SoCal Pool Maintenance Calendar 2026 | Discount Pool Mart
SoCal pools never close. The work changes with the seasons. This Southern California pool maintenance calendar takes LA-area pool owners through the year month by month, from the spring algae surge to summer heat, fall Santa Ana winds, winter rain storms and the rain prep that comes before them.
40 years of local seasonal patterns. Discount Pool Mart has served pool owners across the San Fernando Valley, Simi Valley, Santa Clarita and Thousand Oaks for four decades. This calendar comes from the problems we see walk through our doors at the same time every year.
The SoCal Pool Maintenance Calendar on One Page
If you only want the Los Angeles pool maintenance schedule in short form, start here.
| Months | Typical conditions | Pool focus | Go deeper |
|---|---|---|---|
| Jan-Feb | Winter rain storms, cool water, light use | Baskets after storms, water level, steady circulation, covers | Safety and winter covers |
| Mar-Apr | Warming days, spring algae bloom | Brushing, skimming, gradually longer run times | Algae prevention |
| May-Jun | More sun, more swimmers, more evaporation | Frequent skimming, water level checks, solar cover | Solar cover guide |
| Jul-Aug | Peak heat, heatwaves, heavy use | Daily skim, frequent brushing, peak run time awareness | Summer clarity guide |
| Sep-Oct | Fall heat, Santa Ana winds, debris | Empty baskets often, skim and vacuum after wind | Vacuuming and poles |
| Nov-Dec | First storms, shorter days | Clear debris, adjust run times, heater and cover choices | Pump scheduling |
Why LA-Area Pools Never Get a Closing Season
Winterizing elsewhere vs. running all year here
Pool owners in places like New England winterize. They lower the water, blow out the lines, add winterizing chemicals and cover the pool until spring, all to keep frozen water from cracking the plumbing. Most LA-area basins rarely freeze, so local pools keep running through the whole year.
The one rule behind year-round pool care in Southern California
Here is why the calendar looks the way it does. Every month, you keep the water circulating, skim it, brush it and watch the water level. The tasks stay the same. The effort goes up and down.
Definition: Southern California pool season. It's the whole year. Swimming peaks from late spring through early fall, but the pool still needs care in the off months. Pump run time and cleaning frequency rise and fall with heat, wind and rain.
January and February: Winter Pool Care in Los Angeles
Rain season, cold water, empty pools
The region gets most of its rain in the cool season, and the NWS Los Angeles/Oxnard office issues storm, flood and wind alerts all winter. The water turns cold and hardly anyone swims.
Winter tasks that keep March manageable
- Empty the skimmer and pump baskets after every storm. Wet leaves pile up fast.
- Check the water level after heavy rain. An overfull pool can't skim properly.
- Keep the pump on a shorter but steady schedule. Problems start in still water.
- If you use a cover, clear standing water and debris off the top. Our safety cover guide covers cover types and California rules.
In my opinion, winter is the most underrated month on this calendar. Plenty of owners tune out in January, and March is when it catches up with them.
March and April: Spring Startup and the Algae Surge
When to open a pool in Southern California
In SoCal, a spring pool opening doesn't mean peeling off a winter cover after months of shutdown. It's a reset before swim season: a deep clean, an equipment check and a fresh water test. Late March into April makes sense for most owners, because that's when the water starts warming.
Why algae shows up as the days get longer
Every spring our stores see the same thing. Customers bring in samples of green water in late March and April. Warmer water, longer days and leftover winter debris give algae a head start, often before owners have stepped up their cleaning.
Your spring to-do list
- Brush the walls, steps and corners every week.
- Skim often and clean both baskets.
- Lengthen pump run time gradually as the water warms.
- Decide whether the cover stays on or comes off for the season.
Want more detail? Read our guide to stopping algae before it starts in SoCal and our walkthrough on testing your water with strips, drops or a digital kit.
May and June: Getting Ready for Swim Season
More swimmers, more sun, more debris
Longer days bring more swimmers, and with them come sunscreen, pollen and leaves in the water. Inland, dry air speeds up evaporation quickly.
Run longer, skim more, cover at night
Run the pump longer, skim several times a week and check the water level against evaporation. A solar cover cuts evaporation and holds heat overnight. Our solar cover sizing and care guide explains how to choose and use one.
Pre-summer readiness checklist:
- Baskets empty and lids secure
- Brush, pole and skimmer net in good shape
- Filter pressure normal, equipment running quietly
- Gates, fences and alarms working before the kids are out of school
That last item isn't optional. The CPSC's Pool Safely campaign reports that drowning is the leading cause of unintentional death for children ages 1 to 4. Look over our California pool fence requirements before summer arrives.
July and August: Peak Heat and Heavy Use
Heatwaves change your pool by the day
Hot water and strong sun burn through sanitizer faster and give algae room to spread. When the NWS posts heat advisories for the valleys, expect your pool to change from one day to the next, not one week to the next.
Midsummer routine
- Expect run time to hit its yearly peak.
- Skim daily and brush at least twice a week.
- Top off water lost to evaporation and splashing.
- Put the solar cover on overnight if evaporation keeps outpacing you.
For the full summer routine, see how to keep your pool crystal clear all summer.
September and October: Santa Ana Winds Pool Care and Lingering Heat
SoCal's fall can run hotter than summer
Inland heat often hangs on into early fall, and some of the year's hottest days can land in September or October. Your pool doesn't know the kids went back to school.
What Santa Ana winds blow into your pool
Santa Ana winds are strong, dry winds that blow from the inland deserts toward the coast, usually in fall and winter. They push leaves, palm fronds, dust and seed pods straight into backyard pools.
Cleanup after every wind event
- Empty the skimmer and pump baskets during and after each wind event.
- Skim floating debris before it sinks and stains.
- Vacuum settled dirt. See how to vacuum a pool by hand.
- Check the water level, since dry wind speeds up evaporation.
A sturdy telescoping pole makes all of this much easier. Compare options in our pool pole buying guide.
If ash falls: Wildfire ash calls for its own approach. Follow guidance written for ash cleanup, and call your local store if you're unsure.
November and December: Rain Readiness and Winter Run Times
Getting ahead of the first storms
Sweep leaves off the deck, empty the baskets and make sure deck water drains away from the pool. The season's first storm usually brings the most debris.
Shorter run times, but never zero
Cool water needs less circulation than August water, but it still needs some every day. Our pump scheduling guide shows how to set seasonal run times, and the pool automation guide explains how to change them from your phone.
Heat and covers for winter swimmers
Still want to swim in December? Compare a pool heat pump for LA conditions with gas heater operation, then use a cover to hold in the heat you pay for.
Seasonal Pool Maintenance in Los Angeles Varies by Neighborhood
Four decades behind the counter have taught us this much: none of these four areas has quite the same year. Let's break it down.
| Area | Seasonal pattern we see most | Biggest seasonal challenge | What to watch |
|---|---|---|---|
| San Fernando Valley | Long, hot summers | Heat and evaporation | Water level, algae in heatwaves |
| Simi Valley | Heavy fall debris | Wind-blown leaves and dust | Baskets after wind events |
| Santa Clarita | Wide temperature swings | Wind plus fall heat | Debris and quick algae starts |
| Thousand Oaks | Milder, more marine influence | Spring algae and tree debris | Brushing in shaded areas |
San Fernando Valley
Valley pools take some of the region's hardest summer heat. Owners who stay on top of skimming through July usually skip August's green-water panic.
Simi Valley
Fall is the busy season here. After a windy night, we often see customers come in for replacement skimmer baskets and nets.
Santa Clarita
Consider a typical Santa Clarita pool the morning after a fall wind event: a film of dust on the surface, leaves on the bottom and a jammed skimmer. Cleaning it up quickly keeps it from turning into an algae problem.
Thousand Oaks
Thousand Oaks tends to stay milder, but shade trees and spring warmth still make regular brushing a must.
Your Year-Round SoCal Pool Checklist
Weekly habits:
- Empty skimmer and pump baskets
- Skim the surface and brush the walls
- Check the water level
- Confirm the equipment runs normally
Seasonal changes: run the pump longer in spring and summer and shorter in winter. Put a cover on when it helps.
Step up your effort when:
- A storm hits: clear baskets, check the water level
- A heatwave arrives: skim daily, brush more
- Water turns green: treat green, yellow or black algae
- Water goes cloudy: read the five causes of cloudy water
For a printable weekly list, grab our Los Angeles pool maintenance checklist.
Next steps: visit or call your local Discount Pool Mart for seasonal supplies, plus installation and repair service from a team that has watched these seasons come and go for 40 years.
Frequently Asked Questions About SoCal Pool Care
Do you need to close your pool in Southern California?
No. Most of the region rarely freezes, so pools run year-round. You ease off in winter, but you don't shut down.
What does a monthly pool maintenance schedule look like in California?
Here is the pool care calendar for California's LA region, broken out as pool maintenance by month:
- Jan-Feb: clear storm debris and keep the water circulating.
- Mar-Apr: brush and skim hard to head off spring algae.
- May-Jun: increase run time and watch evaporation.
- Jul-Aug: skim daily and brush often in peak heat.
- Sep-Oct: clear wind debris fast.
- Nov-Dec: prep for rain and shorten run times.
How often does a pool need service in Southern California?
Weekly at a minimum. During heatwaves, Santa Ana winds and storms, check it every day or two.
Should I run my pool pump 24 hours a day?
Usually not. Run time should shift with the season and your pump type. Our seasonal run time guide walks you through setting a schedule.