September weather forecast
Tecoluca, El Salvador

The first month of the autumn, September, is still a hot month in Tecoluca, El Salvador, with an average temperature varying between 30.9°C (87.6°F) and 20.5°C (68.9°F).

Temperature

With September's arrival, Tecoluca notes an average high-temperature of a still hot 30.9°C (87.6°F), closely following the trend of the preceding month. In Tecoluca, the September nights cool down to an average low of 20.5°C (68.9°F).

Heat index

For September, the heat index is calculated to be a blistering 41°C (105.8°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In September, the average relative humidity in Tecoluca is 82%.

Rainfall

In Tecoluca, during September, the rain falls for 27.5 days and regularly aggregates up to 134mm (5.28") of precipitation. Throughout the year, in Tecoluca, there are 192.2 rainfall days, and 1062mm (41.81") of precipitation is accumulated.

Daylight

In Tecoluca, the average length of the day in September is 12h and 12min.
On the first day of September, sunrise is at 05:44 and sunset at 18:07. On the last day of the month, sunrise is at 05:45 and sunset at 17:46 CST.

Sunshine

In Tecoluca, the average sunshine in September is 8.8h.

UV index

The months with the lowest UV index in Tecoluca are January, June through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.