September weather forecast
Koriabo, Guyana

September brings a hint of seasonal change, claiming the least cloudy month title as cloud cover drops significantly to 27%. Despite the decrease in rainfall to 92mm (3.62"), the humidity levels remain high, maintaining the moist environment that Koriabo is accustomed to. Encompassing modest variations from August, September's wind hardly goes above 9.1km/h (5.7mph). The reduction of cloud cover means a reasonable amount of sunlight filters through creating an agreeable blend of conditions. The city of Koriabo welcomes the break from heavier rains while appreciating the gentler, slightly sunny days.

Temperature

September, with an average high of 31.5°C (88.7°F) and a low of 24.4°C (75.9°F), signifies the warmest month of the year.

Heat index

The heat index in September is calculated to be an extremely hot 42°C (107.6°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In September, the average relative humidity is 79%.

Rainfall

In September, in Koriabo, the rain falls for 23.4 days. Throughout September, 92mm (3.62") of precipitation is accumulated. Throughout the year, there are 305.1 rainfall days, and 1386mm (54.57") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 05:50 and sunset at 18:06. On the last day of September, in Koriabo, sunrise is at 05:46 and sunset at 17:50 -04.

Sunshine

The average sunshine in September is 10h.

UV index

The months with the highest UV index are March through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.