July weather forecastGrigel, French Guiana
July
Weather in July
July, the same as June, in Grigel, French Guiana, is another hot summer month, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 31.1°C (88°F).Temperature
Grigel indicates an average high-temperature of a still tropical 31.1°C (88°F) in July, showing minor variation from June's 30.3°C (86.5°F). During July in Grigel, the average low-temperature is recorded at an agreeable 20.8°C (69.4°F).Heat index
The heat index for July is computed to be a blisteringly hot 43°C (109.4°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.Be aware that heat index ratings are designed for shaded locations and minor breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. 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.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In Grigel, the average relative humidity in July is 85%.Rainfall
In Grigel, in July, it is raining for 24.6 days, with typically 97mm (3.82") of accumulated precipitation. Throughout the year, in Grigel, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.Daylight
In July, the average length of the day in Grigel is 12h and 17min.On the first day of the month, sunrise is at 06:29 and sunset at 18:47. On the last day of July, sunrise is at 06:33 and sunset at 18:48 -03.
Sunshine
In July, the average sunshine 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 threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 6 during July translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Grigel, French Guiana
- Average high temperature in July: 31.1°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 July: 20.8°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 July
Grigel, French Guiana
- Average pressure in July: 1013mbar
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 July
Grigel, French Guiana
- Average wind speed in July: 4.2km/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 July
Grigel, French Guiana
- Average humidity in July: 85%
The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
Grigel, French Guiana
- Average rainfall in July: 97mm
The wettest month (with the highest rainfall) is May (192mm).
The driest month (with the least rainfall) is October (21mm).
Average rainfall days in July
Grigel, French Guiana
- Average rainfall days in July: 24.6 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 July /
Average sunshine in July
Grigel, French Guiana
- Average daylight in July: 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 July: 7h and 30min
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 July
Grigel, French Guiana
- Average sunshine days in July: 4.3 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 July
Grigel, French Guiana
- Average UV index in July: 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 July
Grigel, French Guiana
- Average cloud cover in July: 63
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 July
Grigel, French Guiana
- Average visibility in July: 6km
The month with the highest visibility is October (8km).
The month with the lowest visibility is May (5km).





