Climate almanac
Saint Simons Island
Georgia, United States · 31.15°, -81.37°
What is the climate like in Saint Simons Island?
The best time to visit Saint Simons Island is typically March – May, with trip comfort peaking in April (7.2/10). Saint Simons Island is warmest in July, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 51°F (10°C). The wettest month is typically August and the driest is April; the year sees roughly 47 in (1187 mm) of precipitation.
- Best time to visitMarch – May — comfort peaks in April (7.2/10)
- Warmest monthJuly — average high 84°F (29°C)
- Coolest monthJanuary — average low 51°F (10°C)
- Wettest monthAugust (7.0 in (178 mm))
- Driest monthApril (2.7 in (69 mm))
- Annual precipitation47 in (1187 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromBrunswick, 13 km away (1895-2026)