May weather forecastStromness, United Kingdom
May
Weather in May
The last month of the spring, May, is also a frosty month in Stromness, United Kingdom, with an average temperature fluctuating between 8°C (46.4°F) and 9.8°C (49.6°F).Temperature
The commencement of May introduces an average high-temperature of a still frosty 9.8°C (49.6°F), closely mirroring the preceding month. The temperature in Stromness during May nights demonstrates a small drop from the daytime highs, settling to an average of 8°C (46.4°F).Humidity
In Stromness, the average relative humidity in May is 81%.Rainfall
In Stromness, in May, during 17.3 rainfall days, 41mm (1.61") of precipitation is typically accumulated. In Stromness, United Kingdom, during the entire year, the rain falls for 233.4 days and collects up to 572mm (22.52") of precipitation.Snowfall
May through October are months without snowfall in Stromness.Sea temperature
In May, the average sea temperature is 9.3°C (48.7°F).Note: It is life-risking to swim in 9.3°C (48.7°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
The average length of the day in May is 16h and 57min.On the first day of the month, sunrise is at 5:14 am and sunset at 9:06 pm. On the last day of May, sunrise is at 4:12 am and sunset at 10:09 pm BST.
Sunshine
In Stromness, United Kingdom, the average sunshine in May is 7.3h.UV index
In Stromness, the average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, a daily UV index of 3 turns into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Stromness, United Kingdom
- Average high temperature in May: 9.8°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 May: 8°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 May
Stromness, United Kingdom
- Average pressure in May: 1014.4mbar
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 May
Stromness, United Kingdom
- Average wind speed in May: 24.6km/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 May
Stromness, United Kingdom
- Average humidity in May: 81%
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 May
Stromness, United Kingdom
- Average rainfall in May: 41mm
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 May
Stromness, United Kingdom
- Average rainfall days in May: 17.3 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 May
Stromness, United Kingdom
- Average snowfall in May: 0mm
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 May
Stromness, United Kingdom
- Average snowfall days in May: 0 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 May
Stromness, United Kingdom
- Average sea temperature in May: 9.3°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 (7.3°C).
Average daylight in May /
Average sunshine in May
Stromness, United Kingdom
- Average daylight in May: 17h and 0min
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 May: 7h and 18min
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 May
Stromness, United Kingdom
- Average sunshine days in May: 11.4 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 May
Stromness, United Kingdom
- Average UV index in May: 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 May
Stromness, United Kingdom
- Average cloud cover in May: 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 May
Stromness, United Kingdom
- Average visibility in May: 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).
