August weather forecast and climate
Barcelona, Spain

The artistic Park Gull designed by Gaudi in Barcelona, Spain
The artistic Park Gull designed by Gaudi in Barcelona, Spain

Weather in August

August, the last month of the summer, in Barcelona, is another warm month, with average temperature varying between 22.1°C (71.8°F) and 27.5°C (81.5°F).

Temperature

With an average high-temperature of 27.5°C (81.5°F) and an average low-temperature of 22.1°C (71.8°F), August is the warmest month.

Heat index

The average heat index in August is appraised at 29.6°C (85.3°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', 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 (pregnancy, wind, clothing). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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

In Barcelona, the average relative humidity is 69%.

Rainfall

In Barcelona, during August, the rain falls for 10.3 days and regularly aggregates up to 27mm (1.06") of precipitation. Throughout the year, there are 117.9 rainfall days, and 435mm (17.13") of precipitation is accumulated.

Snowfall

In Barcelona snow does not fall in March through August, October through December.

Sea temperature

The month with the warmest seawater is August, with an average sea temperature of 25.3°C (77.5°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In August, the average length of the day in Barcelona, Spain, is 13.8h.

Sunshine

In Barcelona, the average sunshine in August is 10.3h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. 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 in August interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the warmest month in Barcelona?

With an average high-temperature of 27.5°C (81.5°F) and an average low-temperature of 22.1°C (71.8°F), August is the warmest month.

What is the temperature in August in Barcelona?

In August, in Barcelona, Spain, the average high-temperature is 27.5°C (81.5°F), and the average low-temperature is 22.1°C (71.8°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, in August is calculated to 29.6°C (85.3°F).

What is the average humidity in August in Barcelona?

In Barcelona, Spain, the average relative humidity in August is 69%.

How many days does it rain in August in Barcelona?

In Barcelona, Spain, in August, during 10.3 rainfall days, 27mm (1.06") of precipitation is typically accumulated.

Does it snow in Barcelona in August?

In Barcelona, in August, it doesn't snow. In September, it regularly snows.

When it does not snow in Barcelona?

March through August, October through December are months without snowfall in Barcelona, Spain.

When is the sea warmest in Barcelona?

The month with the warmest seawater in Barcelona, Spain, is August, with an average sea temperature of 25.3°C (77.5°F).

How warm is the water in August in Barcelona?

In August, the average sea temperature in Barcelona, Spain, is 25.3°C (77.5°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

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

The average length of the day in August in Barcelona is 13.8h.

How many hours of sunshine does Barcelona have in August?

In Barcelona, the average sunshine in August is 10.3h.

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

Months with the highest UV index in Barcelona are June through September, with an average maximum UV index of 6.

What is the UV index intensity in August in Barcelona?

In Barcelona, Spain, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.

Average temperature in August
Barcelona, Spain

Average temperature in August - Barcelona, Spain
  • Average high temperature in August: 27.5°C

The warmest month (with the highest average high temperature) is August (27.5°C).
The month with the lowest average high temperature is January (12.4°C).

  • Average low temperature in August: 22.1°C

The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is February (7.1°C).

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Average pressure in August
Barcelona, Spain

Average pressure in August - Barcelona, Spain
  • Average pressure in August: 1016.3mbar

The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1014.7mbar).

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Average wind speed in August
Barcelona, Spain

Average wind speed in August - Barcelona, Spain
  • Average wind speed in August: 9.3km/h

The windiest month (with the highest average wind speed) is March (12.1km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).

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Average humidity in August
Barcelona, Spain

Average humidity in August - Barcelona, Spain
  • Average humidity in August: 69%

Months with the highest relative humidity are April and October (72%).
Months with the lowest relative humidity are February, June and November (68%).

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Average rainfall in August
Barcelona, Spain

Average rainfall in August - Barcelona, Spain
  • Average rainfall in August: 27mm

The wettest month (with the highest rainfall) is October (73mm).
The driest month (with the least rainfall) is February (16mm).

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Average rainfall days in August
Barcelona, Spain

Average rainfall days in August - Barcelona, Spain
  • Average rainfall days in August: 10.3 days

The month with the highest number of rainy days is September (13.8 days).
The month with the least rainy days is December (6.4 days).

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Average snowfall in August
Barcelona, Spain

Average snowfall in August - Barcelona, Spain
  • Average snowfall in August: 0mm

Months with the highest snowfall are January, February and September (1mm).
Months with the least snowfall are March, April, May, June, July, August, October, November and December (0mm).

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Average snowfall days in August
Barcelona, Spain

Average snowfall days in August - Barcelona, Spain
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (0.2 days).
Months with the least snowfall days are March, April, May, June, July, August, October, November and December (0 days).

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Average sea temperature in August
Barcelona, Spain

Average sea temperature in August - Barcelona, Spain
  • Average sea temperature in August: 25.3°C

The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (13.1°C).

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Average daylight in August /
Average sunshine in August
Barcelona, Spain

Average daylight in August / Average sunshine in August - Barcelona, Spain
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in August: 10.3h

Months with the most sunshine are June and July (Average sunshine: 11.7h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in August
Barcelona, Spain

Average sunshine days in August - Barcelona, Spain
  • Average sunshine days in August: 15.4 days

The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is September (12.3 days).

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Average UV index in August
Barcelona, Spain

Average UV index in August - Barcelona, Spain
  • Average UV index in August: 6

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

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Average cloud cover in August
Barcelona, Spain

Average cloud cover in August - Barcelona, Spain
  • Average cloud cover in August: 18

The month with the most cloud cover is April (Cloud cover 31).
The month with the least cloud cover is July (Cloud cover 16).

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Average visibility in August
Barcelona, Spain

Average visibility in August - Barcelona, Spain
  • Average visibility in August: 10km

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

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