May weather forecast and climate
Rolão, Portugal

Weather in May

The last month of the spring, May, is a moderately hot month in Rolão, Portugal, with temperature in the range of an average low of 12.8°C (55°F) and an average high of 25.9°C (78.6°F).

Temperature

In Rolão, the average high-temperature increases, from an agreeable 20.7°C (69.3°F) in April, to a warm 25.9°C (78.6°F). The average low-temperature, is 12.8°C (55°F).

Humidity

In Rolão, the average relative humidity is 61%.

Rainfall

In Rolão, during 5.1 rainfall days, 11mm (0.43") of precipitation is typically accumulated. In Rolão, during the entire year, the rain falls for 65.2 days and collects up to 110mm (4.33") of precipitation.

Daylight

In Rolão, the average length of the day in May is 14.2h.

Sunshine

In May, the average sunshine in Rolão is 10.2h.

UV index

In May, the average daily maximum UV index in Rolão is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in May in Rolão?

In Rolão, Portugal, in May, the average high-temperature is 25.9°C (78.6°F), and the average low-temperature is 12.8°C (55°F).

What is the average humidity in May in Rolão?

In May, the average relative humidity is 61%.

How much does it rain in Rolão in May?

In Rolão, in May, it is raining for 5.1 days, with typically 11mm (0.43") of accumulated precipitation.

How many hours of daylight does Rolão have in May?

The average length of the day in May in Rolão is 14.2h.

How many hours of sunshine does Rolão have in May?

In Rolão, Portugal, the average sunshine in May is 10.2h.

What is the UV index reading in May in Rolão?

In Rolão, Portugal, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.

Average temperature in May
Rolão, Portugal

Average temperature in May - Rolão, Portugal
  • Average high temperature in May: 25.9°C

The warmest month (with the highest average high temperature) is August (34.7°C).
The month with the lowest average high temperature is January (14.4°C).

  • Average low temperature in May: 12.8°C

The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).

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Average pressure in May
Rolão, Portugal

Average pressure in May - Rolão, Portugal
  • Average pressure in May: 1015.9mbar

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

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Average wind speed in May
Rolão, Portugal

Average wind speed in May - Rolão, Portugal
  • Average wind speed in May: 11.3km/h

The windiest month (with the highest average wind speed) is July (11.9km/h).
The calmest month (with the lowest average wind speed) is September (9.7km/h).

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Average humidity in May
Rolão, Portugal

Average humidity in May - Rolão, Portugal
  • Average humidity in May: 61%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in May
Rolão, Portugal

Average rainfall in May - Rolão, Portugal
  • Average rainfall in May: 11mm

The wettest month (with the highest rainfall) is April (20mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in May
Rolão, Portugal

Average rainfall days in May - Rolão, Portugal
  • Average rainfall days in May: 5.1 days

The month with the highest number of rainy days is April (9.7 days).
The month with the least rainy days is August (1 days).

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Average daylight in May /
Average sunshine in May
Rolão, Portugal

Average daylight in May / Average sunshine in May - Rolão, Portugal
  • Average daylight in May: 14.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in May: 10.2h

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is January (Average sunshine: 5.4h).

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Average sunshine days in May
Rolão, Portugal

Average sunshine days in May - Rolão, Portugal
  • Average sunshine days in May: 23.9 days

The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is April (18.8 days).

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Average UV index in May
Rolão, Portugal

Average UV index in May - Rolão, Portugal
  • Average UV index in May: 6

Months with the highest UV index are July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in May
Rolão, Portugal

Average cloud cover in May - Rolão, Portugal
  • Average cloud cover in May: 26

Months with the most cloud cover are January and April (Cloud cover 40).
Months with the least cloud cover are July and August (Cloud cover 10).

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Average visibility in May
Rolão, Portugal

Average visibility in May - Rolão, Portugal
  • Average visibility in May: 9km

Months with the highest visibility are June, July, August and September (10km).
Months with the lowest visibility are January, February, March, April, May, October, November and December (9km).

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