San Mateo Point CA to the Mexican Border and out 30 NM Marine Forecast
| Tonight...Wind Nw 10 Kt. Seas 3 To 4 Ft. Wave Detail: Nw 2 Ft At 4 Seconds, W 3 Ft At 12 Seconds And S 1 Foot At 14 Seconds. |
| Thu...Wind W 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 2 Ft At 4 Seconds, W 3 Ft At 7 Seconds And S 1 Foot At 16 Seconds. |
| Thu Night...Wind W 10 Kt In The Evening...Becoming Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 7 Seconds And S 1 Foot At 17 Seconds. |
| Fri...Wind Variable Less Than 10 Kt...Becoming W 10 Kt In The Afternoon. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 1 Foot At 15 Seconds. |
| Fri Night...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 2 Ft At 16 Seconds. |
| Sat...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 3 Ft At 13 Seconds And S 2 Ft At 15 Seconds. |
| Sat Night...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 1 Foot At 4 Seconds, W 3 Ft At 12 Seconds And S 2 Ft At 15 Seconds. |
| Sun...Wind Variable Less Than 10 Kt. Seas 3 To 4 Ft. Wave Detail: W 3 Ft At 12 Seconds And S 2 Ft At 14 Seconds. |
| Sun Night...Wind Variable Less Than 10 Kt. Seas 3 Ft. Wave Detail: W 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 Ft. Wave Detail: W 1 Foot At 4 Seconds, S 2 Ft At 14 Seconds And W 2 Ft At 15 Seconds. |
| Mon Night...Wind Variable Less Than 10 Kt. Seas 3 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 214am PST Sunday Jan 18 2026 Synopsis Weak Santa Ana winds and high temperatures as much as 10 to 15 degrees above average for the valleys today and Monday. A slow cooling trend is expected for Tuesday through the end of the week. The marine layer could return to the immediate coast for a few hours tonight into Monday morning but is not likely to stick around for Monday night into Tuesday morning as offshore flow makes a brief return. A low pressure system will bring more noticeable cooling, increased clouds and small chances for precipitation as we approach next weekend. For Extreme Southwestern California Including Orange... San Diego...Western Riverside and Southwestern San Bernardino Counties This morning...widespread mid and high clouds move east over SoCal across an upper level high centered over central Baja. These are driven by an upper low centered about 450 miles southwest of San Diego and moving north in the mean southerly flow aloft. At the sfc, pressure gradients remain offshore and the windy areas have reported north to northeast winds gusting 30-40 mph. There remains no sign of marine layer low clouds/fog within 60 miles of the SoCal coast. The trend through Monday morning is toward weaker offshore flow and this could allow low clouds and fog from a shallow marine layer to return to the immediate coast. The offshore flow strengthens again Monday night into Tuesday morning, pushing the dry air from inland toward the coast and most likely keeping the low clouds/fog offshore. Meanwhile, the high pressure aloft will keep inland high temperatures 10 to 15 degrees above average through Monday. Temperatures across SoCal decline gradually from Tuesday through Thursday as the upper ridge weakens in response to a shortwave trough moving southeast from the Pac Northwest and an upper low from the southwest being drawn northeast toward SoCal. As we head toward next weekend, the pattern becomes less well-defined as model solutions diverge. The forecast details are much more uncertain after Thursday but we can say with reasonable confidence that our weather will no longer be dominated by high pressure but will instead become dominated by low pressure. Clouds and moisture will increase and temperatures will lower more noticeably for Friday through next weekend. Inland high temperatures for next Saturday are unlikely to exceed 70 degrees. There is also the chance for some precipitation Friday-Saturday but probabilities remain low as only a minority of ensemble members across model platforms indicate a wet solution. The National Blend of Models indicate a less than 25% chance for measurable precipitation in any 24 hour period from Friday through Sunday. Marine Patchy dense fog possible (20-30% chance) Sunday night into Monday and again Monday night into Tuesday. Patchy fog can result in visibility dropping locally below 1 nautical mile. Otherwise, no hazardous marine conditions are expected through Thursday. 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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