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, resulting in fair and warm conditions.
Monday’s maximum temperatures are expected to hit 97 degrees in Paso Robles, while San Luis Obispo will reach 87. High temperatures along the beaches will range from the low to high 70s.
A moderately strong high-pressure ridge is expected to build over California this week. The afternoon northwesterly winds will only reach gentle to moderate (13- to 24-mph) levels, which will keep cooling mostly confined to the coastal regions. Consequently, the North County is expected to reach triple digits Wednesday through Saturday.
The coastal valleys will mostly be in the mid-80s, while the beaches will stay in the 70s, with areas of marine low clouds during the evening and early morning hours. However, overnight minimums will remain crisp and in the 50s through Wednesday, before warmer overnight minimums are forecast for the end of the week when subtropical moisture is expected to move into the Central Coast. Currently, only clouds are expected from the subtropical flow, but there is a slight chance for light showers or isolated thunderstorms late Friday and/or Saturday.
A trough of low pressure will lead to cooler weather, with temperatures decreasing back to normal September levels early next week; but there is a chance that warmer weather could return by the middle part of next week as Santa Lucia winds return.
Monday’s 4- to 6-foot northwesterly (310-degree, deep-water) sea and swell (with a 7- to 9-second period) will decrease to 3 to 5 feet Tuesday and will remain at this level through Wednesday.
A 3- to 5-foot north-westerly swell (with an 8- to 17-second period) will arrive at our coastline Thursday and will stay at this height but with a gradually shorter period through Saturday.
Arriving from the Southern Hemisphere
Monday’s 2- to 4-foot Southern Hemisphere (200-degree, deep-water) swell (with a 16- to
18-second period) will remain at this height and period through Friday.
Seawater temperatures are expected to range between 58 and 62 degrees through Saturday.
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At PG&E, your safety is our first concern. This week’s long-period Southern Hemisphere swell could produce strong rip currents along many of our beaches. Never turn your back to the ocean, as sneaker waves can inundate beaches and pull people into the water. If your caught in a rip current, swim out of the current in a direction following the shoreline. When out of the current, swim at an angle — away from the current — toward shore.