Weather Watch

San Luis Obispo County weather forecast for the week of April 13

Here is this week’s weather forecast by PG&E meteorologist John Lindsey.

This morning’s marine low clouds and areas of fog and drizzle will clear this afternoon but will redevelop tonight along the coastal regions of San Luis Obispo and Santa Barbara counties.

Maximum temperatures along the beaches will range between the high 50s and low 60s, while temperatures in the coastal valleys will reach the high 60s. The inland valleys will hit the mid-70s.

A dry cold front will swing through the Central Coast on Tuesday morning, which will clear the marine low clouds and produce mild temperatures. Post frontal northwesterly winds will increase to moderate gale-force to fresh gale-force (32- to 46-mph) levels along the coastline Tuesday afternoon, decreasing Tuesday night.

A ridge of high pressure will build across California on Wednesday, producing gusty Santa Lucia (northeasterly) winds Wednesday, Thursday and Friday morning. During that time frame, the winds will shift out of the northwest (onshore) during the afternoon hours, keeping the temperatures from warming up too much.

However, these winds will give clear skies and above-normal seasonal temperatures with the inland and coastal valleys reaching the 80s and temperatures in the 70s expected along the beaches.

The marine layer is expected to return Friday night into Saturday. At this time, most of the numerical weather models are suggesting unsettled weather with the possibility of rain showers next week. 

Surf report

Today’s 7-to 9-foot northwesterly (300-degree, deep-water) sea and swell (with a 5- to 13-second period) will remain through Tuesday morning, increasing to 9 to 11 feet (with a 5- to 11-second period) Tuesday afternoon.

This northwesterly (300-degree, deep-water) sea and swell will decrease to 8 to 10 feet (with a 7- to 11-second period) Wednesday, further lowering to 6 to 8 feet Thursday morning.

A long-period northwesterly (305-degree, deep-water) swell from the Gulf of Alaska will arrive along our coastline Thursday afternoon at 5 to 7 feet (with a 19- to 21-second period), building to 8 to 10 feet (with a 16- to 18-second period) Friday into Saturday. 

Note: A massive storm will develop off the coast of southern Australia and move into the Tasman Sea later this week. However, swell from that storm is not expected to reach the California coastline.

Seawater temperatures

Seawater temperatures will range between 49 and 52 degrees through Saturday. 

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At PG&E, your safety is our first concern. If you’re driving in this morning’s fog and drizzle, reduce your speed and turn on your low-beam headlights and your fog lights if you have them. Check the condition of your windshield wipers and replace them if they’re not in good shape.