August weather forecast
Barreiro, Portugal

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Weather in August

August in Barreiro, Portugal holds onto the summer heat, with a temperature swing from 17.8°C (64°F) to 27.1°C (80.8°F). Although similar to July in rainfall, August marks a decrease in daylight and a slight increase in cloud cover. Visibility and atmospheric pressure remain stable compared to previous months. Gentle breezes complement the warm days of August.

Temperature

With average temperatures fluctuating between a high of 27.1°C (80.8°F) and a low of 17.8°C (64°F), August stands out as the warmest month in Barreiro, Portugal.

Heat index

In August, the average heat index is appraised at 29°C (84.2°F). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular importance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

August is the least humid month in Barreiro, with an average relative humidity of 68%.

Rainfall

June through August are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 1mm (0.04") of rain.

Daylight

The average length of the day in August in Barreiro is 13h and 38min.
On the first day of August, sunrise is at 06:38 and sunset at 20:46. On the last day of the month, sunrise is at 07:05 and sunset at 20:07 WEST.

Sunshine

In Barreiro, the average sunshine in August is 11.1h.

UV index

May through September, with an average maximum UV index of 6, are months with the highest UV index in Barreiro. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 6 in August transforms into this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

What part of the year is the hottest in Barreiro?

In Barreiro, Portugal, the peak temperatures are generally noted in August, averaging a high of 27.1°C (80.8°F) and a low of 17.8°C (64°F).

What is the temperature in August in Barreiro?

August temperatures in Barreiro, Portugal, vary between a high-temperature of 27.1°C (80.8°F) and a low-temperature of 17.8°C (64°F). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 29°C (84.2°F).

What is the least humid month in Barreiro?

August is the least humid month, with an average relative humidity of 68%.

What is the average humidity in August in Barreiro?

In Barreiro, the average relative humidity in August is 68%.

What is the driest month in Barreiro?

The months with the least rainfall in Barreiro, Portugal, are June through August Rain falls for 0.8 days and accumulates 1mm (0.04") of rain.

How many days does it rain in August in Barreiro?

In August, the rain falls for 0.8 days. Throughout August, 1mm (0.04") of precipitation is accumulated.

What is the average length of the day in August in Barreiro?

In August, the average day length is 13h and 38min.

When are sunrise and sunset in August in Barreiro?

On the first day of August in Barreiro, Portugal, sunrise is at 06:38 and sunset at 20:46. On the last day of the month, sunrise is at 07:05 and sunset at 20:07 WEST.

How long on average sun shines in August in Barreiro?

In August, the average sunshine duration in Barreiro, Portugal, is 11.1h.

What are the months with the highest UV index in Barreiro?

The months with the highest UV index in Barreiro, Portugal, are May through September, with an average maximum UV index of 6.

How high is the UV index in August in Barreiro?

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

Average temperature in August
Barreiro, Portugal

Average temperature in August - Barreiro, 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 (14.9°C).

  • Average low temperature in August: 17.8°C

The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is February (9.8°C).

Average pressure in August
Barreiro, Portugal

Average pressure in August - Barreiro, Portugal
  • Average pressure in August: 1016.6mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).

Average wind speed in August
Barreiro, Portugal

Average wind speed in August - Barreiro, Portugal
  • Average wind speed in August: 15km/h

The windiest month (with the highest average wind speed) is February (16.5km/h).
The calmest month (with the lowest average wind speed) is September (13.1km/h).

Average humidity in August
Barreiro, Portugal

Average humidity in August - Barreiro, Portugal
  • Average humidity in August: 68%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (68%).

Average rainfall in August
Barreiro, Portugal

Average rainfall in August - Barreiro, Portugal
  • Average rainfall in August: 1mm

The wettest month (with the highest rainfall) is November (15mm).
The driest months (with the least rainfall) are June, July and August (1mm).

Average rainfall days in August
Barreiro, Portugal

Average rainfall days in August - Barreiro, Portugal
  • Average rainfall days in August: 0.8 days

The month with the highest number of rainy days is November (9.3 days).
The month with the least rainy days is August (0.8 days).

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

Average daylight in August / Average sunshine in August - Barreiro, Portugal
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 11h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days in August
Barreiro, Portugal

Average sunshine days in August - Barreiro, Portugal
  • Average sunshine days in August: 29.3 days

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is November (17.7 days).

Average UV index in August
Barreiro, Portugal

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

The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

Average cloud cover in August
Barreiro, Portugal

Average cloud cover in August - Barreiro, Portugal
  • Average cloud cover in August: 13

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in August
Barreiro, Portugal

Average visibility in August - Barreiro, Portugal
  • Average visibility in August: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Barreiro, Portugal

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