May weather forecast
Maripasoula, French Guiana

The last month of the spring, May, is another warm month in Maripasoula, French Guiana, with temperature in the range of an average low of 21.9°C (71.4°F) and an average high of 29.8°C (85.6°F).

Temperature

In May, the average high-temperature remains equal as in April - a still warm 29.8°C (85.6°F). The average low-temperature, in Maripasoula, is 21.9°C (71.4°F).

Heat index

The average heat index in May is estimated at an extremely hot 40°C (104°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like metabolic differences, pregnancy, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

With an average relative humidity of 90%, May is the most humid month in Maripasoula.

Rainfall

May is the month with the most rainfall. Rain falls for 25.9 days and accumulates 192mm (7.56") of precipitation.

Daylight

In Maripasoula, the average length of the day in May is 12h and 17min.
On the first day of the month, sunrise is at 06:25 and sunset at 18:40. On the last day of May, in Maripasoula, sunrise is at 06:24 and sunset at 18:43 -03.

Sunshine

The average sunshine in May in Maripasoula is 5.1h.

UV index

In Maripasoula, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 6 in May transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.