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
May's arrival brings an average high-temperature of a still enjoyable 17.1°C (62.8°F), slightly deviating from April's 16°C (60.8°F). In Altares, May's low temperatures hover around a still comfortable 16°C (60.8°F), reflecting a minor decrease from the daytime highs.Humidity
The average relative humidity in May is 81%.Rainfall
In Altares, during May, the rain falls for 13.7 days and regularly aggregates up to 44mm (1.73") of precipitation. In Altares, during the entire year, the rain falls for 178 days and collects up to 543mm (21.38") of precipitation.Daylight
In May, the average length of the day in Altares is 14h and 18min.On the first day of the month, sunrise is at 06:50 and sunset at 20:41. On the last day of May, sunrise is at 06:26 and sunset at 21:07 +00.
Sunshine
In May, the average sunshine is 8.2h.UV index
The average daily maximum UV index in May in Altares is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the UV index of 5 transforms into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. 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 average May temperature in Altares?
What is the average humidity in May in Altares?
How many days does it rain in May in Altares?
What is the average length of the day in May in Altares?
When is the sunrise / sunset in May in Altares?
How many hours of sunshine does Altares have in May?
What is the UV index intensity in May in Altares?
Average temperature in May
Altares, Portugal
- Average high temperature in May: 17.1°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is March (15.6°C).
- Average low temperature in May: 16°C
The month with the highest average low temperature is August (21.6°C).
The coldest months (with the lowest average low temperature) are February and March (14.3°C).
Average pressure in May
Altares, Portugal
- Average pressure in May: 1021.1mbar
The month with the highest atmospheric pressure is July (1024.4mbar).
The month with the lowest atmospheric pressure is October (1016.7mbar).
Average wind speed in May
Altares, Portugal
- Average wind speed in May: 23km/h
The windiest month (with the highest average wind speed) is December (29.6km/h).
The calmest month (with the lowest average wind speed) is July (16.4km/h).
Average humidity in May
Altares, Portugal
- Average humidity in May: 81%
The month with the highest relative humidity is June (83%).
The months with the lowest relative humidity are September, October and November (78%).
Average rainfall in May
Altares, Portugal
- Average rainfall in May: 44mm
The wettest month (with the highest rainfall) is December (91mm).
The driest month (with the least rainfall) is July (15mm).
Average rainfall days in May
Altares, Portugal
- Average rainfall days in May: 13.7 days
The month with the highest number of rainy days is October (19.9 days).
The month with the least rainy days is July (9.6 days).
Average daylight in May /
Average sunshine in May
Altares, 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: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is November (Average sunshine: 5h and 0min).
Average sunshine days in May
Altares, Portugal
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is July (16.3 days).
The month with the least sunshine days is October (6.3 days).
Average UV index in May
Altares, Portugal
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are February, March, April and December (UV index 4).
Average cloud cover in May
Altares, Portugal
- Average cloud cover in May: 49
The month with the most cloud cover is November (Cloud cover 52).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in May
Altares, 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).
