October weather forecast
Maripasoula, French Guiana

As October rolls in, indications of the approaching wet season start to appear. Even as the highest temperature of the year is registered at 34.9°C (94.8°F), extended sunshine persists. Rainfall remains marginally low at 21mm (0.83"), creating the last stretch of the dry period. A slight increase in wind speed leads to a refreshing relief from the heat. With thinning clouds and steadily increasing atmospheric pressure, October holds its ground as the tail end of the warm, sunny phase.

Temperature

October is Maripasoula's warmest month, registering average high temperatures of 34.9°C (94.8°F) and lows of 20.8°C (69.4°F).

Heat index

The heat index for October is calculated to be a life-threatening hot 51°C (123.8°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
In terms of the heat index, values are set with light wind and shade conditions in mind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. 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 72%, October is the least humid month.

Rainfall

October is the month with the least rainfall in Maripasoula, French Guiana. Rain falls for 10.4 days and accumulates 21mm (0.83") of precipitation.

Daylight

In Maripasoula, French Guiana, the average length of the day in October is 12h and 2min.
On the first day of the month, sunrise is at 06:23 and sunset at 18:28. On the last day of October, in Maripasoula, sunrise is at 06:19 and sunset at 18:19 -03.

Sunshine

September and October, with an average of 8.8h of sunshine, are months with the most sunshine.

UV index

August through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 7 during October leads to these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.