The highest waves will hit the northern half of San Diego County's coast and Orange County's southern coastline. Strong rip and longshore currents are likely during this time, according to NWS.
Surf heights may reach 2 to 4 feet, with 5-foot sets in San Diego County's central and southern beaches.
Tropical Storm Hilary was downgraded from hurricane conditions going into Saturday, but experts say the storm will still bring rough surf to Southern California. One NWS weather model shows the Hilary and Irwin merging as they continue west toward Hawaii.
However, the conditions are being welcomed by some locals planning to hit area beaches.
The Supergirl Pro Surf Festival hits Oceanside's coast Saturday, where surfers will be looking for high waves during competition. The Vans U.S. Open of Surfing also hits Huntington Beach Saturday through Aug. 6.
When rip current risks are present, it's recommended that beach-goers:
Swim near a lifeguard as well, especially for inexperienced swimmers,
Check the beach forecast or speak with a lifeguard about conditions before heading out, and
Watch for warning signage.
If you're caught in a rip current, experts say it's important to stay calm. Float, wave your arms and yell to get the attention of a lifeguard or people on shore.