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Map of Madison Blue Spring
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Madison Blue Spring

Florida, United StatesDirections
Extensive overhead cave system (26,000+ ft of mapped passage) entered ~30 ft down in the spring basin8–27 m (25–90 ft) depthShore entry

Madison Blue Spring at a glance

Madison Blue Spring is an advanced shore dive site in Florida, United States with depths of 7.6–27.4 m (25–90 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Channel catfish, Suwannee cooter (turtle), and Largemouth bass. Check the latest conditions and entry details before you go.

No window today· next: tomorrow 8:00–9:00 · moderate

Wind forecast for this hour · 21:00 · run 8 h ago
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Tap a factor for its source and model point

Site hazards: Extensive overhead cave system (26,000+ ft of mapped passage) entered ~30 ft down in the spring basin

Read the full hazards ↓

Dive windows this week

SunNo window

12 kn wind (12 kn wind)

Mon8:00–9:00 moderate, 11:00–12:00 moderate, 12:00–19:00 favorable

11 kn wind (11 kn wind)

Tue8:00–11:00 moderate, 11:00–19:00 favorable

9 kn wind (9 kn wind)

Wed10:00–11:00 moderate, 11:00–19:00 favorable

11 kn wind (11 kn wind)

Thu8:00–9:00 moderate, 10:00–13:00 moderate, 13:00–16:00 favorable, 16:00–19:00 moderate

10 kn wind (10 kn wind)

Fri8:00–12:00 moderate, 12:00–19:00 favorable

9 kn wind (9 kn wind)

Sat8:00–11:00 moderate, 11:00–19:00 favorable

11 kn wind (11 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wind forecasts. Numbers under each bar are daylight averages.

First light 7:17 · Sunrise 7:42 · Sunset 18:51 · some windows run past sunset

Source: Open-Meteo wind · updated 25 Oct, 13:23 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Madison Blue Spring

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Known for: Suwannee cooter (turtle), Largemouth bass, Bluegill
Best time: Year-round at 72 F; best visibility when the Withlacoochee River is low (typically late spring through fall droughts) — the park closes diving when the river floods the spring. Weekdays avoid swimmer crowds.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 87% of days have historically been favorable, wind has typically been 9 knots
  2. February, 89% of days have historically been favorable, wind has typically been 9 knots
  3. March, 89% of days have historically been favorable, wind has typically been 9 knots
  4. April, 94% of days have historically been favorable, wind has typically been 9 knots
  5. May, 96% of days have historically been favorable, wind has typically been 8 knots
  6. June, 93% of days have historically been favorable, wind has typically been 8 knots
  7. July, 99% of days have historically been favorable, wind has typically been 7 knots, historically most favorable
  8. August, 95% of days have historically been favorable, wind has typically been 8 knots
  9. September, 94% of days have historically been favorable, wind has typically been 8 knots
  10. October, 98% of days have historically been favorable, wind has typically been 8 knots
  11. November, 97% of days have historically been favorable, wind has typically been 7 knots
  12. December, 91% of days have historically been favorable, wind has typically been 8 knots

July has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

Fills & rentals nearby

No dive shops mapped within 25 km (16 mi). Know one? Add it to the map.

Data updated June 2026

Site details

Madison Blue Spring is a first-magnitude spring on the bank of the Withlacoochee River in Madison Blue Spring State Park, regularly voted among the best cave dives in the United States. The 82-ft-wide, 25-ft-deep basin leads to a cave entrance about 30 ft down that opens into more than 26,000 ft of mapped passage including famous rooms and tunnels along the gold line. Diving is restricted to certified cavern and cave divers with mandatory sign-in, two-diver teams, and no DPVs.

caveshore

Extensive overhead cave system (26,000+ ft of mapped passage) entered ~30 ft down in the spring basin — certified cavern/cave divers only, no open water or free diving. Hazards: silting, navigation complexity, flow changes, and periodic closures when the adjacent Withlacoochee River floods and turns the basin tannic. Solo diving and DPVs prohibited; dives must end one hour before sunset; swimmers share the basin in season.

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