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São Martinho do Porto

São Martinho do Porto / Foz do Arelho (Lagoa de Óbidos)

9.4

Flat calm

Now

→ Steady
🌊 16.0°CwaterSeaModerate2kn WUV0 LowTide2.3m ↓falling · low in 4 h 46 min

calmest 08:00 · 8.9

Hour by hour

TimeCalmSwellWindTidewater
08:008.90.2m12kn NNE1.6m ↑16.0°C
09:008.70.2m12kn NNE1.9m ↑16.0°C
10:008.70.2m12kn NNE2.2m ↑16.0°C
11:008.60.3m11kn N2.5m ↑16.0°C
12:008.40.3m11kn N2.6m ↑16.0°C
13:008.10.3m12kn N2.5m ↓16.0°C
14:007.80.3m14kn N2.3m ↓16.0°C
15:007.60.4m14kn N2.0m ↓16.0°C
16:007.60.4m14kn N1.6m ↓16.0°C
17:007.60.4m13kn N1.3m ↓16.0°C
18:007.60.4m13kn N1.1m ↓16.0°C
19:007.60.4m12kn N1.1m ↑16.0°C
20:007.60.4m12kn N1.2m ↑15.9°C

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

Swim alerts

How this is calculated

Flatness is modelled from the wave forecast. Rips, flags and lifeguards are not in this data — always judge the beach in front of you.

Guides Beach Day Checklist: Portugal Coast Conditions · Snorkeling Conditions in Portugal: How to Read Them · Tides and Surf Portugal: Best Tide for Surfing