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 brings a slight increase in the average high-temperature, progressing from a refreshing 18.5°C (65.3°F) in April to a moderately hot 23.1°C (73.6°F). In May, Alcains records an average nighttime temperature of 11.3°C (52.3°F).Humidity
In May, the average relative humidity is 63%.Rainfall
In Alcains, in May, during 7.9 rainfall days, 21mm (0.83") of precipitation is typically accumulated. In Alcains, during the entire year, the rain falls for 97.2 days and collects up to 371mm (14.61") of precipitation.Snowfall
In Alcains, snow does not fall in February through December.Daylight
In May, the average length of the day is 14h and 23min.On the first day of the month, sunrise is at 06:29 and sunset at 20:24. On the last day of May, sunrise is at 06:03 and sunset at 20:51 WEST.
Sunshine
The average sunshine in May is 10.2h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 6 in May translates into these instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Alcains in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Alcains have in May?
What are the months with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Alcains, Portugal
- Average high temperature in May: 23.1°C
The warmest month (with the highest average high temperature) is August (32.8°C).
The month with the lowest average high temperature is January (11.6°C).
- Average low temperature in May: 11.3°C
The month with the highest average low temperature is July (17.2°C).
The coldest month (with the lowest average low temperature) is January (3.9°C).
Average pressure in May
Alcains, Portugal
- Average pressure in May: 1015.9mbar
The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in May
Alcains, Portugal
- Average wind speed in May: 9.9km/h
The windiest month (with the highest average wind speed) is February (11.3km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).
Average humidity in May
Alcains, Portugal
- Average humidity in May: 63%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (44%).
Average rainfall in May
Alcains, Portugal
- Average rainfall in May: 21mm
The wettest month (with the highest rainfall) is November (60mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in May
Alcains, Portugal
- Average rainfall days in May: 7.9 days
The month with the highest number of rainy days is November (12.3 days).
The month with the least rainy days is August (1.5 days).
Average snowfall in May
Alcains, Portugal
- Average snowfall in May: 0mm
The month with the highest snowfall is January (1mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in May
Alcains, Portugal
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and March (0.1 days).
The months with the least snowfall days are February, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Alcains, Portugal
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 10h and 1min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in May
Alcains, Portugal
- Average sunshine days in May: 20.5 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is April (16.6 days).
Average UV index in May
Alcains, Portugal
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Alcains, Portugal
- Average cloud cover in May: 26
The month with the most cloud cover is January (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in May
Alcains, Portugal
- Average visibility in May: 9km
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).
