MARINE REPORT / 72 HOURS

Mnemba Atoll Snorkel Report Today

Tanzania · Updated Sun 11:55 (EAT) · Source: Snapshot

The skinny

Marginal Data updated Sun 11:55 (EAT)

Mnemba Atoll looks marginal today. The least-bad daylight window is around Sun 18:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 3.4/10

Sun 13:00 (EAT)

Later today

Fair · 3.9/10

Sun 18:00 (EAT)

Next three days

Fair · 4.8/10

Tue 06:00 (EAT)

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

Score: 3.9/10

Best time: Sun 18:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Sun 18:00 (Fair). Peak afternoon wind is about 5.8 m/s.

Email me when it is good

Sunrise

06:00

Sunset

18:15

Water

27.3°C

Max air

28.5°C

Sky

Cloudy

81% cloud

No good model window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Tuesday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Tue 06:00: Fair (0.48) · still limited by waves, tide/current
  • Wed 06:00: Fair (0.46) · still limited by waves, tide/current
  • Wed 08:00: Fair (0.46) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (69 hours)
  • Darkness (33 hours)

Jellyfish drift risk

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

Low · 34/100

Low drift risk now.

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 23:00, Tue 11:00, Wed 00:00

Nearby alternatives in Tanzania

Mafia Island

238 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Fri 13:00 – Mon 13:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.39 around Sat 12:00; 3 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 1.76m to 1.94m).

Wind is at or below 5.4m/s in 14/24 sampled hours (range 3.06 to 6.73m/s).

Tides range from -0.21m to 1.04m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
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 13:00 1.94 · high 4.45 · good 26.70 · good Fair
Fri 14:00 1.90 · high 4.36 · good 26.70 · good Poor
Fri 15:00 1.90 · high 6.65 · high 26.70 · good Poor
Fri 16:00 1.90 · high 6.55 · high 26.70 · good Poor
Fri 17:00 1.92 · high 6.65 · high 26.70 · good Poor
Fri 18:00 1.92 · high 6.40 · high 26.60 · good Poor
Fri 19:00 1.92 · high 6.73 · high 26.60 · good Poor
Fri 20:00 1.92 · high 6.51 · high 26.50 · good Poor
Fri 21:00 1.92 · high 6.36 · high 26.50 · good Poor
Fri 22:00 1.90 · high 5.94 · high 26.40 · good Poor
Fri 23:00 1.90 · high 5.80 · high 26.40 · good Poor
Sat 00:00 1.88 · high 5.63 · high 26.40 · good Poor
Sat 01:00 1.86 · high 5.23 · good 26.40 · good Poor
Sat 02:00 1.84 · high 5.11 · good 26.40 · good Poor
Sat 03:00 1.88 · high 5.07 · good 26.40 · good Poor
Sat 04:00 1.86 · high 4.70 · good 26.40 · good Poor
Sat 05:00 1.86 · high 4.52 · good 26.40 · good Poor
Sat 06:00 1.84 · high 4.19 · good 26.40 · good Poor
Sat 07:00 1.82 · high 4.47 · good 26.30 · good Poor
Sat 08:00 1.82 · high 4.67 · good 26.40 · good Fair
Sat 09:00 1.80 · high 3.06 · good 26.40 · good Poor
Sat 10:00 1.78 · high 4.24 · good 26.40 · good Poor
Sat 11:00 1.78 · high 5.09 · good 26.50 · good Poor
Sat 12:00 1.76 · high 3.79 · good 26.50 · good Fair
Sat 13:00 1.74 · high 4.50 · good 26.60 · good Fair
Sat 14:00 1.74 · high 5.84 · high 26.70 · good Poor
Sat 15:00 1.68 · high 6.44 · high 26.70 · good Poor
Sat 16:00 1.70 · high 6.65 · high 26.70 · good Poor
Sat 17:00 1.72 · high 6.90 · high 26.60 · good Poor
Sat 18:00 1.74 · high 6.47 · high 26.60 · good Poor
Sat 19:00 1.76 · high 6.65 · high 26.50 · good Poor
Sat 20:00 1.78 · high 6.39 · high 26.50 · good Poor
Sat 21:00 1.74 · high 5.31 · good 26.50 · good Poor
Sat 22:00 1.76 · high 4.96 · good 26.50 · good Poor
Sat 23:00 1.76 · high 4.81 · good 26.40 · good Poor
Sun 00:00 1.78 · high 4.81 · good 26.40 · good Poor
Sun 01:00 1.78 · high 4.91 · good 26.40 · good Poor
Sun 02:00 1.80 · high 4.90 · good 26.40 · good Poor
Sun 03:00 1.80 · high 4.83 · good 26.40 · good Poor
Sun 04:00 1.80 · high 4.52 · good 26.40 · good Poor
Sun 05:00 1.80 · high 4.13 · good 26.40 · good Poor
Sun 06:00 1.80 · high 3.70 · good 26.40 · good Poor
Sun 07:00 1.80 · high 4.05 · good 26.40 · good Fair
Sun 08:00 1.80 · high 4.46 · good 26.40 · good Poor
Sun 09:00 1.80 · high 5.01 · good 26.40 · good Fair
Sun 10:00 1.80 · high 5.55 · high 26.40 · good Poor
Sun 11:00 1.78 · high 5.91 · high 26.50 · good Poor
Sun 12:00 1.78 · high 5.96 · high 26.50 · good Poor
Sun 13:00 1.78 · high 6.15 · high 26.50 · good Poor
Sun 14:00 1.78 · high 6.49 · high 26.50 · good Poor
Sun 15:00 1.78 · high 6.72 · high 26.50 · good Poor
Sun 16:00 1.78 · high 7.11 · high 26.50 · good Poor
Sun 17:00 1.78 · high 6.86 · high 26.50 · good Poor
Sun 18:00 1.76 · high 6.80 · high 26.50 · good Poor
Sun 19:00 1.76 · high 6.47 · high 26.40 · good Poor
Sun 20:00 1.74 · high 6.17 · high 26.40 · good Poor
Sun 21:00 1.74 · high 6.08 · high 26.40 · good Poor
Sun 22:00 1.72 · high 5.58 · high 26.40 · good Poor
Sun 23:00 1.70 · high 5.40 · good 26.40 · good Poor
Mon 00:00 1.68 · high 5.13 · good 26.40 · good Poor
Mon 01:00 1.66 · high 5.23 · good 26.40 · good Poor
Mon 02:00 1.66 · high 4.92 · good 26.40 · good Poor
Mon 03:00 1.64 · high 5.46 · high 26.40 · good Poor
Mon 04:00 1.62 · high 5.34 · good 26.40 · good Poor
Mon 05:00 1.60 · high 5.10 · good 26.40 · good Poor
Mon 06:00 1.58 · high 5.12 · good 26.40 · good Poor
Mon 07:00 1.58 · high 5.44 · high 26.40 · good Poor
Mon 08:00 1.60 · high 5.58 · high 26.40 · good Poor
Mon 09:00 1.60 · high 5.87 · high 26.40 · good Fair
Mon 10:00 1.62 · high 6.50 · high 26.40 · good Poor
Mon 11:00 1.64 · high 6.46 · high 26.50 · good Fair
Mon 12:00 1.66 · high 6.34 · high 26.50 · good Fair