Last updated: June 24, 2025
In September, the average temperature in Sylvan Beach, United States hovers around 18°C (64°F). Expect a range that dips to a cool 4°C (40°F) and can soar up to a warm 32°C (90°F). During this month, you'll typically experience 84 mm (3.3 in) of precipitation over 9 days. With an average humidity of 78%, get ready for a refreshing yet mild atmosphere!
In September in Sylvan Beach, the average temperature is 18°C (64°F). Maximums can reach 32°C (90°F), and minimums can be as low as 4°C (40°F). This makes it an ideal time for travelers to enjoy a mix of warm and cooler weather, perfect for various outdoor activities.
In Sylvan Beach in September, the precipitation amount is 84 mm (3.3 in) spread over 9 days.
In Sylvan Beach in September, humidity is 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.
In Sylvan Beach in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sylvan Beach.
UV Risk Categories
Weather in Sylvan Beach varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sylvan Beach, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 71 mm (2.8 inches) | 90% | moderate |
| February Weather | -2°C (28°F) | 82 mm (3.2 inches) | 90% | moderate |
| March Weather | 1°C (35°F) | 76 mm (3.0 inches) | 87% | high |
| April Weather | 7°C (46°F) | 111 mm (4.4 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 119 mm (4.7 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 95 mm (3.7 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 139 mm (5.5 inches) | 78% | very high |
| August Weather | 21°C (71°F) | 89 mm (3.5 inches) | 76% | very high |
| September Weather | 18°C (64°F) | 84 mm (3.3 inches) | 78% | very high |
| October Weather | 12°C (54°F) | 138 mm (5.4 inches) | 84% | high |
| November Weather | 4°C (40°F) | 83 mm (3.3 inches) | 89% | moderate |
| December Weather | 0°C (32°F) | 86 mm (3.4 inches) | 86% | low |