October weather forecast
Petit Cayenne, French Guiana

October

Weather in October

October, the same as September, in Petit Cayenne, French Guiana, is another hot autumn month, with an average temperature varying between 31.6°C (88.9°F) and 24.8°C (76.6°F).

Temperature

Temperature records mark October as the warmest month, with highs averaging 31.6°C (88.9°F) and lows at 24.8°C (76.6°F).

Heat index

For October, the heat index is evaluated at a scorching 41°C (105.8°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. 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 quite important for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

September and October, with an average relative humidity of 76%, are the least humid months in Petit Cayenne, French Guiana.

Rainfall

In October, in Petit Cayenne, the rain falls for 11.6 days. Throughout October, 26mm (1.02") 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

The average length of the day in October is 12h and 1min.
On the first day of the month, sunrise is at 06:16 and sunset at 18:21. On the last day of October, in Petit Cayenne, sunrise is at 06:14 and sunset at 18:11 -03.

Sunshine

In October, the average sunshine in Petit Cayenne is 9.1h.

UV index

June through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 7 in October, converts into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

What are the warmest months in Petit Cayenne?
Temperature records in Petit Cayenne mark October as the warmest month, with highs averaging 31.6°C (88.9°F) and lows at 24.8°C (76.6°F).
How hot is October in Petit Cayenne?
October temperatures vary between a high-temperature of 31.6°C (88.9°F) and a low-temperature of 24.8°C (76.6°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in October is evaluated at 41°C (105.8°F).
What are the least humid months in Petit Cayenne?
The months with the lowest humidity in Petit Cayenne are September and October, with an average relative humidity of 76%.
What is the average humidity in October in Petit Cayenne?
In October, the average relative humidity in Petit Cayenne, French Guiana, is 76%.
How many days does it rain in October in Petit Cayenne?
In October, in Petit Cayenne, French Guiana, the rain falls for 11.6 days. Throughout October, 26mm (1.02") of precipitation is accumulated.
How many hours of daylight does Petit Cayenne have in October?
In Petit Cayenne, the average day length in October is 12h and 1min.
What time are sunrise and sunset in October in Petit Cayenne?
On the first day of October in Petit Cayenne, French Guiana, sunrise is at 06:16 and sunset at 18:21. On the last day of the month, sunrise is at 06:14 and sunset at 18:11 -03.
How many hours of sunshine does Petit Cayenne have in October?
The average sunshine duration in October in Petit Cayenne, French Guiana, is 9.1h.
What is the month with 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, French Guiana.
How high is the UV index in October in Petit Cayenne?
In Petit Cayenne, the average daily maximum UV index in October is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in October - Petit Cayenne, French Guiana
Average temperature in October
Petit Cayenne, French Guiana
  • Average high temperature in October: 31.6°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 October: 24.8°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).

Average pressure in October - Petit Cayenne, French Guiana
Average pressure in October
Petit Cayenne, French Guiana
  • Average pressure in October: 1010.6mbar

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

Average wind speed in October - Petit Cayenne, French Guiana
Average wind speed in October
Petit Cayenne, French Guiana
  • Average wind speed in October: 11.1km/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).

Average humidity in October - Petit Cayenne, French Guiana
Average humidity in October
Petit Cayenne, French Guiana
  • Average humidity in October: 76%

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

Average rainfall in October - Petit Cayenne, French Guiana
Average rainfall in October
Petit Cayenne, French Guiana
  • Average rainfall in October: 26mm

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

Average rainfall days in October - Petit Cayenne, French Guiana
Average rainfall days in October
Petit Cayenne, French Guiana
  • Average rainfall days in October: 11.6 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).

Average daylight in October / Average sunshine in October - Petit Cayenne, French Guiana
Average daylight in October /
Average sunshine in October
Petit Cayenne, French Guiana
  • Average daylight in October: 12h and 0min

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 October: 9h and 1min

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).

Average sunshine days in October - Petit Cayenne, French Guiana
Average sunshine days in October
Petit Cayenne, French Guiana
  • Average sunshine days in October: 16.5 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).

Average UV index in October - Petit Cayenne, French Guiana
Average UV index in October
Petit Cayenne, French Guiana
  • Average UV index in October: 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).

Average cloud cover in October - Petit Cayenne, French Guiana
Average cloud cover in October
Petit Cayenne, French Guiana
  • Average cloud cover in October: 28

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

Average visibility in October - Petit Cayenne, French Guiana
Average visibility in October
Petit Cayenne, French Guiana
  • Average visibility in October: 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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