August weather forecast
São João, Guinea-Bissau

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Weather in August

August, the last month of the summer in São João, is also a moderately hot month, with temperature in the range of an average low of 25°C (77°F) and an average high of 29.6°C (85.3°F).

Temperature

The coldest temperatures occur during August, when averages reach a peak of 29.6°C (85.3°F) and a low of 25°C (77°F).

Heat index

The heat index in August is evaluated at a torrid 37°C (98.6°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. 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.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

With an average relative humidity of 82%, August is the most humid month in São João.

Rainfall

August is the month with the most rainfall in São João. Rain falls for 26.9 days and accumulates 270mm (10.63") of precipitation.

Daylight

The average length of the day in August in São João is 12h and 30min.
On the first day of August, sunrise is at 06:49 and sunset at 19:26. On the last day of the month, sunrise is at 06:51 and sunset at 19:12 GMT.

Sunshine

August has the least sunshine of the year, with an average of 6.1h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 7 during August translates into the following directions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What part of the year is the coldest in São João?

São João experiences its average lowest temperatures in August, reaching a peak of 29.6°C (85.3°F) and a minimum of 25°C (77°F).

How hot does it get in São João in August?

The high-temperature in São João during August is 29.6°C (85.3°F) and the low-temperature is 25°C (77°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is evaluated at 37°C (98.6°F).

What is the most humid month in São João?

The most humid month in São João is August, with an average relative humidity of 82%.

What is the average humidity in August in São João?

In August, the average relative humidity is 82%.

What is the rainiest month in São João?

The month with the most rainfall is August, when the rain falls for 26.9 days and typically aggregates up to 270mm (10.63") of precipitation.

How much does it rain in São João in August?

In São João, Guinea-Bissau, during August, the rain falls for 26.9 days and regularly aggregates up to 270mm (10.63") of precipitation.

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

In August, the average day length is 12h and 30min.

When is the sunrise / sunset in August in São João?

On the first day of August, sunrise is at 06:49 and sunset at 19:26. On the last day of the month, sunrise is at 06:51 and sunset at 19:12 GMT.

What is the month with the least sunshine in São João?

The month with the least sunshine in São João is August, with an average of 6.1h of sunshine.

How many hours of sunshine does São João have in August?

The average sunshine duration in August in São João, Guinea-Bissau, is 6.1h.

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

The months with the highest UV index in São João are January through December, with an average maximum UV index of 7.

What is the month with the lowest UV index in São João?

January through December, with an average maximum UV index of 7, are months with the lowest UV index in São João.

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

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

Average temperature in August
São João, Guinea-Bissau

Average temperature in August - São João, Guinea-Bissau
  • Average high temperature in August: 29.6°C

The warmest month (with the highest average high temperature) is March (35.5°C).
The month with the lowest average high temperature is August (29.6°C).

  • Average low temperature in August: 25°C

The month with the highest average low temperature is June (26°C).
The coldest month (with the lowest average low temperature) is January (21.8°C).

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Average pressure in August
São João, Guinea-Bissau

Average pressure in August - São João, Guinea-Bissau
  • Average pressure in August: 1012.4mbar

The month with the highest atmospheric pressure is July (1012.9mbar).
The months with the lowest atmospheric pressure are March and April (1010.1mbar).

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Average wind speed in August
São João, Guinea-Bissau

Average wind speed in August - São João, Guinea-Bissau
  • Average wind speed in August: 12.1km/h

The windiest month (with the highest average wind speed) is June (13.2km/h).
The calmest months (with the lowest average wind speed) are October and November (9km/h).

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Average humidity in August
São João, Guinea-Bissau

Average humidity in August - São João, Guinea-Bissau
  • Average humidity in August: 82%

The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is January (32%).

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Average rainfall in August
São João, Guinea-Bissau

Average rainfall in August - São João, Guinea-Bissau
  • Average rainfall in August: 270mm

The wettest month (with the highest rainfall) is August (270mm).
The driest months (with the least rainfall) are January and February (0mm).

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Average rainfall days in August
São João, Guinea-Bissau

Average rainfall days in August - São João, Guinea-Bissau
  • Average rainfall days in August: 26.9 days

The month with the highest number of rainy days is August (26.9 days).
The month with the least rainy days is January (0.3 days).

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Average daylight in August /
Average sunshine in August
São João, Guinea-Bissau

Average daylight in August / Average sunshine in August - São João, Guinea-Bissau
  • Average daylight in August: 12h and 3min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in August: 6h and 1min

The months with the most sunshine are March, April and May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 6min).

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Average sunshine days in August
São João, Guinea-Bissau

Average sunshine days in August - São João, Guinea-Bissau
  • Average sunshine days in August: 2.9 days

The month with the most sunshine days is January (30.7 days).
The month with the least sunshine days is August (2.9 days).

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Average UV index in August
São João, Guinea-Bissau

Average UV index in August - São João, Guinea-Bissau
  • Average UV index in August: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

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Average cloud cover in August
São João, Guinea-Bissau

Average cloud cover in August - São João, Guinea-Bissau
  • Average cloud cover in August: 57

The month with the most cloud cover is August (Cloud cover 57).
The months with the least cloud cover are March and April (Cloud cover 7).

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Average visibility in August
São João, Guinea-Bissau

Average visibility in August - São João, Guinea-Bissau
  • Average visibility in August: 9km

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).

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São João, Guinea-Bissau

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