Pool closing · Georgia
When to Close Your Pool in Savannah, GA: Deadline, Window & Checklist
Last updated: July 15, 2026 · Model window year: 2026 · dates · checklist · FAQ
Plan to close your Savannah pool by November 17. The local 7-day mean temperature drops out of the algae-risk zone around November 7, and NOAA normals put the first 32°F freeze near November 30 — winterize between those dates and the water goes under the cover cold, clean, and easy to reopen. Below: today's water estimate, the full closing window, and a step-by-step winterizing checklist.
Savannah closing dates at a glance
| Closing window | November 7 – November 17 |
|---|---|
| Close by (deadline) | November 17 |
| First freeze, 50% probability | November 30 |
| Open by (recommended) | March 7 |
| Opening window | February 28 – March 21 |
| 61°F crossing (7-day mean) | March 21 |
| Swim-season length (80°F+ days) | 173 days |
| NOAA normals station | Savannah International Airport · 7.2 mi · 46 ft |
A classic four-season pool calendar: open early into cold water, close late into cold water, and Savannah's 173 days of prime swimming sit safely in between.
Put dates aside and follow the water: the Savannah curve says roughly 65°F by mid-April, 79°F by mid-June, 82°F in mid-August, then back down through 71°F in mid-October. The summer ceiling sits near 83°F, and every window above is just a line drawn on this curve.
The 12-step Savannah winterizing checklist
A closing is a plumbing project with a chemistry warm-up. Start a few days ahead of your target date, keep every dose per its product label, and don't skip the photographs — spring-you reassembles from them.
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Balance the water a few days ahead
Start midweek for a weekend close: bring alkalinity and pH into their label ranges and let the water settle. What you seal under the cover is what the pool soaks in until spring.
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Deep-clean the pool
Skim, brush walls and steps, and vacuum carefully. Any leaves or algae you seal under the cover become spring's chemistry problem, so closing day cleanliness pays twice.
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Service the filter one last time
One final filter service per the manual — cartridges rinsed and stored dry indoors, sand or DE backwashed. Winter turns trapped gunk into concrete.
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Apply winter chemicals per label
Add a winterizing kit or your usual closing chemicals exactly as their labels direct for your volume, with the pump still circulating so everything distributes before shutdown.
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Lower the water level
Drop the level as your cover manufacturer specifies — typically below the skimmer mouth for solid covers. Never drain a pool fully; groundwater pressure can damage the shell.
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Blow out the lines and plug returns
Air through every line — skimmer, returns, cleaner — until each blows dry mist, plugging returns while the air still pushes. Nothing else on this list protects as much plumbing per minute.
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Protect the skimmer
Install a skimmer guard bottle (or a plug rated for your skimmer) so ice that forms there crushes the sacrificial piece instead of cracking the skimmer body.
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Add pool antifreeze where blowouts fall short
If any line can't be verified dry, add pool-grade antifreeze per its label. Use only pool antifreeze — automotive products don't belong in pool plumbing.
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Drain the equipment
Open the drains on everything that holds water and let the pad empty completely. Cartridges and small equipment overwinter far better on a garage shelf than outside.
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Set the air pillow and cover
Float a centered air pillow, then land the cover and secure it the way its design intends — bags, cable, or straps. Ice sheets need somewhere to collapse inward, and the pillow is that somewhere.
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Calendar the off-season checks
Set a monthly reminder from November 17 to spring: check cover tension, pump off standing water, and glance at the water level. Fifteen minutes a month protects the whole closing job.
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Remove and store ladders and rails
Pull ladders, rails, and the diving-board hardware; rinse, dry, and store them out of the weather. Anchor sockets get a dab of protectant so spring bolts turn freely.
What to buy before the rush
A small stack of supplies turns the checklist above into a single-weekend job. Buy before Savannah's November rush and the whole list ships at leisure instead of sprinting.
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Expansion plugs + skimmer guard
Seals blown-out lines and sacrifices itself to skimmer ice.
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Pool antifreeze
For lines you can't verify dry — pool-grade only, per label.
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Winter closing kit
Closing chemistry in one box, dosed by pool volume.
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Air pillow
Centers under the cover so ice pushes inward, not outward.
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Winter cover
Sized to overlap; the cheapest insurance the pool wears all winter.
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Cover pump
Solid covers collect rain all winter; this is the drainage plan.
How Savannah compares locally
Savannah closes in the earliest quarter of Georgia's calendar. Neighbors run close: Beaufort (40 mi away) models its deadline at November 17 (the same day vs Savannah's November 17), while Brunswick (63 mi) shows November 25. The spring mirror of this page is the Savannah opening guide, and the season overview draws both windows on a single bar.
The instrument behind this page is Savannah International Airport, 7.2 miles north of Savannah — the closest station publishing complete 1991–2020 daily temperature normals. Thirty years of its readings set every date above; your own yard adds or subtracts a degree with shade, wind, and pavement, which is what the window's width is for.
Field notes for Savannah owners
What comes indoors
Cartridges, the cover pump when idle, chemical containers, and anything with a small motor overwinter better in the garage. Cold cycling is hard on plastics and seals; shelf space is cheaper than replacements. Label a single bin now and spring assembly becomes a scavenger hunt with a map.
The mesh-cover spring surprise, prevented in fall
Mesh-covered pools green up early because late-winter sun plus nutrient-carrying meltwater reaches the water. The fall counter-moves: close late and cold, dose the winter kit exactly per label, and plan an early-spring peek under the cover rather than a Memorial Day reveal.
Blowout first, antifreeze second
Air is the only guaranteed freeze protection: a line that's verifiably dry cannot burst. Antifreeze (pool-grade, per label) is the fallback for lines you can't confirm — long runs, low spots, water-feature plumbing. Doing antifreeze instead of a blowout, rather than in addition, is how most cracked returns happen.
Savannah pool closing FAQ
What temperature should water be to close a pool?
Cold enough that biology has clocked out — below 65°F and falling, ideally low 60s. The widget above tracks Savannah's actual water; the normals say the durable cool-down arrives near November 7, and anything inside the window to November 17 closes clean.
Can you close a pool too early?
Yes — it's the most common closing mistake. Seal 70°F water under a cover and algae keep growing in the dark all autumn; the spring opening turns green and expensive. In Savannah, hold off until the cool-down near November 7 before covering.
Do I need antifreeze in pool lines?
It depends entirely on your confidence in the blowout. Lines that blew fully dry need nothing; anything uncertain — low runs, water features, a stubborn cleaner line — gets pool-grade antifreeze at the label's rate per foot. With Savannah's freeze clock starting near November 30, uncertainty is the thing to eliminate.
How far should I drain my pool for winter?
Less than most people think. Below the skimmer opening is the classic solid-cover target; mesh covers often specify higher water. The cover's own manual wins every argument, and "drain it completely" is never the answer — empty shells pop out of wet ground.
What happens if you don't winterize a pool?
The repair list writes itself in order of cost: heater heat exchanger, pump housing, filter tank, then every fitting the ice reached — discovered one leak at a time in spring. Around Savannah the exposure begins near November 30, and each skipped checklist step above is one more candidate for that list.
When is the last safe date to close in Savannah?
Our model's practical deadline is November 17 — set by the cool-down plus ten days (the freeze normal, November 30, leaves room to spare). Push much past it and you're winterizing in freeze-warning weather, rushing the blowout, and hoping the cover goes on before the first hard night. Inside the November 7–November 17 window, none of that drama applies.
Email me when Savannah hits the closing window
Data: NOAA 1991–2020 climate normals via Savannah International Airport (7.2 mi); live outlook by Open-Meteo. Full attribution on the sources page. Model assumptions and error bars on methodology.