Generic home maintenance advice doesn’t fit San Diego well. Most home maintenance calendars are written for places with hard winters and humid summers — they tell you to winterize your pipes and check your furnace before the first freeze. San Diego homeowners don’t deal with freezing pipes, but they deal with marine layer mold, Santa Ana wind fire risk, clay soil movement, and intense UV that degrades exterior surfaces faster than almost anywhere else.

Here’s a 12-month maintenance calendar built for San Diego County specifically.

January–February: post-rain assessment

San Diego’s rain season runs December through March. After any significant rainfall, do a quick assessment.

Inside:

  • Walk through attic or check ceiling for any new water stains
  • Look at window seals — any new fogging between panes indicates the seal has failed
  • Check under sinks for slow drips that have worsened from pressure changes

Outside:

  • Inspect stucco for new cracks — rain infiltration makes hairline cracks visible as dark lines
  • Walk the perimeter of the house where it meets the ground. Any new pooling or drainage issues?
  • Check fence posts and deck ledger boards for water infiltration signs after saturation

Doors and windows:

  • After extended rain periods, note which doors stick — these are the humidity-sensitive ones that need sealing or adjustment in spring

March–April: pre-summer prep

March and April are the sweet spot for exterior work — dry enough to paint or seal, cool enough to be comfortable working outside.

Deck and fence:

  • Do your annual deck inspection (see our full deck maintenance guide)
  • Apply stain or sealer to any wood deck or fence that passed inspection but is due for a coat
  • Check patio covers and shade structures for any winter damage

Exterior caulk and seals:

  • Re-examine all exterior window and door caulk — this is the ideal time to replace any that cracked or pulled away over winter
  • Check exterior hose bib connections and any irrigation valve boxes for leaks

Roof (visual from ground):

  • Look for any displaced or missing tiles visible from grade level
  • Check for debris buildup in valley areas

May–June: marine layer season begins

Homeowner on a ladder inspecting roof edge and gutter at a San Diego home in winter, overcast sky behind

The “June gloom” and marine layer season brings elevated humidity, particularly within five to ten miles of the coast.

Moisture and mold:

  • Check bathroom caulk and grout for any mold growth that’s starting — the early season is easier to address than late summer
  • Look in closets and behind furniture near exterior walls for early mold spots
  • Ensure bathroom and kitchen exhaust fans are working (test by holding a tissue to the grille — it should hold against the suction)

Doors:

  • Wood doors that began sticking in January may need minor adjustment now as humidity increases

Gutters:

  • Clean any debris from winter if you haven’t already

July–August: peak summer

The driest months in most San Diego communities — ideal for any outdoor project that needs dry conditions.

Fire season prep:

  • Clear dead vegetation and brush from the five-foot zone around the home foundation
  • Clean pine needles and dry leaves from roof valleys, gutters, and under decks
  • Check that any wood fencing within 10 feet of the structure is in good condition with no dry rotting sections (dry rot creates perfect tinder)
  • Ensure your dryer exhaust vent isn’t obstructed — lint fires spike in summer when machines run harder for laundry

Exterior painting:

  • If you planned any exterior touch-ups, July and August give you the driest conditions. Don’t paint during Santa Ana wind advisories.

Tip: In fire-prone areas of San Diego (Rancho Bernardo, Ramona, Julian, Alpine, Lakeside, Jamul), the State Fire Safe Regulations require clearance zones around structures. Check CalFire’s current requirements — they’ve been updated several times in recent years.

September–October: Santa Ana season

Santa Ana events typically start in September and peak in October–November. Extremely low humidity and high winds are the defining conditions.

Before any Santa Ana event:

  • Clear debris from roof and gutters
  • Move loose patio furniture or decorative items into the garage — Santa Ana winds regularly top 40–60 mph

During Santa Ana conditions:

  • Don’t do any grinding, welding, or outdoor burning
  • Check garage door seals — wind-driven debris can damage seals and create gaps

After Santa Ana season:

  • This is the ideal time to pressure wash driveways, paths, and fences — the dry conditions that caused dust buildup in summer are over, and the weather is still warm enough to work comfortably.

November–December: pre-rain prep

The goal in November is to make sure the home is sealed and ready before the rain arrives.

Roof and drainage:

  • Clean gutters — this is the most important single task before rain season
  • Check downspout extensions — they should direct water at least two feet from the foundation

Exterior sealing:

  • Any exterior caulk or flashing repairs should be done by mid-November before the rains start
  • Check window weep holes (the small slots at the bottom of window frames) — clear them if clogged with debris

Interior prep:

  • Check smoke and CO detectors — replace batteries annually, replace units over 10 years old
  • Test GFCI outlets in bathrooms, kitchen, garage, and exterior locations — press the test button, confirm the outlet loses power, press reset

Fix Pro San Diego handles all of these maintenance tasks — from caulk replacement to deck repair, door adjustments to pressure washing. If your annual checklist is turning into a backlog, call (858) 400-8901 for a maintenance assessment and a flat-rate quote.