May weather forecast and climate
São Matias, Portugal

Weather in May

The last month of the spring, May, is a warm month in São Matias, 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 May, the average high-temperature increases, from a pleasant 20.7°C (69.3°F) in April, to a moderately hot 25.9°C (78.6°F). In São Matias, the average low-temperature is 12.8°C (55°F).

Humidity

The average relative humidity is 61%.

Rainfall

In São Matias, Portugal, during May, the rain falls for 5.1 days and regularly aggregates up to 11mm (0.43") of precipitation. Throughout the year, there are 65.2 rainfall days, and 110mm (4.33") of precipitation is accumulated.

Daylight

In May, the average length of the day in São Matias is 14.3h.

Sunshine

The average sunshine in May is 10.2h.

UV index

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 São Matias?

The average high-temperature, in May, in São Matias, Portugal, is 25.9°C (78.6°F), while the average low-temperature is 12.8°C (55°F).

What is the average humidity in May in São Matias?

In May, the average relative humidity is 61%.

How many days does it rain in May in São Matias?

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

How many hours of daylight does São Matias have in May?

In May, the average length of the day in São Matias is 14.3h.

How many hours of sunshine does São Matias have in May?

The average sunshine in May in São Matias, Portugal, is 10.2h.

What is the UV index intensity in May in São Matias?

In São Matias, Portugal, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in May
São Matias, Portugal

Average temperature in May - São Matias, 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
São Matias, Portugal

Average pressure in May - São Matias, 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
São Matias, Portugal

Average wind speed in May - São Matias, 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 (9.4km/h).

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Average humidity in May
São Matias, Portugal

Average humidity in May - São Matias, 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
São Matias, Portugal

Average rainfall in May - São Matias, 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
São Matias, Portugal

Average rainfall days in May - São Matias, 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
São Matias, Portugal

Average daylight in May / Average sunshine in May - São Matias, Portugal
  • Average daylight in May: 14.3h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • 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
São Matias, Portugal

Average sunshine days in May - São Matias, 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
São Matias, Portugal

Average UV index in May - São Matias, 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
São Matias, Portugal

Average cloud cover in May - São Matias, 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
São Matias, Portugal

Average visibility in May - São Matias, 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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