August weather forecast and climate
Santiais, Portugal

Weather in August

August, the last month of the summer, in Santiais, is another warm month, with average temperature ranging between max 27.1°C (80.8°F) and min 14.8°C (58.6°F).

Temperature

With an average high-temperature of 27.1°C (80.8°F) and an average low-temperature of 14.8°C (58.6°F), August is the warmest month.

Heat index

In August, the average heat index is appraised at 28.7°C (83.7°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, pregnancy), and activity. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

August and September, with an average relative humidity of 66%, are the least humid months in Santiais.

Rainfall

In Santiais, during August, the rain falls for 4.3 days and regularly aggregates up to 9mm (0.35") of precipitation. In Santiais, during the entire year, the rain falls for 135.4 days and collects up to 778mm (30.63") of precipitation.

Daylight

In August, the average length of the day in Santiais is 13.7h.

Sunshine

In Santiais, the average sunshine is 10.8h.

UV index

Months with the highest UV index are June and August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
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 warmest month in Santiais?

With an average high-temperature of 27.1°C (80.8°F) and an average low-temperature of 14.8°C (58.6°F), August is the warmest month in Santiais, Portugal.

What is the temperature in August in Santiais?

In August, in Santiais, Portugal, the average high-temperature is 27.1°C (80.8°F), and the average low-temperature is 14.8°C (58.6°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines air temperature and relative humidity, in August is estimated at 28.7°C (83.7°F).

What are the least humid months in Santiais?

August and September, with an average relative humidity of 66%, are the least humid months in Santiais.

What is the average humidity in August in Santiais?

The average relative humidity in August in Santiais is 66%.

How many days does it rain in August in Santiais?

In Santiais, Portugal, in August, during 4.3 rainfall days, 9mm (0.35") of precipitation is typically accumulated.

How many hours of daylight does Santiais have in August?

In August, the average length of the day in Santiais, Portugal, is 13.7h.

How long on average sun shines in August in Santiais?

In Santiais, the average sunshine in August is 10.8h.

When is the highest UV index in Santiais?

Months with the highest UV index in Santiais are June and August, with an average maximum UV index of 6.

What is the UV index reading in August in Santiais?

The average daily maximum UV index in August in Santiais, Portugal, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in August
Santiais, Portugal

Average temperature in August - Santiais, Portugal
  • Average high temperature in August: 27.1°C

The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (12.6°C).

  • Average low temperature in August: 14.8°C

Months with the highest average low temperature are July and August (14.8°C).
The coldest month (with the lowest average low temperature) is January (6°C).

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Average pressure in August
Santiais, Portugal

Average pressure in August - Santiais, Portugal
  • Average pressure in August: 1016.8mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in August
Santiais, Portugal

Average wind speed in August - Santiais, Portugal
  • Average wind speed in August: 7.8km/h

The windiest month (with the highest average wind speed) is February (9.7km/h).
The calmest month (with the lowest average wind speed) is September (7.3km/h).

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Average humidity in August
Santiais, Portugal

Average humidity in August - Santiais, Portugal
  • Average humidity in August: 66%

The month with the highest relative humidity is January (83%).
Months with the lowest relative humidity are August and September (66%).

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Average rainfall in August
Santiais, Portugal

Average rainfall in August - Santiais, Portugal
  • Average rainfall in August: 9mm

The wettest month (with the highest rainfall) is November (119mm).
The driest month (with the least rainfall) is July (8mm).

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Average rainfall days in August
Santiais, Portugal

Average rainfall days in August - Santiais, Portugal
  • Average rainfall days in August: 4.3 days

The month with the highest number of rainy days is November (15.7 days).
The month with the least rainy days is August (4.3 days).

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Average daylight in August /
Average sunshine in August
Santiais, Portugal

Average daylight in August / Average sunshine in August - Santiais, Portugal
  • Average daylight in August: 13.7h

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 August: 10.8h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is January (Average sunshine: 5h).

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Average sunshine days in August
Santiais, Portugal

Average sunshine days in August - Santiais, Portugal
  • Average sunshine days in August: 25.3 days

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is November (11.6 days).

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Average UV index in August
Santiais, Portugal

Average UV index in August - Santiais, Portugal
  • Average UV index in August: 6

Months with the highest UV index are June and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

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Average cloud cover in August
Santiais, Portugal

Average cloud cover in August - Santiais, Portugal
  • Average cloud cover in August: 21

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in August
Santiais, Portugal

Average visibility in August - Santiais, Portugal
  • Average visibility in August: 9km

Months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).

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