September weather forecastThomas, Haiti

Weather in September

September, the first month of the autumn in Thomas, is still a warm month, with temperature in the range of an average low of 21.3°C (70.3°F) and an average high of 29.8°C (85.6°F).

Temperature

Thomas observes an average high-temperature of a warm 29.8°C (85.6°F) in September, barely different from 30.9°C (87.6°F) in August. The average low-temperature during September nights is an agreeable 21.3°C (70.3°F).

Heat index

The heat index for September is computed to be a fiery hot 36°C (96.8°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for 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 human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Thomas, in September, during 22.4 rainfall days, 135mm (5.31") of precipitation is typically accumulated. Throughout the year, in Thomas, there are 227.4 rainfall days, and 904mm (35.59") of precipitation is accumulated.

Daylight

In September, the average length of the day in Thomas is 12h and 14min.
On the first day of the month, sunrise is at 06:35 and sunset at 19:04. On the last day of September, in Thomas, Haiti, sunrise is at 06:40 and sunset at 18:38 EDT.

Sunshine

The average sunshine in September in Thomas is 9.6h.

UV index

January through May, July through December, with an average maximum UV index of 6, are months with the lowest UV index in Thomas. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.