May weather forecastFlèche, French Guiana

Weather in May

The last month of the spring, May, is another warm month in Flèche, French Guiana, with an average temperature fluctuating between 23.3°C (73.9°F) and 29.5°C (85.1°F).

Temperature

The transition into May marks the average high-temperature at a still warm 29.5°C (85.1°F), differing minimally from April's 29.7°C (85.5°F). During May, Flèche experiences an average low-temperature of 23.3°C (73.9°F) at night.

Heat index

May's mean heat index is appraised at a torrid 38°C (100.4°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
For clarity, heat index numbers account for light winds and areas under shade. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In May, the average relative humidity is 86%.

Rainfall

The month with the most rainfall is May, when the rain falls for 28 days and typically aggregates up to 137mm (5.39") of precipitation.

Daylight

In Flèche, the average length of the day in May is 12h and 23min.
On the first day of May in Flèche, French Guiana, sunrise is at 06:21 and sunset at 18:40. On the last day of the month, sunrise is at 06:18 and sunset at 18:44 -03.

Sunshine

The average sunshine in May in Flèche is 5.9h.

UV index

The months with the lowest UV index in Flèche are January through June and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In May, an average UV index of 6 transforms into the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.