September weather forecast
Arraiján, Panama

In September, the city of Arraiján experiences a transitional phase in its weather manifestations from a flurry of rain to more stable conditions. A welcoming slash in rainfall from the preceding August figures of 266mm (10.47") to 182mm (7.17") sets the city on a course towards dryer conditions. Seen typically in tropical regions, September continues to display high humidity and moderate wind conditions. While the daylight hours start dropping, they are still relatively long, easing into shorter, cooler days. In effect, September sets the stage for the upcoming shift in weather trends seen in the concluding months of the year.

Temperature

In Arraiján, September's average high-temperature stands at a still warm 28.9°C (84°F), closely related to the preceding month. Arraiján notes a steady average temperature of 24.3°C (75.7°F) during the nights of September.

Heat index

The heat index value for September is appraised at a torrid 36°C (96.8°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In September, the average relative humidity is 85%.

Rainfall

In September, in Arraiján, the rain falls for 28 days. Throughout September, 182mm (7.17") of precipitation is accumulated. Throughout the year, there are 294.6 rainfall days, and 1899mm (74.76") of precipitation is accumulated.

Daylight

The average length of the day in September in Arraiján is 12h and 10min.
On the first day of the month, sunrise is at 06:09 and sunset at 18:26. On the last day of September, sunrise is at 06:07 and sunset at 18:09 EST.

Sunshine

The average sunshine in September in Arraiján is 8.1h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.