MADISON BLUE SPRING · AUGUST · NORTH FLORIDA
In August the air over Madison Blue Spring averages a 91.5°F high, and the water leaving the vent read 73.2°F the last time the USGS gauge was checked. A spring keeps no seasons, so that second number holds in February too. Picking a month decides only one of the two, and August runs the contrast to within a degree of July’s.
August also delivers 5.11 inches of rain, eight days of it measurable, and it sits inside the Atlantic hurricane season (June 1 to November 30, statistical peak around September 10, per NOAA’s hurricane center). Our Florida best-time guide sets the wet season against the dry one. At this spring the practical consequence is simple: the water belongs to the morning, the afternoon belongs to shade.
THE MONTH AT A GLANCE · AUGUST
Plan the water for the morning: August averages a 91.5°F high, the vent reads 73.2°F, and eight days in the month bring measurable rain.
HOT AIR · CONSTANT WATER · WET SEASON · AIR NORMALS MEASURED 27 MILES AWAY
Go for: the 18.3°F drop from a 91.5°F afternoon into 73.2°F water, 13 hours 17 minutes of daylight on the 15th, and one wet day fewer than July.
Think twice before: counting on a dry afternoon, or on a gate price and an opening hour we could not verify.
Air: NOAA NCEI 1991-2020, Valdosta Rgnl AP · Water: USGS gauge 02319302 · Facilities: Florida DEP 2024 inventory · full sources at the end
On this page
- Madison Blue Spring weather in August91.5°F highs, 5.11 inches of rain
- How cold the spring water is73.2°F on the USGS gauge
- Crowds and what a visit costsWhat we verified, and what we could not
- Things to do in AugustThe state park, the vent, the state inventory
- A two-day plan around the heatMorning water, sheltered afternoons
- August vs July and SeptemberHow the three months compare
- Is August a good month to go?Who should shift four weeks
- Madison Blue Spring in JulyThe month before, in full
One caveat before the figures, because it matters more at a spring than almost anywhere. Every air number here comes from a thermometer about 27 miles away, in Georgia, and describes the sky, not the vent. The park’s year-round practicalities live on the main Madison Blue Spring page, and getting to this corner of north Florida is covered in our getting-around guide.
Madison Blue Spring weather in August: average highs, lows and rain days
| August measure | Value |
|---|---|
| Average high | 91.5°F |
| Average low | 71.0°F |
| Monthly precipitation | 5.11 in |
| Days with 0.10 in or more | 8.0 |
| Days with 1 in or more | 1.3 |
| Daylight on August 15 | 13 h 17 min |
| Spring water (instantaneous reading) | 73.2°F |
NOAA’s National Centers for Environmental Information publishes the 1991-2020 monthly normals for station USW00093845, Valdosta Regional Airport in Georgia, roughly 27 miles from the spring. That is a real thermometer at a real airport, not a reanalysis grid cell, and it gives August a 91.5°F average high, a 71.0°F average low and 5.11 inches of rain. All three describe the air. The water underneath has its own number and ignores the calendar entirely.
Eight days in an average August record at least a tenth of an inch of rain, about one day in four, and 1.3 of them bring an inch or more. In practice that means one properly wet August day and a handful of shorter interruptions, arriving on Florida’s wet-season schedule of afternoon thunderstorms (our state guide maps the May-to-October pattern). Mornings carry the better odds.
Between the 91.5°F high and the 71.0°F low there are 20.5 degrees, and both ends are warm. Nothing in the bag needs to be warm either: a rain shell that packs small, a dry shirt for the drive home, water shoes for limestone, and more drinking water than a northern summer would suggest. The one thing worth adding is a towel you can stand to put on twice.
August 15 gives 13 hours 17 minutes of daylight, sunrise at 6:58 a.m. and sunset at 8:15 p.m. local time, per sunrise-sunset.org. The useful half of that is the front end. Light after seven in the evening is generous for a drive, but the heat does not drop with the sun as fast as the sky does.
How warm is Madison Blue Spring in August?
The USGS gauge at the spring, station 02319302, read 73.2°F (22.9°C) on September 11, 2026. Against an average August high of 91.5°F, that is an 18.3-degree drop the moment you go under. Coastal water tables usually publish an average of daily maxima, which runs slightly warmer than a 24-hour mean; ours is not even an average. It is one instantaneous reading from a spring that reads close to the same figure every day of the year.
Mornings at 71.0°F and upward need nothing but the swimsuit you arrived in and something with sleeves for the sun. Afternoons are the other extreme: at 91.5°F you will want shade between swims rather than a second layer. For a long stretch in 73.2°F water, a rash guard is the sensible piece. It is cool enough to catch your breath on entry and not cold enough to end the swim.
Frost plays no part in this month. The normals put the average August low at 71.0°F, and we found no freezing-night count published for the station, so we give none. The temperature that could catch you out in August is the one in the parking lot at two in the afternoon.
How busy is Madison Blue Spring in August? Crowds, prices and the demand peak
We found no occupancy series and no monthly room-rate data for this part of north Florida, so we crown no month expensive and name no floor for the year. The calendar still says something: August falls inside Florida’s wet season, which runs May through October, and inside the Atlantic hurricane season, June 1 to November 30. Those are dates, not prices, and we keep them apart.
Book refundable. NOAA’s hurricane center puts the season’s statistical peak around September 10, and an August trip sits on the ramp toward it. How many weeks ahead to reserve a bed, we cannot tell you, because we found no availability data for the area. The state-wide picture sits in our lodging guide and our trip-cost breakdown.
We could not verify the local lodging-tax rate, so we give no percentage. The same applies at the gate: floridastateparks.org answered our automated reads with a 403 on September 11, 2026, so we quote no entrance fee, no opening hour and no closing time for Madison Blue Spring State Park. Call or check the park’s own listing before you drive.
Where money genuinely changes this month is the drive and the bed. Staying close enough to be at the water within an hour of the 6:58 a.m. sunrise turns August into a morning trip; staying two hours out turns it into a 91.5°F afternoon trip. North Florida runs on cars, so the rental line and the room line do more for an August day here than anything else you can pay for.
Things to do at Madison Blue Spring in August
August does one thing no cool month can: it makes 73.2°F water feel like rescue. The gap between air and water is 18.3 degrees now. In September, with an average high of 87.8°F, the same water sits 14.6 degrees below the air, and the shock on entry fades with it. Travelers who want contrast rather than comfort get their best version of it in the last weeks of summer.
The site itself is Madison Blue Spring State Park, and the number that anchors a visit comes from USGS gauge 02319302 at the spring: 73.2°F on September 11, 2026. Florida’s Department of Environmental Protection, in its 2024 Recreational Facilities Inventory, lists no designated swimming area for this park and no canoe, kayak or tube launch. Read that as what the state’s paperwork records.
None of the water’s behavior belongs to August. It reads close to 73.2°F in February too, when the walk back to the car is the cold part of the outing. This month reverses the order, and that reversal is the whole seasonal argument: the air does the work, the spring stays exactly where it was.
We cannot tell you what is free in August, because we could not read the fee schedule at all. What we can name is the legal frame: Florida Statutes 373.802(5) reserves the title Outstanding Florida Springs for the historic first-magnitude springs, as the Florida Geological Survey determines them, plus six springs written into the statute by name. Our sources do not say which of those lists applies here, and we will not guess.
Madison Blue Spring in August: a two-day itinerary
Give day one to the first hours of light. Sunrise on August 15 lands at 6:58 a.m., and the three hours after it are the coolest of the day, well before the 91.5°F average high arrives. Swim then. Keep the middle of the day for a long lunch and a seated, shaded afternoon, since eight days in an average August bring measurable rain and the storms favor the afternoon. Light holds until 8:15 p.m., so the drive back is unhurried. Confirm the park’s posted hours when you book, because we could not read them.
Day two repeats the schedule rather than improving on it, with one change: go in earlier and stay in longer, because 73.2°F water rewards a second visit more than a first. If the sky turns, remember that 1.3 days in an average August drop an inch or more of rain. That is the day to drive instead, and our things-to-do guide carries the indoor options across the state. The July page covers the same site four weeks earlier.
Madison Blue Spring in August vs July and September
| Measure | July | August | September |
|---|---|---|---|
| Average high | 92.1°F | 91.5°F | 87.8°F |
| Average low | 70.1°F | 71.0°F | 66.5°F |
| Precipitation | 5.33 in | 5.11 in | 4.22 in |
| Days with 0.10 in or more | 9.0 | 8.0 | 5.2 |
| Spring water | 73.2°F, no seasonal swing | 73.2°F, no seasonal swing | 73.2°F, no seasonal swing |
August runs 0.6°F cooler than July by day and 0.9°F warmer by night, with 0.22 inch less rain and one wet day fewer. September is the real break: 3.7°F off the high, 4.5°F off the low, 0.89 inch less rain and 2.8 fewer days with measurable precipitation. The water line does not move at all across the three columns, and that is the point of coming to a spring rather than a beach.
Shift four weeks later and you gain a drier, quieter sky and a low that finally drops into the mid-60s. You lose 3.7 degrees of contrast against the 73.2°F water, and you move your trip onto September 10, the statistical peak of the Atlantic hurricane season. Shift four weeks earlier and July hands back an extra wet day and a marginally hotter afternoon for no gain in the water.
Is August a good time to visit Madison Blue Spring?
Yes, for anyone whose trip is built around getting into the water and out of the heat. An 18.3-degree drop from air to spring is the summer’s argument in a single figure, and 13 hours 17 minutes of daylight leaves room to do it twice in a day. No, for anyone who needs dry afternoons, a settled outdoor schedule, or a firm price at the gate, none of which August or our sources can promise.
If the answer for you is no, September is the month to move to: 87.8°F days, 66.5°F nights, 4.22 inches of rain and 5.2 wet days instead of 8.0. The trade is the storm calendar, since NOAA’s peak date falls on September 10, and softer contrast against water that has not changed a degree.
What August alone offers is the widest useful gap of the late summer between a 91.5°F afternoon and a 73.2°F spring, with one wet day fewer than July to spend it in.
The last word
Decide the hour, not the month. Anyone who can be in the water by eight in the morning gets the good version of August here, and anyone who arrives at two gets 91.5°F and a storm-shaped afternoon. One number we have not served yet explains why the spring looks the way it does: the same USGS gauge measured 72 cubic feet per second leaving the vent, water replaced faster than it can cloud. Book refundable, pack the rain shell, and check the park’s posted hours before you drive.
Sources & data for this guide
- August normals (91.5°F high, 71.0°F low, 5.11 in, 8.0 days at 0.10 in, 1.3 days at 1 in) · NOAA NCEI monthly normals 1991-2020, station USW00093845, Valdosta Rgnl AP, GA · checked Sep 24, 2026
- July and September normals used in the comparison table · NOAA NCEI monthly normals 1991-2020, same station · checked Sep 24, 2026
- Station distance caveat: the thermometer sits about 27 miles (44 km) from the spring and measures air, not spring water · NOAA NCEI station metadata · checked Sep 24, 2026
- Daylight, sunrise 6:58 a.m. and sunset 8:15 p.m. local on August 15 · sunrise-sunset.org, converted from UTC · checked Sep 24, 2026
- Water at 73.2°F (22.9°C) and flow of 72 cubic feet per second · U.S. Geological Survey, National Water Information System, station 02319302 Madison Blue Spring, instantaneous reading · read Sep 11, 2026
- No designated swimming area and no canoe, kayak or tube launch listed · Florida Department of Environmental Protection, Recreational Facilities Inventory, 2024 annual report · checked Sep 24, 2026
- Outstanding Florida Springs definition · Florida Statutes 373.802(5), leg.state.fl.us · checked Sep 24, 2026
- Hurricane season dates and the September 10 peak · NOAA National Hurricane Center climatology, via our Florida orientation guide · checked Sep 24, 2026
- Editorial admission: floridastateparks.org returned 403 to our automated reads on Sep 11, 2026 and the FWC manatee page renders client-side, so we verified no entrance fee, no opening hour, no lodging-tax rate and no manatee count · rechecked before you go
To plan your stay
- Madison Blue Spring: When to Go, Month by Month Highs, Rain and Daylight
- Madison Blue Spring in July: Water Temperature, Heat and Rain Days
- Madison Blue Spring in September: Weather, Water Temperature and How It Compares to August
- Madison Blue Spring in June: Water Temperature, Rain Days and What the Park Lists