SnorkelForecast.com

Mnemba Atoll Snorkel Report Today

Tanzania · Updated Tue 20:32 (EAT) · Source: Snapshot

The skinny

Marginal Report Wed 02:23

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

Score: 3.0/10

Best time: Fri 18:00

Main risk: Waves

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

Best afternoon signal: Wed 13:00 (Poor). Peak afternoon wind is about 5.2 m/s.

Email me when it is good

Sunrise

06:22

Sunset

18:22

Water

26.0°C

Max air

27.2°C

Sky

Partly cloudy

41% 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

Wednesday

❌ Poor conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Fri 15:00: Fair (0.39) · still limited by waves, tide/current
  • Thu 08:00: Fair (0.38) · still limited by waves, tide/current
  • Fri 14:00: Fair (0.37) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Tide/current (68 hours)
  • Darkness (32 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 03:00

Wed 03:00, Wed 16:00, Thu 04:00, Thu 16:00, Fri 05:00, Fri 17:00

Nearby alternatives in Tanzania

Mafia Island

238 km away

❌ Poor

Advanced forecast data

Viewing current forecast

Tue 23:00 – Fri 23:00 (EAT)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.3 around Wed 07:00; 0 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 1.46m to 1.54m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.77 to 5.2m/s).

Tides range from -0.95m to 1.99m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Wed 00:00 1.46 · high 2.77 · good 26.00 · good Poor
Wed 01:00 1.48 · high 3.24 · good 26.00 · good Poor
Wed 02:00 1.48 · high 3.21 · good 26.00 · good Poor
Wed 03:00 1.50 · high 2.92 · good 26.00 · good Poor
Wed 04:00 1.52 · high 3.26 · good 26.00 · good Poor
Wed 05:00 1.52 · high 3.62 · good 26.00 · good Poor
Wed 06:00 1.54 · high 4.23 · good 26.00 · good Poor
Wed 07:00 1.54 · high 4.19 · good 26.00 · good Poor
Wed 08:00 1.54 · high 4.57 · good 26.10 · good Poor
Wed 09:00 1.54 · high 4.26 · good 26.10 · good Poor
Wed 10:00 1.54 · high 3.98 · good 26.20 · good Poor
Wed 11:00 1.54 · high 4.34 · good 26.30 · good Poor
Wed 12:00 1.54 · high 4.77 · good 26.30 · good Poor
Wed 13:00 1.54 · high 4.83 · good 26.30 · good Poor
Wed 14:00 1.54 · high 5.20 · good 26.20 · good Poor
Wed 15:00 1.54 · high 5.20 · good 26.20 · good Poor
Wed 16:00 1.52 · high 4.71 · good 26.10 · good Poor
Wed 17:00 1.52 · high 4.57 · good 26.10 · good Poor
Wed 18:00 1.50 · high 4.47 · good 26.10 · good Poor
Wed 19:00 1.50 · high 4.70 · good 26.10 · good Poor
Wed 20:00 1.48 · high 4.76 · good 26.00 · good Poor
Wed 21:00 1.48 · high 4.38 · good 26.00 · good Poor
Wed 22:00 1.48 · high 4.29 · good 26.00 · good Poor
Wed 23:00 1.46 · high 3.98 · good 26.00 · good Poor
Thu 00:00 1.46 · high 3.78 · good 26.00 · good Poor
Thu 01:00 1.46 · high 3.47 · good 26.00 · good Poor
Thu 02:00 1.48 · high 3.75 · good 26.00 · good Poor
Thu 03:00 1.48 · high 3.60 · good 26.00 · good Poor
Thu 04:00 1.48 · high 3.56 · good 26.00 · good Poor
Thu 05:00 1.46 · high 3.88 · good 26.00 · good Poor
Thu 06:00 1.46 · high 3.75 · good 26.00 · good Poor
Thu 07:00 1.44 · high 3.55 · good 26.10 · good Fair
Thu 08:00 1.44 · high 3.41 · good 26.10 · good Fair
Thu 09:00 1.42 · high 3.78 · good 26.20 · good Fair
Thu 10:00 1.42 · high 3.86 · good 26.30 · good Fair
Thu 11:00 1.40 · high 4.57 · good 26.30 · good Fair
Thu 12:00 1.40 · high 5.17 · good 26.30 · good Poor
Thu 13:00 1.40 · high 5.74 · high 26.30 · good Poor
Thu 14:00 1.42 · high 5.95 · high 26.30 · good Poor
Thu 15:00 1.42 · high 5.39 · good 26.30 · good Fair
Thu 16:00 1.42 · high 4.81 · good 26.20 · good Poor
Thu 17:00 1.42 · high 4.60 · good 26.20 · good Poor
Thu 18:00 1.42 · high 4.41 · good 26.10 · good Poor
Thu 19:00 1.42 · high 4.24 · good 26.10 · good Poor
Thu 20:00 1.40 · high 4.01 · good 26.10 · good Poor
Thu 21:00 1.40 · high 3.51 · good 26.10 · good Poor
Thu 22:00 1.38 · high 3.05 · good 26.00 · good Poor
Thu 23:00 1.36 · high 2.86 · good 26.00 · good Poor
Fri 00:00 1.34 · high 2.94 · good 26.00 · good Poor
Fri 01:00 1.32 · high 3.08 · good 26.00 · good Poor
Fri 02:00 1.32 · high 3.04 · good 26.00 · good Poor
Fri 03:00 1.30 · high 2.90 · good 26.00 · good Poor
Fri 04:00 1.30 · high 3.16 · good 26.00 · good Poor
Fri 05:00 1.28 · high 3.77 · good 26.00 · good Poor
Fri 06:00 1.28 · high 3.86 · good 26.10 · good Poor
Fri 07:00 1.28 · high 3.90 · good 26.20 · good Poor
Fri 08:00 1.26 · high 4.38 · good 26.30 · good Poor
Fri 09:00 1.26 · high 4.73 · good 26.40 · good Fair
Fri 10:00 1.26 · high 4.68 · good 26.50 · good Fair
Fri 11:00 1.28 · high 4.99 · good 26.60 · good Fair
Fri 12:00 1.28 · high 5.60 · high 26.70 · good Poor
Fri 13:00 1.30 · high 5.94 · high 26.70 · good Fair
Fri 14:00 1.30 · high 5.55 · high 26.60 · good Fair
Fri 15:00 1.32 · high 4.55 · good 26.50 · good Fair
Fri 16:00 1.34 · high 4.12 · good 26.40 · good Poor
Fri 17:00 1.36 · high 3.98 · good 26.30 · good Poor
Fri 18:00 1.38 · high 4.00 · good 26.30 · good Poor
Fri 19:00 1.40 · high 4.12 · good 26.20 · good Poor