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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Scilly, Ireland, with an average temperature ranging between min 4.4°C (39.9°F) and max 8.3°C (46.9°F). January, known for its average high temperature of 8.3°C (46.9°F) and an average low temperature of 4.4°C (39.9°F), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also a frosty month in Scilly, Ireland, with temperature in the range of an average low of 3.9°C (39°F) and an average high of 8.5°C (47.3°F). February reports an average high-temperature of a still chilly 8.5°C (47.3°F), slightly varied from January's 8.3°C (46.9°F). Weather in February »
Weather in March
The first month of the spring, March, is also a frosty month in Scilly, Ireland, with an average temperature ranging between min 4°C (39.2°F) and max 9.5°C (49.1°F). In March, Scilly's weather conditions record an average high-temperature of a still chilly 9.5°C (49.1°F), demonstrating little divergence from the preceding month. Weather in March »
Weather in April
April in Scilly, Ireland, is a fresh spring month, with an average temperature ranging between min 5.6°C (42.1°F) and max 11.3°C (52.3°F). April brings an average high-temperature of a cool 11.3°C (52.3°F), nearly identical to the preceding month. Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Scilly, Ireland, with an average temperature fluctuating between 13.6°C (56.5°F) and 7.5°C (45.5°F). Scilly's average high-temperature marks a moderate 13.6°C (56.5°F) with the advent of May, closely mirroring that of the preceding month. Weather in May »
Weather in June
The first month of the summer, June, is a comfortable month in Scilly, Ireland, with an average temperature fluctuating between 10.3°C (50.5°F) and 16.2°C (61.2°F). With the advent of June, Scilly's high-temperatures adjust to an enjoyable 16.2°C (61.2°F), closely aligning with the preceding month. Weather in June »
Weather in July
July, the same as June, is another comfortable summer month in Scilly, Ireland, with an average temperature varying between 17.8°C (64°F) and 12.1°C (53.8°F). July, recording an average high temperature of 17.8°C (64°F) and a low temperature of 12.1°C (53.8°F), is Scilly's warmest month. Weather in July »
Weather in August
August, the last month of the summer in Scilly, is also an enjoyable month, with an average temperature ranging between min 11.9°C (53.4°F) and max 17.6°C (63.7°F). Transitioning from July to August, Scilly observes an average high-temperature of a still comfortable 17.6°C (63.7°F), differing subtly from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a refreshing month in Scilly, Ireland, with an average temperature varying between 10.5°C (50.9°F) and 15.9°C (60.6°F). The initiation of September sees an average high-temperature of a mild 15.9°C (60.6°F), showing minor variations from the previous month. Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Scilly, Ireland, with an average temperature ranging between min 8.9°C (48°F) and max 13.6°C (56.5°F). October records an average high-temperature of a still moderate 13.6°C (56.5°F), indicating a minor variation from the preceding month. Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Scilly, Ireland, with an average temperature fluctuating between 6.3°C (43.3°F) and 10.2°C (50.4°F). The shift from October to November includes a small decrease in the average high-temperature, from a mild 13.6°C (56.5°F) to a fresh 10.2°C (50.4°F). Weather in November »
Weather in December
December, the first month of the winter in Scilly, is also a frosty month, with an average temperature fluctuating between 5°C (41°F) and 8.8°C (47.8°F). The commencement of December brings an average high-temperature of a frosty 8.8°C (47.8°F), marking an inconsequential divergence from November. Weather in December »
Updated: Jul 23, 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 is the coldest month?
January, characterized by an average high temperature of 8.3°C (46.9°F) and a low temperature of 4.4°C (39.9°F), is generally the coldest month.
How many days does it rain?
Throughout the year, there are 198 rainfall days, and 586mm (23.07") of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March, November and December.
How much does it snow?
In Scilly, during the entire year, snow falls for 3.8 days and aggregates up to 20mm (0.79") of snow.
What is the month with the least sunshine?
With an average of 4.1h of sunshine, January has the least sunshine of the year.
When is the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What are the least humid months?
February through April, with an average relative humidity of 84%, are the least humid months.
What is the driest month?
March is the month with the least rainfall. Rain falls for 13.8 days and accumulates 33mm (1.3") of precipitation.
When does it snow the most in Scilly?
The month with the most snowfall is March, when snow falls for 0.9 days and typically aggregates up to 6mm (0.24") of snow.
When it does not snow?
April through October are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 16h and 36min of daylight.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 7.4h of sunshine.
When is the highest UV index?
June through August, with an average maximum UV index of 4, are months with the highest UV index.
What time of the year is the hottest?
In Scilly, the average highest temperatures are observed in July, with a high of 17.8°C (64°F) and a low of 12.1°C (53.8°F).
What is the most humid month?
October and December, with an average relative humidity of 87%, are most humid months.
When is Daylight Saving Time (DST)?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from IST to GMT. Daylight Saving Time ends on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to IST.
What is the rainiest month?
The month with the most rainfall in Scilly is December, when the rain falls for 16.3 days and typically aggregates up to 66mm (2.6") of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 7h and 54min of daylight.
Average temperature
Scilly, Ireland
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is January (8.3°C).
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure
Scilly, Ireland
- Average pressure in January:
1012.6mbar - Average pressure in February:
1012.1mbar - Average pressure in March:
1014.8mbar - Average pressure in April:
1014.7mbar - Average pressure in May:
1016.4mbar - Average pressure in June:
1015.8mbar
- Average pressure in July:
1014.9mbar - Average pressure in August:
1013.8mbar - Average pressure in September:
1016.2mbar - Average pressure in October:
1012.9mbar - Average pressure in November:
1009mbar - Average pressure in December:
1012.3mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009mbar).
Average wind speed
Scilly, Ireland
- Average wind speed in January:
22.5km/h - Average wind speed in February:
23km/h - Average wind speed in March:
20km/h - Average wind speed in April:
17.8km/h - Average wind speed in May:
17.5km/h - Average wind speed in June:
16.1km/h
- Average wind speed in July:
16.1km/h - Average wind speed in August:
17.1km/h - Average wind speed in September:
17.5km/h - Average wind speed in October:
18.7km/h - Average wind speed in November:
21.4km/h - Average wind speed in December:
23.5km/h
The windiest month (with the highest average wind speed) is December (23.5km/h).
The calmest months (with the lowest average wind speed) are June and July (16.1km/h).
Average humidity
Scilly, Ireland
The months with the highest relative humidity are October and December (87%).
The months with the lowest relative humidity are February, March and April (84%).
Average rainfall
Scilly, Ireland
The wettest month (with the highest rainfall) is December (66mm).
The driest month (with the least rainfall) is March (33mm).
Average rainfall days
Scilly, Ireland
- Average rainfall days in January:
15.7 days - Average rainfall days in February:
13.5 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
17.6 days
- Average rainfall days in July:
21.3 days - Average rainfall days in August:
21.1 days - Average rainfall days in September:
15.3 days - Average rainfall days in October:
16.6 days - Average rainfall days in November:
14.9 days - Average rainfall days in December:
16.3 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is February (13.5 days).
Average snowfall
Scilly, Ireland
The month with the highest snowfall is March (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Scilly, Ireland
- Average snowfall days in January:
0.8 days - Average snowfall days in February:
1.2 days - Average snowfall days in March:
0.9 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.5 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Scilly, Ireland
- Average daylight in January:
8h and 2min - 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 4min - Average daylight in June:
16h and 4min
- Average daylight in July:
16h and 1min - 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 5min - Average daylight in December:
7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 1min - Average sunshine in May:
7h and 1min - Average sunshine in June:
7h and 2min
- Average sunshine in July:
6h and 5min - Average sunshine in August:
7h and 1min - Average sunshine in September:
6h and 2min - Average sunshine in October:
4h and 3min - Average sunshine in November:
4h and 2min - Average sunshine in December:
4h and 1min
The month with the most sunshine is June (Average sunshine: 7h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Scilly, Ireland
- Average sunshine days in January:
13 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
12.4 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
6.8 days - Average sunshine days in August:
5.8 days - Average sunshine days in September:
10.5 days - Average sunshine days in October:
10.2 days - Average sunshine days in November:
12.9 days - Average sunshine days in December:
12.8 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is August (5.8 days).
Average UV index
Scilly, Ireland
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Scilly, Ireland
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 52).
Average visibility
Scilly, Ireland
The months with the highest visibility are February and March (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October, November and December (9km).
