May weather forecastSimon, French Guiana
May
Weather in May
The last month of the spring, May, is another warm month in Simon, French Guiana, with temperature in the range of an average high of 28.6°C (83.5°F) and an average low of 24.7°C (76.5°F).Temperature
Simon measures an average high-temperature of a still moderately hot 28.6°C (83.5°F) in May, nearly consistent with the preceding month. During May, Simon's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a still warm 24.7°C (76.5°F).Heat index
May's average heat index is computed to be a torrid 35°C (95°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.Take into consideration that the heat index values are calculated for 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', is a numerical representation of warmth when taking temperature and moisture levels into account. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital 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.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
May is the most humid month, with an average relative humidity of 86%.Rainfall
The month with the most rainfall is May, when the rain falls for 28.9 days and typically aggregates up to 293mm (11.54") of precipitation.Daylight
The average length of the day in May in Simon is 12h and 20min.On the first day of May in Simon, sunrise is at 06:19 and sunset at 18:36. On the last day of the month, sunrise is at 06:17 and sunset at 18:39 -03.
Sunshine
In Simon, the average sunshine in May is 6.9h.UV index
The months with the lowest UV index are January through May and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In May, a daily UV index of 6 turns into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Simon, French Guiana
- Average high temperature in May: 28.6°C
The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (27.7°C).
- Average low temperature in May: 24.7°C
The months with the highest average low temperature are October and November (24.8°C).
The coldest months (with the lowest average low temperature) are June and July (23.8°C).
Average pressure in May
Simon, French Guiana
- Average pressure in May: 1012.3mbar
The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in May
Simon, French Guiana
- Average wind speed in May: 10.5km/h
The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is July (8.3km/h).
Average humidity in May
Simon, French Guiana
- Average humidity in May: 86%
The month with the highest relative humidity is May (86%).
The months with the lowest relative humidity are September and October (76%).
Average rainfall in May
Simon, French Guiana
- Average rainfall in May: 293mm
The wettest month (with the highest rainfall) is May (293mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in May
Simon, French Guiana
- Average rainfall days in May: 28.9 days
The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (11.6 days).
Average daylight in May /
Average sunshine in May
Simon, French Guiana
- Average daylight in May: 12h and 18min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in May: 6h and 54min
The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in May
Simon, French Guiana
- Average sunshine days in May: 1.1 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (0.9 days).
Average UV index in May
Simon, French Guiana
- Average UV index in May: 6
The months with the highest UV index are June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May and December (UV index 6).
Average cloud cover in May
Simon, French Guiana
- Average cloud cover in May: 52
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in May
Simon, French Guiana
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, August, September, October and November (10km).
The months with the lowest visibility are April, May, June, July and December (9km).





