BLUE SPRING · FLORIDA · AUGUST
In August the spring itself barely notices the season. The USGS gauge at the vent read 74.3°F (23.5°C) on September 11, 2026, and it reads close to that every day of the year. The air is what moves. The official August normal for the area is a 91.8°F high against a 75.3°F low, so the water sits 17.5 degrees under the afternoon. That gap is the entire reason people drive to a spring in a Florida summer.
August also sits in the wet half of the Florida year: 7.66 inches of rain, measurable rain on 11.7 days, and a full inch or more on 2.2 of them. Add a lot with 187 parking spaces that closes the gate when it fills, and the month rewards whoever sets the earliest alarm.
THE MONTH AT A GLANCE · BLUE SPRING · AUGUST
August gives you the year’s sharpest contrast between hot air and cool spring water, and it asks you to arrive early enough to park for it.
AIR 91.8°F · WATER 74.3°F · 11.7 RAIN DAYS · 187 PARKING SPACES
Go for: a 74.3°F swim under a 91.8°F sky, 3,050 feet of boardwalk, the canoe, kayak and tube launch, and light that runs to 8:05 p.m.
Think twice before: planning a long walking day. Rain falls on 11.7 August days, and when the 187 spaces are gone the gate closes.
Air: NOAA NCEI 1991-2020, Orlando Executive AP · Water: USGS gauge 02235500 · Facilities: Florida DEP 2024 inventory
On this page
- Average highs, lows and rain days in August91.8°F days, 7.66 inches of rain
- How cool the spring water feels against the air74.3°F water, a 17.5°F drop
- Parking and crowds on an August Saturday187 spaces, then the gate
- Swimming, tubing and the boardwalkOne swim area, 3,050 feet of boardwalk
- A two-day plan built around the heatSwim at eight, sit out one to four
- August against July and SeptemberHow the three months compare
- Is August a good month to come?Who should shift to September
Two numbers decide an August visit, and they pull against each other: the water holds near 74°F whatever the date, and the air does not. For the park’s layout, its trails and its cold-season story, our Blue Spring guide is the place to start. For the month just behind this one, July runs 0.1°F warmer by day and a touch wetter.
Blue Spring weather in August: average highs, lows and rain days
| August normal | Value |
|---|---|
| Average high | 91.8°F |
| Average low | 75.3°F |
| Day-to-night spread | 16.5°F |
| Precipitation | 7.66 inches |
| Days with 0.10 in or more | 11.7 |
| Days with 1 inch or more | 2.2 |
| Daylight, Aug 15 | 13 h 13 min |
| Spring water at the vent | 74.3°F (23.5°C), gauge reading |
Every air figure here comes from NOAA NCEI’s 1991-2020 monthly normals for station USW00012841, Orlando Executive Airport. That is a real thermometer about 27 miles from the spring, not a modeled grid cell, and the difference matters when two sources disagree by a couple of degrees. August there averages a 91.8°F high, a 75.3°F low and 7.66 inches of rain. Take those as the regional air rather than a reading taken at the swim steps.
An average August records at least 0.10 inch of rain on 11.7 days, about three days in eight. Only 2.2 of those clear a full inch, so most wet days are a soaking rather than a washout. We found no hourly series for the spring, so we will not promise you that the storms always arrive at three o’clock. Plan for one interruption in the day and carry a dry bag for phones and car keys.
The spread between 91.8°F and 75.3°F is 16.5 degrees, and almost all of it happens overnight. Dawn at 75°F with Florida humidity is not cool, so a fleece has no job in the bag. Pack a second shirt for after the swim, more water than you think you need for the walk back to the lot, and something with a brim. Towels dry slowly in air like that, so bring one per person and one spare.
On August 15 the sun rises at 6:53 a.m. and sets at 8:05 p.m. local time, 13 hours 13 minutes of daylight by the sunrise-sunset.org calculation. Light is not the constraint in this month, heat is, and the usable hours sit at either end: before ten in the morning, then again after six. Check the park’s closing time the night before if you plan to stay for the late block.
How warm is Blue Spring in August?
Warm is two separate questions here. The air answer is 91.8°F by day and 75.3°F at night, a 16.5-degree swing. The water answer is 74.3°F (23.5°C), the value the USGS gauge at station 02235500 returned on September 11, 2026. That is one instantaneous measurement, not a monthly average, and it stays close to that all year because spring water arrives from underground at a near-constant temperature. Between the afternoon air and the run, the body feels 17.5 degrees.
In practice, morning means a swimsuit under whatever you drove in. By two in the afternoon, with the air near 92°F and the humidity that comes with 7.66 monthly inches, shade and water are the only two cooling systems available. The swim reads as cold for the first half minute and as comfortable after that. Nothing you wear improves on being in it, so plan the dry clothes for the drive home and not for the middle of the day.
Frost is not part of an August conversation in central Florida. The normal low of 75.3°F is the warmest of the three months around it, above July’s 75.0°F and September’s 73.9°F. NOAA’s monthly normals carry no daily extremes, so we quote no record low and no count of cool nights. A T-shirt covers the coldest hour this month is likely to produce.
How busy is Blue Spring in August? Crowds, prices and the demand peak
August is the last stretch of the school summer, and it falls inside Florida’s wet season. We found no occupancy series and no monthly room-rate series for this corner of the state, so we crown no month expensive and no month cheap. What we can say is a calendar fact: pressure at a spring in August is a local day-trip phenomenon more than a hotel one, and it concentrates on weekends. Statewide spending tiers live in our Florida trip cost guide.
Start with the lot. The state counts 187 parking spaces at Blue Spring State Park, and when they are gone the gate closes, whatever the weather is doing. We could not verify what time that typically happens on an August Saturday, so the safe read is early rather than clever. The park also holds six cabins, and six is a small number in a Florida summer, though their rate and booking window are not something we could confirm.
On money at the gate, our cards go on the table. We could not read an entrance price or an opening hour for Blue Spring: the Florida state parks site answers automated requests with a 403, and the state’s manatee pages render only inside a browser. Fees vary park by park and season by season in Florida, so a number lifted from a different park would be a guess wearing a decimal point. Budget for an entrance charge without assuming its amount, and ask at the entrance station.
One line item genuinely changes an August day, and that is sleeping inside the fence. The park’s six cabins put you past the 187-space bottleneck before it forms, which turns a 6:53 a.m. sunrise into an option rather than a two-hour drive in the dark. Everything else that money buys this month is comfort you could have carried in a cooler. For beds outside the park, our Florida lodging guide sorts the regions.
Things to do in Blue Spring in August
August is the month when a flat 74°F stops being a curiosity and becomes the whole point. Under a 91.8°F sky, a spring run is air conditioning you can swim in, and the single designated swimming area the state counts is doing all of that work at once. Colder months invert the appeal, since the same water then feels warm against the air. Our manatee guide covers that side of the calendar.
Here is what the Florida DEP’s 2024 facilities inventory counts inside the park: 3,050 feet of boardwalk, 3 observation platforms, 1 designated swimming area, 1 launch for canoes, kayaks and tubes, 6 cabins and 187 parking spaces. The boardwalk is the spine of a visit at about 1.2 miles of walking there and back. No entrance fee and no operating hours came out of any source we could read, so those two blanks stay blank.
The vent temperature does not move with the calendar. The air above it does, and that is what makes a season. In August the distance is 17.5 degrees, from a 91.8°F normal high down to the 74.3°F reading. In September the same water sits under an 89.5°F normal, a gap of 15.2 degrees. Those 2.3 degrees sound small on paper, and they are the reason an August plan has to run early while a September plan does not.
On what costs nothing, we can only be straight about the limit of our reading. The boardwalk, the three platforms and the swimming area need no separate booking that we could find, but whether tubes and kayaks are rented on site at a price is exactly the detail the park’s own site would not serve us. Ask at the entrance station when you pay, and you will know before you have unpacked the car.
Blue Spring in August: a two-day itinerary
Day one runs against the heat, not through it. Sunrise at 6:53 a.m. makes a 7:30 arrival comfortable rather than heroic, and it settles the parking question before it is asked. Swim first, while the air is still near its 75.3°F overnight low. Walk the 3,050-foot boardwalk and the three platforms between nine and ten. Eat early, sit out the block from one to four when the air is closest to 92°F, and come back for light that holds until 8:05 p.m.
Day two puts the water first in another form, since the launch takes canoes, kayaks and tubes and a morning on the run keeps you wet without the walk back. If the sky turns, the normals say that happens on 11.7 days out of 31, and the honest move is usually to stay in the water. Rain changes nothing for a body already at 74°F. Lightning does, and a boardwalk is the wrong place for it. Our Florida basics guide has the storm rules.
Blue Spring in August vs July and September
| Normal (1991-2020) | July | August | September |
|---|---|---|---|
| Average high | 91.9°F | 91.8°F | 89.5°F |
| Average low | 75.0°F | 75.3°F | 73.9°F |
| Precipitation | 8.07 in | 7.66 in | 6.55 in |
| Days with 0.10 in or more | 11.9 | 11.7 | 9.8 |
| Spring water at the vent | About 74°F | About 74°F | 74.3°F measured Sept 11, 2026 |
On the thermometer, July and August are near-twins: 91.9°F against 91.8°F by day, 75.0°F against 75.3°F at night. The separation shows up in September, 2.3 degrees cooler by day, 1.11 inches drier across the month, and 9.8 days of measurable rain instead of 11.7. The spring stays near 74°F through all three, which is why the air column is the only one worth reading closely.
Shift four weeks forward and the ledger is small but real. You gain 2.3 degrees off the afternoon, an inch less rain and about two fewer wet days. You give up the 17.5-degree contrast at the water’s edge, a hair under July’s 17.6 and well above September’s 15.2. You also move deeper into the part of the state’s storm calendar that our best-time guide for Florida handles month by month. We measured daylight only on August 15, so we put no September figure against it.
Is August a good time to visit Blue Spring?
Yes, with one condition, and the condition is the alarm clock. If the plan is to be in the water, August is as straightforward as this park gets: 74.3°F at the vent, 91.8°F above it, and 13 hours of light to spread it across. If the plan is long walks, a picnic that lasts all afternoon or photography without sweat on the lens, this is the wrong month twice over, once for the 11.7 wet days and once for the 187 spaces.
September is the cheapest shift for anyone in that second group: 89.5°F days, 6.55 inches of rain instead of 7.66, and 9.8 measurable rain days. It is not a cool month and does not pretend to be, though two fewer wet days in four weeks changes how a two-day plan holds together. The genuinely dry stretch of the Florida year is a bigger jump, and our best-time guide lays out what it costs in water temperature nowhere and in crowds everywhere.
One thing belongs to August alone: the 17.5-degree drop the moment you go under, with 13 hours 13 minutes of daylight on the 15th to keep using it.
The last word
Pick the arrival time first and the rest of an August day falls into place behind it. The same gauge that read 74.3°F measured 168 cubic feet per second leaving the vent, and that volume is why the water stays clear through a month carrying 7.66 inches of rain: it is replaced faster than it can cloud. Florida law keeps its historic first-magnitude springs, as the Florida Geological Survey determines them, in a protected class called Outstanding Florida Springs. Arrive at seven, swim before nine, and hold the 8:05 p.m. sunset back for a second walk.
Sources & data for this guide
- August, July and September normals (1991-2020), station USW00012841 Orlando Executive AP, about 27 miles from the spring · NOAA NCEI monthly normals · checked Sep 24, 2026
- Rain-day counts (11.7 days at 0.10 in or more, 2.2 days at 1 in or more) · NOAA NCEI monthly normals · checked Sep 24, 2026
- Daylight of 13 h 13 min, sunrise 6:53 a.m. and sunset 8:05 p.m. on Aug 15, converted from UTC · sunrise-sunset.org · checked Sep 24, 2026
- Water temperature 74.3°F (23.5°C) and discharge of 168 cubic feet per second, single instantaneous reading · USGS National Water Information System, station 02235500 Blue Spring · read Sept 11, 2026
- 187 parking spaces, 1 designated swimming area, 1 canoe, kayak and tube launch, 3,050 feet of boardwalk, 6 cabins, 3 observation platforms · Florida DEP 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
- What we could not verify: we have no entrance fee, no opening or closing hour and no manatee count for Blue Spring. floridastateparks.org answered our automated reads with a 403, and the state’s manatee page renders only in a browser · checked Sep 24, 2026