Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
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. Stornoway marks an average drop to a still chilly 7°C (44.6°F) during nighttime in April, following the high of the day.Humidity
The average relative humidity in April is 78%.Rainfall
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.Snowfall
January through May, November and December are months with snowfall. In April, in Stornoway, it is snowing for 0.5 days. Throughout April, 3mm (0.12") of snow is accumulated. In Stornoway, during the entire year, snow falls for 7.1 days and aggregates up to 74mm (2.91") of snow.Sea temperature
In April, the average sea temperature in Stornoway is 8.3°C (46.9°F).Note: You can swim in 8.3°C (46.9°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 13°C (55.4°F) without it is tough.
Daylight
The average length of the day in April is 14h and 26min.On the first day of April in Stornoway, sunrise is at 6:51 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 9:12 pm BST.
Sunshine
In April, the average sunshine is 6.8h.UV index
In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What is the usual temperature for Stornoway in April?
What is the average humidity in April in Stornoway?
What is the driest month in Stornoway?
How many days does it rain in April in Stornoway?
How many days does it snow in April in Stornoway?
What is the water temperature in April in Stornoway?
How many hours of daylight does Stornoway have in April?
When are sunrise and sunset in April in Stornoway?
How long on average sun shines in April in Stornoway?
What is the UV index reading in April in Stornoway?
Average temperature in April
Stornoway, United Kingdom
- Average high temperature in April: 9.4°C
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).
- Average low temperature in April: 7°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 in April
Stornoway, United Kingdom
- Average pressure in April: 1013.1mbar
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 in April
Stornoway, United Kingdom
- Average wind speed in April: 25.1km/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 in April
Stornoway, United Kingdom
- Average humidity in April: 78%
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 in April
Stornoway, United Kingdom
- Average rainfall in April: 43mm
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 in April
Stornoway, United Kingdom
- Average rainfall days in April: 18.5 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 in April
Stornoway, United Kingdom
- Average snowfall in April: 3mm
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 in April
Stornoway, United Kingdom
- Average snowfall days in April: 0.5 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 in April
Stornoway, United Kingdom
- Average sea temperature in April: 8.3°C
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 in April /
Average sunshine in April
Stornoway, United Kingdom
- Average daylight in April: 14h and 2min
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 April: 6h and 5min
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 in April
Stornoway, United Kingdom
- Average sunshine days in April: 7.7 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 in April
Stornoway, United Kingdom
- Average UV index in April: 3
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 in April
Stornoway, United Kingdom
- Average cloud cover in April: 57
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 in April
Stornoway, United Kingdom
- Average visibility in April: 10km
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).
Stornoway, United Kingdom
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