MARINE REPORT / 72 HOURS

Mafia Island Snorkel Report Today

Tanzania · Updated Sat 16:22 (EAT) · Source: Snapshot

The skinny

Marginal Data updated Sat 16:22 (EAT)

Mafia Island looks marginal today. The least-bad daylight window is around Sat 18:00, but waves is limiting the forecast.

Right now (forecast)

Fair · 3.7/10

Sat 16:00 (EAT)

Later today

Fair · 3.7/10

Sat 18:00 (EAT)

Next three days

Fair · 4.5/10

Tue 08:00 (EAT)

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

Score: 3.7/10

Best time: Sat 18:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Sat 18:00 (Fair). Peak afternoon wind is about 5.7 m/s.

Email me when it is good

Sunrise

05:57

Sunset

18:15

Water

27.0°C

Max air

27.9°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

⚠️ Fair conditions

Main blocker: Waves

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Tue 08:00: Fair (0.45) · still limited by waves, tide/current
  • Tue 07:00: Fair (0.45) · still limited by waves, tide/current
  • Tue 06:00: Fair (0.45) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (71 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, Tue 11:00

Nearby alternatives in Tanzania

Mnemba Atoll

238 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sun 16:00 – Wed 16:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.35 around Mon 09:00; 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 1.24m to 1.38m).

Wind is at or below 5.4m/s in 11/24 sampled hours (range 3.91 to 6.45m/s).

Tides range from -0.03m to 1.14m; 2 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
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
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
Fair ⚠️ Fair
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
Sun 16:00 1.24 · high 6.44 · high 27.40 · good Poor
Sun 17:00 1.28 · high 6.45 · high 27.40 · good Poor
Sun 18:00 1.30 · high 6.25 · high 27.30 · good Poor
Sun 19:00 1.32 · high 6.01 · high 27.30 · good Poor
Sun 20:00 1.34 · high 6.03 · high 27.30 · good Poor
Sun 21:00 1.36 · high 6.33 · high 27.30 · good Poor
Sun 22:00 1.36 · high 6.15 · high 27.30 · good Poor
Sun 23:00 1.38 · high 5.66 · high 27.30 · good Poor
Mon 00:00 1.38 · high 4.90 · good 27.20 · good Poor
Mon 01:00 1.38 · high 4.62 · good 27.20 · good Poor
Mon 02:00 1.36 · high 4.30 · good 27.20 · good Poor
Mon 03:00 1.36 · high 4.05 · good 27.20 · good Poor
Mon 04:00 1.34 · high 3.94 · good 27.20 · good Poor
Mon 05:00 1.34 · high 3.91 · good 27.20 · good Poor
Mon 06:00 1.32 · high 3.98 · good 27.20 · good Poor
Mon 07:00 1.32 · high 4.55 · good 27.20 · good Poor
Mon 08:00 1.30 · high 4.79 · good 27.20 · good Poor
Mon 09:00 1.30 · high 5.55 · high 27.20 · good Fair
Mon 10:00 1.28 · high 5.73 · high 27.20 · good Poor
Mon 11:00 1.28 · high 5.45 · high 27.20 · good Poor
Mon 12:00 1.26 · high 5.48 · high 27.30 · good Poor
Mon 13:00 1.24 · high 5.27 · good 27.30 · good Poor
Mon 14:00 1.26 · high 5.16 · good 27.30 · good Poor
Mon 15:00 1.24 · high 5.53 · high 27.40 · good Poor
Mon 16:00 1.24 · high 5.26 · good 27.40 · good Poor
Mon 17:00 1.22 · high 5.14 · good 27.40 · good Poor
Mon 18:00 1.22 · high 4.56 · good 27.30 · good Fair
Mon 19:00 1.22 · high 4.60 · good 27.30 · good Poor
Mon 20:00 1.20 · high 4.50 · good 27.30 · good Poor
Mon 21:00 1.16 · high 4.88 · good 27.30 · good Poor
Mon 22:00 1.16 · high 4.83 · good 27.30 · good Poor
Mon 23:00 1.14 · high 4.73 · good 27.20 · good Poor
Tue 00:00 1.14 · high 4.03 · good 27.20 · good Poor
Tue 01:00 1.14 · high 4.00 · good 27.20 · good Poor
Tue 02:00 1.16 · high 3.78 · good 27.20 · good Poor
Tue 03:00 1.16 · high 3.85 · good 27.20 · good Poor
Tue 04:00 1.18 · high 4.37 · good 27.20 · good Poor
Tue 05:00 1.18 · high 4.85 · good 27.10 · good Poor
Tue 06:00 1.20 · high 4.85 · good 27.10 · good Poor
Tue 07:00 1.22 · high 5.08 · good 27.10 · good Fair
Tue 08:00 1.26 · high 5.80 · high 27.10 · good Poor
Tue 09:00 1.28 · high 5.77 · high 27.10 · good Poor
Tue 10:00 1.28 · high 6.98 · high 27.10 · good Poor
Tue 11:00 1.30 · high 6.45 · high 27.20 · good Poor
Tue 12:00 1.30 · high 6.09 · high 27.20 · good Poor
Tue 13:00 1.30 · high 5.84 · high 27.20 · good Poor
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