July weather forecast
Opoya, French Guiana

July, the same as June, in Opoya, French Guiana, is a hot summer month, with an average temperature fluctuating between 20.8°C (69.4°F) and 31.1°C (88°F).

Temperature

July's advent denotes a minor fluctuation in the average high-temperature to a still tropical 31.1°C (88°F) from June's 30.3°C (86.5°F). Opoya's nights in July cool down to an average low-temperature of 20.8°C (69.4°F).

Heat index

The heat index value during July is evaluated at a blistering 43°C (109.4°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in July in Opoya, French Guiana, is 85%.

Rainfall

In July, the rain falls for 24.6 days. Throughout July, 97mm (3.82") of precipitation is accumulated. Throughout the year, in Opoya, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.

Daylight

The average length of the day in July is 12h and 18min.
On the first day of the month, sunrise is at 06:30 and sunset at 18:49. On the last day of July, in Opoya, sunrise is at 06:34 and sunset at 18:50 -03.

Sunshine

In Opoya, the average sunshine in July is 7.5h.

UV index

In July, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 6 in July translates into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.