SeasonMapSt. Augustine weather in December
United States
December in St. Augustine: nice, a little rain, with clean air — an excellent time to visit.
#5 of 12 months in St. Augustine · #377 of 1383 destinations to visit in December · comfort 83/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on St. Augustine in December
Other months in St. Augustine
St. Augustine's forum calls mid-March usually beautiful — mid-70s°F highs, low-60s°F overnight, mostly sunny. Regulars are honest the water itself is still too cold for swimming even when the beach is warm enough for shorts, and that a late-season cool snap can still turn up, so a layer is worth packing.
Add your own note from St. Augustine's card on the map.
St. Augustine climate normals — December
| Daytime high | 21°C / 70°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 53°F | |
| Feels like (high) | 20°C / 68°F | |
| Sea temperature | 19°C / 66°F | 🧊 bracing |
| Rainfall | 56 mm / 2.2 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 13°C / 55°F | |
| Sunshine | 7.7 h/day | |
| Daylight | 10.3 h | |
| Wind | 20 km/h / 12 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in St. Augustine in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsNights of Lights, Winter / Christmas break in United States, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for St. Augustine's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherSt. Augustine's weather peaks February–April, best around March.
Best weatherFair weatherToughest weather
What's on in St. Augustine in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Nights of Lights
21 Nov – 31 Jan · usuallyChristmas & New YearCrowdedThree million white lights go up over the old town from the Saturday before Thanksgiving and stay until late January, which turns a quiet coastal off-season into the busiest weekends of the year. Source ↗
- Nature
Right whale calving season
1 Dec – 15 Mar · usuallyWhale seasonThis is the only known calving ground for North Atlantic right whales, and a few hundred animals remain in the population. Sightings from the beach happen most winters and are counted individually.
Nearby, and something's on
Within 300 km of St. Augustine — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is St. Augustine?
St. Augustine in December — FAQ
- Is December a good time to visit St. Augustine?
- December in St. Augustine: nice, a little rain, with clean air — an excellent time to visit. It ranks #5 of 12 months for St. Augustine on SeasonMap's comfort score (83/100).
- What is the weather like in St. Augustine in December?
- In December, St. Augustine averages a daily high of 20.9°C and a low of 11.9°C, with about 55.6 mm of rain over roughly 6.2 rainy days.
- What is the air quality in St. Augustine in December?
- St. Augustine has a mean US Air Quality Index of about 40 in December.
Other months in St. Augustine
Compare St. Augustine in December
Warmer or cooler than St. Augustine in December
Similar destinations in North America — December
Within 300 km: Savannah's Holiday season on the squares on 25 Nov – 31 Dec, and Orlando's Christmas and New Year on 20 Dec – 2 Jan.