St. Augustine weather in December

December in St. Augustine: nice, a little rain, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

St. Augustine🇺🇸 United States · Florida · City83
  1. 80Jan
  2. 87Feb
  3. 92Mar
  4. 89Apr
  5. 77May
  6. 65Jun
  7. 61Jul
  8. 60Aug
  9. 63Sep
  10. 74Oct
  11. 86Nov
  12. 83Dec

#5 of 12 months in St. Augustine · #384 of 1413 destinations to visit in December · comfort 83/100 (tier A)

Days
21°C
Nights
12°C
Wet days
6
Sun
7.7 h
Humidity
78%
Daylight
10 h
St. Augustine, United States
Photo: Gagan Kaur · Pexels

Traveller notes on St. Augustine in December

Notes from nearby Jacksonville (58 km away)

St. Augustine doesn't have its own notes for December yet — these are about Jacksonville, close enough to share the season.

Regulars are consistent this is cold-by-Florida-standards weather, good for strolling the beach rather than sitting on it, with surfers and walkers out but few sunbathers even on a nice day. Our row backs that cool read, 20.8C over 10.7C nights feeling 9C, with 95.2mm of rain across 6.2 days. Regulars are specific this runs noticeably cooler than the Gulf Coast or Miami, a real 10-15 degree Fahrenheit gap from Orlando alone, so anyone chasing genuine beach weather in December is pointed further south instead. Visitors coming from colder Northern climates are just as consistent that they find this same weather wonderful rather than cold, a real perspective gap regulars call out directly. The record: humidity 79 percent, 7.2 hours of sun, a 14.9 kph wind and AQI 37.
StrollingWeatherNotSunbathingWeather · December · 1 month ago · about Jacksonville · Read more on Tripadvisor ↗

Other months in St. Augustine

Regulars describe a genuine day-to-night split as typical this month - shorts and beach weather comfortable right up until sundown, then long pants, a sweater or light jacket needed once temperatures drop after dark. Our row backs that mild, still-dry read, 23.5C over 15.4C nights, with rain light at 58.3mm across 6.4 days and humidity at 76 percent. Regulars are consistent this counts among the most comfortable stretches of the year here, crowds noticeably thinner than peak season with the beach itself often close to empty, ideal for long walks. The sea sits at 21.5C, still comfortably swimmable for many despite the cooling air. The record: 8.3 hours of sun, a 20.1 kph wind and AQI 45.
ShortsByDaySweaterBySundown · November · 1 month ago · Read more on Tripadvisor ↗
St. Augustine-forum threads on January weather describe a genuinely mixed bag day to day, a run of 70-degree, t-shirt afternoons entirely plausible right alongside a cold snap that drops nights into the 30s and demands a real winter jacket. Posters are consistent this is the dry season locally, plenty of sun overall even when a cold front rolls through, and that packing layers rather than betting on one type of weather is the only reliable strategy. Swimming is firmly off the table for all but the hardiest visitors, the water itself far colder than it looks on a sunny day. The historic district and its walkable streets stay comfortable for sightseeing regardless of which version of January weather shows up. Regulars call it a genuinely good value month, thin winter crowds without the true depths of a northern winter. The record: 18.9C days feeling like 17C, 9.3C nights, a 18.2C sea, 73 percent humidity and 7.7 hours of sun.
OldTownJanuaryRegular · January · 1 month ago · Read more on Tripadvisor ↗
St. Augustine-forum threads on July weather confirm it's hot and humid, daytime highs regularly near 90 Fahrenheit with afternoon thunderstorms a near-daily fixture. Posters describe the rain as heavy but brief rather than an all-day event, typically a hard downpour that clears within an hour or so. The standing local strategy repeated across threads is to front-load sightseeing for the morning, then treat the beach as an afternoon activity starting around 3 or 4pm, deliberately avoiding the 2-to-3pm window widely called the hottest stretch of the day. The historic district's narrow streets offer some shade, but posters still recommend frequent water breaks and pacing walking tours around the heat rather than pushing through midday. The record: 31C days feeling like a punishing 38C, 24.4C nights, 123mm across 13.1 days, a 29.3C sea, 83 percent humidity and 11.7 hours of sun.
OldTownJulyRegular · July · 1 month ago · Read more on Tripadvisor ↗
February in St Augustine runs from the 40s to the 70s Fahrenheit with little rain, and the shape of the day is the useful part: cool mornings, especially early in the month, warming enough that a windbreaker at nine can become shorts by the afternoon. Regulars give averages of 69F and 48F against our row's 21.1C and 11.3C, with 42mm across 4.7 days. It is also one of the quieter months - schools are in session and the Christmas crowds are long gone - which is the main reason they recommend it. The ocean sits at 64 to 72F, our row saying 18.8C, and the wind takes the edge off that further. The record: humidity 79 percent, 8.7 hours of sun and a 19.9 kph wind.
WindbreakerAtNineShortsAtTwo · February · 1 month ago · Read more on Tripadvisor ↗

Add your own note from St. Augustine's card on the map.

St. Augustine climate normals — December

Daytime high21°C / 70°F😎 nice
Nighttime low12°C / 53°F
Feels like (high)20°C / 68°F
Sea temperature19°C / 66°F🧊 bracing
Rainfall56 mm / 2.2 in🌦 some rain
Rainy days6 days
Humidity78%💦 very humid
Dew point13°C / 55°F
Sunshine7.7 h/day
Daylight10.3 h
Wind20 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)

JFMAMJJASOND

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.

JFMAMJJASOND

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 YearCrowded

    Three 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 season

    This 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.

What's on around the world in December →

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?

Loading map…

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.

Within 300 km: Savannah's Holiday season on the squares on 25 Nov – 31 Dec, and Jacksonville's TaxSlayer Gator Bowl on 30 Dec.