September weather forecast
Santiago, Panama

September, the first month of the autumn in Santiago, is also a moderately hot month, with an average temperature fluctuating between 22.4°C (72.3°F) and 29.8°C (85.6°F).

Temperature

September welcomes an average high-temperature of a still moderately hot 29.8°C (85.6°F), not much different from the preceding month. In the month of September, the average low-temperature usually rests at a pleasant 22.4°C (72.3°F).

Heat index

The heat index in September is calculated to be a very hot 39°C (102.2°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The months with the highest humidity in Santiago are July through October, with an average relative humidity of 88%.

Rainfall

In September, the rain falls for 29.5 days. Throughout September, 262mm (10.31") of precipitation is accumulated. Throughout the year, in Santiago, there are 269.3 rainfall days, and 2235mm (87.99") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 06:15 and sunset at 18:31. On the last day of September, sunrise is at 06:12 and sunset at 18:15 EST.

Sunshine

In Santiago, Panama, the average sunshine in September is 7.4h.

UV index

January through June and September, with an average maximum UV index of 7, are months with the highest UV index in Santiago. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.