Spot report
🇺🇸Alcatraz / Aquatic Park, California
updated 04:45 local · open-meteo
The most famous open-water swim in North America, with the Dolphin Club and South End Rowing Club swimming Aquatic Park daily since the 1870s and dozens of organised Alcatraz crossings a year.
Heads up · 50-60F water, shipping traffic, strong tidal currents; escorted crossings only
What's rideable right now
Wind
Water
Mountain
River
Climb
RIDEABLEsending temps — 11 °C
Best windows this week
- Wed 7am–6pmRIDEABLE
sending temps — 10 °C · 12 h
- Thu 7am–6pmRIDEABLE
sending temps — 10 °C · 12 h
- Sat 7am–6pmRIDEABLE
sending temps — 17 °C · 12 h
This week
Today
24 km/h · 1.1 m
10–22 °C
Thu
21 km/h · 0.9 m
10–25 °C
Fri
10 km/h · 0.8 m
18–30 °C
Sat
11 km/h · 1.3 m
16–24 °C
Sun
20 km/h · 1.6 m
14–17 °C
Mon
19 km/h · 1.6 m
13–17 °C
Tue
20 km/h · 1.9 m
13–16 °C
bars: daily max wind · wave · best sport each day
Pack list
- Water 16.4 °C → 4/3 with boots
- UV 0 — low → no sun worries today
- 11 °C → light layer you can stash
- Daylight 07:17–18:33 → golden hour from 17:33
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