Kingdom. Note: For most, swimming in 17.5°C (63.5°F) is not a pleasant experience. Weather in September »
Weather in October
In Saint Leonards, United Kingdom, the average seawater temperature in October is 16.3°C (61.3°F). Note: In water with a temperature of 16.3°C (61.3°F), most individuals do not find swimming enjoyable. Weather in October »
Weather in November
In Saint Leonards, United Kingdom, in November, the average water temperature is 14.6°C (58.3°F). Note: Being in 14.6°C (58.3°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 November »
Weather in December
In Saint Leonards, United Kingdom, the average seawater temperature in December is 11.6°C (52.9°F). Note: You can swim in 11.6°C (52.9°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. Weather in December »
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 month is the sea coldest in Saint Leonards?
The month with the coldest seawater is March, with an average sea temperature of 8°C (46.4°F).
When are the longest days in Saint Leonards?
June has the longest days of the year in Saint Leonards, with an average of 16h and 24min of daylight.
What is the month with the warmest sea water in Saint Leonards?
September is the month with the warmest seawater, with an average sea temperature of 17.5°C (63.5°F).
When is Daylight Saving Time (DST) in Saint Leonards?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Saint Leonards, 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 Saint Leonards?
With an average of 8h and 0min of daylight, December has the shortest days of the year in Saint Leonards, United Kingdom.
Average sea temperature
Saint Leonards, United Kingdom
The best month for swimming (with the highest average sea temperature) is September (17.5°C).
The coldest month (with the lowest average sea temperature) is March (8°C).
Average daylight
Saint Leonards, United Kingdom
- Average daylight in January:
8h and 3min - Average daylight in February:
10h and 0min - 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:
16h and 0min - Average daylight in August:
14h and 3min - 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 0min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
