MARINE REPORT / 72 HOURS

Nosy Be Snorkel Report Today

Madagascar · Updated Sun 05:06 (EAT) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 05:06 (EAT)

Nosy Be has a usable snorkeling window around Sun 08:00. The main thing to watch is tide/current.

Right now (forecast)

Good · 6.6/10

Sun 07:00 (EAT)

Later today

Good · 5.9/10

Sun 10:00 (EAT)

Next three days

Excellent · 7.4/10

Tue 06:00 (EAT)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 5.9/10

Best time: Sun 08:00

Main risk: Tide/Current

Best morning signal: Sun 10:00 (Good).

Best afternoon signal: Sun 13:00 (Good). Peak afternoon wind is about 5.9 m/s.

Email me when it is good

Sunrise

05:19

Sunset

17:44

Water

28.3°C

Max air

29.5°C

Sky

Partly cloudy

63% cloud

Good model window in the next 72 hours

Next good model window: Sun 08:00–13:00 (36% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Good conditions

Main blocker: Tide/current

Monday

✅ Good conditions

Main blocker: Tide/current

Tuesday

✅ Excellent conditions

Main blocker: Tide/current

Best available hours

The next good model window starts at Sun 08:00 and lasts until 13:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (69 hours)
  • Waves (47 hours)
  • Darkness (35 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 34/100

Low peak drift risk around Sun 15:00.

warm water supports seasonal jellyfish activity; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Next early morning high tide: Wed 00:00

Sun 20:00, Mon 09:00, Mon 23:00, Tue 11:00, Wed 00:00

Nearby alternatives in Madagascar

No nearby alternatives available.

Advanced forecast data

Viewing historical data

Fri 07:00 – Mon 07:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.69 around Fri 10:00; 12 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

6/24 sampled hours stay at or below 0.36m (range 0.34m to 0.48m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.99 to 5.06m/s).

Tides range from -0.89m to 2.12m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

  • Wave height (35%): best below 0.36m, then decreases as it rises.
  • Wind speed (25%): best below 5.4m/s, lower is better.
  • Sea surface temperature (15%): best within 20.6°C to 30.4°C.
  • Tide and currents (15%): best around slack/high-tide windows.
  • Daylight (10%): visibility is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Fri 07:00 0.38 · high 1.65 · good 27.60 · good Good
Fri 08:00 0.36 · good 1.29 · good 27.60 · good Good
Fri 09:00 0.36 · good 0.99 · good 27.70 · good Good
Fri 10:00 0.36 · good 1.71 · good 27.70 · good Good
Fri 11:00 0.34 · good 2.34 · good 27.80 · good Good
Fri 12:00 0.34 · good 2.89 · good 28.00 · good Good
Fri 13:00 0.36 · good 3.49 · good 28.10 · good Good
Fri 14:00 0.40 · high 4.14 · good 28.20 · good Good
Fri 15:00 0.42 · high 4.97 · good 28.30 · good Good
Fri 16:00 0.44 · high 5.06 · good 28.30 · good Good
Fri 17:00 0.44 · high 4.40 · good 28.30 · good Good
Fri 18:00 0.46 · high 3.51 · good 28.30 · good Poor
Fri 19:00 0.44 · high 2.47 · good 28.20 · good Poor
Fri 20:00 0.44 · high 1.61 · good 28.20 · good Poor
Fri 21:00 0.42 · high 1.14 · good 28.20 · good Poor
Fri 22:00 0.42 · high 1.16 · good 28.20 · good Poor
Fri 23:00 0.42 · high 1.28 · good 28.10 · good Poor
Sat 00:00 0.42 · high 1.15 · good 28.10 · good Poor
Sat 01:00 0.42 · high 1.61 · good 28.10 · good Poor
Sat 02:00 0.42 · high 2.47 · good 28.10 · good Poor
Sat 03:00 0.42 · high 3.21 · good 28.10 · good Poor
Sat 04:00 0.44 · high 3.49 · good 28.10 · good Poor
Sat 05:00 0.46 · high 3.59 · good 28.00 · good Poor
Sat 06:00 0.48 · high 3.95 · good 28.00 · good Fair
Sat 07:00 0.48 · high 4.10 · good 28.00 · good Fair
Sat 08:00 0.50 · high 4.14 · good 28.00 · good Fair
Sat 09:00 0.50 · high 3.40 · good 28.10 · good Good
Sat 10:00 0.48 · high 2.72 · good 28.10 · good Good
Sat 11:00 0.48 · high 1.79 · good 28.20 · good Good
Sat 12:00 0.46 · high 0.75 · good 28.30 · good Good
Sat 13:00 0.44 · high 1.39 · good 28.40 · good Good
Sat 14:00 0.40 · high 2.58 · good 28.50 · good Good
Sat 15:00 0.38 · high 4.25 · good 28.60 · good Good
Sat 16:00 0.40 · high 4.49 · good 28.60 · good Good
Sat 17:00 0.40 · high 3.65 · good 28.60 · good Good
Sat 18:00 0.42 · high 3.59 · good 28.50 · good Poor
Sat 19:00 0.42 · high 2.68 · good 28.50 · good Poor
Sat 20:00 0.40 · high 0.39 · good 28.50 · good Poor
Sat 21:00 0.40 · high 1.82 · good 28.40 · good Poor
Sat 22:00 0.42 · high 3.51 · good 28.40 · good Poor
Sat 23:00 0.46 · high 2.87 · good 28.40 · good Poor
Sun 00:00 0.48 · high 2.90 · good 28.30 · good Poor
Sun 01:00 0.52 · high 3.23 · good 28.30 · good Poor
Sun 02:00 0.54 · high 3.93 · good 28.30 · good Poor
Sun 03:00 0.58 · high 3.74 · good 28.30 · good Poor
Sun 04:00 0.58 · high 3.57 · good 28.30 · good Poor
Sun 05:00 0.56 · high 3.52 · good 28.20 · good Poor
Sun 06:00 0.56 · high 3.64 · good 28.20 · good Fair
Sun 07:00 0.54 · high 3.75 · good 28.20 · good Fair
Sun 08:00 0.52 · high 3.61 · good 28.20 · good Good
Sun 09:00 0.50 · high 2.75 · good 28.30 · good Good
Sun 10:00 0.48 · high 0.80 · good 28.30 · good Good
Sun 11:00 0.44 · high 0.87 · good 28.40 · good Good
Sun 12:00 0.42 · high 1.55 · good 28.50 · good Good
Sun 13:00 0.40 · high 2.11 · good 28.60 · good Good
Sun 14:00 0.40 · high 4.25 · good 28.50 · good Good
Sun 15:00 0.40 · high 4.82 · good 28.60 · good Good
Sun 16:00 0.42 · high 5.14 · good 28.60 · good Good
Sun 17:00 0.42 · high 4.61 · good 28.60 · good Good
Sun 18:00 0.44 · high 3.67 · good 28.50 · good Poor
Sun 19:00 0.44 · high 2.06 · good 28.50 · good Poor
Sun 20:00 0.42 · high 0.92 · good 28.50 · good Poor
Sun 21:00 0.42 · high 0.76 · good 28.40 · good Poor
Sun 22:00 0.42 · high 1.03 · good 28.40 · good Poor
Sun 23:00 0.42 · high 2.88 · good 28.40 · good Poor
Mon 00:00 0.42 · high 2.86 · good 28.30 · good Poor
Mon 01:00 0.44 · high 2.80 · good 28.30 · good Poor
Mon 02:00 0.46 · high 3.45 · good 28.30 · good Poor
Mon 03:00 0.48 · high 3.68 · good 28.20 · good Poor
Mon 04:00 0.50 · high 3.64 · good 28.20 · good Poor
Mon 05:00 0.50 · high 3.45 · good 28.20 · good Poor
Mon 06:00 0.52 · high 3.58 · good 28.10 · good Good