Marine Weather Net

Santa Cruz Island to San Clemente Island CA between 60 and 150 NM Offshore Forecast


TODAY

WNW
WINDS
5 - 15
KNOTS

TONIGHT

NW
WINDS
5 - 15
KNOTS

THU

NW
WINDS
15 - 25
KNOTS

THU NIGHT

NW
WINDS
15 - 25
KNOTS

The Marine Weather Forecast In Detail:
PZZ840 Forecast Issued: 829 AM PDT Wed Oct 22 2025

Today...W To Nw Winds 5 To 15 Kt. Seas 7 To 11 Ft. Scattered Showers.
Tonight...Nw Winds 5 To 15 Kt, Increasing To 15 To 25 Kt. Seas 6 To 11 Ft.
Thu...Nw Winds 15 To 25 Kt. Seas 5 To 9 Ft.
Thu Night...Nw Winds 15 To 25 Kt. Seas 5 To 9 Ft.
Fri...Nw Winds 10 To 20 Kt. Seas 7 To 12 Ft.
Fri Night...Nw Winds 10 To 20 Kt. Seas 7 To 12 Ft.
Sat...Nw Winds 15 To 25 Kt. Seas 6 To 11 Ft.
Sat Night...Nw Winds 15 To 25 Kt. Seas 6 To 11 Ft.
Sun...Nw Winds 20 To 30 Kt. Seas 8 To 14 Ft.
Sun Night...Nw Winds 20 To 30 Kt. Seas 8 To 14 Ft.
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Area Forecast Discussion
National Weather Service San Diego CA
139pm PDT Wednesday Oct 22 2025

Synopsis
Cooler weather today despite a patchy marine layer this morning, with gusty winds on the eastern slopes of the mountains this afternoon and evening. A deeper marine layer tongiht will back up to the coastal slopes of the mountains with areas of low visibility for Thursday morning. A warming and drying trend Thursday and Friday with highs returning to near normal before cooler and windier weather returns for the weekend. Warmer temperatures normal to above normal for Monday-Wednesday.

For Extreme Southwestern California Including Orange... San Diego...Western Riverside and Southwestern San Bernardino Counties
Water vapor satellite imagery shows a large upper level low positioned along the CA/NV border, ushering in showers and storms for much of the Sierra Nevada. This system failed to make it far enough south for ample moisture to reach Southern California, although a few light showers/storms were observed in the mountains and Coachella Valley early this morning. As the low moves eastward today, both the mountain passes and lower deserts will gust up to 50- 55 mph out of the west, with these winds lingering through tonight. As the low exits, a deeper marine layer develops tonight and pushes up against the coastal slopes of the mountains into Thursday morning. Previous hi-res model runs were developing marine layer drizzle for Thursday morning across the valleys and inland areas, but the deepness looks to be insufficient for drizzle to develop. Still, a more widespread marine layer for inland areas Thursday morning will limit warming a bit and highs tomorrow should be 3-5 degrees below normal.

With the departure of the aforementioned low and the track of a larger low over the PacNW, the end of the week will feature riding over SoCal and a quick warm up for Friday. Highs will warm 5-9 degrees above Thursday, with temperatures in the 70s for the coast, 80s for valleys and Inland Empire, mid 90s for the deserts and Coachella Valley, 60s to 70s in the mountains, and 80s in the High Desert. By Saturday, the larger low over the PacNW will shift a bit southward, shunting the ridge and thermal axis eastward and more zonal flow aloft settles in. The marine layer will deepen once more, and temperatures will cool a few degrees - near normal for Saturday and 2-5 degrees below normal for Sunday. The gradient tightens significantly on Sunday, and another windy day will ensue. Strong west winds will develop by peak heating on Sunday, prevailing into very early Monday as the low progresses east. Deserts, mountains, and passes may all see gusts exceeding 30 mph at times, especially for the northern forecast areas. At this point, this next system looks to be dry and any associated showers/storms will remain too far north for us to benefit from.

For early next week, more zonal flow to weak riding will settle in for the western states. The next system occurring by mid week will be an open trough off the coast of Washington transitioning to a closed low while a separate low over the Great Lakes works in conjunction to squeeze the ridge, increasing heigheights significantly over California. While slow warming will be observed Monday over Sunday, more substantial warming will occur for Tuesday and Wednesday as highs return 4-10 degrees above normal.

Marine
Northwest wind gusts around 20 knots in the immediate vicinity of San Clemente Island today, and likely again Sunday. Otherwise, no hazardous marine conditions are expected through Monday.

NOAA San Diego CA Office: Watches - Warnings - Advisories
CA...Wind Advisory until midnight PDT tonight for San Diego County Deserts-San Gorgonio Pass near Banning.

PZ...None.