Historical weather data, all-time temperature records, and monthly climate averages for Wilmington Island, GA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Wilmington Island typically delivers a mild spring day with a high around 73° and a low near 56°. This date has seen a 41-degree swing in extremes over the years — from a chilly 42° low back in 1966 to an 83° high just this year in 2025. Rain is unlikely, with only a 16% historical chance of precipitation.
Wilmington Island plays in extremes — the thermometer has hit 105° in August 1954 and plunged to 9° in January 1970, a 96-degree spread between the all-time records. The wettest single day on record dumped 5.87 inches in August 1964, and the area even picked up 3 inches of snow in February 1968.
Summers here are legitimately hot — the warmest week of the year averages a 90° high in early July, with peak rainfall also arriving mid-July at nearly 2 inches per week. If you prefer cooler and drier, aim for January through early March, when highs hover in the low 60s and summer's humidity feels like a distant memory.