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São Martinho do Porto

São Martinho do Porto / Foz do Arelho (Lagoa de Óbidos) · Beach break · faces southwest

No rideable window in the next 8 days

Not so great right now

Dark now — see the daylight hours below.

Best left today
15:00–16:00
in 14 h
0.3 of 5Not so great
≈0.4 m · wind 14 kn
Size for you now≈0.2 msmall for you

Wind

Nsealand
2 kn
gusts 2
glassy
Light air, from the west
Building to 12 kn by 20:00
Best here: offshore, from the northeast

Tide

2.3 m
falling
  • Low05:551.3 m
  • High12:112.6 m
  • Low18:331.0 m

Official tide predictions (WorldTides).

Best tide: Mid–high
Next 02:00–04:00

Next 8 days

Tap a day for hour by hourPick a day

Best 15:00–16:00. At 15:00: Not so great, 0.3 out of 5 — about 0.4 m, wind 14 kn cross-offshore. Tide 2.0 m.

Hour by hour, Today
TimeScoreSizeWindGustsTide
08:000.1 out of 50.2 m12 offshore201.6 m
09:000.2 out of 50.2 m12 offshore201.9 m
10:000.2 out of 50.2 m12 offshore212.2 m
11:000.1 out of 50.3 m11 offshore202.5 m
12:000.1 out of 50.3 m11 cross-offshore192.6 m
13:000.1 out of 50.3 m12 cross-offshore212.5 m
14:000.3 out of 50.4 m14 cross-offshore232.3 m
15:000.3 out of 50.4 m14 cross-offshore242.0 m
16:000.2 out of 50.4 m14 cross-offshore241.6 m
17:000.1 out of 50.4 m13 cross-offshore231.3 m
18:000.1 out of 50.4 m13 cross-offshore221.1 m
19:000.1 out of 50.4 m12 cross-offshore211.1 m
20:000.1 out of 50.4 m12 cross-offshore191.2 m
Scoreout of 5 · 0 Not so great, 5 Fantastic

Hour by hour

Today

Best 15:00–16:00. At 15:00: Not so great, 0.3 out of 5 — about 0.4 m, wind 14 kn cross-offshore. Tide 2.0 m.

Hour by hour, Today
TimeScoreSizeWindGustsTide
08:000.1 out of 50.2 m12 offshore201.6 m
09:000.2 out of 50.2 m12 offshore201.9 m
10:000.2 out of 50.2 m12 offshore212.2 m
11:000.1 out of 50.3 m11 offshore202.5 m
12:000.1 out of 50.3 m11 cross-offshore192.6 m
13:000.1 out of 50.3 m12 cross-offshore212.5 m
14:000.3 out of 50.4 m14 cross-offshore232.3 m
15:000.3 out of 50.4 m14 cross-offshore242.0 m
16:000.2 out of 50.4 m14 cross-offshore241.6 m
17:000.1 out of 50.4 m13 cross-offshore231.3 m
18:000.1 out of 50.4 m13 cross-offshore221.1 m
19:000.1 out of 50.4 m12 cross-offshore211.1 m
20:000.1 out of 50.4 m12 cross-offshore191.2 m
Scoreout of 5 · 0 Not so great, 5 Fantastic

Water

16.0 °C
4/3 fullsuit (boots optional)
This week 15.4–16.0 °C
Air 15 °C · UV 0 Low · Sea Moderate

Live cam

São Martinho do Porto
Live on MEO Beachcam

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Spot guide

Best swell
S–WSW
Best wind
NNE (offshore)
Best tide
Mid–high
First–last light
07:26–19:18

Almost fully enclosed shell-shaped bay; barely breaks except when a big W/NW swell wraps through the narrow south mouth — the go-to flat-day beginner/SUP spot, not a real swell magnet.

Hazards very weak/inconsistent surf most days · boat traffic near the harbor and inlet · crowded swim/surf shared space in summer

Shared forecast The offshore forecast here is shared with Salir do Porto. Wave models resolve about 8 km, so neighbouring beaches read the same swell. What separates them is orientation, seabed and tide, not the forecast.

Nearby spots Salir do Porto, Foz do Arelho, Nazaré — Praia (town beach), Praia do Norte / Nazaré Canyon, Belgas (Praia d'El Rey)

Swimming conditionsTide timesSea temperature

Guides How to Read a Surf Forecast for Portugal · Beach Facing & Surf Direction on Portugal's Coast · Tides and Surf Portugal: Best Tide for Surfing

Best time of year

Jan
46.6%
Feb
42.9%
Mar
29.3%
Apr
26.3%
May
10.2%
Jun
7.2%
Jul
7.7%
Aug
16.7%
Sep
29.1%
Oct
25%
Nov
33.7%
Dec
45%
Clean Blown out Too small

Local notes

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Scores and sizes are forecasts for Intermediate surfers, out of 5. Times are Lisbon time. Size is our estimate of the breaking wave at this beach, not the offshore swell.