Pensacola, FL rainwater: 54,921 gallons off a roof
How much rain a roof in Pensacola, FL collects
54,921gallons a year
That is a 1,500 sq ft asphalt roof under Pensacola, FL's normal 69.1 inches of rain, about 795 gallons for every inch that falls.
In Pensacola, FL a single barrel does most of the work. Storms come often enough that a small tank refills before it runs dry, and a bigger one would mostly sit full.
Rainfall: NOAA 1991-2020 climate normals, the Pensacola 1.9 Ne station (2.1 mi away). Pensacola, FL ranks 5th wettest of the 173 cities covered in Florida.
Month by month in Pensacola
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 5.60 | 4,451 | |
| Feb | 4.73 | 3,759 | |
| Mar | 5.29 | 4,205 | |
| Apr | 5.35 | 4,252 | |
| May | 4.22 | 3,354 | 16 |
| Jun | 7.22 | 5,738 | |
| Jul | 7.61 | 6,048 | |
| Aug | 8.38 | 6,660 | |
| Sep | 6.46 | 5,134 | |
| Oct | 4.30 | 3,418 | 6 |
| Nov | 4.45 | 3,537 | |
| Dec | 5.49 | 4,363 |
Aug is the wettest month (8.38 in, 6,660 gal off the roof); May the driest (4.22 in). Garden shortfall is what a 200 sq ft vegetable bed needs beyond the rain that lands on it, April to October.
Barrel or cistern in Pensacola?
Best fit: one 55-gallon barrel, which delivers about 19 gallons to the garden in a normal year (84.7% of its need).
If you buy one, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Pensacola's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 19 | 53,687 |
| 110 gal | 19 | 53,687 |
| 165 gal | 19 | 53,687 |
| 275 gal | 19 | 53,687 |
| 550 gal | 19 | 53,687 |
| 1,000 gal | 19 | 53,687 |
| 1,500 gal | 19 | 53,687 |
| 2,500 gal | 19 | 53,687 |
| 5,000 gal | 19 | 53,687 |
Simulated storm by storm through a normal year using the station's count of days with 0.1 in or more of rain each month.
Is rainwater collection legal in Florida?
Legal. Florida approves onsite non-potable use of rainwater for landscape irrigation, vehicle washing, filling pools and fountains and, in some local jurisdictions, toilet/urinal flushing (Florida Plumbing Code). No state storage cap or registration for non-potable collection.
Checked against the current source on 2026-11-06. Source