September weather forecast
Tepecoyo, El Salvador

September replicates the rainy season patterns of its preceding months. Cloudy skies and constant drizzles define this month's weather in Tepecoyo. A minor dip in temperature and a noticeable increase in humidity bears testimony to these continuing conditions. Despite these changes, daylight hours remain almost consistent with August, permitting ample time for daily activities. Although rainfall remains substantial with an average amount of 142mm (5.59") over 26.3 days, it marginally lessens from August.

Temperature

With September's arrival, Tepecoyo notes an average high-temperature of a warm 29.8°C (85.6°F), closely following the trend of the preceding month. September brings Tepecoyo a consistent average low-temperature of 21.5°C (70.7°F).

Heat index

The heat index value during September is calculated to be a very hot 38°C (100.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The months with the highest humidity are September and October, with an average relative humidity of 82%.

Rainfall

In Tepecoyo, during September, the rain falls for 26.3 days and regularly aggregates up to 142mm (5.59") of precipitation. In Tepecoyo, during the entire year, the rain falls for 187 days and collects up to 1106mm (43.54") of precipitation.

Daylight

The average length of the day in September in Tepecoyo is 12h and 12min.
On the first day of the month, sunrise is at 05:46 and sunset at 18:08. On the last day of September, sunrise is at 05:47 and sunset at 17:47 CST.

Sunshine

In September, the average sunshine is 9.3h.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.