September in St. Simons Island, GA: variable for golf — mixed conditions — check the live score. Best tee times: morning before noon for the most comfortable round.
| Average September Weather | |
|---|---|
| Avg daily high | 83°F |
| Avg daily low | 72°F |
| Rainy days | 19 / mo |
| Avg peak wind | 13.3 mph |
Most golfers arriving in September expect a significant break from summer — and that's where the first surprise hits. At 83°F average high and 72°F overnight, the heat barely retreats from August's 87°F. You're still dealing with genuine coastal Georgia humidity, and with 19 precipitation days, roughly two-thirds of your rounds carry a real rain threat. September is the 4th-hottest and 4th-wettest month of the year here, not the shoulder-season reprieve many visitors assume.
The second surprise cuts the other way: wind stays relatively cooperative. Peak wind averages 13.3 mph, making September the 5th-calmest month on the calendar. On days when the afternoon storms hold off, morning rounds can feel genuinely pleasant — low humidity pockets do exist, usually before 10 AM. The key is managing expectations: this month rewards flexible scheduling far more than it rewards anyone who books a fixed afternoon tee time and hopes for the best.
Book the earliest available tee time — 7 or 7:30 AM — to get ahead of the afternoon convective storms that account for much of the month's 19 precipitation days. Last-minute same-week bookings are often easier to find than in peak spring season, so check for late openings rather than locking in weeks out if your schedule allows flexibility. See how conditions rate hour by hour on our playability scale.
September cuts 8 precipitation days compared to August's 27, which sounds dramatic until you realize 19 rainy days is still a crowded calendar. The temperature drop is modest — just 4°F off August's average high of 87°F — so the heat relief is more psychological than physical. October is where conditions genuinely shift, shedding another 8 precipitation days down to just 11 and cooling to a 77°F average high, making it the cleaner month for planned golf travel.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for St. Simons Island, GA for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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It's workable but not the island's best month. With an average high of 83°F, 72°F lows, and 19 precipitation days, conditions are hot and frequently interrupted by rain. Early morning rounds on clear days can be enjoyable, but the Variable season tier reflects real unpredictability — October, with 11 precipitation days and a 77°F average high, is a noticeably better bet if your dates are flexible.
September averages 19 days with measurable precipitation, making it the 4th-wettest month of the year on the island. Most disruptions come from afternoon convective storms that build quickly in the coastal heat, so morning rounds are significantly less affected. Peak winds run 13.3 mph — the 5th-calmest month — so it's rain, not wind, that defines the weather risk.