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 snowfall in May
- Average snowfall 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
May's onset brings a subtle temperature rise, moving from a moderate 15.5°C (59.9°F) in April to a still refreshing 19.6°C (67.3°F). Nighttime temperatures in May average to a frosty 8°C (46.4°F).Humidity
In May, the average relative humidity in Arcas is 69%.Rainfall
In May, in Arcas, the rain falls for 14.3 days. Throughout May, 42mm (1.65") of precipitation is accumulated. Throughout the year, there are 141.7 rainfall days, and 532mm (20.94") of precipitation is accumulated.Snowfall
In Arcas, snow does not fall in April through October.Daylight
In Arcas, the average length of the day in May is 14h and 32min.On the first day of the month, sunrise is at 06:23 and sunset at 20:26. On the last day of May, sunrise is at 05:56 and sunset at 20:55 WEST.
Sunshine
In May, the average sunshine in Arcas is 10.1h.UV index
The average daily maximum UV index in May in Arcas is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. 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
What is the temperature in May in Arcas?
What is the average humidity in May in Arcas?
How many days does it rain in May in Arcas?
When it does not snow in Arcas?
How many hours of daylight does Arcas have in May?
What time are sunrise and sunset in May in Arcas?
How long on average sun shines in May in Arcas?
How high is the UV index in May in Arcas?
Average temperature in May
Arcas, Portugal
- Average high temperature in May: 19.6°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in May: 8°C
The month with the highest average low temperature is July (13.8°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).
Average pressure in May
Arcas, Portugal
- Average pressure in May: 1016.7mbar
The month with the highest atmospheric pressure is December (1022.9mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in May
Arcas, Portugal
- Average wind speed in May: 9.4km/h
The windiest month (with the highest average wind speed) is March (11.2km/h).
The calmest month (with the lowest average wind speed) is September (8.4km/h).
Average humidity in May
Arcas, Portugal
- Average humidity in May: 69%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (52%).
Average rainfall in May
Arcas, Portugal
- Average rainfall in May: 42mm
The wettest month (with the highest rainfall) is November (73mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in May
Arcas, Portugal
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is April (17.6 days).
The month with the least rainy days is August (4.2 days).
Average snowfall in May
Arcas, Portugal
- Average snowfall in May: 0mm
The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Arcas, Portugal
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Arcas, Portugal
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in May
Arcas, Portugal
- Average sunshine days in May: 14.4 days
The month with the most sunshine days is August (24.5 days).
The month with the least sunshine days is April (10.8 days).
Average UV index in May
Arcas, Portugal
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Arcas, Portugal
- Average cloud cover in May: 32
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in May
Arcas, Portugal
- Average visibility in May: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, November and December (8km).
