August weather forecast and climate
São Francisco, Portugal

Weather in August

August, the last month of the summer, in São Francisco, is another warm month, with average temperature fluctuating between 17.3°C (63.1°F) and 28.5°C (83.3°F).

Temperature

August is the warmest month, with an average high-temperature of 28.5°C (83.3°F) and an average low-temperature of 17.3°C (63.1°F).

Heat index

The average heat index in August is evaluated at a tropical 31.1°C (88°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 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, wind, pregnancy, and clothing affect individual temperature impact. 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 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.

Humidity

The least humid month in São Francisco is August, with an average relative humidity of 66%.

Rainfall

July and August are months with the least rain when the rain falls for 1.6 days and typically aggregates up to 2mm (0.08") of rain.

Daylight

In São Francisco, the average length of the day in August is 13.6h.

Sunshine

In August, the average sunshine is 11h.

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 hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in São Francisco?

August is the warmest month, with an average high-temperature of 28.5°C (83.3°F) and an average low-temperature of 17.3°C (63.1°F).

What is the temperature in August in São Francisco?

In São Francisco, Portugal, in August, the average high-temperature is 28.5°C (83.3°F), and the average low-temperature is 17.3°C (63.1°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines both air temperature and relative humidity, is appraised at 31.1°C (88°F).

What is the least humid month in São Francisco?

With an average relative humidity of 66%, August is the least humid month in São Francisco, Portugal.

What is the average humidity in August in São Francisco?

The average relative humidity in August in São Francisco, Portugal, is 66%.

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

In São Francisco, in August, during 1.6 rainfall days, 2mm (0.08") of precipitation is typically accumulated.

What is the driest month in São Francisco?

July and August are months with the least rain in São Francisco when the rain falls for 1.6 days and typically aggregates up to 2mm (0.08") of rain.

What is the average length of the day in August in São Francisco?

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

How long on average sun shines in August in São Francisco?

The average sunshine in August in São Francisco is 11h.

What is the month with the highest UV index in São Francisco?

June through September, with an average maximum UV index of 6, are months with the highest UV index in São Francisco, Portugal.

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

In São Francisco, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in August
São Francisco, Portugal

Average temperature in August - São Francisco, Portugal
  • Average high temperature in August: 28.5°C

The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in August: 17.3°C

Months with the highest average low temperature are July and August (17.3°C).
The coldest month (with the lowest average low temperature) is February (9°C).

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Average pressure in August
São Francisco, Portugal

Average pressure in August - São Francisco, Portugal
  • Average pressure in August: 1016.5mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).

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Average wind speed in August
São Francisco, Portugal

Average wind speed in August - São Francisco, Portugal
  • Average wind speed in August: 13.6km/h

The windiest month (with the highest average wind speed) is February (15km/h).
The calmest month (with the lowest average wind speed) is September (11.8km/h).

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Average humidity in August
São Francisco, Portugal

Average humidity in August - São Francisco, Portugal
  • Average humidity in August: 66%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (66%).

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Average rainfall in August
São Francisco, Portugal

Average rainfall in August - São Francisco, Portugal
  • Average rainfall in August: 2mm

The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (2mm).

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Average rainfall days in August
São Francisco, Portugal

Average rainfall days in August - São Francisco, Portugal
  • Average rainfall days in August: 1.6 days

The month with the highest number of rainy days is April (11 days).
The month with the least rainy days is August (1.6 days).

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Average daylight in August /
Average sunshine in August
São Francisco, Portugal

Average daylight in August / Average sunshine in August - São Francisco, 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: 11h

The month with the most sunshine is July (Average sunshine: 11.3h).
The month with the least sunshine is January (Average sunshine: 5.3h).

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Average sunshine days in August
São Francisco, Portugal

Average sunshine days in August - São Francisco, Portugal
  • Average sunshine days in August: 28 days

The month with the most sunshine days is August (28 days).
The month with the least sunshine days is April (17.2 days).

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Average UV index in August
São Francisco, Portugal

Average UV index in August - São Francisco, Portugal
  • Average UV index in August: 6

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

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Average cloud cover in August
São Francisco, Portugal

Average cloud cover in August - São Francisco, Portugal
  • Average cloud cover in August: 13

The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in August
São Francisco, Portugal

Average visibility in August - São Francisco, Portugal
  • 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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