September weather forecast
La Palma, El Salvador

September emerges as the month with the lowest visibility at 6km (3.7mi). The La Palma weather in September experiences reduced visibility due to consistent rain and thick clouds. Appreciate the charm of the misty landscapes and the ethereal beauty of the foggy vistas. It's a great month to indulge in strategic, climate-friendly indoor activities. Be wary of the UV index of 5, and use ample sunblock.

Temperature

An average high-temperature of a moderately hot 29.2°C (84.6°F) marks September, exhibiting a close resemblance to the conditions in August. La Palma records an average low of 19°C (66.2°F) throughout the nights in September.

Heat index

September's average heat index is evaluated at a sweltering 36°C (96.8°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In La Palma, the average relative humidity in September is 85%.

Rainfall

In La Palma, in September, it is raining for 25.2 days, with typically 180mm (7.09") of accumulated precipitation. In La Palma, El Salvador, during the entire year, the rain falls for 181.9 days and collects up to 1094mm (43.07") of precipitation.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September, sunrise is at 05:44 and sunset at 18:08. On the last day of the month, sunrise is at 05:46 and sunset at 17:46 CST.

Sunshine

In La Palma, the average sunshine in September is 7.6h.

UV index

September is the month with the lowest UV index in La Palma, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.