May weather forecast and climate
Ribas, Portugal

Weather in May

May, the last month of the spring, in Ribas, is a pleasant month, with average temperature fluctuating between 21°C (69.8°F) and 10.4°C (50.7°F).

Temperature

In May, the average high-temperature slightly increases, from a comfortable 17.5°C (63.5°F) in April, to a pleasant 21°C (69.8°F). In Ribas, in May, the average low-temperature is 10.4°C (50.7°F).

Humidity

In Ribas, the average relative humidity is 71%.

Rainfall

In Ribas, it is raining for 11.6 days, with typically 44mm (1.73") of accumulated precipitation. In Ribas, Portugal, during the entire year, the rain falls for 143.8 days and collects up to 847mm (33.35") of precipitation.

Daylight

In May, the average length of the day is 14.5h.

Sunshine

In May, the average sunshine in Ribas, Portugal, is 9.8h.

UV index

In May, the average daily maximum UV index in Ribas, Portugal, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in May in Ribas?

The average high-temperature, in May, in Ribas, Portugal, is 21°C (69.8°F), while the average low-temperature is 10.4°C (50.7°F).

What is the average humidity in May in Ribas?

In May, the average relative humidity in Ribas, Portugal, is 71%.

How much does it rain in Ribas in May?

In May, in Ribas, Portugal, the rain falls for 11.6 days. Throughout May, 44mm (1.73") of precipitation is accumulated.

How many hours of daylight does Ribas have in May?

In May, the average length of the day in Ribas is 14.5h.

How many hours of sunshine does Ribas have in May?

The average sunshine in May in Ribas, Portugal, is 9.8h.

What is the UV index intensity in May in Ribas?

The average daily maximum UV index in May in Ribas is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in May
Ribas, Portugal

Average temperature in May - Ribas, Portugal
  • Average high temperature in May: 21°C

The warmest month (with the highest average high temperature) is August (27.6°C).
The month with the lowest average high temperature is January (11.7°C).

  • Average low temperature in May: 10.4°C

The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (5°C).

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Average pressure in May
Ribas, Portugal

Average pressure in May - Ribas, Portugal
  • Average pressure in May: 1016.5mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in May
Ribas, Portugal

Average wind speed in May - Ribas, Portugal
  • Average wind speed in May: 7.8km/h

The windiest months (with the highest average wind speed) are February and March (8.7km/h).
The calmest month (with the lowest average wind speed) is September (6.7km/h).

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Average humidity in May
Ribas, Portugal

Average humidity in May - Ribas, Portugal
  • Average humidity in May: 71%

The month with the highest relative humidity is January (85%).
Months with the lowest relative humidity are August and September (64%).

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Average rainfall in May
Ribas, Portugal

Average rainfall in May - Ribas, Portugal
  • Average rainfall in May: 44mm

The wettest month (with the highest rainfall) is December (128mm).
The driest month (with the least rainfall) is July (9mm).

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Average rainfall days in May
Ribas, Portugal

Average rainfall days in May - Ribas, Portugal
  • Average rainfall days in May: 11.6 days

Months with the highest number of rainy days are January and November (16.4 days).
The month with the least rainy days is August (4.6 days).

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

Average daylight in May / Average sunshine in May - Ribas, Portugal
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 9.8h

The month with the most sunshine is July (Average sunshine: 11.2h).
The month with the least sunshine is January (Average sunshine: 4.7h).

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Average sunshine days in May
Ribas, Portugal

Average sunshine days in May - Ribas, Portugal
  • Average sunshine days in May: 17.2 days

The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is November (11.2 days).

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Average UV index in May
Ribas, Portugal

Average UV index in May - Ribas, Portugal
  • Average UV index in May: 5

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January, February, March, April, November and December (UV index 3).

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Average cloud cover in May
Ribas, Portugal

Average cloud cover in May - Ribas, Portugal
  • Average cloud cover in May: 33

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in May
Ribas, Portugal

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

Months with the highest visibility are May, June, July, August, September and October (9km).
Months with the lowest visibility are January, February, March, April, November and December (8km).

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