Isles of Scilly
United Kingdom
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Isles of Scilly, United Kingdom

January, the same as December, in Isles of Scilly, United Kingdom, is another chilly winter month, with temperature in the range of an average high of 9.7°C (49.5°F) and an average low of 6.2°C (43.2°F). The coldest months are January and February, with an average high-temperature of 9.7°C (49.5°F). Weather in January »
The last month of the winter, February, is another chilly month in Isles of Scilly, United Kingdom, with average temperature varying between 6°C (42.8°F) and 9.7°C (49.5°F). The coldest months are January and February, with an average high-temperature of 9.7°C (49.5°F). Weather in February »

The first month of the spring, March, is a cool month in Isles of Scilly, United Kingdom, with average temperature fluctuating between 10.8°C (51.4°F) and 6.7°C (44.1°F). In Isles of Scilly, the average high-temperature in March is practically the same as in February - a cool 10.8°C (51.4°F). Weather in March »

April, the same as March, is a cool spring month in Isles of Scilly, United Kingdom, with average temperature ranging between min 7.2°C (45°F) and max 12.3°C (54.1°F). In April, the average high-temperature is practically the same as in March - a still cool 12.3°C (54.1°F). Weather in April »

May, the last month of the spring, in Isles of Scilly, is a mild month, with temperature in the range of an average high of 14.5°C (58.1°F) and an average low of 9.4°C (48.9°F). In May, the average high-temperature is almost the same as in April - a mild 14.5°C (58.1°F). Weather in May »

June, the first month of the summer, in Isles of Scilly, is a comfortable month, with average temperature varying between 11.9°C (53.4°F) and 17.1°C (62.8°F). In June, the average high-temperature is relatively the same as in May - an enjoyable 17.1°C (62.8°F). Weather in June »

July, like June, in Isles of Scilly, United Kingdom, is another comfortable summer month, with average temperature fluctuating between 19.2°C (66.6°F) and 13.8°C (56.8°F). In Isles of Scilly, the average high-temperature is practically the same as in June - a still enjoyable 19.2°C (66.6°F). Weather in July »

August, the last month of the summer, in Isles of Scilly, is also an enjoyable month, with average temperature varying between 19.7°C (67.5°F) and 14.1°C (57.4°F). The warmest month is August, with an average high-temperature of 19.7°C (67.5°F) and an average low-temperature of 14.1°C (57.4°F). Weather in August »

The first month of the autumn, September, is also an enjoyable month in Isles of Scilly, United Kingdom, with average temperature varying between 12.9°C (55.2°F) and 18°C (64.4°F). In September, the average high-temperature is essentially the same as in August - a still comfortable 18°C (64.4°F). Weather in September »

October, the same as September, in Isles of Scilly, United Kingdom, is a moderate autumn month, with average temperature varying between 14.7°C (58.5°F) and 10.6°C (51.1°F). In October, the average high-temperature marginally drops, from a comfortable 18°C (64.4°F) in September, to a moderate 14.7°C (58.5°F). Weather in October »

November, the last month of the autumn, in Isles of Scilly, is another cool month, with average temperature varying between 8.5°C (47.3°F) and 12.1°C (53.8°F). In November, the average high-temperature is almost the same as in October - a fresh 12.1°C (53.8°F). Weather in November »

The first month of the winter, December, is still a cool month in Isles of Scilly, United Kingdom, with average temperature varying between 10.4°C (50.7°F) and 6.9°C (44.4°F). In December, the average high-temperature is practically the same as in November - a still cool 10.4°C (50.7°F). Weather in December »

What are the coldest months in Isles of Scilly?

The coldest months in Isles of Scilly are January and February, with an average high-temperature of 9.7°C (49.5°F).

How much does it rain in Isles of Scilly?

Throughout the year, in Isles of Scilly, there are 138.1 rainfall days, and 865.1mm (34.1") of precipitation is accumulated.

When is the lowest UV index in Isles of Scilly?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

When is the sea coldest in Isles of Scilly?

March is the month with the coldest seawater, with an average sea temperature of 10.1°C (50.2°F). Swimming in 10.1°C (50.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the driest month in Isles of Scilly?

Months with the least rainfall are May and June Rain falls for 8.5 days and accumulates 47.8mm (1.9") of rain.

What month has the most sunshine in Isles of Scilly?

May has the most sunshine of the year in Isles of Scilly, United Kingdom, with an average of 7h of sunshine.

When are the longest days in Isles of Scilly?

With an average of 16.3h of daylight, June has the longest days of the year.

What is the month with the highest UV index in Isles of Scilly?

The month with the highest UV index in Isles of Scilly, United Kingdom, is July, with an average maximum UV index of 7.

What is the warmest month in Isles of Scilly?

The warmest month is August, with an average high-temperature of 19.7°C (67.5°F) and an average low-temperature of 14.1°C (57.4°F).

When is the sea warmest in Isles of Scilly?

August is the month with the warmest seawater, with an average sea temperature of 17.3°C (63.1°F). For most, swimming in 17.3°C (63.1°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the wettest month in Isles of Scilly?

December is the month with the most rainfall. Rain falls for 15.2 days and accumulates 98.2mm (3.9") of precipitation.

What is the month with the shortest days in Isles of Scilly?

The month with the shortest days in Isles of Scilly is December, with an average of 8.2h of daylight.

What is the month with the least sunshine in Isles of Scilly?

The month with the least sunshine in Isles of Scilly, United Kingdom, is December, with an average of 1.8h of sunshine.
Average temperature - Isles of Scilly, United Kingdom
Average rainfall - Isles of Scilly, United Kingdom

The wettest month (with the highest rainfall) is December (98.2mm).
Driest months (with the lowest rainfall) are May and June (47.8mm).

Average rainfall days - Isles of Scilly, United Kingdom

The month with the highest number of rainy days is December (15.2 days).
The month with the lowest number of rainy days is June (6.9 days).

Average sea temperature - Isles of Scilly, United Kingdom

The best month for swimming (with the highest average sea temperature) is August (17.3°C).
The coldest month (with the lowest average sea temperature) is March (10.1°C).

Average daylight / Average sunshine - Isles of Scilly, United Kingdom
Average UV index - Isles of Scilly, United Kingdom