What Key West, FL rainfall means for your gutters
Around 40.4 inches of annual rain puts this above the national middle. 5-inch gutters cope with ordinary rain here, but 6-inch is worth specifying on steep or large roofs, where run-off arrives faster than the gutter can carry it away.
| Annual rainfall | 40.4 inches |
|---|---|
| Recommended gutter | 6-inch K-style |
| Downspout every | 35 feet of run |
| Typical single-storey home | 4 downspouts |
| Installed cost, seamless aluminium | $7–$15 per linear foot |
| Typical 160-foot job | $1,125–$2,400 |
Climate figures are NOAA 1991–2020 normals from Key W International Airport, 1 miles away. Cost figures are typical local ranges, not a quote.
Why ice is not the issue in Key West, FL
January lows average 66°F and the system never sees a sustained freeze.
Ice is not a design consideration here. Seam integrity and UV exposure are what limit service life instead, which is where a seamless run genuinely outperforms sectional gutter.
When to clear gutters in Key West, FL
With 40.4 inches of rain a year and a distinct wet season, two clear-outs a year suits this climate — spring and again before November.
Nothing freezes here, so timing follows the rain rather than the calendar. Clearing before the wet season is what prevents overflow down the fascia — the damage in a no-freeze climate is rot, not ice.
Seamless gutter cost in Key West, FL
Installed seamless aluminium runs $7–$15 per linear foot in Key West, putting a typical 160-foot single-storey job at $1,125–$2,400. Rural rates run below the national average, though travel charges can offset that on longer call-outs.
The 6-inch profile recommended for this rainfall carries a higher material cost per foot than the smaller section, which is already reflected above. Roof height, fascia condition and the number of corners move the final figure more than the gutter itself does.
Gutter questions specific to Key West, FL
What size gutters do I need in Key West, FL?
Around 40.4 inches of annual rain puts this above the national middle. 5-inch gutters cope with ordinary rain here, but 6-inch is worth specifying on steep or large roofs, where run-off arrives faster than the gutter can carry it away. For a typical single-storey roof here, plan on about 4 downspouts, one roughly every 35 feet of run.
How much do seamless gutters cost in Key West, FL?
Installed seamless aluminium generally runs $7–$15 per linear foot locally, so a typical 160-foot single-storey job lands around $1,125–$2,400. Rural rates run below the national average, though travel charges can offset that on longer call-outs. These are typical ranges rather than a quote — the price turns on roof height, fascia condition and how many corners the run has.
How often should gutters be cleaned in Key West, FL?
Twice a year suits this climate, given roughly 40.4 inches of annual rain. Nothing freezes here, so timing follows the rain rather than the calendar. Clearing before the wet season is what prevents overflow down the fascia — the damage in a no-freeze climate is rot, not ice.
Do I need to worry about ice dams in Key West, FL?
January lows average 66°F and the system never sees a sustained freeze. Ice is not a design consideration here. Seam integrity and UV exposure are what limit service life instead, which is where a seamless run genuinely outperforms sectional gutter.
When is the best time to have gutters installed in Key West, FL?
Any time of year works here — there is no freeze window to plan around. Installers are usually busiest just before the wet season, so booking outside that gets you a better slot.
Are seamless gutters worth it compared with sectional?
Sectional gutter leaks at the joints, and every joint is a future failure point. Seamless runs are rolled to length on site so the only joints are at corners and outlets. With 40.4 inches of rain a year, fewer joints mainly means fewer places for the sealant to fail under sustained wetting.
What month should I book gutter cleaning in Key West, FL?
May is the month to aim for — September is the wettest month of the year here at 7.2 inches, and clearing debris before that is worth more than clearing it after. Rain is spread across roughly 5 months here, so a single annual visit tends not to be enough — split it either side of the wettest stretch.
When is the quietest time of year for gutters in Key West, FL?
February is the driest month locally. With no month averaging a freezing low, that is simply the best window to book installation or repair without working around weather.
Will an older Key West home need fascia repair as well?
Quite possibly. 39% of homes in Key West, FL were built before 1960 (US Census ACS), and gutters of that era were hung with spikes driven straight through the fascia board. Where a run has been overflowing for years the board behind it is often soft, and it has to be sound before new gutter can be hung — which is the most common reason a quote comes back above the headline $7–$15 per foot.
Does this apply if I live in an apartment or condo in Key West?
Only partly. Just 42% of units in Key West, FL are single-family detached (US Census ACS), so a large share of buildings here have gutters that are a building-wide responsibility rather than an individual owner's. On multi-unit buildings the run is longer, access often needs lift equipment priced separately, and the decision usually sits with an association or landlord.
Month-by-month gutter calendar for Key West, FL
September is the wettest month in Key West, FL at 7.2 inches, and February the driest. Rain is spread across 5 months of the year, so there is no single quiet season — inspection matters more here than one annual clean-out. No month averages a freezing low, so ice dams are not a design concern here.
| Month | Rain | High | Low | Gutter load | What to do |
|---|---|---|---|---|---|
| January | 1.8" | 76°F | 66°F | Low | Routine check of hangers, seals and slope |
| February | 1.5" | 77°F | 67°F | Low | Routine check of hangers, seals and slope |
| March | 1.5" | 80°F | 69°F | Low | Routine check of hangers, seals and slope |
| April | 2.1" | 83°F | 73°F | Low | Routine check of hangers, seals and slope |
| May | 3.1" | 86°F | 76°F | Moderate | Clear debris now, before the wet season starts |
| June | 4.2" | 89°F | 79°F | High | Inspect after heavy rain for overflow at corners and seams |
| July | 3.6" | 90°F | 81°F | Moderate | Routine check of hangers, seals and slope |
| August | 5.4" | 91°F | 81°F | High | Inspect after heavy rain for overflow at corners and seams |
| September | 7.2" | 89°F | 79°F | Peak | Heaviest flow of the year — confirm downspouts discharge away from the foundation |
| October | 5.7" | 86°F | 77°F | High | Inspect after heavy rain for overflow at corners and seams |
| November | 2.1" | 81°F | 72°F | Low | Routine check of hangers, seals and slope |
| December | 2.2" | 78°F | 68°F | Moderate | Routine check of hangers, seals and slope |
Monthly normals are NOAA 1991–2020 from KEY W INTL AP, 2 miles away. Gutter load is scored against this city's own wettest month, not a national average.
Key West, FL homes and what that means for gutter work
| Housing units | 14,574 |
|---|---|
| Built before 1960 | 39% |
| Built since 2010 | 4% |
| Single-family detached | 42% |
| Owner occupied | 49.2% |
| Median home value | $852,400 |
39% of homes here were built before 1960. On stock that age the fascia behind the gutter is often the real job — original hangers were spiked through it, and boards that have carried forty years of overflow usually need repair before a new run can be hung.
Only 42% of units here are single-family detached. On multi-unit buildings gutter work is usually a building-wide decision rather than a homeowner's, and access often needs lift equipment that is priced separately.
Housing figures are US Census Bureau ACS 2024 5-year estimates.
Key West gutter cost calculator
Adjust the run length, material and storey count for your own property. Figures are adjusted for Key West labour rates and the 6-inch profile this city's rainfall calls for.
Gutter cost estimator for Key West, FL
Typical installed ranges. Not a quote — the final figure depends on fascia condition, access and how many corners the run has.
A typical single-storey home runs 150–200 ft.
Estimated total
$1,425–$3,050
About $9–$19 per linear foot installed
| Line item | Estimate |
|---|---|
| Aluminium gutter, 160 ft | $1,075–$2,350 |
| 4 downspouts | $200–$425 |
| Remove and dispose of existing gutter | $150–$300 |
| Total | $1,425–$3,050 |
Gutter work available in Key West, FL
Installers in the Key West network cover seamless installation formed on site, repairs to leaks, sagging and storm damage, and full replacement. The 6-inch profile and 4 downspouts set out above is what a quote here should be based on. See what each service involves.

Signs You Need Seamless Gutter Repair or Installation
- Frequent clogging
- Visible cracks or splits
- Gaps between gutters and fascia boards
- Water pooling around your foundation
- Rust spots or peeling paint on your gutters
Which gutter material suits Key West, FL
Neither ice nor volume forces the choice here
At 40.4 inches of annual rain neither ice nor volume is the limiting factor, so material is mostly a budget and appearance decision. Standard .027 aluminium is adequate and is what most local quotes assume.
The failure mode to watch in a dry climate is UV on the finish and sealant at the corners and outlets, not corrosion — expect to re-seal joints sooner than a wetter climate would need.
Copper costs several times aluminium and is chosen for appearance and lifespan rather than performance. It needs compatible fasteners and hangers throughout — copper in contact with steel or aluminium corrodes galvanically, which is the most common way an expensive copper run fails early.