September Weather in Marco Island

Last updated: March 2, 2024

The weather in Marco Island, United States, during September is characterized by an average temperature of 28°C (82°F). Highs can soar to 33°C (91°F), while lows may dip to 24°C (76°F). Typically, the humidity level in Marco Island throughout September hovers around 76%.

24°C (76°F)

Minimum temperature

28°C (82°F)

Average temperature

33°C (91°F)

Maximum temperature

76%

Humidity

Precipitation and Sunshine hours

In September, Marco Island averages 171 mm (6.7 inches) of rainfall, typically over the course of 20 rainy days. The month enjoys an average of 12 hours 15 minutes of daylight, with the sun shining for approximately 10 hours 26 minutes each day. Additionally, there is a 33% probability of sunny days during this period.

171 mm (6.7 inches)

Precipitation

20 rainy days

Rainy days

10 hours 26 minutes

Sunshine hours

33%

Chance of sun

UV Index

In September, the UV Index in Marco Island reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 0 1 2 4 7 10 11 11 9 6 3 1 1
Exposure Low Moderate High VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 10 min 15 min 25 min 30 min 45 min

Compare Marco Island's Climate with Cities Worldwide