May weather forecastGrigel, French Guiana
May
Weather in May
May, the last month of the spring in Grigel, is another warm month, with an average temperature fluctuating between 29.8°C (85.6°F) and 21.9°C (71.4°F).Temperature
The presence of May is marked by an average high temperature of a still warm 29.8°C (85.6°F), reflecting April's climate closely. An average low-temperature of 21.9°C (71.4°F) is anticipated throughout the nights in Grigel, French Guiana, during May.Heat index
May's heat index is computed to be a scorching 40°C (104°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.Note that heat index values are valued for light wind and location in the shade. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
With an average relative humidity of 90%, May is the most humid month in Grigel.Rainfall
May is the month with the most rainfall. Rain falls for 25.9 days and accumulates 192mm (7.56") of precipitation.Daylight
In Grigel, the average length of the day in May is 12h and 16min.On the first day of May in Grigel, French Guiana, sunrise is at 06:24 and sunset at 18:38. On the last day of the month, sunrise is at 06:23 and sunset at 18:41 -03.
Sunshine
In Grigel, the average sunshine in May is 5.1h.UV index
The average daily maximum UV index in May in Grigel is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Grigel, French Guiana
- Average high temperature in May: 29.8°C
The warmest month (with the highest average high temperature) is October (34.9°C).
The month with the lowest average high temperature is February (29.3°C).
- Average low temperature in May: 21.9°C
The month with the highest average low temperature is May (21.9°C).
The coldest months (with the lowest average low temperature) are August and September (20.5°C).
Average pressure in May
Grigel, French Guiana
- Average pressure in May: 1012.2mbar
The months with the highest atmospheric pressure are June and July (1013mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in May
Grigel, French Guiana
- Average wind speed in May: 4.5km/h
The windiest months (with the highest average wind speed) are February, March and November (5.3km/h).
The calmest month (with the lowest average wind speed) is July (4.2km/h).
Average humidity in May
Grigel, French Guiana
- Average humidity in May: 90%
The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Grigel, French Guiana
- Average rainfall in May: 192mm
The wettest month (with the highest rainfall) is May (192mm).
The driest month (with the least rainfall) is October (21mm).
Average rainfall days in May
Grigel, French Guiana
- Average rainfall days in May: 25.9 days
The months with the highest number of rainy days are January and March (26.8 days).
The month with the least rainy days is October (10.4 days).
Average daylight in May /
Average sunshine in May
Grigel, French Guiana
- Average daylight in May: 12h and 18min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in May: 5h and 6min
The months with the most sunshine are September and October (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in May
Grigel, French Guiana
- Average sunshine days in May: 3.4 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is February (1.8 days).
Average UV index in May
Grigel, French Guiana
- Average UV index in May: 6
The months with the highest UV index are August, September, October and November (UV index 7).
The months with the lowest UV index are January, March and December (UV index 5).
Average cloud cover in May
Grigel, French Guiana
- Average cloud cover in May: 77
The month with the most cloud cover is February (Cloud cover 81).
The month with the least cloud cover is October (Cloud cover 44).
Average visibility in May
Grigel, French Guiana
- Average visibility in May: 5km
The month with the highest visibility is October (8km).
The month with the lowest visibility is May (5km).
