September weather forecast
Panchimalco, El Salvador

September is a seasonally balanced month in Panchimalco, blending the last trace of rains and the advent of the drier season. Significantly, September is distinguished by temperatures dropping slightly to a range from 21.5°C (70.7°F) to 29.8°C (85.6°F). The weather is indicative of the city's transition phase: from monsoon to the drier weather which lends September its unique character. The abating rains and softening temperature make September the stepping stone for the upcoming drier months. It is notable how significantly the weather in September differs from the summer-soaked August and the impending arrival of the drier October.

Temperature

September's arrival in Panchimalco registers an average high-temperature of a warm 29.8°C (85.6°F), closely aligning with the temperature of the previous month. In Panchimalco, the nighttime temperature averages to a pleasant 21.5°C (70.7°F) during September.

Heat index

September's average heat index is estimated at a fiery hot 38°C (100.4°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

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

Rainfall

In September, in Panchimalco, the rain falls for 26.3 days. Throughout September, 142mm (5.59") of precipitation is accumulated. In Panchimalco, during the entire year, the rain falls for 187 days and collects up to 1106mm (43.54") of precipitation.

Daylight

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

Sunshine

In September, the average sunshine in Panchimalco is 9.3h.

UV index

The months with the lowest UV index are January, May, June, August through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.