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Upper Guadalupe Slough, CA Marine Weather Forecast

Tonight - 51°F
May 17, 2026
8 to 26 mph W
Mostly Clear
Mostly clear, with a low around 51. West wind 8 to 26 mph, with gusts as high as 32 mph.
Sunday - 64°F
May 17, 2026
7 to 29 mph WNW
Sunny
Sunny. High near 64, with temperatures falling to around 61 in the afternoon. West northwest wind 7 to 29 mph, with gusts as high as 39 mph.
Sunday Night - 57°F
May 17, 2026
21 to 32 mph NNW
Clear
Clear. Low around 57, with temperatures rising to around 60 overnight. North northwest wind 21 to 32 mph, with gusts as high as 40 mph.
Monday - 65°F
May 18, 2026
18 to 22 mph NW
Sunny
Sunny, with a high near 65. Northwest wind 18 to 22 mph, with gusts as high as 30 mph.
Monday Night - 54°F
May 18, 2026
1 to 22 mph WSW
Clear
Clear, with a low around 54. West southwest wind 1 to 22 mph, with gusts as high as 30 mph.
Tuesday - 68°F
May 19, 2026
1 to 17 mph WNW
Sunny
Sunny, with a high near 68.
Tuesday Night - 54°F
May 19, 2026
1 to 17 mph W
Mostly Clear
Mostly clear, with a low around 54.
Wednesday - 72°F
May 20, 2026
1 to 14 mph W
Sunny
Sunny, with a high near 72.
Wednesday Night - 54°F
May 20, 2026
2 to 14 mph W
Mostly Clear
Mostly clear, with a low around 54.
Thursday - 72°F
May 21, 2026
1 to 13 mph W
Sunny
Sunny, with a high near 72.
Thursday Night - 54°F
May 21, 2026
2 to 13 mph W
Mostly Clear
Mostly clear, with a low around 54.
Friday - 69°F
May 22, 2026
2 to 13 mph W
Sunny
Sunny, with a high near 69.
Friday Night - 53°F
May 22, 2026
2 to 13 mph WSW
Mostly Clear
Mostly clear, with a low around 53.
Saturday - 67°F
May 23, 2026
2 to 14 mph W
Sunny
Sunny, with a high near 67.

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