Climate and monthly weather forecastStornoway, United Kingdom
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Stornoway, United Kingdom, with an average temperature ranging between max 7.7°C (45.9°F) and min 5.7°C (42.3°F). The transition from December to January sees an average high-temperature of a still chilly 7.7°C (45.9°F), indicating a minor variance from the prior month. Weather in January »Weather in February
The last month of the winter, February, is also a frosty month in Stornoway, United Kingdom, with an average temperature fluctuating between 5.6°C (42.1°F) and 7.4°C (45.3°F). February is the coldest month, with the temperature often reaching an average high of 7.4°C (45.3°F) and an average low of 5.6°C (42.1°F). Weather in February »Weather in March
March, the first month of the spring in Stornoway, is still a chilly month, with an average temperature varying between 5.9°C (42.6°F) and 8°C (46.4°F). As March unfolds, the average high-temperature reaches a still chilly 8°C (46.4°F), hinting at a slight fluctuation from the previous month. Weather in March »Weather in April
April, like March, is another chilly spring month in Stornoway, United Kingdom, with an average temperature fluctuating between 7°C (44.6°F) and 9.4°C (48.9°F). Stornoway's April average high-temperature settles at a still frosty 9.4°C (48.9°F), showing a near match with the preceding month. Weather in April »Weather in May
May, the last month of the spring in Stornoway, is a cool month, with an average temperature ranging between min 8.4°C (47.1°F) and max 10.8°C (51.4°F). The initiation of May records an average high-temperature of a fresh 10.8°C (51.4°F), displaying a near consistency with the previous month. Weather in May »Weather in June
The first month of the summer, June, is still a cool month in Stornoway, United Kingdom, with temperature in the range of an average high of 12.9°C (55.2°F) and an average low of 10.5°C (50.9°F). June reports an average high-temperature of a still fresh 12.9°C (55.2°F), slightly varied from May's 10.8°C (51.4°F). Weather in June »Weather in July
July in Stornoway, United Kingdom, is a mild summer month, with temperature in the range of an average high of 14.5°C (58.1°F) and an average low of 12.1°C (53.8°F). July welcomes an average high-temperature of a mild 14.5°C (58.1°F), not much different from the preceding month. Weather in July »Weather in August
The last month of the summer, August, is also a moderate month in Stornoway, United Kingdom, with temperature in the range of an average low of 12.6°C (54.7°F) and an average high of 14.8°C (58.6°F). August temperatures tend to peak at an average high of 14.8°C (58.6°F) and dip to a low of 12.6°C (54.7°F). Weather in August »Weather in September
September, the first month of the autumn in Stornoway, is still a mild month, with an average temperature ranging between min 11.8°C (53.2°F) and max 13.7°C (56.7°F). Stornoway, United Kingdom, starts September with an average high-temperature of a still mild 13.7°C (56.7°F), hinting at a minimal fluctuation from August. Weather in September »Weather in October
October, the same as September, is a cool autumn month in Stornoway, United Kingdom, with an average temperature fluctuating between 11.7°C (53.1°F) and 10°C (50°F). The initiation of October sees an average high-temperature of a fresh 11.7°C (53.1°F), showing minor variations from the previous month. Weather in October »Weather in November
November, the last month of the autumn in Stornoway, is also a frosty month, with an average temperature varying between 9.5°C (49.1°F) and 7.8°C (46°F). As Stornoway, United Kingdom, transitions from October to November, the average high-temperatures adjust to a chilly 9.5°C (49.1°F), nearly the same as the previous 11.7°C (53.1°F). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Stornoway, United Kingdom, with an average temperature ranging between max 8.3°C (46.9°F) and min 6.2°C (43.2°F). At the start of December, Stornoway's average high-temperature reaches a still frosty 8.3°C (46.9°F), subtly different from the preceding month. Weather in December »Updated: Feb 8, 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
The months with the lowest humidity in Stornoway, United Kingdom, are January, November and December, with an average relative humidity of 76%.
In Stornoway, United Kingdom, during the entire year, the rain falls for 258.9 days and collects up to 808mm (31.81") of precipitation.
Months with snowfall are January through May, November and December.
In Stornoway, during the entire year, snow falls for 7.1 days and aggregates up to 74mm (2.91") of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the coldest month of the year in Stornoway, registering average temperatures as high as 7.4°C (45.3°F) and as low as 5.6°C (42.1°F).
The month with the most snowfall in Stornoway, United Kingdom, is February, when snow falls for 1.9 days and typically aggregates up to 30mm (1.18") of snow.
The month with the coldest seawater in Stornoway, United Kingdom, is March, with an average sea temperature of 7.6°C (45.7°F).
The months with the least rainfall in Stornoway are April and June Rain falls for 18.5 days and accumulates 43mm (1.69") of rain.
The months with the highest UV index are May through July and September, with an average maximum UV index of 4.
In Stornoway, United Kingdom, snow does not fall in June through October.
The month with the longest days is June, with an average of 18h and 6min of daylight.
June has the most sunshine of the year in Stornoway, United Kingdom, with an average of 7.9h of sunshine.
July is the most humid month in Stornoway, United Kingdom, with an average relative humidity of 84%.
Stornoway's warmest weather arrives in August, when temperatures average a high of 14.8°C (58.6°F) and a low of 12.6°C (54.7°F).
With an average sea temperature of 13.3°C (55.9°F), August is the month with the warmest seawater.
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Stornoway, 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.
December is the month with the most rainfall. Rain falls for 25 days and accumulates 92mm (3.62") of precipitation.
The month with the shortest days is December, with an average of 6h and 30min of daylight.
With an average of 2.7h of sunshine, December has the least sunshine of the year.
Average temperature
Stornoway, United Kingdom
The warmest month (with the highest average high temperature) is August (14.8°C).
The month with the lowest average high temperature is February (7.4°C).
The month with the highest average low temperature is August (12.6°C).
The coldest month (with the lowest average low temperature) is February (5.6°C).
Average pressure
Stornoway, United Kingdom
- Average pressure in January:
1004.9mbar - Average pressure in February:
1005.7mbar - Average pressure in March:
1009.7mbar - Average pressure in April:
1013.1mbar - Average pressure in May:
1014.1mbar - Average pressure in June:
1014.2mbar
- Average pressure in July:
1011.3mbar - Average pressure in August:
1009.4mbar - Average pressure in September:
1010.5mbar - Average pressure in October:
1008.8mbar - Average pressure in November:
1004.4mbar - Average pressure in December:
1003.9mbar
The month with the highest atmospheric pressure is June (1014.2mbar).
The month with the lowest atmospheric pressure is December (1003.9mbar).
Average wind speed
Stornoway, United Kingdom
- Average wind speed in January:
35.6km/h - Average wind speed in February:
32.7km/h - Average wind speed in March:
31km/h - Average wind speed in April:
25.1km/h - Average wind speed in May:
23.6km/h - Average wind speed in June:
20.6km/h
- Average wind speed in July:
20.5km/h - Average wind speed in August:
22.5km/h - Average wind speed in September:
27.1km/h - Average wind speed in October:
29.2km/h - Average wind speed in November:
31.7km/h - Average wind speed in December:
34.5km/h
The windiest month (with the highest average wind speed) is January (35.6km/h).
The calmest month (with the lowest average wind speed) is July (20.5km/h).
Average humidity
Stornoway, United Kingdom
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, November and December (76%).
Average rainfall
Stornoway, United Kingdom
The wettest month (with the highest rainfall) is December (92mm).
The driest months (with the least rainfall) are April and June (43mm).
Average rainfall days
Stornoway, United Kingdom
- Average rainfall days in January:
24.8 days - Average rainfall days in February:
21.2 days - Average rainfall days in March:
21.8 days - Average rainfall days in April:
18.5 days - Average rainfall days in May:
19.7 days - Average rainfall days in June:
16.6 days
- Average rainfall days in July:
20.2 days - Average rainfall days in August:
23.3 days - Average rainfall days in September:
21.5 days - Average rainfall days in October:
23.2 days - Average rainfall days in November:
23.1 days - Average rainfall days in December:
25 days
The month with the highest number of rainy days is December (25 days).
The month with the least rainy days is June (16.6 days).
Average snowfall
Stornoway, United Kingdom
The month with the highest snowfall is February (30mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days
Stornoway, United Kingdom
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
1.9 days - Average snowfall days in March:
1.2 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0.3 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:
0.3 days - Average snowfall days in December:
1.4 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature
Stornoway, United Kingdom
The best month for swimming (with the highest average sea temperature) is August (13.3°C).
The coldest month (with the lowest average sea temperature) is March (7.6°C).
Average daylight / Average sunshine
Stornoway, United Kingdom
- Average daylight in January:
7h and 18min - Average daylight in February:
9h and 24min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 24min - Average daylight in May:
16h and 48min - Average daylight in June:
18h and 6min
- Average daylight in July:
17h and 24min - Average daylight in August:
15h and 18min - Average daylight in September:
12h and 48min - Average daylight in October:
10h and 18min - Average daylight in November:
7h and 54min - Average daylight in December:
6h and 30min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in January:
2h and 48min - Average sunshine in February:
3h and 36min - Average sunshine in March:
4h and 30min - Average sunshine in April:
6h and 48min - Average sunshine in May:
7h and 18min - Average sunshine in June:
7h and 54min
- Average sunshine in July:
7h and 18min - Average sunshine in August:
6h and 36min - Average sunshine in September:
5h and 36min - Average sunshine in October:
3h and 54min - Average sunshine in November:
3h and 54min - Average sunshine in December:
2h and 42min
The month with the most sunshine is June (Average sunshine: 7h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 42min).
Average sunshine days
Stornoway, United Kingdom
- Average sunshine days in January:
3.6 days - Average sunshine days in February:
4.3 days - Average sunshine days in March:
5.5 days - Average sunshine days in April:
7.7 days - Average sunshine days in May:
8.5 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
7.4 days - Average sunshine days in August:
5.5 days - Average sunshine days in September:
5.8 days - Average sunshine days in October:
5.5 days - Average sunshine days in November:
4.7 days - Average sunshine days in December:
3.2 days
The month with the most sunshine days is June (10.8 days).
The month with the least sunshine days is December (3.2 days).
Average UV index
Stornoway, United Kingdom
The months with the highest UV index are May, June, July and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Stornoway, United Kingdom
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are April and May (Cloud cover 57).
Average visibility
Stornoway, United Kingdom
The months with the highest visibility are April and June (10km).
The months with the lowest visibility are January, February, March, May, July, August, September, October, November and December (9km).
