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

Shifting into September, La Palma records an average high-temperature of a warm 29.2°C (84.6°F), presenting minor fluctuations compared to the previous month. La Palma observes an average nighttime low-temperature of 19°C (66.2°F) during the month of September.

Heat index

In September, the average heat index is evaluated at a sweltering 36°C (96.8°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

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. Throughout the year, there are 181.9 rainfall days, and 1094mm (43.07") of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in September is 7.6h.

UV index

The month with the lowest UV index is September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 5 during September translates into the following guidance:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.