Black all day today, then worth blocking time tomorrow, 12:00–17:22 — blue to red, up to 1.9 m.

Through the window the wind is cross-shore, gusting 64 km/h. High confidence: both forecasts agree. 2 more windows in the next seven days. There's also a chance Thursday, 07:32–12:00: blue, up to 0.7 m (low confidence: our main forecast shows it, the second doesn't, but it's more than three days out). All day today: 5.9 m waves with onshore gusts to 94 km/h, storm surge of +1.3 m.

The next seven days at Petten — for blue and red days, updated 11:55

Sunday Oct 25: black (experts only), up to 4.3 m
Monday Oct 26: blue to red, 12:00–17:22, up to 1.9 m, 7 s, wind cross-shore
Tuesday Oct 27: blue, 07:28–15:00, up to 1.2 m, 6 s, wind cross-shore
Wednesday Oct 28: blue to red, 07:30–17:18, up to 1.5 m, 6 s, wind cross-onshore
Thursday Oct 29: blue, 07:32–12:00, up to 0.7 m, 6 s, wind onshore (a chance)
Friday Oct 30: green, up to 0.4 m
Saturday Oct 31: green, up to 0.3 m

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About Petten

In front of the Pettemer sea wall and the Hondsbossche dunes. The first sandbank lies 100–150 m out and can be very shallow at low water; the best waves often come on the rising tide at the second bank, about 350 m out.

Expect a strong current, a strong shorebreak, rocky breakwaters and groynes buried under the sand. A south wind is a little weaker here, which can make it an option in a storm.

The beach faces WNW (285°). Offshore wind, the clean kind, blows from between NE and SSE; onshore wind from between SW and N chops it up; the rest is cross-shore.

We take the wind 5 km out to sea, check the waves against Rijkswaterstaat's Hollandse Kust Noord platform station 26 km away, and read storm surge at the Den Helder gauge.

Along the coast: Egmond aan Zee to the south, Texel to the north.