SnorkelForecast.com

Mnemba Atoll Snorkel Report Today

Tanzania · Updated Tue 03:13 (EAT) · Source: Snapshot

The skinny

Marginal Report Wed 02:00

Mnemba Atoll looks marginal today. The least-bad daylight window is around Wed 07:00, but waves is limiting the forecast.

Score: 4.4/10

Best time: Wed 07:00

Main risk: Waves

Best morning signal: Wed 07:00 (Fair).

Best afternoon signal: Wed 18:00 (Fair). Peak afternoon wind is about 5.2 m/s.

Email me when it is good

Sunrise

06:34

Sunset

18:23

Water

25.7°C

Max air

26.4°C

Sky

Partly cloudy

31% 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

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

⚠️ fair conditions

Main blocker: Waves

Friday

❌ poor conditions

Main blocker: Waves

Best available hours

  • Wed 04:00 — Fair (0.44) · still limited by waves, tide/current
  • Thu 15:00 — Fair (0.44) · still limited by waves, tide/current
  • Wed 15:00 — Fair (0.42) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (51 hours)
  • Tide/current (51 hours)
  • Darkness (27 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

Wed 06:00, Wed 18:00, Thu 07:00, Thu 20:00

Nearby alternatives in Tanzania

Mafia Island

238 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sat 23:00 – Tue 23:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.41 around Sun 11:00; 6 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 0.68m to 0.94m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.72 to 5.2m/s).

Tides range from -0.81m to 1.78m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
Sat 23:00 0.94 · high 2.61 · good 26.40 · good poor
Sun 00:00 0.92 · high 2.17 · good 26.40 · good poor
Sun 01:00 0.90 · high 2.19 · good 26.40 · good poor
Sun 02:00 0.90 · high 2.45 · good 26.40 · good poor
Sun 03:00 0.88 · high 2.15 · good 26.40 · good poor
Sun 04:00 0.86 · high 1.72 · good 26.40 · good poor
Sun 05:00 0.86 · high 1.93 · good 26.40 · good poor
Sun 06:00 0.84 · high 2.20 · good 26.40 · good poor
Sun 07:00 0.70 · high 2.64 · good 26.10 · good fair
Sun 08:00 0.68 · high 2.72 · good 26.20 · good fair
Sun 09:00 0.68 · high 3.10 · good 26.20 · good poor
Sun 10:00 0.68 · high 3.63 · good 26.30 · good poor
Sun 11:00 0.70 · high 4.16 · good 26.40 · good poor
Sun 12:00 0.70 · high 4.45 · good 26.40 · good fair
Sun 13:00 0.72 · high 5.20 · good 26.40 · good fair
Sun 14:00 0.72 · high 5.19 · good 26.30 · good fair
Sun 15:00 0.74 · high 4.35 · good 26.30 · good fair
Sun 16:00 0.76 · high 4.15 · good 26.20 · good poor
Sun 17:00 0.76 · high 4.36 · good 26.20 · good poor
Sun 18:00 0.78 · high 4.21 · good 26.20 · good poor
Sun 19:00 0.78 · high 3.87 · good 26.20 · good poor
Sun 20:00 0.80 · high 3.92 · good 26.10 · good poor
Sun 21:00 0.80 · high 3.20 · good 26.10 · good poor
Sun 22:00 0.80 · high 3.13 · good 26.10 · good poor
Sun 23:00 0.80 · high 2.47 · good 26.10 · good poor
Mon 00:00 0.80 · high 2.55 · good 26.10 · good poor
Mon 01:00 0.78 · high 2.53 · good 26.10 · good poor
Mon 02:00 0.78 · high 2.24 · good 26.10 · good poor
Mon 03:00 0.76 · high 2.01 · good 26.10 · good poor
Mon 04:00 0.76 · high 2.35 · good 26.10 · good fair
Mon 05:00 0.76 · high 2.96 · good 26.10 · good fair
Mon 06:00 0.76 · high 3.36 · good 26.10 · good fair
Mon 07:00 0.78 · high 3.80 · good 26.20 · good fair
Mon 08:00 0.78 · high 3.92 · good 26.20 · good fair
Mon 09:00 0.80 · high 4.00 · good 26.30 · good fair
Mon 10:00 0.82 · high 4.35 · good 26.40 · good fair
Mon 11:00 0.82 · high 4.65 · good 26.40 · good fair
Mon 12:00 0.84 · high 4.26 · good 26.40 · good fair
Mon 13:00 0.84 · high 4.29 · good 26.40 · good fair
Mon 14:00 0.84 · high 4.20 · good 26.40 · good fair
Mon 15:00 0.84 · high 3.53 · good 26.30 · good fair
Mon 16:00 0.84 · high 3.89 · good 26.30 · good poor
Mon 17:00 0.86 · high 4.54 · good 26.30 · good poor
Mon 18:00 0.86 · high 5.13 · good 26.20 · good poor
Mon 19:00 0.86 · high 4.84 · good 26.20 · good poor
Mon 20:00 0.88 · high 4.56 · good 26.20 · good poor
Mon 21:00 0.88 · high 4.66 · good 26.20 · good poor
Mon 22:00 0.88 · high 4.58 · good 26.20 · good poor
Mon 23:00 0.90 · high 4.63 · good 26.20 · good poor
Tue 00:00 0.90 · high 4.74 · good 26.20 · good poor
Tue 01:00 0.92 · high 4.24 · good 26.20 · good poor
Tue 02:00 0.92 · high 4.51 · good 26.20 · good poor
Tue 03:00 0.94 · high 4.08 · good 26.20 · good poor
Tue 04:00 0.94 · high 3.68 · good 26.20 · good fair
Tue 05:00 0.96 · high 3.75 · good 26.20 · good fair
Tue 06:00 0.96 · high 4.28 · good 26.20 · good fair
Tue 07:00 0.96 · high 4.66 · good 26.20 · good fair
Tue 08:00 0.98 · high 5.06 · good 26.30 · good poor
Tue 09:00 0.98 · high 5.35 · good 26.30 · good poor
Tue 10:00 1.00 · high 5.37 · good 26.30 · good poor
Tue 11:00 1.04 · high 5.22 · good 26.40 · good fair
Tue 12:00 1.06 · high 5.69 · high 26.40 · good fair
Tue 13:00 1.08 · high 5.84 · high 26.40 · good fair
Tue 14:00 1.08 · high 5.66 · high 26.40 · good fair
Tue 15:00 1.10 · high 4.94 · good 26.30 · good fair
Tue 16:00 1.10 · high 4.81 · good 26.30 · good poor
Tue 17:00 1.08 · high 4.93 · good 26.30 · good poor
Tue 18:00 1.08 · high 4.90 · good 26.30 · good poor
Tue 19:00 1.06 · high 4.73 · good 26.30 · good poor
Tue 20:00 1.04 · high 4.87 · good 26.30 · good poor
Tue 21:00 1.02 · high 4.62 · good 26.20 · good poor
Tue 22:00 1.00 · high 4.46 · good 26.20 · good poor