Should You Buy a Home in Cardiff by the Sea Before a Potentially Record El Niño Winter?

by Zach Arrington

Yes, for most homes in Cardiff by the Sea, a strong El Niño winter is a reason to shop smarter, not a reason to wait. Redfin, using First Street data, rates Cardiff's flood risk as minor, with about 3% of properties at risk of severe flooding over the next 30 years. The storm risk here is concentrated along Coast Highway 101, the beach and the edges of San Elijo Lagoon, and the buyers who get hurt are usually the ones who skip the questions that only matter in winter.

I'm Zach Arrington, and I work the coastal corridor from Carmel Valley to Encinitas. I helped buyers purchase a single family home in Cardiff in 2025, and I track this market closely. Here is how I would think about buying or selling here between now and spring.

What the forecast actually says

On October 8, 2026, NOAA's Climate Prediction Center kept its El Niño Advisory in place and put the odds of a strong to very strong El Niño lasting through January to March 2027 at better than 83%. It also gave a 70% chance that the November to January period reaches a record level, stronger than any El Niño on file going back to 1950 (NOAA Climate Prediction Center).

Governor Newsom proclaimed a statewide state of emergency on September 21, 2026 to get ahead of it, and the proclamation specifically warns about large waves and coastal flooding when storms arrive during very high tides (Office of the Governor). Locally, Encinitas Fire Chief Josh Gordon has urged residents to check their homes, clear rain gutters and know the flood prone spots near them (ABC 10News).

One honest caveat: NOAA itself notes that a very strong El Niño does not guarantee a repeat of any specific past winter's local damage (Times of San Diego). Plan for it, but don't price a house as if the worst case is certain.

Cardiff has been here before

The history is useful because it shows exactly where Cardiff is vulnerable. During the 1997 to 1998 El Niño, the South Cardiff parking lot, walkways, railings and restrooms were destroyed or badly damaged, and Highway 101 was repeatedly closed by wave run up and cobbles thrown onto the road (Times of San Diego).

In December 2015, king tides pushing water into the San Elijo Lagoon inlet ate away the sandy slope under the east side of Highway 101. The largest gap was about eight feet deep and 30 feet long, and the city closed one northbound lane while crews made emergency repairs (ABC 10News).

Since then the city has added real protection. The Cardiff State Beach Living Shoreline project, finished in 2019, built about half a mile of restored dunes along the 2500 block of Coast Highway 101 with roughly $2.5 million in grant funding (Times of San Diego). In the January 2024 storms, the engineered revetment behind the dunes stayed completely intact, although the dunes themselves lost significant sand and needed repair (City of Encinitas).

What that means for a homeowner: the most likely El Niño headline in Cardiff is a closed or damaged stretch of Highway 101 and a battered beach, not widespread flooding of neighborhoods. That matters for your commute and your weekends, and it is a different risk from water in your living room.

The three questions I ask on every Cardiff home this winter

1. Where does the water go? For the large majority of Cardiff homes, the realistic risk is not the ocean. It is rain. A roof at the end of its life, gutters that empty against the foundation, a yard that slopes toward the house, or a retaining wall without working drains. These are ordinary inspection items that become urgent in a wet winter. A home inspection during or right after a storm is the best free test you will ever get, so I build inspection timing around the forecast whenever I can.

2. Is this address in a mapped flood zone? California sellers must disclose whether a property sits in a Special Flood Hazard Area as part of the Natural Hazard Disclosure (California Civil Code Section 1103.2). I also check the FEMA flood map for the specific parcel, because a home a block from the lagoon edge and a home up the hill can have very different answers even though both say Cardiff.

3. What has this house already lived through? Prior water intrusion, drainage work, roof repairs and insurance claims tell you more than a forecast does. I handle those questions with the listing agent myself and get the answers in writing, so my clients are not guessing or chasing the other side.

The flood insurance timing trap, especially for cash buyers

Standard homeowners policies generally do not cover flood damage, so flood protection usually means a separate policy, often through the National Flood Insurance Program (FEMA). Most new flood policies have a 30 day waiting period before coverage starts. The big exception is a policy bought in connection with making a mortgage loan, which has no waiting period (FEMA).

Here is the tradeoff most people miss. A financed buyer can close and be covered the same day. A cash buyer can face a 30 day gap right in the heart of storm season if they wait until closing to shop for a policy. If you are paying cash for a home anywhere near the lagoon or the 101 corridor, get the flood quote during escrow, not after. I connect clients with my preferred insurance broker early so this decision is made with real numbers before closing, not after the keys change hands.

Is winter a good time to buy in Cardiff?

Cardiff is not a soft market. Redfin reports a median sale price of $2,469,308 in September 2026, up 10.5% from a year earlier, with 32 homes sold that month compared with 28 a year before and a median of 29 days on market, up from 23 (Redfin).

So I would not expect El Niño to create bargains across the board. What it can create is a better buying process. In my experience, fewer buyers want to tour on rainy or stormy weekends, sellers who listed in fall may be more open to reasonable terms as the holidays approach, and you get to see how a house behaves in exactly the conditions that matter. My view as Zach Arrington: a buyer who is ready to act this winter, with inspection and insurance plans in place, is in a stronger spot than one waiting for spring and competing with everyone else.

If you are selling in Cardiff this winter

Do the boring work now. Clean gutters and downspouts, confirm that drains on retaining walls and hardscape actually move water away from the house, and fix any known roof issues before listing rather than letting a buyer discover them in a rainstorm. Gather receipts for drainage and roof work, because documentation turns a buyer's worry into a selling point. And disclose fully. A storm during escrow will reveal whatever was not mentioned, and that is the most expensive time to have the conversation.

The bottom line from me, Zach Arrington, Broker Associate with Real: this winter rewards buyers and sellers who prepare for water, not those who try to time the weather. If you are weighing a move in Cardiff by the Sea, call or text me at (619) 374-5339 or email zach@zarealtygroup.com.

FAQ

When is El Niño expected to be strongest in Cardiff by the Sea and San Diego?

NOAA's October 8, 2026 outlook expects a strong to very strong El Niño through January to March 2027, with a 70% chance that the November to January period reaches a record level. Local storm impacts depend on how individual storms line up with high tides, so timing varies from storm to storm.

Is Cardiff by the Sea in a flood zone?

Most of Cardiff is not considered high flood risk. Redfin, using First Street data, rates the area's flood risk as minor, with about 3% of properties at risk of severe flooding over 30 years. Risk is concentrated near the beach, Highway 101 and the San Elijo Lagoon edges, so check the FEMA flood map and the Natural Hazard Disclosure for any specific address.

Does homeowners insurance cover flood damage in Cardiff by the Sea?

Generally no. FEMA notes that standard homeowners policies typically do not cover flooding, so flood protection usually requires a separate policy, such as one through the National Flood Insurance Program.

How long does flood insurance take to start when buying a home in Cardiff?

Most new flood policies have a 30 day waiting period. If the policy is purchased in connection with making a mortgage loan, there is no waiting period, which is why cash buyers should shop for a flood quote during escrow.

Does Highway 101 in Cardiff close during big storms?

It has. During the 1997 to 1998 El Niño, Highway 101 in Cardiff was repeatedly closed by wave run up and cobbles, and in December 2015 erosion near the lagoon inlet led the city to close a northbound lane. The dunes and revetment completed in 2019 now protect that stretch, and the revetment held through the January 2024 storms.

Do sellers in Encinitas and Cardiff have to disclose flood risk?

Yes, and the rule is statewide, not specific to Cardiff. California's Natural Hazard Disclosure requires sellers to state whether a property is in a Special Flood Hazard Area, along with other mapped hazards. Sellers should also disclose any known water intrusion or past repairs.

Does the El Niño state of emergency apply to Solana Beach and Del Mar too?

Yes. The governor's September 21, 2026 proclamation covers all of California. Solana Beach and Del Mar have their own El Niño history: in 1997 to 1998, temporary riprap was placed along 15 Solana Beach properties, and Del Mar saw about $1.6 million in damage, including three homes damaged beyond repair.

Is winter a good time to buy a home in Cardiff by the Sea?

It can be. Prices have not softened, with Redfin reporting a September 2026 median sale price of $2,469,308, up 10.5% year over year. The advantage of buying in winter is seeing how a home handles rain before you own it, and often facing less competition on stormy weekends.