Weather in January
In January, the average sea temperature in Pwllheli, United Kingdom, is 8.8°C (47.8°F). Note: In 8.8°C (47.8°F), even brief exposure to 13°C (55.4°F) feels biting, and anything less than 10°C (50°F) risks cold shock and impaired breathing, considering one's health. Weather in January »
Weather in February
The months with the coldest seawater in Pwllheli, United Kingdom, are February and March, with an average sea temperature of 8.3°C (46.9°F). Note: Engaging in a swim in 8.3°C (46.9°F) can threaten life. Weather in February »
Weather in March
February and March, with an average sea temperature of 8.3°C (46.9°F), are months with the coldest seawater in Pwllheli, United Kingdom. Note: Swimming in 8.3°C (46.9°F) poses a severe threat. Weather in March »
Weather in April
In Pwllheli, United Kingdom, the average seawater temperature in April is 9.2°C (48.6°F). Note: Swimming in 9.2°C (48.6°F) is considered life-threatening. Weather in April »
Weather in May
In Pwllheli, United Kingdom, the average seawater temperature in May is 10.8°C (51.4°F). Note: With the appropriate swimsuit, one can swim in 10.8°C (51.4°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. Weather in May »
Weather in June
In Pwllheli, United Kingdom, the average seawater temperature in June is 12.8°C (55°F). Note: Beware of 12.8°C (55°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 June »
Weather in July
In Pwllheli, United Kingdom, the average seawater temperature in July is 14.6°C (58.3°F). Note: Without suitable protection, venturing into 14.6°C (58.3°F) waters cooler than 10°C (50°F) can lead to pronounced cold shock and rapid breaths. Weather in July »
Weather in August
In August, the average sea temperature in Pwllheli, United Kingdom, is 15.5°C (59.9°F). Note: A majority do not enjoy swimming in water at 15.5°C (59.9°F). Weather in August »
Weather in September
The month with the warmest seawater in Pwllheli, United Kingdom, is September, with an average sea temperature of 15.7°C (60.3°F). Note: Swimming is not enjoyable for most people in water that is 15.7°C (60.3°F). Weather in September »
Weather in October
In October, the average sea temperature in Pwllheli, United Kingdom, is 14.5°C (58.1°F). Note: If planning to swim in 14.5°C (58.1°F) under 10°C (50°F), wear a protective suit. Weather in October »
Weather in November
In Pwllheli, United Kingdom, the average seawater temperature in November is 13.1°C (55.6°F). Note: Swimming in 13.1°C (55.6°F) is considered life-threatening. Weather in November »
Weather in December
In Pwllheli, United Kingdom, in December, the average water temperature is 10.8°C (51.4°F). Note: Danger awaits those who swim in 10.8°C (51.4°F) without protection. Weather in December »
[Resources]Frequently asked questions
What are the months with the coldest sea water in Pwllheli?
February and March, with an average sea temperature of 8.3°C (46.9°F), are months with the coldest seawater.
When are the longest days in Pwllheli?
The month with the longest days in Pwllheli is June, with an average of 16h and 48min of daylight.
When is the sea warmest in Pwllheli?
September is the month with the warmest seawater in Pwllheli, United Kingdom, with an average sea temperature of 15.7°C (60.3°F).
When is Daylight Saving Time (DST) in Pwllheli?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Pwllheli, 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 Pwllheli?
December has the shortest days of the year, with an average of 7h and 42min of daylight.
Average sea temperature
Pwllheli, United Kingdom
The best month for swimming (with the highest average sea temperature) is September (15.7°C).
The coldest months (with the lowest average sea temperature) are February and March (8.3°C).
Average daylight
Pwllheli, United Kingdom
- Average daylight in January:
8h and 1min - Average daylight in February:
9h and 5min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 0min - Average daylight in May:
15h and 5min - Average daylight in June:
16h and 5min
- Average daylight in July:
16h and 2min - Average daylight in August:
14h and 4min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 4min - Average daylight in November:
8h and 4min - Average daylight in December:
7h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
Pwllheli, United Kingdom
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