Here is this week’s weather forecast by PG&E meteorologist John Lindsey.
The gale force northwesterly winds that have dogged the San Luis Obispo County coastline for weeks have finally diminished as a weak trough of low pressure moves toward the Central Coast. These relentless winds produced clear and sunny conditions along the beaches. However, today and tomorrow’s gentle to moderate (8- to 18-mph) southwesterly winds will allow a deep marine layer with fog and drizzle to persist along our coastline for most of this day. Ironically, the northwesterly facing beaches of (Morro Bay, Los Osos and Montaña De Oro State Park) may escape the June gloom as the southerly winds blow down the Irish Hills and produce clearing at those locations.
Today’s temperatures will only reach the middle 70s in the North County and high 60s in the coastal valleys. Temperatures at the beaches will range from the low to mid-60s.
The marine clouds will continue to expand leading to a bit more cooling for Tuesday, which should be the coolest day this week, with not a lot of change expected Wednesday. Overall, expect a typical summer type pattern of low clouds and fog along the coast to sunny skies inland.
Changes start to occur on Thursday as a strong high pressure ridge is expected to build over California. Temperatures should go up across the North County with only a modest rise just away from the coast with further warming expected in all locations Friday as the ridge continues to strengthen over the Central Coast.
This morning’s 5- to 7-foot northwesterly (295-degree deep-water) swell (with an 8- to 11-second period) will decrease to 4 to 6 feet (with a 9- to 11-second period) Tuesday. This swell will further decrease to 3 to 5 feet (with an 8- to 10-second period) Wednesday and will remain at this height and period through Thursday. A 5- to 7-foot northwesterly (300-degree deep-water) swell (with an 8- to 11-second period) will arrive along our coastline on Friday and will remain at this height and period through Sunday.
Arriving from the Southern Hemisphere:
An intense storm developed about 1,100 miles to the west of New Zealand last week. A very long-period Southern Hemisphere swell from this storm will arrive at the SE Hawaiian buoy later today.
This Southern Hemisphere (200-degree deep-water) swell will arrive along the Central Coast on Wednesday at 1 to 2 feet (with a 25-second period), building to 3 to 5 feet (with an 18- to 21-second period) Thursday through Saturday. Individual wave sets could reach over 8 feet. In Southern California, the Wedge in Newport Beach could see wave heights reach over 14 feet.
Seawater temperatures will range between 51 and 54 degrees through Tuesday, Increasing to 53 and 55 degrees Wednesday through Sunday.