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CB Alphasub

SpainDirections
3mm wetsuit typical

CB Alphasub at a glance

CB Alphasub is a dive site in Spain. Typically most favorable Aug · from 3 years of archive data. Recent reports put the water around 24°C (75°F). Check the latest conditions and entry details before you go.

Favorable window now· until 19:00 · sunset 18:18

Forecast for this hour · 9:00 · run 2 h ago
0.1 m (0.3 ft)waves — under half a meter expected (waves — under a foot expected)

Tap a factor for its source and model point · Forecast 24°C · seasonal avg 21°C ( · Forecast 75°F · seasonal avg 70°F)

Dive windows this week

Lightest wind: Mon
Mon8:00–19:00 favorable

0.1 m waves · 4 kn wind (0.4 ft waves · 4 kn wind)

Tue8:00–19:00 favorable

0.1 m waves · 7 kn wind (0.4 ft waves · 7 kn wind)

Wed8:00–12:00 favorable, 12:00–18:00 moderate, 18:00–19:00 favorable

0.3 m waves · 12 kn wind (0.9 ft waves · 12 kn wind)

Thu8:00–11:00 favorable, 11:00–17:00 moderate, 17:00–19:00 favorable

0.6 m waves · 12 kn wind (2.0 ft waves · 12 kn wind)

Fri8:00–19:00 favorable

0.6 m waves · 11 kn wind (1.8 ft waves · 11 kn wind)

Sat8:00–19:00 favorable

0.3 m waves · 5 kn wind (1.1 ft waves · 5 kn wind)

Sun8:00–19:00 favorable

0.1 m waves · 5 kn wind (0.4 ft waves · 5 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 6:59 · Sunrise 7:26 · Sunset 18:18 · some windows run past sunset

Source: Open-Meteo marine · model point 3.7 km from site · updated 26 Oct, 06:23 CET

Forecast only — always assess conditions on site.

Compare this weekend’s windows near CB Alphasub

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?

Best months, historically

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

  1. January, 76% of days have historically been favorable, water has typically been 15°C (60°F), waves have typically been 1.0 m (3.4 ft), wind has typically been 10 knots
  2. February, 76% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 11 knots
  3. March, 68% of days have historically been favorable, water has typically been 15°C (60°F), waves have typically been 1.2 m (4.0 ft), wind has typically been 12 knots
  4. April, 79% of days have historically been favorable, water has typically been 17°C (63°F), waves have typically been 1.1 m (3.4 ft), wind has typically been 11 knots
  5. May, 94% of days have historically been favorable, water has typically been 20°C (67°F), waves have typically been 0.9 m (2.9 ft), wind has typically been 10 knots
  6. June, 91% of days have historically been favorable, water has typically been 23°C (73°F), waves have typically been 0.9 m (2.8 ft), wind has typically been 10 knots
  7. July, 96% of days have historically been favorable, water has typically been 26°C (79°F), waves have typically been 0.8 m (2.7 ft), wind has typically been 10 knots
  8. August, 98% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 0.8 m (2.7 ft), wind has typically been 10 knots, historically most favorable
  9. September, 91% of days have historically been favorable, water has typically been 25°C (77°F), waves have typically been 1.0 m (3.1 ft), wind has typically been 10 knots
  10. October, 88% of days have historically been favorable, water has typically been 21°C (70°F), waves have typically been 1.0 m (3.1 ft), wind has typically been 10 knots
  11. November, 89% of days have historically been favorable, water has typically been 18°C (65°F), waves have typically been 0.9 m (2.9 ft), wind has typically been 9 knots
  12. December, 96% of days have historically been favorable, water has typically been 16°C (62°F), waves have typically been 0.8 m (2.6 ft), wind has typically been 8 knots

August has typically 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 recorded at this site

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated July 2026

Site details

CB Alphasub is a dive site located in Spain.

No hazards recorded for this site yet — that never means there are none. Ask a local operator before you dive.

Reviews

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