July weather forecast and climate
São Matias, Portugal

Weather in July

July, like June, is another hot summer month in São Matias, Portugal, with temperature in the range of an average high of 34°C (93.2°F) and an average low of 17.7°C (63.9°F).

Temperature

In July, the average high-temperature slightly increases, from 30.3°C (86.5°F) in June, to a still hot 34°C (93.2°F). In São Matias, the average low-temperature is 17.7°C (63.9°F).

Heat index

In July, the average heat index is estimated at a torrid 37.7°C (99.9°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', 'real feel', 'feels like', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, metabolic differences, wind). 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 especially crucial for babies and toddlers. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in São Matias is 48%.

Rainfall

July and August are months with the least rain in São Matias when the rain falls for 1.8 days and typically aggregates up to 1mm (0.04") of rain.

Daylight

In July, the average length of the day in São Matias, Portugal, is 14.6h.

Sunshine

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

UV index

Months with the highest UV index are July and August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from the exposure to the Sun's UV rays for average individuals.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 temperature in July in São Matias?

The average high-temperature, in July, in São Matias, is 34°C (93.2°F), while the average low-temperature is 17.7°C (63.9°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines air temperature and relative humidity, in July is estimated at 37.7°C (99.9°F).

What is the average humidity in July in São Matias?

In São Matias, Portugal, the average relative humidity in July is 48%.

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

In July, the rain falls for 1.8 days. Throughout July, 1mm (0.04") of precipitation is accumulated.

What is the driest month in São Matias?

Months with the least rainfall are July and August Rain falls for 1.8 days and accumulates 1mm (0.04") of rain.

What is the average length of the day in July in São Matias?

In July, the average length of the day in São Matias is 14.6h.

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, Portugal.

How long on average sun shines in July in São Matias?

The average sunshine in July in São Matias is 11.6h.

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

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

What is the UV index reading in July in São Matias?

The average daily maximum UV index in July in São Matias is 7. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.

Average temperature in July
São Matias, Portugal

Average temperature in July - São Matias, Portugal
  • Average high temperature in July: 34°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 July: 17.7°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 July
São Matias, Portugal

Average pressure in July - São Matias, Portugal
  • Average pressure in July: 1015.8mbar

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 July
São Matias, Portugal

Average wind speed in July - São Matias, Portugal
  • Average wind speed in July: 11.9km/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 July
São Matias, Portugal

Average humidity in July - São Matias, Portugal
  • Average humidity in July: 48%

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 July
São Matias, Portugal

Average rainfall in July - São Matias, Portugal
  • Average rainfall in July: 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 July
São Matias, Portugal

Average rainfall days in July - São Matias, Portugal
  • Average rainfall days in July: 1.8 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 July /
Average sunshine in July
São Matias, Portugal

Average daylight in July / Average sunshine in July - São Matias, Portugal
  • Average daylight in July: 14.6h

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 July: 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 July
São Matias, Portugal

Average sunshine days in July - São Matias, Portugal
  • Average sunshine days in July: 28.9 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 July
São Matias, Portugal

Average UV index in July - São Matias, Portugal
  • Average UV index in July: 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 July
São Matias, Portugal

Average cloud cover in July - São Matias, Portugal
  • Average cloud cover in July: 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 July
São Matias, Portugal

Average visibility in July - São Matias, Portugal
  • Average visibility in July: 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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