SnorkelForecast.com

Mnemba Atoll Snorkel Report Today

Tanzania · Updated Sat 04:01 (EAT) · Source: Snapshot · Showing fallback/stale data

The skinny

Marginal Report Sun 09:26

Mnemba Atoll looks marginal today. The least-bad daylight window is around Mon 09:00, but waves is limiting the forecast.

Score: 4.6/10

Best time: Mon 09:00

Main risk: Waves

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

Best afternoon signal: Sun 12:00 (Fair). Peak afternoon wind is about 4.7 m/s.

Email me when it is good

Sunrise

06:34

Sunset

18:23

Water

25.1°C

Max air

26.0°C

Sky

Partly cloudy

47% cloud

No safe 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

❌ poor conditions

Main blocker: Waves

Best available hours

  • Mon 06:00 — Fair (0.46) · still limited by waves, tide/current
  • Mon 05:00 — Fair (0.46) · still limited by waves, tide/current
  • Mon 15:00 — Fair (0.43) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (45 hours)
  • Tide/current (45 hours)
  • Darkness (24 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: Mon 05:00

Sun 16:00, Mon 05:00, Mon 17:00

Nearby alternatives in Tanzania

Mafia Island

238 km away

❌ Poor

Advanced forecast data

Viewing historical data

Fri 06:00 – Mon 06:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.39 around Sat 07:00; 1 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 0.78m to 1.04m).

Wind is at or below 5.4m/s in 15/24 sampled hours (range 3.25 to 6.7m/s).

Tides range from -1.22m to 2.23m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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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
Fri 06:00 0.96 · high 4.41 · good 26.20 · good poor
Fri 07:00 0.96 · high 5.00 · good 26.30 · good poor
Fri 08:00 0.94 · high 5.31 · good 26.30 · good poor
Fri 09:00 0.94 · high 5.87 · high 26.30 · good poor
Fri 10:00 0.96 · high 6.28 · high 26.40 · good poor
Fri 11:00 0.96 · high 6.70 · high 26.40 · good poor
Fri 12:00 0.98 · high 6.65 · high 26.40 · good poor
Fri 13:00 1.00 · high 6.15 · high 26.40 · good poor
Fri 14:00 1.02 · high 5.99 · high 26.40 · good poor
Fri 15:00 1.04 · high 6.04 · high 26.40 · good poor
Fri 16:00 1.04 · high 5.77 · high 26.30 · good poor
Fri 17:00 1.02 · high 5.48 · high 26.30 · good poor
Fri 18:00 1.02 · high 4.92 · good 26.30 · good poor
Fri 19:00 1.00 · high 4.56 · good 26.30 · good poor
Fri 20:00 0.96 · high 4.56 · good 26.20 · good poor
Fri 21:00 0.94 · high 4.43 · good 26.20 · good poor
Fri 22:00 0.94 · high 4.03 · good 26.20 · good poor
Fri 23:00 0.92 · high 3.78 · good 26.20 · good poor
Sat 00:00 0.92 · high 3.98 · good 26.20 · good poor
Sat 01:00 0.92 · high 3.85 · good 26.20 · good poor
Sat 02:00 0.94 · high 3.32 · good 26.20 · good poor
Sat 03:00 0.94 · high 3.25 · good 26.20 · good poor
Sat 04:00 0.94 · high 3.53 · good 26.20 · good fair
Sat 05:00 0.78 · high 3.85 · good 24.80 · good poor
Sat 06:00 0.76 · high 4.25 · good 24.90 · good poor
Sat 07:00 0.76 · high 4.36 · good 24.90 · good poor
Sat 08:00 0.74 · high 4.31 · good 25.00 · good poor
Sat 09:00 0.74 · high 4.16 · good 25.10 · good poor
Sat 10:00 0.74 · high 4.60 · good 25.20 · good poor
Sat 11:00 0.72 · high 4.68 · good 25.20 · good poor
Sat 12:00 0.72 · high 4.33 · good 25.30 · good poor
Sat 13:00 0.76 · high 4.53 · good 25.30 · good poor
Sat 14:00 0.80 · high 5.52 · high 25.20 · good poor
Sat 15:00 0.84 · high 4.95 · good 25.20 · good poor
Sat 16:00 0.90 · high 5.25 · good 25.10 · good poor
Sat 17:00 0.98 · high 5.49 · high 25.10 · good poor
Sat 18:00 1.04 · high 5.14 · good 25.00 · good poor
Sat 19:00 1.04 · high 4.52 · good 25.00 · good poor
Sat 20:00 1.02 · high 4.47 · good 25.00 · good poor
Sat 21:00 1.02 · high 4.31 · good 25.00 · good poor
Sat 22:00 1.00 · high 4.50 · good 25.00 · good poor
Sat 23:00 0.96 · high 4.43 · good 25.00 · good poor
Sun 00:00 0.94 · high 4.30 · good 25.00 · good poor
Sun 01:00 0.92 · high 4.05 · good 25.00 · good poor
Sun 02:00 0.88 · high 3.54 · good 25.00 · good poor
Sun 03:00 0.86 · high 2.85 · good 25.00 · good poor
Sun 04:00 0.84 · high 2.18 · good 25.00 · good fair
Sun 05:00 0.82 · high 2.61 · good 25.00 · good fair
Sun 06:00 0.80 · high 3.55 · good 25.10 · good poor
Sun 07:00 0.78 · high 3.06 · good 25.10 · good fair
Sun 08:00 0.78 · high 3.05 · good 25.20 · good poor
Sun 09:00 0.76 · high 2.95 · good 25.30 · good fair
Sun 10:00 0.74 · high 3.31 · good 25.40 · good fair
Sun 11:00 0.74 · high 3.62 · good 25.50 · good poor
Sun 12:00 0.72 · high 3.57 · good 25.50 · good fair
Sun 13:00 0.72 · high 3.86 · good 25.50 · good fair
Sun 14:00 0.72 · high 4.66 · good 25.50 · good poor
Sun 15:00 0.72 · high 4.32 · good 25.40 · good poor
Sun 16:00 0.74 · high 4.10 · good 25.40 · good poor
Sun 17:00 0.74 · high 4.15 · good 25.30 · good poor
Sun 18:00 0.76 · high 4.49 · good 25.30 · good poor
Sun 19:00 0.76 · high 4.17 · good 25.30 · good poor
Sun 20:00 0.74 · high 3.89 · good 25.30 · good poor
Sun 21:00 0.74 · high 3.30 · good 25.30 · good poor
Sun 22:00 0.72 · high 2.78 · good 25.30 · good poor
Sun 23:00 0.72 · high 2.28 · good 25.30 · good poor
Mon 00:00 0.70 · high 1.66 · good 25.30 · good poor
Mon 01:00 0.68 · high 1.37 · good 25.30 · good poor
Mon 02:00 0.68 · high 1.44 · good 25.30 · good poor
Mon 03:00 0.66 · high 1.94 · good 25.30 · good poor
Mon 04:00 0.66 · high 2.46 · good 25.30 · good fair
Mon 05:00 0.66 · high 2.51 · good 25.30 · good fair