September weather forecast
Tecapán, El Salvador

September, the first month of the autumn in Tecapán, is still a tropical month, with an average temperature ranging between min 22.9°C (73.2°F) and max 30.2°C (86.4°F).

Temperature

In September, Tecapán notes an average high-temperature of a still hot 30.2°C (86.4°F), hardly different from the preceding month. Tecapán, during the month of September, experiences an average low-temperature of 22.9°C (73.2°F).

Heat index

The heat index for September is evaluated at a fiery hot 39°C (102.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity is 82%.

Rainfall

In Tecapán, in September, it is raining for 27.5 days, with typically 182mm (7.17") of accumulated precipitation. Throughout the year, in Tecapán, there are 206.2 rainfall days, and 1242mm (48.9") of precipitation is accumulated.

Daylight

In September, the average length of the day in Tecapán is 12h and 12min.
On the first day of September, sunrise is at 05:42 and sunset at 18:04. On the last day of the month, sunrise is at 05:43 and sunset at 17:44 CST.

Sunshine

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

UV index

January through September and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 7 during September leads to these advisories:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. 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. Experience reduced UV exposure by about half when donning a wide-brim hat.