Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
August
Weather in August
Temperature
The warmest period is August, when temperatures fluctuate between an average high of 28.5°C (83.3°F) and a low of 17.3°C (63.1°F).Heat index
In August, the average heat index is computed to be a hot 31°C (87.8°F). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
With an average relative humidity of 66%, August is the least humid month.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 13h and 38min.On the first day of August, sunrise is at 06:37 and sunset at 20:46. On the last day of the month, sunrise is at 07:04 and sunset at 20:07 WEST.
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 estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 6 during August, leads to the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the warmest months?
How hot is it in August?
What is the least humid month?
What is the average humidity in August?
What is the driest month?
How much does it rain in August?
What is the average length of the day in August?
What time are sunrise and sunset in August?
How many hours of sunshine does São Francisco have in August?
What are the months with the highest UV index?
What is the UV index reading in August?
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
The 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).
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).
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).
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%).
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).
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).
Average daylight in August /
Average sunshine in August
São Francisco, 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 0min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
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).
Average UV index in August
São Francisco, Portugal
- Average UV index in August: 6
The 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).
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).
Average visibility in August
São Francisco, 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).
