September falls squarely within Panama’s rainy season, also known as its “green season.” This period is characterized by high humidity, frequent rainfall, and cloud cover. While temperatures remain warm, typically ranging from the mid-70s to the high 80s Fahrenheit (mid-20s to low 30s Celsius), the elevated humidity can make it feel hotter. Rainfall is often heaviest in the afternoons and evenings, with mornings tending to be clearer. This pattern can vary, however, with some days experiencing extended periods of rain or sunshine.
Understanding the climatic conditions prevalent during this month is crucial for travelers and residents alike. The abundance of rain contributes to the lush, vibrant landscapes that define Panama’s natural beauty. This period also offers potential cost savings on travel and accommodations due to it being considered the off-season. Historically, this period of increased rainfall has played a vital role in supporting Panama’s agricultural sector and maintaining the water levels necessary for the Panama Canal’s operation.