July weather forecast
Grand-Santi, French Guiana

The month of July ushers in a warm trend, with clearer climatic conditions noted in Grand-Santi, French Guiana. Adapting to drier weather conditions, this month records considerable reductions in rainfall, aiding in merriment. Slight variations in pressure, at 1012.9mb, prompt no significant changes in the overall climatic conditions. The residents a marked increase in UV index levels, standing at 7, signaling the provision for protective measures. The distinct feature of July is the increased sunshine duration, which climbs to 7.9 hours per day, awarding more opportunities for outdoor leisure.

Temperature

The onset of July brings with it an average high-temperature of a still hot 31.3°C (88.3°F), showing a negligible variation from the month before. Nightly temperatures in Grand-Santi, French Guiana, drop to an average low of 21.1°C (70°F) in July.

Heat index

The heat index for July is calculated to be a blistering 44°C (111.2°F). Eyes open: Heat cramps and heat exhaustion are expected. Prolonged exertion could lead to heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. 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

The average relative humidity in July in Grand-Santi is 85%.

Rainfall

In Grand-Santi, in July, it is raining for 19.8 days, with typically 62mm (2.44") of accumulated precipitation. Throughout the year, there are 259.6 rainfall days, and 915mm (36.02") of precipitation is accumulated.

Daylight

In July, the average length of the day in Grand-Santi is 12h and 20min.
On the first day of the month, sunrise is at 06:30 and sunset at 18:52. On the last day of July, in Grand-Santi, sunrise is at 06:34 and sunset at 18:53 -03.

Sunshine

In Grand-Santi, the average sunshine in July is 7.9h.

UV index

The months with the highest UV index in Grand-Santi, French Guiana, are July through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 7 in July, converts into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.