May weather forecast and climate
Rio Bom, Portugal

Weather in May

The last month of the spring, May, is a pleasant month in Rio Bom, Portugal, with average temperature ranging between max 20.4°C (68.7°F) and min 8.1°C (46.6°F).

Temperature

In Rio Bom, the average high-temperature marginally rises, from a comfortable 16°C (60.8°F) in April, to an agreeable 20.4°C (68.7°F). The average low-temperature, in Rio Bom, Portugal, is 8.1°C (46.6°F).

Humidity

In Rio Bom, the average relative humidity in May is 71%.

Rainfall

In Rio Bom, it is raining for 12 days, with typically 34mm (1.34") of accumulated precipitation. In Rio Bom, Portugal, during the entire year, the rain falls for 127.3 days and collects up to 455mm (17.91") of precipitation.

Snowfall

In Rio Bom, Portugal, snow does not fall in March through December.

Daylight

In Rio Bom, Portugal, the average length of the day in May is 14.5h.

Sunshine

In May, the average sunshine in Rio Bom, Portugal, is 9.5h.

UV index

In Rio Bom, 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 the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. 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 Bom?

The average high-temperature, in May, in Rio Bom, Portugal, is 20.4°C (68.7°F), while the average low-temperature is 8.1°C (46.6°F).

What is the average humidity in May in Rio Bom?

The average relative humidity in May in Rio Bom, Portugal, is 71%.

How many days does it rain in May in Rio Bom?

In Rio Bom, Portugal, in May, during 12 rainfall days, 34mm (1.34") of precipitation is typically accumulated.

When it does not snow in Rio Bom?

In Rio Bom, Portugal, snow does not fall in March through December.

What is the average length of the day in May in Rio Bom?

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

How many hours of sunshine does Rio Bom have in May?

In Rio Bom, the average sunshine in May is 9.5h.

What is the UV index reading in May in Rio Bom?

The average daily maximum UV index in May in Rio Bom is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in May
Rio Bom, Portugal

Average temperature in May - Rio Bom, Portugal
  • Average high temperature in May: 20.4°C

The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (8.9°C).

  • Average low temperature in May: 8.1°C

Months with the highest average low temperature are July and August (13.1°C).
The coldest month (with the lowest average low temperature) is February (1.5°C).

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Average pressure in May
Rio Bom, Portugal

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

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in May
Rio Bom, Portugal

Average wind speed in May - Rio Bom, Portugal
  • Average wind speed in May: 7.4km/h

The windiest month (with the highest average wind speed) is March (8.3km/h).
The calmest months (with the lowest average wind speed) are September and October (6.5km/h).

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Average humidity in May
Rio Bom, Portugal

Average humidity in May - Rio Bom, Portugal
  • Average humidity in May: 71%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (56%).

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Average rainfall in May
Rio Bom, Portugal

Average rainfall in May - Rio Bom, Portugal
  • Average rainfall in May: 34mm

The wettest month (with the highest rainfall) is December (72mm).
The driest months (with the least rainfall) are July and August (11mm).

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Average rainfall days in May
Rio Bom, Portugal

Average rainfall days in May - Rio Bom, Portugal
  • Average rainfall days in May: 12 days

The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is August (3.8 days).

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Average snowfall in May
Rio Bom, Portugal

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

The month with the highest snowfall is February (5mm).
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in May
Rio Bom, Portugal

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

The month with the highest number of snowfall days is January (0.3 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Rio Bom, Portugal

Average daylight in May / Average sunshine in May - Rio Bom, 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: 9.3h).

  • Average sunshine in May: 9.5h

The month with the most sunshine is July (Average sunshine: 11.5h).
The month with the least sunshine is January (Average sunshine: 4.4h).

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Average sunshine days in May
Rio Bom, Portugal

Average sunshine days in May - Rio Bom, Portugal
  • Average sunshine days in May: 17.3 days

The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is November (13.5 days).

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Average UV index in May
Rio Bom, Portugal

Average UV index in May - Rio Bom, 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 Bom, Portugal

Average cloud cover in May - Rio Bom, Portugal
  • Average cloud cover in May: 36

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in May
Rio Bom, Portugal

Average visibility in May - Rio Bom, Portugal
  • Average visibility in May: 8km

The month with the highest visibility is August (10km).
The month with the lowest visibility is January (6km).

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