MARINE REPORT / 72 HOURS

Nosy Be Snorkel Report Today

Madagascar · Updated Sun 08:14 (EAT) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 08:14 (EAT)

Nosy Be has a usable snorkeling window around Sun 11:00. The main thing to watch is tide/current.

Right now (forecast)

Good · 5.9/10

Sun 10:00 (EAT)

Later today

Good · 5.8/10

Sun 13:00 (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: 5.8/10

Best time: Sun 11:00

Main risk: Tide/Current

Best morning signal: Sun 11:00 (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

28.4°C

Max air

29.4°C

Sky

Cloudy

78% cloud

Good model window in the next 72 hours

Next good model window: Sun 11:00–13:00 (35% 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 11:00 and lasts until 13:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (69 hours)
  • Waves (45 hours)
  • Darkness (36 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

Tue 10:00 – Fri 10:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.72 around Tue 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.

1/24 sampled hours stay at or below 0.36m (range 0.36m to 0.48m).

Wind is at or below 5.4m/s in 22/24 sampled hours (range 0.39 to 6.15m/s).

Tides range from -0.2m to 1.36m; 1 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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Tue 10:00 0.38 · high 0.39 · good 27.70 · good Good
Tue 11:00 0.38 · high 2.05 · good 27.80 · good Good
Tue 12:00 0.36 · good 3.75 · good 27.90 · good Good
Tue 13:00 0.38 · high 4.07 · good 27.90 · good Good
Tue 14:00 0.38 · high 4.69 · good 28.00 · good Good
Tue 15:00 0.40 · high 5.51 · high 28.00 · good Good
Tue 16:00 0.42 · high 6.15 · high 28.00 · good Good
Tue 17:00 0.42 · high 5.15 · good 28.00 · good Good
Tue 18:00 0.44 · high 3.43 · good 28.00 · good Poor
Tue 19:00 0.44 · high 2.21 · good 27.90 · good Poor
Tue 20:00 0.46 · high 2.38 · good 27.90 · good Poor
Tue 21:00 0.48 · high 2.20 · good 27.90 · good Poor
Tue 22:00 0.46 · high 1.36 · good 27.80 · good Poor
Tue 23:00 0.44 · high 2.50 · good 27.80 · good Poor
Wed 00:00 0.42 · high 2.33 · good 27.80 · good Poor
Wed 01:00 0.42 · high 1.27 · good 27.80 · good Poor
Wed 02:00 0.40 · high 0.39 · good 27.70 · good Poor
Wed 03:00 0.40 · high 0.70 · good 27.70 · good Poor
Wed 04:00 0.40 · high 1.10 · good 27.70 · good Poor
Wed 05:00 0.40 · high 1.54 · good 27.70 · good Poor
Wed 06:00 0.40 · high 1.86 · good 27.60 · good Good
Wed 07:00 0.40 · high 2.53 · good 27.60 · good Good
Wed 08:00 0.38 · high 2.86 · good 27.60 · good Good
Wed 09:00 0.38 · high 0.71 · good 27.60 · good Good
Wed 10:00 0.36 · good 0.51 · good 27.70 · good Good
Wed 11:00 0.36 · good 1.82 · good 27.70 · good Good
Wed 12:00 0.34 · good 2.37 · good 27.80 · good Good
Wed 13:00 0.34 · good 4.12 · good 27.90 · good Good
Wed 14:00 0.40 · high 4.14 · good 27.90 · good Good
Wed 15:00 0.42 · high 4.94 · good 28.00 · good Good
Wed 16:00 0.44 · high 5.13 · good 28.00 · good Good
Wed 17:00 0.44 · high 4.56 · good 28.00 · good Good
Wed 18:00 0.46 · high 3.47 · good 27.90 · good Poor
Wed 19:00 0.48 · high 2.58 · good 27.90 · good Poor
Wed 20:00 0.48 · high 2.66 · good 27.90 · good Poor
Wed 21:00 0.50 · high 2.49 · good 27.80 · good Poor
Wed 22:00 0.48 · high 2.31 · good 27.80 · good Poor
Wed 23:00 0.48 · high 1.81 · good 27.80 · good Poor
Thu 00:00 0.46 · high 1.57 · good 27.70 · good Poor
Thu 01:00 0.44 · high 1.85 · good 27.70 · good Poor
Thu 02:00 0.44 · high 2.00 · good 27.70 · good Poor
Thu 03:00 0.42 · high 1.35 · good 27.70 · good Poor
Thu 04:00 0.42 · high 1.64 · good 27.70 · good Poor
Thu 05:00 0.40 · high 1.34 · good 27.60 · good Poor
Thu 06:00 0.40 · high 1.27 · good 27.60 · good Good
Thu 07:00 0.40 · high 1.03 · good 27.60 · good Good
Thu 08:00 0.38 · high 0.82 · good 27.60 · good Good
Thu 09:00 0.38 · high 0.68 · good 27.60 · good Good
Thu 10:00 0.38 · high 0.15 · good 27.70 · good Good
Thu 11:00 0.36 · good 1.37 · good 27.70 · good Good
Thu 12:00 0.36 · good 2.30 · good 27.80 · good Good
Thu 13:00 0.38 · high 3.75 · good 27.90 · good Fair
Thu 14:00 0.44 · high 4.95 · good 28.00 · good Fair
Thu 15:00 0.46 · high 5.17 · good 27.80 · good Fair
Thu 16:00 0.46 · high 5.21 · good 27.80 · good Good
Thu 17:00 0.46 · high 5.17 · good 27.80 · good Fair
Thu 18:00 0.46 · high 3.46 · good 27.80 · good Poor
Thu 19:00 0.46 · high 2.33 · good 27.80 · good Poor
Thu 20:00 0.46 · high 1.99 · good 27.70 · good Poor
Thu 21:00 0.46 · high 1.54 · good 27.70 · good Poor
Thu 22:00 0.46 · high 1.66 · good 27.70 · good Poor
Thu 23:00 0.44 · high 1.13 · good 27.70 · good Poor
Fri 00:00 0.44 · high 0.45 · good 27.70 · good Poor
Fri 01:00 0.44 · high 0.10 · good 27.70 · good Poor
Fri 02:00 0.42 · high 0.60 · good 27.70 · good Poor
Fri 03:00 0.40 · high 1.49 · good 27.70 · good Poor
Fri 04:00 0.40 · high 1.25 · good 27.70 · good Poor
Fri 05:00 0.38 · high 1.03 · good 27.70 · good Poor
Fri 06:00 0.38 · high 1.25 · good 27.60 · good Good
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