What should you know about St. Augustine's weather?
- NWS office
- Jacksonville (JAX)
- Climate
- Humid subtropical
- Time zone
- EST/EDT
- Elevation
- 5 ft
- Coordinates
- 29.89° N, 81.31° W
- Nearest radar
- KJAX · Jacksonville NEXRAD · 47 mi
- County
- St. Johns County, FL
- Yearly rain
- 50.6 in
- Warmest month
- July · 82.4°F average
- Coldest month
- January · 57.6°F average
- Severe storm peak
- May to Jul
How much rain does St. Augustine get each month?
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 67.5 | 69.7 | 74.4 | 79.8 | 85.1 | 88.6 | 91.0 | 89.9 | 87.4 | 81.8 | 74.9 | 68.9 |
| Low °F | 47.8 | 50.2 | 54.6 | 60.6 | 67.4 | 72.3 | 73.8 | 74.2 | 73.1 | 66.5 | 57.5 | 51.3 |
| Rain (in) | 2.74 | 2.69 | 3.43 | 2.93 | 3.66 | 6.27 | 4.88 | 7.18 | 7.18 | 4.37 | 2.32 | 2.99 |
| Month | High °F | Low °F | Rain (in) |
|---|---|---|---|
| Jan | 67.5 | 47.8 | 2.74 |
| Feb | 69.7 | 50.2 | 2.69 |
| Mar | 74.4 | 54.6 | 3.43 |
| Apr | 79.8 | 60.6 | 2.93 |
| May | 85.1 | 67.4 | 3.66 |
| Jun | 88.6 | 72.3 | 6.27 |
| Jul | 91.0 | 73.8 | 4.88 |
| Aug | 89.9 | 74.2 | 7.18 |
| Sep | 87.4 | 73.1 | 7.18 |
| Oct | 81.8 | 66.5 | 4.37 |
| Nov | 74.9 | 57.5 | 2.32 |
| Dec | 68.9 | 51.3 | 2.99 |
ST AUGUSTINE LIGHTHOUSE, FL US · 2 mi away · NOAA NCEI U.S. Climate Normals 1991 to 2020
Why does the St Augustine weather radar come from Jacksonville?
Because the nearest NEXRAD radar to St. Augustine is KJAX, about 47 miles away. Earth's curvature makes a radar beam rise higher above the surface the farther it travels, so the layers nearest the ground are sampled less well at a distance. The National Weather Service notes this overshoot is worse in the cool season, when cloud bases are lower and rain is shallower. On a gray winter day, check the hourly forecast as well as the map.
What happened when Hurricane Dora hit St. Augustine in 1964?
Dora's large eye moved over St. Augustine just after midnight on September 10, 1964. Radar placed landfall at 12:20 am, 6 miles north of the city. Peak winds in St. Augustine were estimated at 125 mph. Tides were estimated at 12 feet across Anastasia Island, and over 40 homes were lost along the coast. Dora was the first hurricane to make landfall over northeast Florida in the 20th century.
How did Hurricane Matthew flood St. Augustine from offshore?
Matthew's center stayed offshore of the Florida east coast in October 2016, but water still reached up to 4 feet above ground in the city, especially near the bayfront and the San Sebastian River. Surge flooding reached the sea walls at St. Augustine Beach and the Castillo de San Marcos National Monument. More than 2 feet of saltwater intrusion occurred on Anastasia Island. South of town, inundation of 6 to 7 feet cut a new inlet in the barrier island between Marineland and Matanzas Inlet.
Can a hurricane that comes ashore far away still flood St. Augustine?
Yes. Irma made landfall on Florida's southwest coast in September 2017, but its large wind field still drove significant storm surge flooding along the northeast coast. A storm tide sensor on the Matanzas River south of St. Augustine recorded 4.8 feet above mean higher high water. The highest high water mark surveyed in that area was 3.3 feet above ground, near Vilano Beach. An EF-1 tornado from Irma also hit St. Augustine and caused significant damage to a cemetery.
When does St. Augustine get most of its rain?
Most of St. Augustine's rain falls from June to September. The 1991 to 2020 normals at the St. Augustine Lighthouse station put August and September highest at 7.18 inches each, while November averages 2.32 inches. The station averages 50.6 inches a year. On KJAX, a summer storm that stalls over the city is the one to watch for street flooding.
When should you check the St. Augustine radar?
Hurricane season
June 1 to November 30Most Atlantic activity comes from mid-August to mid-October. Rough surf can cause significant sand overwash on beach roads, as Matthew did in Summerhaven and Ponte Vedra, so check road reports before driving A1A.
Severe storm peak
May to JulyAbout 55% of the county's 1996 to 2025 severe reports fall from May to July. When storms start building on KJAX in the afternoon, paddlers in the Guana Tolomato Matanzas reserve head back to the launch.
What else do people ask about the St. Augustine radar?
Which NWS office and radar cover St. Augustine?
NWS Jacksonville (JAX) issues forecasts and warnings for St. Augustine. The nearest NEXRAD radar is KJAX, about 47 miles from the city center.
How often does the radar on this page update?
The radar loop on this page updates every 5 minutes.
Is this page an official warning service?
No. It shows radar and forecasts only. For warnings, follow NWS Jacksonville and local emergency alerts.
Quick facts
- Radar: KJAX (Jacksonville NEXRAD), a new frame every 5 minutes
- Forecasts and warnings: NWS Jacksonville (JAX)
- Severe storms peak from May to July (NOAA Storm Events, 1996 to 2025)
- Local time: EST/EDT
- Radar: KJAX, a new frame every 5 minutes
- Warnings: NWS Jacksonville (JAX)
- Severe storms: May to July
- Local time: EST/EDT
Where does this data come from?
- NOAA NEXRAD radar via Iowa Environmental Mesonet
- National Weather Service, Jacksonville office
- NOAA NCEI U.S. Climate Normals 1991 to 2020: ST AUGUSTINE LIGHTHOUSE, FL US
- NOAA NCEI Storm Events Database, 1996 to 2025
- USGS Elevation Point Query Service
- GOES-East satellite imagery
- Open-Meteo forecast API
- OpenStreetMap contributors
- National Weather Service: Florida floods, Hurricane Dora 1964
- National Hurricane Center: Hurricane Matthew tropical cyclone report
- National Hurricane Center: Hurricane Irma tropical cyclone report
- National Weather Service: WSR-88D radar rainfall estimation
- National Hurricane Center: Tropical cyclone climatology