MARINE REPORT / 72 HOURS

Mafia Island Snorkel Report Today

Tanzania · Updated Sat 13:12 (EAT) · Source: Snapshot

The skinny

Marginal Data updated Sat 13:12 (EAT)

Mafia Island looks marginal today. The least-bad daylight window is around Sat 15:00, but waves is limiting the forecast.

Right now (forecast)

Fair · 3.8/10

Sat 14:00 (EAT)

Later today

Poor · 3.5/10

Sat 15:00 (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: 3.5/10

Best time: Sat 15:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Sat 15:00 (Poor). Peak afternoon wind is about 6.5 m/s.

Email me when it is good

Sunrise

05:57

Sunset

18:15

Water

27.0°C

Max air

28.9°C

Sky

Partly cloudy

38% 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

Saturday

❌ Poor conditions

Main blocker: Waves

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Tue 06:00: Fair (0.48) · still limited by waves, tide/current
  • Tue 07:00: Fair (0.47) · still limited by waves, tide/current
  • Sun 06:00: Fair (0.45) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (70 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: Sun 07:00

Sat 19:00, Sun 07:00, Sun 20:00, Mon 09:00, Mon 23:00, Tue 11:00

Nearby alternatives in Tanzania

Mnemba Atoll

238 km away

❌ Poor

Advanced forecast data

Viewing historical data

Tue 14:00 – Fri 14:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.4 around Wed 10:00; 5 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 1.24m to 1.36m).

Wind is at or below 5.4m/s in 14/24 sampled hours (range 4.43 to 6.96m/s).

Tides range from -0.42m to 1.62m; 1 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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Tue 14:00 1.30 · high 6.49 · high 27.30 · good Poor
Tue 15:00 1.30 · high 6.72 · high 27.30 · good Poor
Tue 16:00 1.30 · high 6.67 · high 27.30 · good Poor
Tue 17:00 1.30 · high 6.90 · high 27.30 · good Poor
Tue 18:00 1.30 · high 6.96 · high 27.20 · good Poor
Tue 19:00 1.30 · high 5.74 · high 27.20 · good Poor
Tue 20:00 1.32 · high 5.36 · good 27.20 · good Poor
Tue 21:00 1.32 · high 5.68 · high 27.20 · good Poor
Tue 22:00 1.32 · high 5.45 · high 27.20 · good Poor
Tue 23:00 1.34 · high 5.38 · good 27.20 · good Poor
Wed 00:00 1.34 · high 5.12 · good 27.10 · good Poor
Wed 01:00 1.34 · high 4.89 · good 27.10 · good Poor
Wed 02:00 1.34 · high 4.51 · good 27.10 · good Poor
Wed 03:00 1.34 · high 4.43 · good 27.10 · good Poor
Wed 04:00 1.34 · high 4.49 · good 27.10 · good Poor
Wed 05:00 1.36 · high 4.71 · good 27.10 · good Poor
Wed 06:00 1.36 · high 4.70 · good 27.10 · good Poor
Wed 07:00 1.34 · high 5.01 · good 27.10 · good Fair
Wed 08:00 1.34 · high 5.33 · good 27.10 · good Fair
Wed 09:00 1.32 · high 5.92 · high 27.10 · good Fair
Wed 10:00 1.30 · high 5.51 · high 27.10 · good Fair
Wed 11:00 1.28 · high 4.94 · good 27.20 · good Fair
Wed 12:00 1.26 · high 5.09 · good 27.20 · good Poor
Wed 13:00 1.24 · high 5.23 · good 27.30 · good Poor
Wed 14:00 1.22 · high 5.67 · high 27.30 · good Poor
Wed 15:00 1.20 · high 5.90 · high 27.30 · good Poor
Wed 16:00 1.20 · high 5.89 · high 27.30 · good Poor
Wed 17:00 1.18 · high 5.84 · high 27.30 · good Poor
Wed 18:00 1.18 · high 5.54 · high 27.30 · good Poor
Wed 19:00 1.14 · high 4.74 · good 27.30 · good Poor
Wed 20:00 1.12 · high 4.79 · good 27.20 · good Poor
Wed 21:00 1.12 · high 4.75 · good 27.20 · good Poor
Wed 22:00 1.12 · high 4.57 · good 27.20 · good Poor
Wed 23:00 1.14 · high 4.59 · good 27.20 · good Poor
Thu 00:00 1.14 · high 4.65 · good 27.20 · good Poor
Thu 01:00 1.14 · high 4.74 · good 27.20 · good Poor
Thu 02:00 1.14 · high 4.25 · good 27.10 · good Poor
Thu 03:00 1.14 · high 4.25 · good 27.10 · good Poor
Thu 04:00 1.14 · high 4.31 · good 27.10 · good Poor
Thu 05:00 1.16 · high 4.27 · good 27.10 · good Poor
Thu 06:00 1.16 · high 4.13 · good 27.10 · good Poor
Thu 07:00 1.16 · high 4.56 · good 27.10 · good Poor
Thu 08:00 1.18 · high 5.04 · good 27.10 · good Poor
Thu 09:00 1.18 · high 5.14 · good 27.10 · good Poor
Thu 10:00 1.18 · high 4.30 · good 27.10 · good Poor
Thu 11:00 1.20 · high 4.18 · good 27.20 · good Fair
Thu 12:00 1.20 · high 4.72 · good 27.20 · good Poor
Thu 13:00 1.20 · high 4.85 · good 27.30 · good Fair
Thu 14:00 1.12 · high 5.22 · good 27.40 · good Fair
Thu 15:00 1.12 · high 5.93 · high 27.40 · good Poor
Thu 16:00 1.12 · high 5.88 · high 27.40 · good Poor
Thu 17:00 1.14 · high 5.84 · high 27.40 · good Poor
Thu 18:00 1.16 · high 5.66 · high 27.30 · good Poor
Thu 19:00 1.16 · high 5.17 · good 27.30 · good Poor
Thu 20:00 1.16 · high 5.05 · good 27.30 · good Poor
Thu 21:00 1.16 · high 4.90 · good 27.30 · good Poor
Thu 22:00 1.16 · high 4.91 · good 27.30 · good Poor
Thu 23:00 1.14 · high 4.72 · good 27.30 · good Poor
Fri 00:00 1.14 · high 4.48 · good 27.20 · good Poor
Fri 01:00 1.14 · high 4.52 · good 27.20 · good Poor
Fri 02:00 1.12 · high 4.43 · good 27.20 · good Poor
Fri 03:00 1.12 · high 4.18 · good 27.20 · good Poor
Fri 04:00 1.14 · high 4.07 · good 27.20 · good Poor
Fri 05:00 1.14 · high 4.46 · good 27.20 · good Poor
Fri 06:00 1.16 · high 4.71 · good 27.20 · good Poor
Fri 07:00 1.18 · high 5.41 · high 27.20 · good Poor
Fri 08:00 1.22 · high 6.09 · high 27.20 · good Poor
Fri 09:00 1.24 · high 7.04 · high 27.20 · good Poor
Fri 10:00 1.26 · high 7.17 · high 27.20 · good Poor
Fri 11:00 1.26 · high 7.05 · high 27.20 · good Poor
Fri 12:00 1.28 · high 7.01 · high 27.30 · good Poor
Fri 13:00 1.28 · high 6.87 · high 27.30 · good Poor