Sunday
❌ poor conditions
Main blocker: Waves
Nosy Be Snorkel Report Today
Madagascar · Updated Sat 05:04 (EAT) · Source: Snapshot · Showing fallback/stale data
The skinny
Go in the best window Report Sun 17:41Nosy Be has a usable snorkeling window around Mon 07:00. The main thing to watch is darkness.
Score: 7.4/10
Best time: Mon 07:00
Main risk: Darkness
No useful morning window is showing yet.
No useful afternoon window is showing yet.
Good window is available today
Next safe window: Mon 04:00–14:00 (32% of next 72h are suitable)
3-day planner
Monday
✅ excellent conditions
Main blocker: Darkness
Tuesday
✅ good conditions
Main blocker: Darkness
Best available hours
Next safe window starts at Mon 04:00 until 14:00.
Why this verdict
Main blockers across the next 72 hours:
- Darkness (26 hours)
- Waves (17 hours)
Jellyfish drift risk
Drift estimate from wind, swell, current and warm water.
Low drift risk now.
warm water supports seasonal jellyfish activity; 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: Mon 05:00
Sun 16:00, Mon 05:00, Mon 17:00
Nearby alternatives in Madagascar
No nearby alternatives available.
Advanced forecast data
Viewing historical data
Thu 14:00 – Sun 14:00 (EAT)
Snorkel Score (selected 24h)
Best snorkel score is 0.62 around Fri 07:00; 11 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.
0/24 sampled hours stay at or below 0.36m (range 0.56m to 0.72m).
Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.35 to 4.17m/s).
Tides range from -1.15m to 2.39m; 1 of 24 hours are in or near peak slack windows.
72-hour historical overview
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
poor
❌ Limited
good
🌟 Good
good
🌟 Good
good
🌟 Good
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
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
poor
❌ Limited
good
🌟 Good
good
🌟 Good
good
🌟 Good
good
🌟 Good
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
fair
⚠️ Fair
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
poor
❌ Limited
good
🌟 Good
excellent
✅ Excellent
good
🌟 Good
good
🌟 Good
good
🌟 Good
good
🌟 Good
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 and safety gate (outside daylight scores lower).
Detailed hourly data table
| Time | Wave (m) | Wind (m/s) | Sea temp (°C) | Status |
|---|---|---|---|---|
| Thu 14:00 | 0.66 · high | 3.36 · good | 27.90 · good | good |
| Thu 15:00 | 0.70 · high | 3.04 · good | 27.90 · good | poor |
| Thu 16:00 | 0.70 · high | 2.47 · good | 27.90 · good | poor |
| Thu 17:00 | 0.72 · high | 1.83 · good | 27.80 · good | poor |
| Thu 18:00 | 0.72 · high | 1.53 · good | 27.80 · good | poor |
| Thu 19:00 | 0.72 · high | 1.23 · good | 27.80 · good | poor |
| Thu 20:00 | 0.70 · high | 0.35 · good | 27.80 · good | poor |
| Thu 21:00 | 0.70 · high | 0.59 · good | 27.80 · good | poor |
| Thu 22:00 | 0.68 · high | 0.76 · good | 27.80 · good | poor |
| Thu 23:00 | 0.68 · high | 1.18 · good | 27.70 · good | poor |
| Fri 00:00 | 0.66 · high | 1.33 · good | 27.70 · good | poor |
| Fri 01:00 | 0.64 · high | 1.35 · good | 27.70 · good | poor |
| Fri 02:00 | 0.64 · high | 1.07 · good | 27.70 · good | poor |
| Fri 03:00 | 0.62 · high | 0.93 · good | 27.70 · good | poor |
| Fri 04:00 | 0.60 · high | 1.70 · good | 27.70 · good | good |
| Fri 05:00 | 0.60 · high | 1.47 · good | 27.70 · good | good |
| Fri 06:00 | 0.58 · high | 1.10 · good | 27.70 · good | good |
| Fri 07:00 | 0.58 · high | 1.01 · good | 27.70 · good | fair |
| Fri 08:00 | 0.56 · high | 0.86 · good | 27.80 · good | fair |
| Fri 09:00 | 0.56 · high | 0.70 · good | 27.80 · good | fair |
| Fri 10:00 | 0.56 · high | 1.35 · good | 27.90 · good | fair |
| Fri 11:00 | 0.56 · high | 2.30 · good | 27.90 · good | fair |
| Fri 12:00 | 0.56 · high | 3.56 · good | 28.00 · good | fair |
| Fri 13:00 | 0.56 · high | 4.17 · good | 28.00 · good | fair |
| Fri 14:00 | 0.58 · high | 3.95 · good | 28.00 · good | good |
| Fri 15:00 | 0.58 · high | 3.53 · good | 28.00 · good | poor |
| Fri 16:00 | 0.58 · high | 2.17 · good | 27.90 · good | poor |
| Fri 17:00 | 0.58 · high | 1.40 · good | 27.90 · good | poor |
| Fri 18:00 | 0.58 · high | 0.98 · good | 27.90 · good | poor |
| Fri 19:00 | 0.58 · high | 1.01 · good | 27.90 · good | poor |
| Fri 20:00 | 0.56 · high | 0.74 · good | 27.80 · good | poor |
| Fri 21:00 | 0.56 · high | 1.04 · good | 27.80 · good | poor |
| Fri 22:00 | 0.56 · high | 1.94 · good | 27.80 · good | poor |
| Fri 23:00 | 0.56 · high | 0.99 · good | 27.80 · good | poor |
| Sat 00:00 | 0.56 · high | 0.36 · good | 27.80 · good | poor |
| Sat 01:00 | 0.56 · high | 0.57 · good | 27.80 · good | poor |
| Sat 02:00 | 0.56 · high | 0.78 · good | 27.70 · good | poor |
| Sat 03:00 | 0.56 · high | 0.00 · good | 27.70 · good | poor |
| Sat 04:00 | 0.56 · high | 0.51 · good | 27.70 · good | good |
| Sat 05:00 | 0.54 · high | 1.03 · good | 27.70 · good | good |
| Sat 06:00 | 0.62 · high | 0.36 · good | 27.50 · good | good |
| Sat 07:00 | 0.60 · high | 0.51 · good | 27.60 · good | good |
| Sat 08:00 | 0.60 · high | 0.85 · good | 27.60 · good | fair |
| Sat 09:00 | 0.58 · high | 1.64 · good | 27.70 · good | fair |
| Sat 10:00 | 0.56 · high | 2.31 · good | 27.80 · good | fair |
| Sat 11:00 | 0.54 · high | 3.85 · good | 27.80 · good | fair |
| Sat 12:00 | 0.52 · high | 4.16 · good | 27.90 · good | fair |
| Sat 13:00 | 0.54 · high | 4.46 · good | 27.90 · good | fair |
| Sat 14:00 | 0.54 · high | 4.77 · good | 27.90 · good | good |
| Sat 15:00 | 0.56 · high | 4.05 · good | 27.80 · good | poor |
| Sat 16:00 | 0.56 · high | 3.84 · good | 27.80 · good | poor |
| Sat 17:00 | 0.56 · high | 2.74 · good | 27.80 · good | poor |
| Sat 18:00 | 0.56 · high | 1.86 · good | 27.70 · good | poor |
| Sat 19:00 | 0.54 · high | 0.91 · good | 27.70 · good | poor |
| Sat 20:00 | 0.50 · high | 2.70 · good | 27.70 · good | poor |
| Sat 21:00 | 0.48 · high | 2.15 · good | 27.60 · good | poor |
| Sat 22:00 | 0.48 · high | 2.50 · good | 27.60 · good | poor |
| Sat 23:00 | 0.46 · high | 1.64 · good | 27.60 · good | poor |
| Sun 00:00 | 0.46 · high | 1.36 · good | 27.60 · good | poor |
| Sun 01:00 | 0.46 · high | 0.40 · good | 27.60 · good | poor |
| Sun 02:00 | 0.46 · high | 0.29 · good | 27.60 · good | poor |
| Sun 03:00 | 0.46 · high | 0.22 · good | 27.50 · good | poor |
| Sun 04:00 | 0.46 · high | 0.85 · good | 27.50 · good | good |
| Sun 05:00 | 0.46 · high | 0.18 · good | 27.60 · good | excellent |
| Sun 06:00 | 0.46 · high | 0.59 · good | 27.60 · good | good |
| Sun 07:00 | 0.46 · high | 0.65 · good | 27.60 · good | good |
| Sun 08:00 | 0.46 · high | 1.11 · good | 27.70 · good | good |
| Sun 09:00 | 0.46 · high | 1.77 · good | 27.70 · good | good |
| Sun 10:00 | 0.46 · high | 2.28 · good | 27.80 · good | good |
| Sun 11:00 | 0.44 · high | 3.18 · good | 27.80 · good | good |
| Sun 12:00 | 0.44 · high | 3.99 · good | 27.90 · good | good |
| Sun 13:00 | 0.46 · high | 4.46 · good | 27.90 · good | good |