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

Monthly weather forecast and climate
Isles of Scilly, United Kingdom

January, like December, is a frosty winter month in Isles of Scilly, United Kingdom, with average temperature varying between 9.7°C (49.5°F) and 6.2°C (43.2°F). January and February, with an average high-temperature of 9.7°C (49.5°F), are the coldest months. Weather in January »
The last month of the winter, February, is another chilly month in Isles of Scilly, United Kingdom, with average temperature fluctuating 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 fresh month in Isles of Scilly, United Kingdom, with average temperature fluctuating between 6.7°C (44.1°F) and 10.8°C (51.4°F). In Isles of Scilly, the average high-temperature is almost the same as in February - a fresh 10.8°C (51.4°F). Weather in March »

April, the same as March, is another fresh spring month in Isles of Scilly, United Kingdom, with temperature in the range of an average high of 12.3°C (54.1°F) and an average low of 7.2°C (45°F). In Isles of Scilly, the average high-temperature in April is essentially the same as in March - a still fresh 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 average temperature fluctuating between 14.5°C (58.1°F) and 9.4°C (48.9°F). In Isles of Scilly, the average high-temperature is relatively the same as in April - a moderate 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 17.1°C (62.8°F) and 11.9°C (53.4°F). In June, the average high-temperature is relatively the same as in May - a comfortable 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 ranging between min 13.8°C (56.8°F) and max 19.2°C (66.6°F). In Isles of Scilly, the average high-temperature is practically the same as in June - a still comfortable 19.2°C (66.6°F). Weather in July »

The last month of the summer, August, is another comfortable month in Isles of Scilly, United Kingdom, with temperature in the range of an average low of 14.1°C (57.4°F) and an average high of 19.7°C (67.5°F). With an average high-temperature of 19.7°C (67.5°F) and an average low-temperature of 14.1°C (57.4°F), August is the warmest month. Weather in August »

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

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

The last month of the autumn, November, is also a fresh month in Isles of Scilly, United Kingdom, with temperature in the range of an average low of 8.5°C (47.3°F) and an average high of 12.1°C (53.8°F). In Isles of Scilly, the average high-temperature in November is almost the same as in October - a fresh 12.1°C (53.8°F). Weather in November »

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

What is the coldest month in Isles of Scilly?

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

How many days does it rain in Isles of Scilly?

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

What are the months with 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 in Isles of Scilly, United Kingdom.

What month is the sea coldest in Isles of Scilly?

March is the month with the coldest seawater in Isles of Scilly, with an average sea temperature of 10.1°C (50.2°F).

What is the driest month in Isles of Scilly?

May and June are months with the least rain when the rain falls for 8.5 days and typically aggregates up to 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?

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

When is the highest UV index in Isles of Scilly?

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

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?

With an average sea temperature of 17.3°C (63.1°F), August is the month with the warmest seawater.

What is the rainiest month in Isles of Scilly?

The month with the most rainfall is December when the rain falls for 15.2 days and typically aggregates up to 98.2mm (3.9") of precipitation.

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

December has the shortest days of the year in Isles of Scilly, United Kingdom, with an average of 8.2h of daylight.

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

December has the least sunshine of the year, 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