Last updated: June 24, 2025
In September, the average temperature in Indian River, United States hovers around 16°C (61°F). During this time, temperatures can dip as low as 0°C (33°F) and soar up to 34°C (93°F). This month experiences 84 mm (3.3 in) of precipitation spread across 11 days, contributing to an average humidity level of 79%. Stay prepared for a mix of weather!
In September in Indian River, the average temperature is 16°C (61°F). Maximums can reach 34°C (93°F) and minimums can be as low as 0°C (33°F). Be prepared for a range of temperatures, making it ideal for travelers looking to experience both warm days and cooler evenings.
In Indian River, in September, the precipitation amount is 84 mm (3.3 in) during a period of 11 days.
In Indian River in September humidity is 79%. With an average temperature of 16°C (61°F), this humidity feels like a warm, moist embrace, making travel a bit more challenging as the air tends to weigh heavily, but it also offers a refreshing atmosphere perfect for exploring local sights and enjoying nature.
In Indian River in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Indian River.
UV Risk Categories
Weather in Indian River varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Indian River, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 48 mm (1.9 inches) | 92% | low |
| February Weather | -6°C (21°F) | 60 mm (2.4 inches) | 91% | moderate |
| March Weather | -2°C (29°F) | 58 mm (2.3 inches) | 87% | moderate |
| April Weather | 4°C (40°F) | 94 mm (3.7 inches) | 85% | high |
| May Weather | 12°C (54°F) | 95 mm (3.8 inches) | 79% | very high |
| June Weather | 18°C (65°F) | 101 mm (4.0 inches) | 75% | very high |
| July Weather | 21°C (71°F) | 89 mm (3.5 inches) | 75% | very high |
| August Weather | 20°C (68°F) | 95 mm (3.8 inches) | 75% | very high |
| September Weather | 16°C (61°F) | 84 mm (3.3 inches) | 79% | high |
| October Weather | 9°C (49°F) | 135 mm (5.3 inches) | 85% | moderate |
| November Weather | 2°C (36°F) | 71 mm (2.8 inches) | 88% | moderate |
| December Weather | -3°C (27°F) | 69 mm (2.7 inches) | 89% | low |