Estero, FL rainwater: 42,435 gallons off a roof
How much rain a roof in Estero, FL collects
42,435gallons a year
That is a 1,500 sq ft asphalt roof under Estero, FL's normal 53.4 inches of rain, about 795 gallons for every inch that falls.
In Estero, 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 Ft Myers Sw Fl Rgnl Ap station (8.1 mi away). Estero, FL ranks 127th wettest of the 173 cities covered in Florida.
Month by month in Estero
| Month | Rain (in) | Off the roof (gal) | Garden shortfall (gal) |
|---|---|---|---|
| Jan | 2.36 | 1,876 | |
| Feb | 1.49 | 1,184 | |
| Mar | 1.92 | 1,526 | |
| Apr | 1.87 | 1,486 | 309 |
| May | 3.02 | 2,400 | 166 |
| Jun | 10.33 | 8,210 | |
| Jul | 8.56 | 6,804 | |
| Aug | 8.75 | 6,955 | |
| Sep | 8.49 | 6,748 | |
| Oct | 3.11 | 2,472 | 155 |
| Nov | 1.89 | 1,502 | |
| Dec | 1.60 | 1,272 |
Jun is the wettest month (10.33 in, 8,210 gal off the roof); Feb the driest (1.49 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 Estero?
Best fit: 2 linked 55-gallon barrels, which delivers about 552 gallons to the garden in a normal year (87.7% of its need).
If you set one up, a 55-gallon barrel with a downspout diverter is the whole job. Check that the overflow points away from your foundation, because most of Estero's roof water will pass straight through it.
| Tank | Water used (gal/yr) | Spills over (gal/yr) |
|---|---|---|
| 55 gal | 474 | 40,850 |
| 110 gal | 552 | 40,773 |
| 165 gal | 552 | 40,773 |
| 275 gal | 552 | 40,773 |
| 550 gal | 552 | 40,773 |
| 1,000 gal | 552 | 40,773 |
| 1,500 gal | 552 | 40,773 |
| 2,500 gal | 552 | 40,773 |
| 5,000 gal | 552 | 40,773 |
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