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
Weather in May
Temperature
Rio Maior's transition into May sees a mild rise in the average high-temperature, edging from a comfortable 17.8°C (64°F) in April to an agreeable 20.8°C (69.4°F). During May, Rio Maior's temperature falls to a steady low-temperature average of 13.5°C (56.3°F).Humidity
The average relative humidity in May in Rio Maior is 74%.Rainfall
In Rio Maior, in May, during 8.6 rainfall days, 13mm (0.51") of precipitation is typically accumulated. Throughout the year, in Rio Maior, Portugal, there are 101.5 rainfall days, and 168mm (6.61") of precipitation is accumulated.Daylight
In Rio Maior, the average length of the day in May is 14h and 21min.On the first day of the month, sunrise is at 06:36 and sunset at 20:29. On the last day of May, sunrise is at 06:11 and sunset at 20:56 WEST.
Sunshine
The average sunshine in May in Rio Maior is 10.2h.UV index
In Rio Maior, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the usual temperature for Rio Maior in May?
What is the average humidity in May in Rio Maior?
How many days does it rain in May in Rio Maior?
How many hours of daylight does Rio Maior have in May?
When is the sunrise / sunset in May in Rio Maior?
How long on average sun shines in May in Rio Maior?
What is the UV index reading in May in Rio Maior?
Average temperature in May
Rio Maior, Portugal
- Average high temperature in May: 20.8°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).
- Average low temperature in May: 13.5°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure in May
Rio Maior, Portugal
- Average pressure in May: 1016.4mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in May
Rio Maior, Portugal
- Average wind speed in May: 16km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.5km/h).
Average humidity in May
Rio Maior, Portugal
- Average humidity in May: 74%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in May
Rio Maior, Portugal
- Average rainfall in May: 13mm
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in May
Rio Maior, Portugal
- Average rainfall days in May: 8.6 days
The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).
Average daylight in May /
Average sunshine in May
Rio Maior, Portugal
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in May
Rio Maior, Portugal
- Average sunshine days in May: 20.3 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in May
Rio Maior, Portugal
- Average UV index in May: 5
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in May
Rio Maior, Portugal
- Average cloud cover in May: 28
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 20).
Average visibility in May
Rio Maior, Portugal
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
Rio Maior, Portugal
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