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IntermediateBoat entry

Aggi

California, United States
Open Water suggested6–21 m depthBoat entry5mm wetsuit typical

Boat dive — see Entry & access.

Aggi at a glance

Aggi is an intermediate boat dive site in California, United States with depths of 6–21 m (20–69 ft). Typically most favorable Sep · from 3 years of archive data. Divers commonly see kelp forest fish. Recent reports put the water around 20°C (67°F). Check the latest conditions and entry details before you go.

Marine model · graded 14h ago
1.2 mwaves — about a meter expected

Tap a factor for its source and model point · Forecast 20°C · seasonal avg 19°C

Site hazards: Remote Channel Islands boat logistics, cold water, swell/surge around Santa Rosa Island, kelp, possible current, low visibility, and protected cultural resource restrictions.

Read the full hazards ↓

Dive windows this week

Best: Thu
Thu7:00–16:00
Fri7:00–16:00
Sat8:00–13:00
Sun9:00–14:00
Mon7:00–20:00
Tue7:00–20:00
Wed—

Favorable windowModerate window— no window

First light 6:15 · Sunrise 6:41 · Sunset 19:14

Source: Open-Meteo marine · model point 3.3 km from site · graded 14h ago

Forecast only — always assess conditions on site.

Forecast · NOAA tide model

Tide & slack timing

Loading tide predictions

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Best time: Late summer through winter is commonly favored for Channel Islands visibility, but the site should be selected only when swell and wind are suitable.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. Jan13%14°C2.4 m
  2. Feb16%14°C2.4 m
  3. Mar18%13°C2.4 m
  4. Apr32%13°C2.0 m
  5. May26%14°C1.9 m
  6. Jun34%15°C1.8 m
  7. Jul55%17°C1.6 m
  8. Aug48%18°C1.6 m
  9. Sep57%19°C1.6 m
  10. Oct38%18°C1.8 m
  11. Nov28%16°C2.0 m
  12. Dec28%16°C2.2 m

September hastypically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

Fills & rentals nearby

No dive shops mapped within 25 km. Know one? Add it to the map.

Data updated July 2026

Site details

Historic three-masted steel sailing ship wrecked on Talcott Shoal off Santa Rosa Island. NOAA and NPS materials document underwater wreck imagery, making this a legitimate Channel Islands boat-wreck target for experienced cold-water divers. Expect scattered wreckage integrated with reef/kelp habitat rather than a complete ship.

boatwreck

Remote Channel Islands boat logistics, cold water, swell/surge around Santa Rosa Island, kelp, possible current, low visibility, and protected cultural resource restrictions.

Reviews

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