Weather in January
In Isle of Bute, United Kingdom, in January, the average water temperature is 8.4°C (47.1°F). Note: Unprotected swimming in 8.4°C (47.1°F) is dangerous due to potential cold shock. Weather in January »
Weather in February
In Isle of Bute, United Kingdom, in February, the average water temperature is 7.8°C (46°F). Note: You can swim in 7.8°C (46°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. Weather in February »
Weather in March
The month with the coldest seawater in Isle of Bute, United Kingdom, is March, with an average sea temperature of 7.7°C (45.9°F). Note: Unprotected swimming in 7.7°C (45.9°F) is dangerous due to potential cold shock. Weather in March »
Weather in April
In Isle of Bute, United Kingdom, in April, the average water temperature is 8.6°C (47.5°F). Note: With the appropriate swimsuit, one can swim in 8.6°C (47.5°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. Weather in April »
Weather in May
In Isle of Bute, United Kingdom, in May, the average water temperature is 9.8°C (49.6°F). Note: Engaging in a swim in 9.8°C (49.6°F) can threaten life. Weather in May »
Weather in June
In June, the average sea temperature in Isle of Bute, United Kingdom, is 11.7°C (53.1°F). Note: In 11.7°C (53.1°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F). Weather in June »
Weather in July
In July, the average sea temperature in Isle of Bute, United Kingdom, is 13.4°C (56.1°F). Note: To swim in 13.4°C (56.1°F) at less than 10°C (50°F), ensure you're well-protected. Weather in July »
Weather in August
The months with the warmest seawater in Isle of Bute, United Kingdom, are August and September, with an average sea temperature of 13.9°C (57°F). Note: It is advised against swimming in 13.9°C (57°F) when it drops below 10°C (50°F). Weather in August »
Weather in September
August and September, with an average sea temperature of 13.9°C (57°F), are months with the warmest seawater in Isle of Bute, United Kingdom. Note: Immersing oneself in 13.9°C (57°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped. Weather in September »
Weather in October
In Isle of Bute, United Kingdom, the average seawater temperature in October is 13.3°C (55.9°F). Note: One needs to be cautious in 13.3°C (55.9°F) waters. Weather in October »
Weather in November
In Isle of Bute, United Kingdom, the average seawater temperature in November is 12.2°C (54°F). Note: It is life-risking to swim in 12.2°C (54°F). Weather in November »
Weather in December
In December, the average sea temperature in Isle of Bute, United Kingdom, is 10.3°C (50.5°F). Note: Taking a dip in 10.3°C (50.5°F) can be perilous. Weather in December »
[Resources]Frequently asked questions
What month is the sea coldest in Isle of Bute?
The month with the coldest seawater is March, with an average sea temperature of 7.7°C (45.9°F).
When are the longest days in Isle of Bute?
The month with the longest days in Isle of Bute is June, with an average of 17h and 30min of daylight.
What are the months with the warmest sea water in Isle of Bute?
August and September, with an average sea temperature of 13.9°C (57°F), are months with the warmest seawater.
When is Daylight Saving Time (DST) in Isle of Bute?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends, 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 Isle of Bute?
December has the shortest days of the year in Isle of Bute, with an average of 7h and 6min of daylight.
Average sea temperature
Isle of Bute, United Kingdom
The best months for swimming (with the highest average sea temperature) are August and September (13.9°C).
The coldest month (with the lowest average sea temperature) is March (7.7°C).
Average daylight
Isle of Bute, United Kingdom
- Average daylight in January:
7h and 5min - Average daylight in February:
9h and 4min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 1min - Average daylight in May:
16h and 2min - Average daylight in June:
17h and 3min
- Average daylight in July:
16h and 5min - Average daylight in August:
15h and 0min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 2min - Average daylight in November:
8h and 2min - Average daylight in December:
7h and 1min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
Isle of Bute, United Kingdom
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