May weather forecast and climate
Rio de Onor, Portugal

Weather in May

May, the last month of the spring, in Rio de Onor, is an enjoyable month, with average temperature ranging between min 8°C (46.4°F) and max 19.6°C (67.3°F).

Temperature

In May, the average high-temperature slightly increases, from a moderate 15.5°C (59.9°F) in April, to an enjoyable 19.6°C (67.3°F). The average low-temperature, in Rio de Onor, is 8°C (46.4°F).

Humidity

In May, the average relative humidity in Rio de Onor is 69%.

Rainfall

In Rio de Onor, in May, during 14.3 rainfall days, 42mm (1.65") of precipitation is typically accumulated. Throughout the year, in Rio de Onor, Portugal, there are 141.7 rainfall days, and 532mm (20.94") of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in Rio de Onor is 14.6h.

Sunshine

In Rio de Onor, the average sunshine in May is 10.1h.

UV index

In Rio de Onor, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in May in Rio de Onor?

The average high-temperature, in May, in Rio de Onor, is 19.6°C (67.3°F), while the average low-temperature is 8°C (46.4°F).

What is the average humidity in May in Rio de Onor?

In May, the average relative humidity is 69%.

How much does it rain in Rio de Onor in May?

In Rio de Onor, Portugal, in May, during 14.3 rainfall days, 42mm (1.65") of precipitation is typically accumulated.

When it does not snow in Rio de Onor?

April through October are months without snowfall.

What is the average length of the day in May in Rio de Onor?

In Rio de Onor, the average length of the day in May is 14.6h.

How long on average sun shines in May in Rio de Onor?

In Rio de Onor, Portugal, the average sunshine in May is 10.1h.

What is the UV index intensity in May in Rio de Onor?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in May
Rio de Onor, Portugal

Average temperature in May - Rio de Onor, Portugal
  • Average high temperature in May: 19.6°C

The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in May: 8°C

The month with the highest average low temperature is July (13.8°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).

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Average pressure in May
Rio de Onor, Portugal

Average pressure in May - Rio de Onor, Portugal
  • Average pressure in May: 1016.7mbar

The month with the highest atmospheric pressure is December (1022.9mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

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Average wind speed in May
Rio de Onor, Portugal

Average wind speed in May - Rio de Onor, Portugal
  • Average wind speed in May: 9.4km/h

The windiest month (with the highest average wind speed) is March (11.2km/h).
The calmest month (with the lowest average wind speed) is September (8.4km/h).

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Average humidity in May
Rio de Onor, Portugal

Average humidity in May - Rio de Onor, Portugal
  • Average humidity in May: 69%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (52%).

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Average rainfall in May
Rio de Onor, Portugal

Average rainfall in May - Rio de Onor, Portugal
  • Average rainfall in May: 42mm

The wettest month (with the highest rainfall) is November (73mm).
The driest month (with the least rainfall) is August (11mm).

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Average rainfall days in May
Rio de Onor, Portugal

Average rainfall days in May - Rio de Onor, Portugal
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is April (17.6 days).
The month with the least rainy days is August (4.2 days).

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Average snowfall in May
Rio de Onor, Portugal

Average snowfall in May - Rio de Onor, Portugal
  • Average snowfall in May: 0mm

The month with the highest snowfall is February (19mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in May
Rio de Onor, Portugal

Average snowfall days in May - Rio de Onor, Portugal
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (2.1 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Rio de Onor, Portugal

Average daylight in May / Average sunshine in May - Rio de Onor, Portugal
  • Average daylight in May: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 10.1h

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 4.8h).

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Average sunshine days in May
Rio de Onor, Portugal

Average sunshine days in May - Rio de Onor, Portugal
  • Average sunshine days in May: 14.4 days

The month with the most sunshine days is August (24.5 days).
The month with the least sunshine days is April (10.8 days).

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Average UV index in May
Rio de Onor, Portugal

Average UV index in May - Rio de Onor, Portugal
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Rio de Onor, Portugal

Average cloud cover in May - Rio de Onor, Portugal
  • Average cloud cover in May: 32

The month with the most cloud cover is January (Cloud cover 50).
Months with the least cloud cover are July and August (Cloud cover 13).

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Average visibility in May
Rio de Onor, Portugal

Average visibility in May - Rio de Onor, 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, November and December (8km).

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