Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
With the start of May, the average high-temperature marginally shifts from April's comfortable 18.6°C (65.5°F) to a pleasant 21.8°C (71.2°F). The average low-temperature of 14.8°C (58.6°F) is witnessed in Arialva during May.Humidity
In May, the average relative humidity in Arialva is 69%.Rainfall
In Arialva, during May, the rain falls for 3.8 days and regularly aggregates up to 5mm (0.2") of precipitation. In Arialva, during the entire year, the rain falls for 54.2 days and collects up to 61mm (2.4") of precipitation.Daylight
In Arialva, the average length of the day in May is 14h and 17min.On the first day of the month, sunrise is at 06:38 and sunset at 20:29. On the last day of May, in Arialva, sunrise is at 06:13 and sunset at 20:55 WEST.
Sunshine
In May, the average sunshine in Arialva is 10.6h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 6 in May translates into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Arialva?
What is the average humidity in May in Arialva?
How many days does it rain in May in Arialva?
What is the average length of the day in May in Arialva?
When is the sunrise / sunset in May in Arialva?
How many hours of sunshine does Arialva have in May?
What is the month with the highest UV index in Arialva?
What is the UV index intensity in May in Arialva?
Average temperature in May
Arialva, Portugal
- Average high temperature in May: 21.8°C
The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in May: 14.8°C
The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is February (9.8°C).
Average pressure in May
Arialva, Portugal
- Average pressure in May: 1016.5mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in May
Arialva, Portugal
- Average wind speed in May: 15.4km/h
The windiest month (with the highest average wind speed) is February (16.5km/h).
The calmest month (with the lowest average wind speed) is September (13.1km/h).
Average humidity in May
Arialva, Portugal
- Average humidity in May: 69%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (68%).
Average rainfall in May
Arialva, Portugal
- Average rainfall in May: 5mm
The wettest month (with the highest rainfall) is November (15mm).
The driest months (with the least rainfall) are June, July and August (1mm).
Average rainfall days in May
Arialva, Portugal
- Average rainfall days in May: 3.8 days
The month with the highest number of rainy days is November (9.3 days).
The month with the least rainy days is August (0.8 days).
Average daylight in May /
Average sunshine in May
Arialva, Portugal
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in May
Arialva, Portugal
- Average sunshine days in May: 24.7 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is November (17.7 days).
Average UV index in May
Arialva, Portugal
- Average UV index in May: 6
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in May
Arialva, Portugal
- Average cloud cover in May: 24
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Arialva, Portugal
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
