GILCHRIST BLUE SPRINGS · MAY · THE MONTH IN NUMBERS
Late spring on this stretch of the Santa Fe River has one plain tell, and it is the thermometer. May averages a high of 87.4°F, nearly six degrees above April, while rainfall stays modest at 3.08 inches across the whole month. Hot air over a spring run that stays cool whatever the calendar says: that pairing is the case for coming now rather than waiting.
What May takes away is the cool morning. Lows average 62.6°F, seven degrees up on April, so the dawn chill that made an early spring swim a dare has gone. What it holds off is June, with 7.56 inches of rain across eleven wet days. Everything below is dated to the month; the wider Florida calendar sits in our best-time guide.
THE MONTH AT A GLANCE · MAY
May gives you the warmest air of the year’s dry half, 87.4°F by afternoon over just 4.5 wet days, four weeks before June turns the sky on.
AVG HIGH 87.4°F · 3.08 INCHES OF RAIN · 13H 43M OF DAYLIGHT ON MAY 15
Go for: long warm afternoons in cool spring water, daylight running to 8:18 p.m. on the 15th, and a rain map still much closer to April’s than to June’s.
Think twice before: counting on a cool morning or a quiet Saturday: nights average 62.6°F, and hot dry weekends are when swimming holes fill.
Normals: NOAA NCEI 1991-2020, station USW00012816 · Daylight: sunrise-sunset.org · full sources at the end
On this page
- Average high, low and rain days in May87.4°F, 62.6°F and 3.08 inches
- How warm it gets, morning and afternoonA 24.8-degree swing
- Crowds and prices in MayWhat we can price and what we cannot
- Things to do at the spring in MayThe run, the river and Ginnie Springs upstream
- A two-day plan on the Santa FeTwo days built on the light
- May, April or June?How the three months compare
- Is May a good time to go?Our verdict, and who should shift
Two limits before the numbers. We could not verify the park’s entry fee, its opening hours or a measured water temperature at the vent, so we quote none of them. And every air figure here is a 30-year normal rather than a forecast for the May you are booking.
Gilchrist Blue Springs weather in May: average highs, lows and rain days
| Measure | May normal |
|---|---|
| Average high | 87.4°F |
| Average low | 62.6°F |
| Monthly precipitation | 3.08 in |
| Days with 0.10 in or more | 4.5 |
| Days with 1 in or more | 1.0 |
| Daylight on May 15 | 13h 43m · 6:35 a.m. to 8:18 p.m. |
The numbers come from NOAA NCEI’s 1991-2020 monthly normals for station USW00012816 at Gainesville Regional, a real gauge with a real thermometer rather than a reanalysis grid cell. That station is the nearest official record, and it is the same one that serves Ginnie Springs a few miles up this stretch of the Santa Fe River. A shaded riverbank will not match a runway gauge to the degree, but the month’s shape is the month’s shape: 87.4°F by day, 62.6°F at night, 3.08 inches of rain.
Measurable rain falls on 4.5 days in an average May, roughly one day in seven, and one day in the month gets an inch or more. Read together, those two counts say the 3.08 inches arrives in a handful of episodes rather than as steady gray. The pattern that soaks north Florida almost every afternoon is a June arrangement, and June records 11.0 wet days.
Between the average high and the average low sits 24.8 degrees, and that gap does the packing. Afternoons ask for swim clothes and shade, nothing more. Dawn and the hour after you climb out wet ask for a long sleeve and a towel that is genuinely dry. Water shoes belong in the bag too, because limestone underfoot does not soften with the season.
On May 15 the sun rises at 6:35 a.m. and sets at 8:18 p.m., giving 13 hours 43 minutes of daylight. That evening margin is the month’s quiet advantage: leave the water at six and you still have two hours of light for the drive, dinner or setting up camp. Start at eight in the morning and you buy a cool hour before the heat arrives.
How warm is Gilchrist Blue Springs in May?
Highs average 87.4°F and lows 62.6°F, a swing of 24.8 degrees between the coolest hour before dawn and the hottest stretch after lunch. Neither figure is an extreme reading. Both are the 30-year average of every May day recorded at Gainesville Regional, which means individual afternoons run several degrees either side.
In practice, a morning in the low 60s on a riverbank is a coffee-and-fleece affair rather than a swim. By mid-morning the air is climbing toward that 87.4°F afternoon, and the only sensible clothing is the kind you can get wet in. Put the paddling and the walking early, and save the water for the hours when the contrast is at its widest.
Freezing nights are not a May question here: we found no count of them in the station’s May normals, and an average low of 62.6°F leaves no room for one. The cold in this month comes from below, not above. A Florida spring holds a near-constant temperature all year, and we could not verify the measured figure for this vent, so we give none. Plan for cool water regardless of the heat over it.
How busy is Gilchrist Blue Springs in May? Crowds and prices
May is the hinge of the north Florida year. By rainfall it still belongs to the dry half, 3.08 inches against June’s 7.56, and by temperature it is the first month when the air makes a cold spring the point of the drive rather than a curiosity. We found no occupancy series and no monthly room-rate series for Gilchrist County, so we crown no month cheap and no month expensive.
The same gap applies to booking. We could not verify how far ahead the campsites fill in May, so we give no lead time in weeks. What the weather says is simpler: swimming holes fill on hot dry weekends, and with only 4.5 wet days in 31 most May Saturdays arrive in exactly that condition. A Tuesday is the one lever a visitor fully controls.
We could not verify Gilchrist County’s lodging-tax rate either, so we give no percentage. Build the budget the way our Florida trip-cost guide does, then add the park’s own gate charge, published at the entrance and not confirmed by us for this season.
The one place money genuinely changes the month is distance. A bed close enough to put you at the river early buys the cool end of a 24.8-degree day. Arriving at noon spends that same day in 87-degree air, and no amount spent on a better tube, a bigger cooler or a faster car buys it back. Driving logistics live in our getting-around guide.
Things to do in Gilchrist Blue Springs in May
May is the first month of the year when the air turns the water into the reward. At April’s average high of 81.5°F a swim is a decision. At 87.4°F it is the reason you came. Set against June, the difference is the sky: an afternoon here is not organized around watching a storm build.
The park sits on the Santa Fe River in Gilchrist County, and Ginnie Springs lies a few miles up the same stretch of that river, close enough to share a weather record. Check with the operators for acreage, boardwalk length, parking capacity and gate prices before you drive. For the swimming-and-floating context across the state, our things-to-do guide and the family guide do that work.
What this month changes is the contrast rather than the spring. The run holds its temperature through the year; the air above it does not, and in May it sits roughly six degrees warmer by afternoon than April’s average and 24.8 degrees above its own dawn. That gap is what makes the first ten seconds a shock and the hour after it the best part of the day. Bring a towel and pick a sunny patch to reheat in.
On the free side of the ledger we can only confirm the light. Sunset at 8:18 p.m. on the 15th adds evening hours that the same trip would never get in midwinter, which is time on the bank at no cost once you are through the gate. Any fee-free day the park may run in May is not something we were able to check.
Gilchrist Blue Springs in May: a two-day itinerary
Day one runs on the light. Be on the river early, while the air is still near that 62.6°F low and a long sleeve makes sense. Swim through the late morning, eat in the shade and sit out the peak of the 87.4°F afternoon. Back in the water around four, out by six, and on May 15 you still have until 8:18 p.m. before the light goes: enough for a slow drive and a proper dinner.
Day two belongs to the Santa Fe itself, with a paddle in the cool early hours and the spring again after lunch. If yours is one of the 4.5 wet days, flip the order and treat the rain as an episode rather than a day, since one inch-or-more day and 3.08 inches total say the month delivers its water in bursts. If that single heavy day is the one you drew, take the drive into Gainesville and keep the spring for tomorrow.
Gilchrist Blue Springs in May vs April and June
| Measure | April | May | June |
|---|---|---|---|
| Average high | 81.5°F | 87.4°F | 90.3°F |
| Average low | 55.5°F | 62.6°F | 69.5°F |
| Precipitation | 2.74 in | 3.08 in | 7.56 in |
| Days with 0.10 in or more | 3.8 | 4.5 | 11.0 |
April is the cooler month by a clear margin, 81.5°F against 87.4 by day and 55.5°F against 62.6 at night, with a near-identical rain map at 2.74 inches. June is the hotter one at 90.3°F, but the real separation is what falls from the sky: 7.56 inches over 11.0 wet days, nearly two and a half times May’s total. May sits between the two, with April’s rain and something close to June’s thermometer.
Shift four weeks back and you gain a genuinely cool night and lose the heat that makes cold water feel like a prize. Shift four weeks forward and you gain 2.9 degrees of afternoon while losing six and a half dry days, plus 4.48 inches of extra rain. That trade is the whole argument for the last week of May over the first week of July.
Is May a good time to visit Gilchrist Blue Springs?
For a trip built around getting in the water, May is the clearest yes in the first half of the year: 87.4°F afternoons, 3.08 inches of rain spread over 4.5 days, and nearly fourteen hours of light to spend. Campers who sleep badly in warm air should read the 62.6°F low as a warning shot, because June adds another seven degrees to the night.
If the answer is no, the month to prefer is April rather than June. It keeps rainfall at 2.74 inches over 3.8 days, drops the night to 55.5°F, and charges you six degrees of afternoon for the privilege. The same numbers run in full on our April page. June is the month to avoid outright if rain decides your trip.
Only May pairs afternoons in the high 80s with fewer than five wet days and daylight that lasts until 8:18 p.m.
The last word
Book a weekday, pack a long sleeve for the 62.6°F dawn, and let the afternoon make its own case. If the real choice is May or June, judge it on the nights rather than the days: June averages a low of 69.5°F against May’s 62.6, and that difference of nearly seven degrees is what decides whether a tent on the Santa Fe reads as camping or as endurance.
Sources & data for this guide
- May normals: high 87.4°F, low 62.6°F, 3.08 in · NOAA NCEI monthly normals 1991-2020, station USW00012816, Gainesville Regional · checked Sep 24, 2026
- Wet-day counts: 4.5 days at 0.10 in or more, 1.0 day at 1 in or more · same NOAA NCEI series · checked Sep 24, 2026
- April and June normals used in the comparison · NOAA NCEI 1991-2020, same station · checked Sep 24, 2026
- Sunrise 6:35 a.m., sunset 8:18 p.m. and 13h 43m of daylight on May 15, converted from UTC to local time · sunrise-sunset.org · checked Sep 24, 2026
- We could not verify the park’s entry fee, opening hours, campsite capacity or a measured water temperature at the vent, and we found no lodging-tax rate or occupancy series for Gilchrist County · we quote none of them
- Normals are 30-year averages, not a forecast: any single May can run hotter, wetter or both · check the park and the weather service before you drive
To plan your stay
- Best Time to Visit Gilchrist Blue Springs: Month-by-Month Highs, Rain and the Quietest Weeks
- Gilchrist Blue Springs in April: Weather, Rain Days and a Two-Day Plan
- Gilchrist Blue Springs in June: Weather, Rain Days and How It Compares to May and July
- Gilchrist Blue Springs in March: Weather, Crowds and How It Compares to February and April