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    Oceanside, California Marine & Surf Report &mdash; Sunday, August 16, 2026 at 8:21 PM PDT
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    Current surf size across the Oceanside coastline is running around 2 to 3 feet with occasional sets up to 4 feet on favorability at top beach breaks. According to the latest 9-band spectral wave energy breakdown from CDIP Station 045 (La Jolla Nearshore), primary wave energy is dominated by a long-period southerly groundswell running around 15 seconds alongside a secondary short-period westerly wind swell at 8 seconds. Surf quality is generally fair to clean, with smooth surface conditions supported by light evening winds, though fading swell energy and moderate mid-period crossover energy create slightly softer shoulder dynamics at beach breaks.
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    Data from regional offshore wave buoys confirms a mixed ocean state surrounding the North County coastline. Near the Oceanside offshore zone and adjacent Scripps/La Jolla CDIP sensors, primary swell is registering from the south-southwest at 2 to 3 feet with a 15-second dominant period, while secondary energy continues out of the west-northwest at 2 feet with an 8-second period. Further offshore buoy readouts indicate outer ocean seas around 3 to 4 feet under variable light offshore breeze patterns.
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    Local weather conditions for the Oceanside coastline feature partly cloudy skies with current ambient temperatures in the upper 60s to low 70s. For the remainder of the evening, winds will stay light and variable under 5 knots, giving way to mostly cloudy skies overnight as a light marine layer forms over coastal areas. High temperatures for the day peaked near 74&#176;F, with overnight low temperatures expected to drop near 64&#176;F.
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    Tide observations for the Oceanside Harbor station record a high tide of 6.0 feet late this afternoon, followed by a falling tide down to a low tide of roughly 1.4 feet later tonight. The tide will begin pushing back up past midnight toward a morning high tide of approximately 4.2 feet near dawn.
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    Looking ahead to tomorrow, Monday brings partly sunny skies following the morning clearing of the coastal fog layer with high temperatures again topping out near 73&#176;F to 75&#176;F. Marine conditions will see light westerly winds picking up to 5 to 10 knots in the afternoon, accompanied by a continuation of the mixed south swell at 2 to 3 feet at 14 seconds and west swell at 2 feet, maintaining waist-high surf across exposed beach breaks.
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  <p style="margin: 16px 0 0 0; font-size: 0.85em; color: #666666; font-style: italic;">
    raw data from noaa, curated by surforecast pacificwaverider
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