Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
During September and October, Mont Valérien experiences its highest average temperatures, peaking at 30.9°C (87.6°F).Heat index
For most parts of October, the heat index is computed to be a blistering 40°C (104°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Note that heat index values are valued for light wind and location in the shade. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
September and October, with an average relative humidity of 77%, are the least humid months in Mont Valérien.Rainfall
In Mont Valérien, in October, during 14.3 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Mont Valérien, during the entire year, the rain falls for 288 days and collects up to 1773mm (69.8") of precipitation.Daylight
The average length of the day in October is 12h and 1min.On the first day of October, sunrise is at 06:19 and sunset at 18:23. On the last day of the month, sunrise is at 06:17 and sunset at 18:14 -03.
Sunshine
In Mont Valérien, the average sunshine in October is 9.2h.UV index
July through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 7 in October transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. 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. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What are the warmest months in Mont Valérien?
How hot is October in Mont Valérien?
What is the least humid month in Mont Valérien?
What is the average humidity in October in Mont Valérien?
How much does it rain in Mont Valérien in October?
How many hours of daylight does Mont Valérien have in October?
When are sunrise and sunset in October in Mont Valérien?
How long on average sun shines in October in Mont Valérien?
When is the highest UV index in Mont Valérien?
What is the UV index intensity in October in Mont Valérien?
Average temperature in October
Mont Valérien, French Guiana
- Average high temperature in October: 30.9°C
The warmest months (with the highest average high temperature) are September and October (30.9°C).
The month with the lowest average high temperature is February (27.5°C).
- Average low temperature in October: 25°C
The month with the highest average low temperature is November (25.1°C).
The coldest month (with the lowest average low temperature) is January (24.2°C).
Average pressure in October
Mont Valérien, French Guiana
- Average pressure in October: 1010.6mbar
The months with the highest atmospheric pressure are June and July (1013.1mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).
Average wind speed in October
Mont Valérien, French Guiana
- Average wind speed in October: 12.6km/h
The windiest month (with the highest average wind speed) is February (15.3km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).
Average humidity in October
Mont Valérien, French Guiana
- Average humidity in October: 77%
The months with the highest relative humidity are February and May (84%).
The months with the lowest relative humidity are September and October (77%).
Average rainfall in October
Mont Valérien, French Guiana
- Average rainfall in October: 33mm
The wettest month (with the highest rainfall) is May (279mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days in October
Mont Valérien, French Guiana
- Average rainfall days in October: 14.3 days
The month with the highest number of rainy days is May (29.6 days).
The months with the least rainy days are September and October (14.3 days).
Average daylight in October /
Average sunshine in October
Mont Valérien, 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 18min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in October
Mont Valérien, French Guiana
- Average sunshine days in October: 13.2 days
The month with the most sunshine days is October (13.2 days).
The month with the least sunshine days is May (0.6 days).
Average UV index in October
Mont Valérien, French Guiana
- Average UV index in October: 7
The months with the highest UV index are July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June and December (UV index 6).
Average cloud cover in October
Mont Valérien, French Guiana
- Average cloud cover in October: 29
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in October
Mont Valérien, French Guiana
- Average visibility in October: 10km
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
Mont Valérien, French Guiana
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