April weather forecastStromness, United Kingdom
April
Weather in April
April, like March, is a frosty spring month in Stromness, United Kingdom, with an average temperature ranging between max 8.3°C (46.9°F) and min 6.6°C (43.9°F).Temperature
With the onset of April, a modest change to a still frosty 8.3°C (46.9°F) from March's 7.5°C (45.5°F) is noted in high-temperature. Stromness's average low temperature, barely cooler than the daytime high, steadies at a still frosty 6.6°C (43.9°F) during April.Humidity
In April, the average relative humidity is 79%.Rainfall
The month with the least rainfall is April, when the rain falls for 17.2 days and typically collects 30mm (1.18") of precipitation.Snowfall
Months with snowfall in Stromness are January through April, November and December. April is the last month it regularly snows in Stromness. During 0.5 snowfall days, in April, Stromness aggregates 3mm (0.12") of snow. In Stromness, during the entire year, snow falls for 4.8 days and aggregates up to 23mm (0.91") of snow.Sea temperature
In Stromness, in April, the average water temperature is 8.1°C (46.6°F).Note: With an efficient thermal swimsuit, one can navigate 8.1°C (46.6°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 13°C (55.4°F) feels chilly.
Daylight
In Stromness, the average length of the day in April is 14h and 31min.On the first day of April, sunrise is at 6:37 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 9:03 pm BST.
Sunshine
In April, the average sunshine is 6.8h.UV index
In Stromness, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In April, the UV index of 3 transforms into the following advice:
Take necessary precautions - Defending against sun damage is advocated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Stromness, United Kingdom
- Average high temperature in April: 8.3°C
The warmest month (with the highest average high temperature) is August (14.2°C).
The month with the lowest average high temperature is February (7°C).
- Average low temperature in April: 6.6°C
The month with the highest average low temperature is August (12.4°C).
The coldest month (with the lowest average low temperature) is February (5.5°C).
Average pressure in April
Stromness, United Kingdom
- Average pressure in April: 1013.5mbar
The months with the highest atmospheric pressure are May and June (1014.4mbar).
The month with the lowest atmospheric pressure is December (1003.7mbar).
Average wind speed in April
Stromness, United Kingdom
- Average wind speed in April: 27.9km/h
The windiest month (with the highest average wind speed) is January (38.7km/h).
The calmest months (with the lowest average wind speed) are June and July (22.5km/h).
Average humidity in April
Stromness, United Kingdom
- Average humidity in April: 79%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January and December (75%).
Average rainfall in April
Stromness, United Kingdom
- Average rainfall in April: 30mm
The wettest months (with the highest rainfall) are January and December (60mm).
The driest month (with the least rainfall) is April (30mm).
Average rainfall days in April
Stromness, United Kingdom
- Average rainfall days in April: 17.2 days
The month with the highest number of rainy days is December (23.5 days).
The month with the least rainy days is June (15.5 days).
Average snowfall in April
Stromness, United Kingdom
- Average snowfall in April: 3mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in April
Stromness, United Kingdom
- Average snowfall days in April: 0.5 days
The months with the highest number of snowfall days are February and March (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in April
Stromness, United Kingdom
- Average sea temperature in April: 8.1°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 (7.3°C).
Average daylight in April /
Average sunshine in April
Stromness, United Kingdom
- Average daylight in April: 14h and 30min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in April: 6h and 48min
The month with the most sunshine is June (Average sunshine: 8h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in April
Stromness, United Kingdom
- Average sunshine days in April: 9.5 days
The month with the most sunshine days is May (11.4 days).
The month with the least sunshine days is December (4.8 days).
Average UV index in April
Stromness, United Kingdom
- Average UV index in April: 3
The months with the highest UV index are June, July and September (UV index 4).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in April
Stromness, United Kingdom
- Average cloud cover in April: 56
The months with the most cloud cover are January and March (Cloud cover 67).
The months with the least cloud cover are April and May (Cloud cover 56).
Average visibility in April
Stromness, United Kingdom
- Average visibility in April: 10km
The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and March (9km).
