July weather forecast
Polémie, French Guiana

July in Polémie, French Guiana, is a tropical summer month, with temperature in the range of an average high of 30.6°C (87.1°F) and an average low of 22.2°C (72°F).

Temperature

The arrival of July brings an average high-temperature of a tropical 30.6°C (87.1°F), nearly identical to June's 29.5°C (85.1°F). Polémie's nighttime temperature during July is consistently averaged at a pleasant 22.2°C (72°F).

Heat index

The heat index value during July is calculated to be an extremely hot 42°C (107.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In July, the average relative humidity is 86%.

Rainfall

In Polémie, in July, during 24.5 rainfall days, 107mm (4.21") of precipitation is typically accumulated. Throughout the year, there are 253 rainfall days, and 878mm (34.57") of precipitation is accumulated.

Daylight

In Polémie, the average length of the day in July is 12h and 23min.
On the first day of the month, sunrise is at 06:27 and sunset at 18:51. On the last day of July, sunrise is at 06:31 and sunset at 18:51 -03.

Sunshine

The average sunshine in July in Polémie is 8h.

UV index

The months with the highest UV index are July through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 7 in July translates into this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.