September weather forecast
San Sebastian Salitrillo, El Salvador

September brings along almost similar conditions as August, with an insignificant drop in average rainfall, documented at 141mm (5.55"), sustaining the city's appeal as a tropical paradise. Consequently, the city basks in a humid, soothing climate with increased sunshine hours highlighting the vibrancy of the flora. Days are typically overcast but filled with enough sunshine to create a pleasant bounce in city life. Notably, September stands as a beacon of the coming changes, paving the way for a recognizable season alteration. Despite the relatively high rainfall, the city of San Sebastian Salitrillo remains an attractive vibrant green haven.

Temperature

September reports an average high-temperature of a moderately hot 29.3°C (84.7°F), slightly varied from August's 30°C (86°F). San Sebastian Salitrillo in September experiences a low-temperature average of 18.9°C (66°F).

Heat index

The heat index value for September is evaluated at a fiery hot 37°C (98.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 primarily vital for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In San Sebastian Salitrillo, El Salvador, the average relative humidity in September is 85%.

Rainfall

In San Sebastian Salitrillo, during September, the rain falls for 24.7 days and regularly aggregates up to 141mm (5.55") of precipitation. Throughout the year, there are 181.4 rainfall days, and 1055mm (41.54") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of the month, sunrise is at 05:46 and sunset at 18:09. On the last day of September, in San Sebastian Salitrillo, sunrise is at 05:47 and sunset at 17:48 CST.

Sunshine

The average sunshine in September is 7.8h.

UV index

The month with the lowest UV index is September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 5 in September translates into these instructions:
Exercise prevention - Precautions against solar damage are endorsed. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.