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. |
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Area Forecast Discussion National Weather Service San Diego CA 823am PDT Sunday July 20 2025 Synopsis Chances for mountain showers decrease for today. Temperatures will remain mostly below average through this week. Marine layer low clouds and fog will spread into portions of the inland valleys each night and morning. For Extreme Southwestern California Including Orange... San Diego...Western Riverside and Southwestern San Bernardino Counties .Morning Marine layer clouds will retreat to the coast by later this morning with minimal clearing at the beaches into the afternoon. Clouds will move back inland fairly quickly by the evening, spreading into all areas west of the mountains overnight into Monday morning. This morning's sounding in San Diego reveals a drier atmosphere as PWAT (Precipitable Water) values are now below one inch. This, along with a stronger mid level inversion, will only garner minimal thunderstorm chances over the mountain crests this afternoon. Hi-res models also show barely anything noticeable, so a weak shower may occur if you're lucky. Otherwise, the forecast remains on track to see dry and cooler than normal weather through the week. .Previous Discussion (225am Sunday)... The upper low over SoCal will gradually evolve into an open wave through Monday as a low/trough over the Pacific Northwest deepens. The sub-tropical high is displaced to the southeast over the Gulf States. Extensive low pressure troughing will dominate the pattern this week, continuing the drying trend as monsoonal moisture is displaced to the east with the sub-tropical high. This will continue to keep daytime high temperatures near or below seasonal averages for all areas, including the lower deserts. It will also maintain a persistent marine layer which will continue to bring low clouds and patchy fog into the coastal areas and valleys each night and morning. Model solutions remain in good agreement through mid-week so forecast confidence is high for that period. Solutions diverge somewhat as we approach next weekend so confidence in forecast details is a little lower. Marine No hazardous marine weather is 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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