Mareloa

China Beach, California

Near San Francisco · 4.1 mi

2 photos

Tide

Falling tide, -1.2 ft
  • Low 01:00 AM · -1.1 ft
  • High 07:00 AM · 4.0 ft
  • Low 02:00 PM · -1.3 ft
  • High 08:00 PM · 2.7 ft
Tide calendar

Sea conditions

sea model sampled 1.9 mi from the beach

Temperature and conditions come from a limited-resolution coastal model, not an observation at the beach. Do not use for navigation or to conclude that bathing is safe.

Estimated surface
≈ 63.3 °F
Waves
3.9 ft
Period
10.6 s
Swell
2.8 ft W
Modelled current
1.1 mph
Surface temperature · 24 h≈ 63.1 °F – 63.5 °F

Local conditions

UV
4.1
Cloud cover
100 %
Sunrise
06:39 AM
Sunset
05:06 PM

Temperature over 48 hours

Hourly temperature forecast

This point remains readable, but it is outside the common selectable horizon.

Seven-day weather outlook

Place characteristics

Distance to town
San Francisco · 4.0 mi
Length
748 ft
shore_axis_deg
61

Practical information

RecordedNot documented

© OpenStreetMap · Oct 20, 2026 · check on site · Sources

Surface
Sand
Wind on the beach
Wind in your face

Do you know this beach?

Is the beach easy to reach?

Today’s windows

Calculated at 01:16 PM · rules coast-v5

  • Very good window
  • Possible window
  • Less favourable
  • Prohibited
  • Check first
  • Family beach time — Check first

    Family beach time

    02:00 PM–05:00 PM · Check first

    • moderate wind
    • low rain risk
    • mild temperature

    Confidence 0 % · rules coast-v5 · Sources : Open-Meteo, modèle SMOC Météo-France/Copernicus Marine · Données météo par Open-Meteo.com

  • Photography — Possible window

    Photography

    03:06 PM–05:06 PM · Possible window

    • moderate wind
    • low rain risk
    • late-day light

    High score, low confidence: the data behind this window is incomplete or approximate. Check the conditions on site.

    Confidence 55 % · rules coast-v5 · Sources : Open-Meteo, modèle SMOC Météo-France/Copernicus Marine · Données météo par Open-Meteo.com

  • Sunset — Possible window

    Sunset

    04:21 PM–05:51 PM · Possible window

    • moderate wind
    • low rain risk
    • around sunset

    High score, low confidence: the data behind this window is incomplete or approximate. Check the conditions on site.

    Confidence 55 % · rules coast-v5 · Sources : Open-Meteo, modèle SMOC Météo-France/Copernicus Marine · Données météo par Open-Meteo.com

  • Shore gathering — Check first

    Shore gathering

    12:00 AM–03:00 AM · Check first

    • physical window around low tide

    Confidence 40 % · rules coast-v5 · Sources : Open-Meteo, modèle SMOC Météo-France/Copernicus Marine · Données météo par Open-Meteo.com

  • Beach run — Possible window

    Beach run

    08:00 AM–09:30 AM · Possible window

    • moderate wind
    • low rain risk
    • cooler hour for running

    High score, low confidence: the data behind this window is incomplete or approximate. Check the conditions on site.

    Confidence 55 % · rules coast-v5 · Sources : Open-Meteo, modèle SMOC Météo-France/Copernicus Marine · Données météo par Open-Meteo.com

  • Coastal walk — Possible window

    Coastal walk

    10:00 AM–12:00 PM · Possible window

    • moderate wind
    • low rain risk
    • comfortable walking hour

    High score, low confidence: the data behind this window is incomplete or approximate. Check the conditions on site.

    Confidence 55 % · rules coast-v5 · Sources : Open-Meteo, modèle SMOC Météo-France/Copernicus Marine · Données météo par Open-Meteo.com

Beaches nearby

Discovery score: distance, available annual classification and catalogue quality. It is neither real-time health advice nor a safety conclusion.

Advanced
Tide, weather and sea conditions modelled by Open‑Meteo — not a navigation tool

Country profile

Languages
English
Currency
US Dollar
Driving side
right

Wikidata · CC0 · Retrieved on Sep 18, 2026

Sources and method

Tide heights
Heights retain the vertical reference supplied by the source and are not an official hydrographic zero.
Sea temperature and conditions
Temperature and conditions come from a limited-resolution coastal model, not an observation at the beach. Do not use for navigation or to conclude that bathing is safe.
Beach characteristics
These place characteristics are recorded from the linked sources. They describe the place, not current conditions.

Source & freshness

U.S. Environmental Protection Agency — RAD and Beach Attributes; U.S. federal government work, public domain (17 U.S.C. §105)Aging

Official catalogue · Bathing water quality

Method and source ↗
Copernicus DEM GLO-30 -- (c) DLR e.V. 2010-2014 and Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; distributed via the AWS Open Data Registry (bucket copernicus-dem-30m).Fresh

Additional source

Method and source ↗

Modelled sea level: limited coastal accuracy, and a different reference from chart datum.

GeoNames · CC BY 4.0

Modelled data and this estimate do not replace an official source. Mareloa is not a navigation tool.

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Mareloa

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