Key facts: San Diego
- San Diego rarely floods, which is why January 22, 2024 hit so hard: a burst of winter rain sent water through Southcrest and other low neighborhoods near Chollas Creek.[1]
- Few homes here have sump pumps or flood coverage.
- If you are near a creek or canyon bottom, check your flood risk.
Rare storms, unprepared homes
Few homes here have sump pumps or flood coverage. If you are near a creek or canyon bottom, check your flood risk.
Everyday leaks
Older copper slab lines and aging water heaters cause most calls. Look for warm spots, and check garage water heaters for corrosion.
Flood claims recorded in San Diego County
San Diego sits in San Diego County. FEMA publishes every National Flood Insurance Program claim with personal details removed, which gives a plain record of where water has reached insured buildings here.
| Measure | Count |
|---|---|
| Flood insurance claims on record | 2,442 |
| Year with the most claims | 1980 (257) |
| Largest named event | Flooding (629) |
| Claims outside high-risk A and V zones | 57% |
| Claims on buildings built before 1975 | 60% |
County-wide counts of insured claims only. Uninsured losses, burst pipes and appliance leaks are not in this data.
What the San Diego claim record shows
For San Diego homes, the local precedents are the events behind the most San Diego County claims: Flooding (629 claims), Pineapple Express - Southern (196 claims) and San Diego Flooding (178 claims).
About 57% of claims with a recorded zone came from outside the high-risk A and V zones, so a moderate-risk label does not mean a San Diego home stays dry.
If your San Diego home is older, note that buildings from before 1975 make up 60% of county claims with a known build date. Many predate current flood maps, so inspect low outlets, ductwork and subfloors closely after any water event.
Federal disaster history for San Diego County
FEMA lists 51 federal declarations covering San Diego County. The most common types are fire (28), flood (12) and severe storm (5). The latest are Severe Storm and Flooding in 2024, Severe Winter Storms, Flooding, Landslides, and Mudslides in 2023 and Severe Winter Storms, Flooding, and Mudslides in 2017. When a declaration is open, federal aid may be available to San Diego residents, so ask about it alongside your insurance claim.
San Diego weather and your home
Weather records for San Diego from 2015 through 2024 average 13 inches of precipitation a year, and January and March are the wettest months. The area averages 3.0 days a year with an inch or more.
Freezing nights almost never happen in San Diego, so the bigger concerns are storms, plumbing failures and humidity.
When rain falls in San Diego
Seasonal averages for San Diego, 2015 through 2024. Plan roof, gutter and sump pump checks before the wettest stretch.
| Season | Average | Share of year |
|---|---|---|
| January to March | 7.2 in | 54% |
| April to June | 1.5 in | 12% |
| July to September | 0.9 in | 7% |
| October to December | 3.6 in | 27% |
Modeled from Open-Meteo historical weather data. Precipitation includes rain and melted snow.
San Diego home checklist from these records
- Don't rely on recent quiet years. Only 28% of San Diego County claims date from 2015 or later, so older floods still show what can happen.
- Check roof flashing and drains before January, the wettest month in San Diego.
- Keep dated photos of each room. After Flooding, 629 insured San Diego County owners filed claims at about the same time.
What to tell the San Diego contractor
- Your distance to a creek or canyon
- Whether the water is rising or dripping
- Whether the slab is wet
Services San Diego callers ask about
Questions
San Diego water damage questions
Is flood insurance worth it in San Diego?
Ask your agent, especially near creeks. Standard policies generally exclude flood.
Do you cover Chula Vista?
Yes, along with Carlsbad, Oceanside and Escondido.