Is it good to snorkel or dive at Hanauma Bay today?

On Wednesday, November 4 DiveVis rates Hanauma Bay Caution from shore (35/100) (Gusts 37 kt). Possible, but check conditions on site before going in.

What is the water visibility at Hanauma Bay today?

Fair, 8–15 ft (2.5–4.5 m) expected on Wednesday, November 4, with 90% confidence. It is an estimate from wind, swell, rain, runoff and ocean conditions, not a measurement.

What's the best time to get in the water at Hanauma Bay today?

Between 06:00 and 18:00 HST on Wednesday, November 4, from shore.

How do you get in the water at Hanauma Bay?

Swim in from shore (no kayaks or boats).

DiveVis › Oahu › Hanauma Bay

Hanauma Bay, Oahu: dive & snorkel conditions

Hanauma Bay, Wednesday, November 4: visibility Fair, 8–15 ft (2.5–4.5 m), and Caution from shore (35/100) to dive or snorkel, best 06:00–18:00 HST.

Updated 22:04 HST; the forecast refreshes every 6 hours. Confidence 90%.

Open Hanauma Bay in the app

No Hawaii DOH Brown Water Advisory near Hanauma Bay today.

Today by how you get in

Shore

– Caution 35

Gusts 37 kt

Best 06:00–18:00 HST

Nearshore reef

Next 7 days at Hanauma Bay

Day	Divability	Visibility	Wind	Swell	Confidence
Wed 4	– Caution 35 from shore	Fair 8–15 ft	15 kt ENE	4.9 ft @ 7s	90%
Thu 5	– Caution 35 from shore	Fair 8–15 ft	16 kt ENE	5.2 ft @ 7s	86%
Fri 6	– Caution 35 from shore	Good 15–25 ft	15 kt ENE	5.6 ft @ 7s	81%
Sat 7	– Caution 35 from shore	Good 15–25 ft	16 kt NE	5.6 ft @ 7s	74%
Sun 8	– Caution 35 from shore	Good 15–25 ft	15 kt NE	5.9 ft @ 7s	68%
Mon 9	– Caution 35 from shore	Good 15–25 ft	16 kt ENE	5.9 ft @ 7s	61%
Tue 10	Pending	Pending	—	—	—

About Hanauma Bay

Hanauma Bay faces south-southeast (160°): swell from that side arrives head-on.
Swim in from shore (no kayaks or boats).
Water 100 ft (30 m) deep starts about 0.6 km out.
Blue water (300 ft / 100 m and deeper) is about 1.2 km out.

What spoils the visibility here

South swells, mostly May to September, reach it.
It is sheltered from the usual trade winds; Kona (southerly) winds and swells are its weak spot.
Heavy rain sends brown runoff into the water for a few days; Hawaii DOH posts Brown Water Advisories when it does.

Questions about Hanauma Bay

Is it good to snorkel or dive at Hanauma Bay today?: On Wednesday, November 4 DiveVis rates Hanauma Bay Caution from shore (35/100) (Gusts 37 kt). Possible, but check conditions on site before going in.
What is the water visibility at Hanauma Bay today?: Fair, 8–15 ft (2.5–4.5 m) expected on Wednesday, November 4, with 90% confidence. It is an estimate from wind, swell, rain, runoff and ocean conditions, not a measurement.
What's the best time to get in the water at Hanauma Bay today?: Between 06:00 and 18:00 HST on Wednesday, November 4, from shore.
How do you get in the water at Hanauma Bay?: Swim in from shore (no kayaks or boats).

Other Oahu spots today

Estimates from wind, swell, rain, runoff, tides and ocean conditions; check conditions on site before going in. How the forecast works.