August weather forecast
Petit Cayenne, French Guiana

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Weather in August

The last month of the summer, August, is a tropical month in Petit Cayenne, French Guiana, with an average temperature varying between 23.9°C (75°F) and 30.9°C (87.6°F).

Temperature

The commencement of August records an average high-temperature of a tropical 30.9°C (87.6°F), barely varying from July's 29.8°C (85.6°F). An average nighttime temperature of 23.9°C (75°F) is observed during August.

Heat index

The average heat index in August is evaluated at a blisteringly hot 40°C (104°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In August, the average relative humidity is 78%.

Rainfall

In August, in Petit Cayenne, the rain falls for 19.2 days. Throughout August, 68mm (2.68") of precipitation is accumulated. In Petit Cayenne, during the entire year, the rain falls for 277 days and collects up to 1707mm (67.2") of precipitation.

Daylight

In August, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 06:26 and sunset at 18:45. On the last day of August, sunrise is at 06:23 and sunset at 18:36 -03.

Sunshine

The average sunshine in August is 8.8h.

UV index

The months with the highest UV index in Petit Cayenne are June through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 7 in August leads to these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

How hot is it in Petit Cayenne in August?

The high-temperature in Petit Cayenne during August is 30.9°C (87.6°F) and the low-temperature is 23.9°C (75°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in August is evaluated at 40°C (104°F).

What is the average humidity in August in Petit Cayenne?

In August, the average relative humidity is 78%.

How much does it rain in Petit Cayenne in August?

In August, the rain falls for 19.2 days. Throughout August, 68mm (2.68") of precipitation is accumulated.

How many hours of daylight does Petit Cayenne have in August?

In August, the average day length in Petit Cayenne is 12h and 16min.

When are sunrise and sunset in August in Petit Cayenne?

In August, on the first day of the month, sunrise is at 06:26 and sunset at 18:45. On the last day of the month, in Petit Cayenne, French Guiana, sunrise is at 06:23 and sunset at 18:36 -03.

How long on average sun shines in August in Petit Cayenne?

In August, the average sunshine duration in Petit Cayenne, French Guiana, is 8.8h.

When is the highest UV index in Petit Cayenne?

June through November, with an average maximum UV index of 7, are months with the highest UV index in Petit Cayenne.

How high is the UV index in August in Petit Cayenne?

In August, the average daily maximum UV index in Petit Cayenne is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in August
Petit Cayenne, French Guiana

Average temperature in August - Petit Cayenne, French Guiana
  • Average high temperature in August: 30.9°C

The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (27.7°C).

  • Average low temperature in August: 23.9°C

The months with the highest average low temperature are October and November (24.8°C).
The coldest months (with the lowest average low temperature) are June and July (23.8°C).

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Average pressure in August
Petit Cayenne, French Guiana

Average pressure in August - Petit Cayenne, French Guiana
  • Average pressure in August: 1012.7mbar

The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

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Average wind speed in August
Petit Cayenne, French Guiana

Average wind speed in August - Petit Cayenne, French Guiana
  • Average wind speed in August: 10km/h

The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is July (8.3km/h).

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Average humidity in August
Petit Cayenne, French Guiana

Average humidity in August - Petit Cayenne, French Guiana
  • Average humidity in August: 78%

The month with the highest relative humidity is May (86%).
The months with the lowest relative humidity are September and October (76%).

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Average rainfall in August
Petit Cayenne, French Guiana

Average rainfall in August - Petit Cayenne, French Guiana
  • Average rainfall in August: 68mm

The wettest month (with the highest rainfall) is May (293mm).
The driest month (with the least rainfall) is September (23mm).

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Average rainfall days in August
Petit Cayenne, French Guiana

Average rainfall days in August - Petit Cayenne, French Guiana
  • Average rainfall days in August: 19.2 days

The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (11.6 days).

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Average daylight in August /
Average sunshine in August
Petit Cayenne, French Guiana

Average daylight in August / Average sunshine in August - Petit Cayenne, French Guiana
  • Average daylight in August: 12h and 2min

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).

  • Average sunshine in August: 8h and 5min

The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).

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Average sunshine days in August
Petit Cayenne, French Guiana

Average sunshine days in August - Petit Cayenne, French Guiana
  • Average sunshine days in August: 6.8 days

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (0.9 days).

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Average UV index in August
Petit Cayenne, French Guiana

Average UV index in August - Petit Cayenne, French Guiana
  • Average UV index in August: 7

The months with the highest UV index are June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May and December (UV index 6).

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Average cloud cover in August
Petit Cayenne, French Guiana

Average cloud cover in August - Petit Cayenne, French Guiana
  • Average cloud cover in August: 31

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 25).

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Average visibility in August
Petit Cayenne, French Guiana

Average visibility in August - Petit Cayenne, French Guiana
  • Average visibility in August: 10km

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

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Petit Cayenne, French Guiana

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