Here is this week’s weather forecast by PG&E meteorologist John Lindsey.
Monday morning’s gentle to moderate (8- to 18-mph) Santa Lucia (northeasterly) winds are expected to limit the development of marine low clouds. Strong to gale-force (25- to 38-mph) northwesterly winds along the coastline will keep the skies clear Monday afternoon.
Monday’s temperatures are expected to hit 90 degrees in Paso Robles and 81 degrees in San Luis Obispo.
High temperatures along the beaches will range from the high 60s along the northwesterly facing beaches of Morro Bay, Los Osos, Montaña de Oro and Nipomo, and the low 70s along the westerly facing beaches of Cambria, Grover Beach and Pismo Beach. Southwesterly facing beaches Cayucos and Avila Beach will be in the low 80s.
A broad upper-level trough of low pressure is expected to develop and reside off the West Coast through the week.
This low-pressure system will give decreasing winds, a persistent marine layer and lower temperatures Tuesday into Wednesday.
The coastal low clouds will become progressively deeper and more extensive each day which could result in some pockets of mist/drizzle along the coast.
Another round of strong to gale-force afternoon northwesterly winds along the coastline will produce mostly clear conditions in the coastal regions during the late morning and afternoon hours and will keep temperatures mild. Otherwise, slightly higher, but still below-normal temperatures are forecast through the Labor Day holiday weekend.
This week's surf report
Strong to gale-force northwesterly winds will generate a 5- to 7-foot northwesterly (310-degree, deep-water) sea and swell Monday (with a 5- to 16-second period) Monday into Tuesday, decreasing to 4 to 6 feet (with a 7- to 12-second period) Wednesday into Thursday. This northwesterly sea and swell will increase to 5 to 7 feet (with a 5- to 9-second
period) Thursday afternoon into Friday, decreasing Saturday.
Abnormally warm waters surrounding the Hawaiian Islands have added in the development of three hurricanes. Two of these tropical cyclones, Ignacio and Jimena, will generate a 3- to 4-foot south-southwesterly (195-degree, deep-water) swell (with a 12- to 14-second period) along our coastline starting Tuesday and continuing through Saturday.
As the week progresses, the swell trains will gradually shift out of the southwest.
Arriving from the Southern Hemisphere: A 2- to 3-foot Southern Hemisphere (220-degree, deep-water) swell (with an 18- to 20-second period) will arrive Friday into Saturday.
Temperatures will range between 57 and 60 degrees through Saturday.
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