St. Augustine, Florida, in December presents a distinct contrast to the approaching winter chill in much of the United States. While northern regions brace for freezing temperatures and snow, this coastal city on the Atlantic seaboard offers a temperate escape. The weather during this month is a primary draw for visitors and a critical factor for residents planning their daily routines. Understanding the specific conditions, from average temperatures to oceanic influences, is essential for anyone looking to experience the city or manage life here during this period.
Typical December Temperature Ranges
December marks the official start of winter, but the season here is remarkably mild compared to other parts of the country. Daytime high temperatures typically hover in the pleasant mid-60s to low 70s Fahrenheit (18-22°C). This warmth is often sufficient for light clothing like t-shirts and shorts during the sunny hours. Overnight lows, however, can dip into the cooler 40s and low 50s Fahrenheit (4-11°C), necessitating a light jacket or sweater, particularly for evening activities. This daily swing creates a comfortable environment where intense heat is absent, but freezing conditions are equally rare.
Ocean Temperature and Coastal Influence
The Atlantic Ocean plays a significant role in shaping St. Augustine’s December climate. While the air temperatures are agreeable, the sea water remains cool. Ocean temperatures average around 65°F (18°C) at the beginning of the month, slowly dropping to near 63°F (17°C) by New Year’s. These temperatures are too cold for extended swimming for most people without a wetsuit, but they contribute to the moderate coastal weather. The ocean acts as a thermal buffer, preventing the city from experiencing the extreme cold snaps that inland areas endure, and it helps to maintain the humidity at a comfortable level.
Rainfall and Humidity Levels
December is part of St. Augustine’s drier season, receiving significantly less precipitation than the summer months. The city averages between 2 to 3 inches of rainfall for the month, often falling on just a few days. Rain events are typically brief showers rather than prolonged downpours, allowing for plenty of uninterrupted outdoor time. The relative humidity also decreases during this period, moving away from the muggy conditions of summer. This lower humidity, combined with the clear skies, makes the air feel crisp and clean, enhancing the overall comfort of the city.
Sunshine and Daylight Hours
Visitors will find December to be an excellent time to explore outdoor attractions due to the abundant sunshine. The city enjoys an average of 7 to 8 hours of sunshine per day, a stark contrast to the gloomier winter months elsewhere in the north. The sun typically rises around 7:00 AM and sets close to 5:15 PM, providing a long window of daylight for sightseeing, golfing, or dining on a patio. The clear skies minimize cloud cover, offering stunning views of the historic coastline and creating ideal conditions for photography.
What to Pack for a December Visit
Packing for St. Augustine in December requires a balance of light and layered clothing. Lightweight garments such as t-shirts, breathable pants, and dresses are perfect for the warm afternoons. However, it is crucial to include layers for the cooler mornings and evenings. A medium-weight jacket or a cozy sweater will be indispensable. Comfortable walking shoes are a must for exploring the historic brick streets, and it is wise to bring a pair of closed-toe shoes in case the evening temperature drops. Sunglasses and sunscreen remain important accessories, as the UV index can still be moderate during the day.
