August weather forecast
La Grève, French Guiana

The last month of the summer, August, is another tropical month in La Grève, French Guiana, with an average temperature fluctuating between 20.5°C (68.9°F) and 32.8°C (91°F).

Temperature

August is marked by an average high-temperature of a still tropical 32.8°C (91°F), almost identical to the preceding month. La Grève's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 20.5°C (68.9°F) in August.

Heat index

For August, the heat index is appraised at a life-threatening hot 47°C (116.6°F). Be careful: Heat exhaustion and heat cramps are probable. Heatstroke may result from extended activity.
In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In La Grève, the average relative humidity in August is 79%.

Rainfall

In La Grève, during August, the rain falls for 18.8 days and regularly aggregates up to 76mm (2.99") of precipitation. Throughout the year, in La Grève, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.

Daylight

The average length of the day in August in La Grève is 12h and 14min.
On the first day of August, sunrise is at 06:32 and sunset at 18:49. On the last day of the month, sunrise is at 06:29 and sunset at 18:40 -03.

Sunshine

The average sunshine in August is 8.6h.

UV index

The months with the highest UV index in La Grève, French Guiana, are August through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 in August converts into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.