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%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
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.
Precipitation
Rainy days
Sunshine hours
Chance of sun
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.
| 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 | ||||