San Mateo Surf Forecast and Surf Report

Alright, Rusty here. Let’s break down what’s coming your way.

Water temp at San Mateo is running 81°, which is a full 8° above the norm for this time of year – that’s way out of the ordinary. Feels more like a lagoon than the ocean out there.

We start off quiet. Friday the 3rd shows just 1ft of SW swell with a nasty 25 km/h cross-on wind – forget it. Saturday morning the 4th is glassy calm with 1ft of SW swell, a long 18-second period, but only weak energy (112). You’ll get some clean little rollers, but you’ll be working for them.

Sunday morning the 5th is the real deal. That SW groundswell bumps to 2ft with a 21-second period – super long period – and it’s glass flat. Energy hits a strong 820, so there’s proper grunt behind those sets. On a point like San Mateo, those long lines will wrap in smooth, just expect longer lulls between sets. This is the best session of the whole 16 days.

Monday the 6th pushes up to 3ft and then 5ft in the afternoon, but the wind goes cross or cross-on, so it gets messy. Tuesday the 7th holds 5ft in the morning with light cross-shore wind – surfable but not glassy.

From Wednesday the 8th through Friday the 10th, it’s downhill: cross-onshore wind and dropping swell. Saturday the 11th and Sunday the 12th offer marginal 4ft to 3ft SW swell with light cross breezes – cleanish but nothing special.

Tuesday morning the 14th gives another clean shot: glassy conditions, 3ft SW swell, 14-second period, energy of 360. It’s modest but smooth.

The last few days – 15th to 18th July – are mostly tiny, weak, and choppy. Wednesday morning the 15th has 1ft of SW swell with a light cross-offshore wind that keeps it clean, but it’s barely there.

The one to circle is Sunday morning the 5th at San Mateo: glassy, 2ft of SW groundswell, that very long 21-second period, and strong energy (820). That’s your call to paddle out. The rest is just filler.

Rusty.

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