San Diego heat and high tides persist through next week

Temperatures across San Diego County will remain in the 80s through Friday, according to the National Weather Service. The heat wave that began this week shows no immediate signs of breaking, with daily highs reaching 80 degrees or higher from the coast to the inland foothills.

Forecasters warn that the coastline faces continued pressure from high tides and powerful waves until conditions improve on Wednesday. El Niño has amplified these tidal patterns, causing water levels to exceed 7 feet each morning through Tuesday. The weather service predicts tides will peak Monday at between 7.4 and 7.6 feet.

The sustained waves have already caused physical damage to local infrastructure. Over the weekend, surf chipped away at the berm that protects lifeguard headquarters in Del Mar. This erosion highlights the immediate impact of the rising water levels on coastal defenses.

Northwest waves are expected to reach their peak on Tuesday, ranging from 4 to 7 feet. These conditions will create dangerous rip currents for swimmers. Lifeguards express concern because sea surface temperatures have risen to about 75 degrees, which is 11 degrees above average. This warmth is drawing more people to local beaches despite the hazardous conditions.

Sunday afternoon readings illustrate the intensity of the heat across various neighborhoods. Allied Gardens recorded 90 degrees, while Spring Valley, Rancho San Diego, and Escondido all hit 89 degrees. Inland areas like Poway and Carlsbad reached 87 degrees, while coastal spots such as Del Mar and Imperial Beach stayed closer to 83 degrees. Even beachfront locations like Solana Beach and Cardiff registered 81 degrees.