September weather forecast
Smythfield, Guyana

The first month of the autumn, September, is still a tropical month in Smythfield, Guyana, with an average temperature ranging between max 30.8°C (87.4°F) and min 25.9°C (78.6°F).

Temperature

September, having an average high-temperature of 30.8°C (87.4°F) and an average low-temperature of 25.9°C (78.6°F), is the warmest month.

Heat index

Throughout September, the heat index is estimated at a fiery hot 39°C (102.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

With an average relative humidity of 76%, September is the least humid month in Smythfield, Guyana.

Rainfall

In Smythfield, during September, the rain falls for 24.5 days and regularly aggregates up to 141mm (5.55") of precipitation. Throughout the year, in Smythfield, Guyana, there are 312.6 rainfall days, and 2298mm (90.47") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 9min.
On the first day of the month, sunrise is at 05:42 and sunset at 17:56. On the last day of September, sunrise is at 05:37 and sunset at 17:41 -04.

Sunshine

The month with the most sunshine in Smythfield is September, with an average of 9.3h of sunshine.

UV index

January, February, April, June through December, with an average maximum UV index of 7, are months with the highest UV index in Smythfield. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. 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. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.