August weather forecast and climate
São Matias, Portugal

Weather in August

August, the last month of the summer, in São Matias, is another hot month, with temperature in the range of an average low of 17.8°C (64°F) and an average high of 34.7°C (94.5°F).

Temperature

The warmest month is August, with an average high-temperature of 34.7°C (94.5°F) and an average low-temperature of 17.8°C (64°F).

Heat index

The average heat index in August is appraised at a sweltering 38.9°C (102°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, metabolic differences, differences in body mass, height, and shape). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The least humid month in São Matias, Portugal, is August, with an average relative humidity of 47%.

Rainfall

July and August are months with the least rain when the rain falls for 1 days and typically aggregates up to 1mm (0.04") of rain.

Daylight

In São Matias, the average length of the day is 13.6h.

Sunshine

July and August, with an average of 11.6h of sunshine, are months with the most sunshine.

UV index

July and August, with an average maximum UV index of 7, are months with the highest UV index in São Matias. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 transform into the following instructions:
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. 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 warmest month in São Matias?

August is the warmest month in São Matias, Portugal, with an average high-temperature of 34.7°C (94.5°F) and an average low-temperature of 17.8°C (64°F).

What is the temperature in August in São Matias?

In August, in São Matias, Portugal, the average high-temperature is 34.7°C (94.5°F), and the average low-temperature is 17.8°C (64°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines air temperature and relative humidity, is appraised at 38.9°C (102°F).

What is the least humid month in São Matias?

The least humid month is August, with an average relative humidity of 47%.

What is the average humidity in August in São Matias?

In São Matias, Portugal, the average relative humidity in August is 47%.

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

In São Matias, Portugal, in August, during 1 rainfall days, 1mm (0.04") of precipitation is typically accumulated.

What is the driest month in São Matias?

Months with the least rainfall in São Matias, Portugal, are July and August Rain falls for 1 days and accumulates 1mm (0.04") of rain.

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

The average length of the day in August is 13.6h.

What is the month with the most sunshine in São Matias?

July and August, with an average of 11.6h of sunshine, are months with the most sunshine in São Matias.

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

In August, the average sunshine in São Matias is 11.6h.

What are the months with the highest UV index in São Matias?

Months with the highest UV index are July and August, with an average maximum UV index of 7.

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

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

Average temperature in August
São Matias, Portugal

Average temperature in August - São Matias, Portugal
  • Average high temperature in August: 34.7°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 August: 17.8°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 August
São Matias, Portugal

Average pressure in August - São Matias, Portugal
  • Average pressure in August: 1015.6mbar

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 August
São Matias, Portugal

Average wind speed in August - São Matias, Portugal
  • Average wind speed in August: 11.1km/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 August
São Matias, Portugal

Average humidity in August - São Matias, Portugal
  • Average humidity in August: 47%

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 August
São Matias, Portugal

Average rainfall in August - São Matias, Portugal
  • Average rainfall in August: 1mm

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 August
São Matias, Portugal

Average rainfall days in August - São Matias, Portugal
  • Average rainfall days in August: 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 August /
Average sunshine in August
São Matias, Portugal

Average daylight in August / Average sunshine in August - São Matias, Portugal
  • Average daylight in August: 13.6h

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 August: 11.6h

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 August
São Matias, Portugal

Average sunshine days in August - São Matias, Portugal
  • Average sunshine days in August: 28.8 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 August
São Matias, Portugal

Average UV index in August - São Matias, Portugal
  • Average UV index in August: 7

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 August
São Matias, Portugal

Average cloud cover in August - São Matias, Portugal
  • Average cloud cover in August: 10

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 August
São Matias, Portugal

Average visibility in August - São Matias, Portugal
  • Average visibility in August: 10km

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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