WAKULLA SPRING · SEPTEMBER · THE MONTH GUIDE
September at Wakulla Spring runs two temperatures at once. The air averages 88.6°F in the afternoon. The spring itself read 70.3°F on the USGS gauge on September 11, 2026, and it reads close to that every day of the year, because a spring has no seasons and the air above it does. Eighteen degrees separate the walk down to the water from the first step into it.
Against August, the month hands back real numbers: 2.9 degrees off the average high, 2.69 inches less rain, and 3.8 fewer days with measurable rain. Against October it keeps 6.9 degrees of afternoon heat you may or may not want, plus 2.3 extra wet days. That trade is the whole decision, and it settles which weekend you book.
SEPTEMBER AT A GLANCE · WAKULLA SPRING
Come for the drop between 88.6°F air and 70.3°F water, arrive before the 300-space lot fills, and keep the swim for the morning: September is hot, wet in bursts, and fully swimmable.
AVERAGE HIGH 88.6°F · SPRING WATER 70.3°F · 6.2 WET DAYS · 300 PARKING SPACES
Go for: water holding 70.3°F while the air hits 88.6°F, 12 hours 22 minutes of daylight on the 15th, and 3.8 fewer wet days than August.
Think twice before: driving out on a bright Saturday without an early start: 300 spaces serve one swimming area, and the gate closes when the lot fills.
Air: NOAA NCEI 1991–2020, Tallahassee station · Water: USGS gauge 02327000 · Facilities: Florida DEP inventory 2024
On this page
- September highs, lows and rain daysThe 1991–2020 normals
- How hot it gets, dawn to afternoon88.6°F days, 69.6°F nights
- Parking, crowds and what a visit costs300 spaces and the gate
- What to do at the park in SeptemberThe swim area, the boardwalk, the platforms
- A two-day plan built on the lightBoth days, hour by hour
- September or October?How the three months compare
- Is the month worth the drive?The verdict, for and against
- Wakulla Springs beyond SeptemberThe full park guide
Every figure here for the air comes from one thermometer: NOAA’s 1991–2020 monthly normals for station USW00093805 at Tallahassee, about 27 miles from the spring. Those normals describe air over a city with an airport, not the microclimate under the cypress. The water figure comes from a different instrument, the USGS gauge at the spring itself.
Wakulla Spring weather in September: average highs, lows and rain days
| September at Wakulla Spring | Figure | What it means on the ground |
|---|---|---|
| Average high | 88.6°F | Shade or water by early afternoon |
| Average low | 69.6°F | Mild at sunrise, no jacket |
| Rainfall | 4.91 in | Delivered in bursts, not drizzle |
| Days with 0.10 in or more | 6.2 | Roughly one day in five |
| Days with 1 in or more | 1.2 | About one real soaking a month |
| Daylight, Sep 15 | 12 h 22 min | Sunrise 7:20 a.m., sunset 7:43 p.m. |
| Spring water | 70.3°F | One USGS reading, September 11, 2026 |
NOAA’s National Centers for Environmental Information puts the September average high at 88.6°F and the average low at 69.6°F, with 4.91 inches of rain, over 1991–2020. Those are station normals off a real thermometer, USW00093805 at Tallahassee, roughly 27 miles north of the spring, not a reanalysis grid cell averaged across the county. Read them as the regional signal for the air, never as a reading taken at the boat dock.
Only 6.2 days in an average September record at least a tenth of an inch, and 1.2 days record an inch or more, which leaves roughly 24 days with next to nothing falling. The 4.91-inch total therefore arrives in lumps: one serious soaking, plus a handful of afternoons when the sky opens for an hour and then quits. A September trip loses hours to rain far more often than it loses days.
Dawn at 69.6°F and mid-afternoon at 88.6°F make a nineteen-degree day, and neither end of it asks for a jacket. Pack for water and sun instead: a towel, a dry shirt for the drive back, a hat for the two observation platforms, and shoes you can walk 285 feet of boardwalk in while soaked. One light layer covers the early hour at the cool end of the month.
On September 15 the sun rises at 7:20 a.m. and sets at 7:43 p.m., 12 hours 22 minutes apart, converted to local time from sunrise-sunset.org. Parked at 8:30 in the morning, you still hold eleven hours of daylight. We could not verify the park’s closing hour, so set your exit by the sun rather than by a posted time, and try to keep the 27-mile drive back to Tallahassee out of the dark.
How warm is Wakulla Spring in September?
The month’s ceiling and floor are 88.6°F and 69.6°F, and the spring sits almost exactly on the floor: 70.3°F, seven tenths of a degree above the average September low. That reading was taken at the vent on September 11, 2026, and it is an instantaneous measurement rather than an average of daily maxima, so treat it as the level the spring holds year-round, not as a September value that will drift with the season.
In practice you arrive in a T-shirt at nine and start hunting shade by one. Put swim gear on before you leave the car, because crossing a 300-space lot in 88.6°F air is the hottest thing you will do all morning. Keep a second dry shirt for later: a wet one in that humidity stops being pleasant about twenty minutes after you climb out, which is usually right when you start the walk.
Freezing nights are not something our source counts for September here, so we give no figure. What we can say is that the average low of 69.6°F sits 37.6 degrees above freezing, and the cold-weather layer can stay at home. The first genuinely cool dawns belong to the next month, where the average low drops to 58.8°F.
How busy is Wakulla Spring in September? Crowds, prices and the demand peak
Start with the number the state publishes: 300 parking spaces at Edward Ball Wakulla Springs State Park. When the lot fills, the gate closes, and that is what decides a bright Saturday, not a room rate. We found no occupancy series and no monthly lodging-rate series for this corner of Florida, so we crown no month cheap and no month expensive.
That changes what booking means. We found no reservation system for day use, and a single designated swim area serves everyone who gets through the gate, so the lead time that counts is the hour you leave your hotel, not the week you reserve. Book the bed, not the day: one night in Tallahassee turns a long day trip into a comfortable two-day visit, and our Florida lodging guide sorts the tiers.
We could not verify a lodging-tax rate for the county, so we give no percentage. The gate is the same story: floridastateparks.org answered our automated reads with a 403 on September 11, 2026, so we print no entrance fee and no opening hour, and a price quoted for another Florida park does not transfer to this one. Check the park’s own listing the week you travel, and carry a card.
One upgrade genuinely changes September, and it is the bed close enough to put you in the lot by half past eight. Nothing else you can pay for moves the day: the water holds 70.3°F at nine in the morning and at four in the afternoon, the boardwalk is 285 feet long whatever you spent, and the 300 spaces go first come. Our Florida cost guide puts that night in context.
Things to do at Wakulla Springs in September
September is the last month of the year when stepping into 70.3°F water counts as rescue rather than dare. The air averages 88.6°F, so the spring reads as pure relief. By October the afternoon average is 81.7°F and the dawn 58.8°F, and that same water starts asking something of you. Set against August, September also hands over 3.8 fewer days of measurable rain: nearly four extra mornings that hold.
The park the state counts is small and specific. Florida DEP’s 2024 facilities inventory credits Edward Ball Wakulla Springs State Park with 1 designated swimming area, 285 feet of boardwalk, 2 observation platforms, 0.2 miles of hiking trail and those 300 parking spaces. Florida law puts the spring in its top class, the Outstanding Florida Springs of Statute 373.802(5). That class covers every historic first-magnitude spring, as the Florida Geological Survey determines them, plus six named by hand in the law.
The month moves the air across all of it and leaves the water alone. In August the gap between average afternoon air and the spring runs 21.2 degrees, in September 18.3, and by October 11.4. The boardwalk, the two platforms and the fifth of a mile of trail are the parts that feel that swing, since they are walked in 88.6°F air. The swim area feels the same in September as it does in any other month.
We cannot price what is free in September, because our reads of the state parks site were refused on September 11, 2026. No entrance fee, no fee-free day and no opening hour came out of that source. What needs no reservation, once you are inside: the 0.2 miles of trail, the 285 feet of boardwalk, the two observation platforms and the single swim area. You walk up and use them.
Wakulla Spring in September: a two-day itinerary
Day one is pinned to the light. Leave Tallahassee by half past seven, be through the gate and parked by 8:30 with most of the 300 spaces still open. Swim first, while the air sits closer to its 69.6°F dawn than to its 88.6°F peak. Walk the 285 feet of boardwalk and both platforms between eleven and one, eat out of the sun, then give the late afternoon back to the water as the heat tips over.
Day two reverses the order: trail and platforms early, water from mid-morning, back on the road well before the 7:43 p.m. sunset. If the weather turns, remember that rain reaches 6.2 days out of thirty and brings an inch or more on only 1.2 of them, so most wet days cost an hour rather than a day. Thunder is the exception, and it ends the swim whatever the water is doing.
Wakulla Spring in September vs August and October
| August | September | October | |
|---|---|---|---|
| Average high | 91.5°F | 88.6°F | 81.7°F |
| Average low | 73.2°F | 69.6°F | 58.8°F |
| Rainfall | 7.60 in | 4.91 in | 3.24 in |
| Days with 0.10 in or more | 10.0 | 6.2 | 3.9 |
| Spring water | Near 70.3°F | Near 70.3°F | Near 70.3°F |
| Air-to-water gap | 21.2°F | 18.3°F | 11.4°F |
August runs hottest and wettest, 91.5°F over 73.2°F, with 7.60 inches of rain across 10.0 wet days. September steps down to 88.6°F and 69.6°F with 4.91 inches over 6.2 days. October is a different animal: 81.7°F afternoons, 58.8°F dawns, 3.24 inches on 3.9 days. The one line that refuses to move is the water, near 70.3°F in all three.
Shift four weeks later and you gain 6.9 degrees off the afternoon, 2.3 fewer wet days and 1.67 inches less rain. You lose the reason to get in, because against a 58.8°F October dawn the spring is warmer than the air. Shift four weeks earlier and August gives the strongest contrast of the three, 21.2 degrees, at a cost of 10.0 wet days. Our August guide makes that case in full.
Is September a good time to visit Wakulla Spring?
Yes for swimmers, for families who want one uncomplicated water day, and for anyone who would rather sweat at 88.6°F than shiver at a 58.8°F sunrise. No for walkers hoping to log miles, since the state counts 0.2 miles of trail. No, too, if you need a guaranteed dry two-day window booked weeks out: 6.2 wet days in thirty leaves real odds of losing an afternoon.
If the answer is no, take October. Rain drops by a third to 3.24 inches on 3.9 days, the afternoon settles at 81.7°F, and the boardwalk stops being an endurance test. Accept the trade: the swim becomes a choice instead of an escape, and you will want a layer at dawn. The wider Florida calendar sits in our best-time-to-visit guide.
No other month pairs an 18.3-degree fall from air into water with rain already down to 6.2 days: August has the bigger gap and 10.0 wet days, October the calm and only 11.4 degrees of contrast.
The last word
Florida’s own springs page names Wakulla for deep cave diving by researchers and scientists, a chance, the state writes, to probe depths where few will ever go. You will see none of that from the swim area, and you do not need to. What September gives you is 70.3°F water under 88.6°F air, and the trick is being parked before those 300 spaces go. Set the alarm for a 7:30 departure from Tallahassee, and eleven hours of daylight are yours by half past eight.
Sources & data for this guide
- September air normals, 88.6°F high / 69.6°F low / 4.91 in · NOAA NCEI monthly normals 1991–2020, station USW00093805, Tallahassee, FL · checked Sep 24, 2026
- Rain-day counts, 6.2 days at 0.10 in and 1.2 days at 1 in · same NOAA NCEI series · checked Sep 24, 2026
- August and October normals used in the comparison · same NOAA NCEI series, not estimates · checked Sep 24, 2026
- Daylight and sun times for September 15, converted from UTC to local time · sunrise-sunset.org · checked Sep 24, 2026
- Spring water at 70.3°F (21.3°C), one instantaneous reading · USGS National Water Information System, station 02327000 Wakulla Spring · checked Sep 24, 2026
- 300 parking spaces, 1 swimming area, 285 feet of boardwalk, 2 observation platforms, 0.2 miles of trail · Florida DEP Recreational Facilities Inventory, 2024 annual report · checked Sep 24, 2026
- Outstanding Florida Springs definition · Florida Statutes 373.802(5) · checked Sep 24, 2026
- Deep cave diving description · Florida DEP, Visit a Spring · checked Sep 24, 2026
- We could not read the park’s entrance fee or opening hours: floridastateparks.org returned 403 to our automated reads on Sep 11, 2026, and the FWC manatee page renders client-side. We therefore print no fee, no hour and no manatee count.