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
Weather in May
Temperature
The shift into May is marked by a modest rise in the average high-temperature, moving from April's comfortable 17°C (62.6°F) to an agreeable 21.2°C (70.2°F). Viseu's May nights see a large temperature deviation, with temperatures resting at a low of 9°C (48.2°F).Humidity
In May, the average relative humidity in Viseu, Portugal, is 71%.Rainfall
In Viseu, in May, it is raining for 10.9 days, with typically 31mm (1.22") of accumulated precipitation. In Viseu, during the entire year, the rain falls for 125.4 days and collects up to 553mm (21.77") of precipitation.Snowfall
In Viseu, snow does not fall in April through October and December.Daylight
The average length of the day in May in Viseu is 14h and 28min.On the first day of the month, sunrise is at 06:29 and sunset at 20:27. On the last day of May, in Viseu, sunrise is at 06:02 and sunset at 20:55 WEST.
Sunshine
In Viseu, the average sunshine in May is 9.6h.UV index
In Viseu, Portugal, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What are May temperatures in Viseu?
What is the average humidity in May in Viseu?
How much does it rain in Viseu in May?
When it does not snow in Viseu?
What is the average length of the day in May in Viseu?
When is the sunrise / sunset in May in Viseu?
How many hours of sunshine does Viseu have in May?
What is the UV index intensity in May in Viseu?
Average temperature in May
Viseu, Portugal
- Average high temperature in May: 21.2°C
The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (10.7°C).
- Average low temperature in May: 9°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (3.1°C).
Average pressure in May
Viseu, Portugal
- Average pressure in May: 1016.2mbar
The month with the highest atmospheric pressure is December (1022.9mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in May
Viseu, Portugal
- Average wind speed in May: 8.1km/h
The windiest month (with the highest average wind speed) is March (9.1km/h).
The calmest month (with the lowest average wind speed) is September (7km/h).
Average humidity in May
Viseu, Portugal
- Average humidity in May: 71%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (57%).
Average rainfall in May
Viseu, Portugal
- Average rainfall in May: 31mm
The wettest month (with the highest rainfall) is December (92mm).
The driest month (with the least rainfall) is July (6mm).
Average rainfall days in May
Viseu, Portugal
- Average rainfall days in May: 10.9 days
The month with the highest number of rainy days is November (15.5 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in May
Viseu, Portugal
- Average snowfall in May: 0mm
The months with the highest snowfall are January and February (3mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days in May
Viseu, Portugal
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Viseu, Portugal
- Average daylight in May: 14h and 3min
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 18min).
- Average sunshine in May: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in May
Viseu, Portugal
- Average sunshine days in May: 18.3 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is April (13 days).
Average UV index in May
Viseu, 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 January, February, November and December (UV index 2).
Average cloud cover in May
Viseu, Portugal
- Average cloud cover in May: 36
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in May
Viseu, Portugal
- Average visibility in May: 8km
The months with the highest visibility are June, July, August and September (9km).
The months with the lowest visibility are January and November (7km).
Viseu, Portugal
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