San Mateo Point to the Mexican Border from 30 to 60 nm out including San Clemente Island Marine Forecast
| Tonight...Wind Nw 10 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 2 Ft At 4 Seconds, W 4 Ft At 12 Seconds And S 1 Foot At 14 Seconds. |
| Thu...Wind Nw 10 To 15 Kt With Gusts To 20 Kt. Seas 4 To 6 Ft. Wave Detail: Nw 3 Ft At 4 Seconds, Nw 4 Ft At 7 Seconds And S 1 Foot At 16 Seconds. |
| Thu Night...Wind W 10 To 15 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 2 Ft At 4 Seconds, Nw 4 Ft At 7 Seconds And S 1 Foot At 17 Seconds. |
| Fri...Wind Variable Less Than 10 Kt...Becoming Nw 10 Kt In The Afternoon. Seas 4 To 6 Ft. Wave Detail: Nw 1 Foot At 4 Seconds, W 4 Ft At 12 Seconds And S 1 Foot At 15 Seconds. |
| Fri Night...Wind W 10 Kt. Seas 4 To 6 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 4 Ft At 12 Seconds And S 1 Foot At 16 Seconds. |
| Sat...Wind Variable Less Than 10 Kt. Seas 4 To 6 Ft. Wave Detail: W 4 Ft At 13 Seconds And S 2 Ft At 15 Seconds. |
| Sat Night...Wind Variable Less Than 10 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 1 Foot At 4 Seconds, W 4 Ft At 12 Seconds And S 2 Ft At 15 Seconds. |
| Sun...Wind Variable Less Than 10 Kt. Seas 3 To 5 Ft. Wave Detail: W 4 Ft At 12 Seconds And S 2 Ft At 14 Seconds. |
| Sun Night...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: Nw 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 2 Ft At 14 Seconds. |
| Mon...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, S 2 Ft At 14 Seconds And W 3 Ft At 15 Seconds. |
| Mon Night...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 2 Ft At 14 Seconds And S 2 Ft At 14 Seconds. |
| Area Forecast Discussion National Weather Service San Diego CA 902am PST Wednesday Nov 5 2025 Synopsis Cooler conditions expected today with periods of gusty winds over the mountains and into the deserts this afternoon and evening. Conditions will warm into the weekend, with temperatures peaking on Sunday. A pattern change is expected sometime mid to late next week. While there remains uncertainty in the details cooler, breezier, and wetter conditions are possible. For Extreme Southwestern California Including Orange... San Diego...Western Riverside and Southwestern San Bernardino Counties A passing weak shortwave has increased onshore flow this morning. This has helped deepen the marine layer with patchy low cloud coverage from the coast to the coastal mountain slopes overnight and this morning. Any lingering low clouds should clear quickly this morning, leaving mostly clear skies across the area. The increased pressure gradient will also result in an increase in southwest winds for the mountains and deserts this afternoon and evening. Wind gusts of 25 to 45 mph are expected. Strongest winds are expected on the desert slopes of the San Bernardino mountains into the High Desert and through the San Gorgonio Pass. High temperatures today will be a few degrees cooler than yesterday, most notably in the inland valleys. Highs on Thursday will be a few degrees warmer west of the mountains, with similar temperatures to a few degrees of cooling in the deserts. An area of high pressure aloft will strengthen over the weekend, bringing a period of warming. On Friday, highs west of the mountains will be 5 to 10 degrees warmer than Thursday. The warming will continue into Sunday, which is when the heat is expected to peak at 8 to 12 degrees above average for the inland valleys. A few degrees of cooling is expected Monday, with continued cooling into the middle of the week. Additionally, the marine layer is expected to be shallower for Thursday through the weekend. Patchy low clouds may make into portions of the valleys through Friday, with low clouds staying mostly confined to coastal areas over the weekend. An area of low pressure will develop off the US West Coast early next week and slowly move east. Faster solutions in the ensemble cluster analysis indicate that precipitation could occur as early as Wednesday next week, with slower solutions pushing any precipitation to Thursday or Friday. It's also worth noting that the slower solutions are also indicating higher amounts of rainfall are possible. Calibrated NBM daily chances for measurable rainfall are less than 10 percent on Tuesday, increase to around 20 percent for Wednesday, and 40 percent for Thursday and Friday with the chance for one inch or more of rainfall at Big Bear for Thursday through Friday around 20 percent. Uncalibrated ECMWF (European Centre for Medium-Range Weather Forecasts) ensemble output has highest probabilities for one inch or more of rainfall for the mountains in San Bernardino County of 50 to 60 percent from midday Thursday to midday Friday. While our confidence in precipitation occurring is increasing for the middle to end of next week, there is still a considerable amount of uncertainty in the timing and amount expected. The strength and depth of the incoming trough will also have an impact in our temperature and wind forecast, with a stronger and deeper trough bringing cooler and windier conditions. Marine No hazardous marine conditions are expected through Sunday. Beaches Surf will increase Thursday, peak Thursday night, and gradually diminish Friday. Surf of 3-6 feet is expected, locally higher on west-facing beaches, producing a high rip current risk. In addition, very high tides will combine with the elevated surf to increase the risk of minor tidal overflow late Thursday and Friday. Skywarn Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. NOAA San Diego CA Office: Watches - Warnings - Advisories CA...None. PZ...None. |
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