July weather forecast
Médeyre, French Guiana

July is a hot summer month in Médeyre, French Guiana, with an average temperature ranging between max 30.6°C (87.1°F) and min 22.2°C (72°F).

Temperature

Médeyre's average high-temperature in July sits at a hot 30.6°C (87.1°F), showing little difference from the previous month. The temperature lowers to an average of 22.2°C (72°F) during July nights.

Heat index

For most parts of July, the heat index is computed to be a scorching 42°C (107.6°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important 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 human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In July, the average relative humidity in Médeyre is 86%.

Rainfall

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

Daylight

The average length of the day in July is 12h and 25min.
On the first day of the month, sunrise is at 06:25 and sunset at 18:51. On the last day of July, in Médeyre, sunrise is at 06:30 and sunset at 18:51 -03.

Sunshine

In Médeyre, French Guiana, the average sunshine in July 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 of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In July, a daily maximum UV index of 7 leads to the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.