Last updated: June 24, 2025
In September, the average temperature in Surfside Beach, United States is a warm 27°C (81°F), with fluctuations ranging from a cool 17°C (63°F) to a sweltering 33°C (91°F). Expect 211 mm (8.3 in) of precipitation over 17 days, contributing to a humidity level of 73% that adds to the tropical atmosphere.
In September in Surfside Beach, the average temperature is 27°C (81°F). Maximums can reach 33°C (91°F), while minimums can drop to as low as 17°C (63°F). This mild and pleasant climate makes Surfside Beach an ideal destination for travelers seeking both warmth and comfort during their visit.
In Surfside Beach in September, the precipitation amount is 211 mm (8.3 in) spread over a total of 17 days.
In Surfside Beach in September, humidity is 73%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel sticky and heavy, while also requiring frequent hydration breaks to stay comfortable during your travels.
In Surfside Beach in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Surfside Beach.
UV Risk Categories
Weather in Surfside Beach varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Surfside Beach, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (57°F) | 77 mm (3.0 inches) | 78% | moderate |
| February Weather | 15°C (60°F) | 67 mm (2.7 inches) | 81% | very high |
| March Weather | 19°C (66°F) | 60 mm (2.4 inches) | 76% | very high |
| April Weather | 21°C (71°F) | 72 mm (2.8 inches) | 79% | extreme |
| May Weather | 25°C (77°F) | 147 mm (5.8 inches) | 79% | extreme |
| June Weather | 28°C (82°F) | 149 mm (5.9 inches) | 74% | extreme |
| July Weather | 28°C (83°F) | 142 mm (5.6 inches) | 71% | extreme |
| August Weather | 29°C (84°F) | 167 mm (6.6 inches) | 68% | extreme |
| September Weather | 27°C (81°F) | 211 mm (8.3 inches) | 73% | extreme |
| October Weather | 24°C (75°F) | 104 mm (4.1 inches) | 75% | very high |
| November Weather | 19°C (66°F) | 75 mm (2.9 inches) | 78% | high |
| December Weather | 16°C (61°F) | 89 mm (3.5 inches) | 84% | moderate |