St. Augustine, Florida, in December presents a distinct shift from the intense summer heat, offering a more temperate and comfortable environment that attracts both visitors and residents seeking relief from colder climates. The average temperature during this month typically ranges from a low of roughly 50°F (10°C) to a high near 66°F (19°C), creating pleasant days ideal for outdoor activities. This period marks the beginning of the dry season, which means lower humidity levels and significantly reduced rainfall compared to the summer months. The weather pattern is heavily influenced by its coastal location on the Atlantic, which acts as a thermal buffer, preventing extreme temperature fluctuations common in inland areas of Florida.
Understanding December Temperature Averages
When examining the specific data for December, the numbers reflect a definitive move toward winter conditions, though rarely reaching the freezing point. Daytime highs usually sit comfortably in the mid-60s, which is perfect for walking along the historic streets or enjoying a meal on a patio. Nighttime lows, however, can dip into the upper 40s or even 50s, necessitating a light jacket or sweater for evening outings. This fluctuation between day and night is a key characteristic of the month, requiring a versatile wardrobe to stay comfortable throughout the day.
Typical Highs and Lows
Average High Temperature: 66°F (19°C)
Average Low Temperature: 49°F (9°C)
Record High: 82°F (28°C)
Record Low: 22°F (-6°C)
The Shift to Dry Season Conditions
December firmly establishes the dry season in St. Augustine, a transition that defines the outdoor experience for the remainder of the winter. Rainfall drops to an average of about 2.5 inches for the month, distributed over roughly 9 days of precipitation. This sharp decrease in showers means a higher likelihood of clear, sunny skies, which is a primary reason why the area sees a surge in tourism during the holiday season. The reduced cloud cover also allows for ample sunshine, contributing to the milder perceived temperatures.
What to Wear and Pack
Packing for St. Augustine in December requires a balance between warmth and breathability, focusing on layers. Light sweaters, long-sleeve shirts, and comfortable pants are essential for the cooler mornings and evenings. During the day, you might find short sleeves sufficient, particularly when engaging in activities like golf or beach walks. Footwear should be comfortable for exploring the historic district, and a waterproof jacket is always a smart addition in case a brief winter shower passes through.
Ocean Conditions and Beach Visits
While the air temperature is mild, the Atlantic Ocean remains quite cold in December, with average water temperatures hovering around 64°F (18°C). Swimming is generally considered brisk and is not the primary draw for most beachgoers during this time. However, the cooler air combined with the warmer water can create a dramatic and scenic atmosphere, perfect for beachcombing or simply enjoying the view. Visitors interested in water sports will likely find the conditions too cold for extended periods without thermal protection.
Holiday Events and Festivities
The holiday season significantly shapes the December atmosphere in St. Augustine, with numerous events taking advantage of the pleasant weather. The annual Christmas festival, known as "Christmas of the Lights," features elaborate light displays and decorations that are best viewed in the clear, cool evenings. These events provide a festive backdrop to the already charming colonial architecture, making evening strolls particularly magical. The weather supports extended time outdoors, allowing guests to fully immerse themselves in the seasonal celebrations without the discomfort of summer humidity.
