, Issued at 1123 AM PDT Sun Jun 21 2026 (This afternoon through Monday night)
The first day of astronomical summer will be a textbook one for the Bay Area and Central Coast. A deep marine layer that penetrated inland last night will slowly retreat towards the coast through the morning. Stratus will linger at the coast through the day, keeping temperatures below normal. Elsewhere, expect near normal temperatures with minor HeatRisk. Heights will begin to rise today as upper-level shortwave ridging drifts in from the Eastern Pacific Ocean. This will kickoff a warming and drying trend, compressing the marine layer in the process. As such, expect warmer conditions with minor HeatRisk and less stratus extent tomorrow.
..issued at 1123 AM PDT Sun Jun 21 2026 (Tuesday through next Saturday)
High pressure across the Desert Southwest/Northern Mexico will strengthen and build northwestward Tuesday, continuing the warming and drying trend. Areas of moderate HeatRisk are expected Tuesday through Thursday across the Santa Clara Valley and East Bay Interior Valleys, with the greatest extent coinciding with the warmest day of the week on Wednesday. The marine layer will start out around 1,500 feet on Tuesday and compress to near 1,000 feet by Thursday. As such, less and less stratus extent is expected each subsequent night. This will keep temperatures at the coast below normal and temperatures inland slightly above normal. No records are in jeopardy.
Global ensemble clusters are in agreement that upper-level troughing will be along the West Coast by Friday, deepening the marine layer as a result. Temperatures will cool to near normal for the interior and remain below normal at the coast. By Saturday, widespread below normal temperatures are expected. A passing cold front will increase onshore winds Friday and into the weekend. Across the land, wind gusts of 30-40 mph are expected across ridgelines and through gaps and passes. Over the waters, widespread hazardous conditions for small craft are expected. There is also a surge in PWAT to near one inch so drizzle will be possible, especially along the coast.
(06z TAFS) Issued at 921 PM PDT Sun Jun 21 2026
It's VFR except for stratus /MVFR-IFR/ along the coastline and locally inland. Onshore winds will continue to usher stratus /MVFR-IFR/ inland tonight and Monday morning. Stratus mixes out to the coastline with conditions improving to MVFR-VFR by late Monday morning and afternoon. Coastal stratus redevelops Monday night and Tuesday morning.
Vicinity of SFO, Stratus /MVFR-IFR/ is forecast to return to the terminal this evening. Stratus /MVFR-IFR/ prevails tonight and Monday morning with mix out to VFR 19z Monday. Stratus /MVFR/ returns mid Monday evening. West wind near 10 knots tonight, increasing to 12 to 20 knots beginning 19z Monday afternoon, then easing to near 10 knots mid Monday evening.
SFO Bridge Approach, Similar to SFO.
Vicinity of SJC and OAK, For SJC Airport VFR for the evening, then stratus /MVFR-IFR/ overnight then mixes out to VFR 19z Monday. Northwest wind 10 knots tonight to Monday. For OAK Airport stratus /MVFR-IFR/ prevails tonight and Monday morning, mixing out to VFR 19z. West wind 5 to 15 knots.
Monterey Bay Terminals, Stratus /IFR/ prevails tonight and Monday morning. Conditions improving to MVFR-VFR late Monday morning and afternoon. Stratus /IFR/ returns Monday evening and night. Onshore winds 5 to 15 knots.
(tonight through next Saturday) Issued at 839 PM PDT Sun Jun 21 2026
Tonight through early Monday morning north to northwest fresh to strong winds continue over the northern outer waters, resulting in hazardous conditions for small craft. For other inner and outer water, north to northwest winds will be light to moderate. Long period southwest swell will persist through the extended forecast.
Issued at 308 AM PDT Sat Jun 20 2026
Long period southerly swell at around 15 to 17 seconds will persist for the remainder of the weekend, and increase to 17 to 19 seconds by the middle of the upcoming work week as energetic storms in the Southern Hemisphere continue to affect the California coast, especially for south and southwest facing beaches. Hazardous beach conditions are advertised, specifically for moderate to steeply sloped beaches along the Pacific Coast of the North Bay, San Mateo, Santa Cruz counties. A Beach Hazards Statement for Pacific Coast beaches continues through Wednesday afternoon. Be sure to check beach conditions before you head out. Sneaker waves will run up the beach much farther than other waves, potentially catching beachgoers by surprise and resulting in people being swept into the water. Rip currents are strong enough to pull the strongest swimmers away from shore. Swim near a lifeguard if possible. Stay back from the beach, and away from jetties, piers, beachside rocks, and other infrastructure near the water. Never turn your back to the ocean!
Ca, Beach Hazards Statement through Wednesday afternoon for CAZ006- 505-509-529-530.
PZ, Small Craft Advisory until 3 AM PDT Monday for Pt Arena to Pt Reyes 10-60 NM.
