MARINE REPORT / 72 HOURS

Mafia Island Snorkel Report Today

Tanzania · Updated Sun 08:17 (EAT) · Source: Snapshot

The skinny

Marginal Data updated Sun 08:17 (EAT)

Mafia Island looks marginal today. The least-bad daylight window is around Sun 09:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 3.4/10

Sun 08:00 (EAT)

Later today

Fair · 4.1/10

Sun 09:00 (EAT)

Next three days

Fair · 4.8/10

Wed 06:00 (EAT)

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

Score: 4.1/10

Best time: Sun 09:00

Main risk: Waves

Best morning signal: Sun 09:00 (Fair).

Best afternoon signal: Sun 17:00 (Fair). Peak afternoon wind is about 5.3 m/s.

Email me when it is good

Sunrise

05:57

Sunset

18:15

Water

26.8°C

Max air

28.8°C

Sky

Clear

19% 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

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Tuesday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Wed 06:00: Fair (0.48) · still limited by waves, tide/current
  • Wed 07:00: Fair (0.45) · still limited by waves, tide/current
  • Mon 18:00: Fair (0.43) · 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

Sun 20:00, Mon 09:00, Tue 11:00

Nearby alternatives in Tanzania

Mnemba Atoll

238 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Tue 08:00 – Fri 08:00 (EAT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.43 around Tue 08:00; 12 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 1.2m to 1.32m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 4.0 to 5.15m/s).

Tides range from -0.37m to 1.16m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
Poor ❌ Limited
Poor ❌ Limited
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
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 08:00 1.32 · high 4.53 · good 26.70 · good Fair
Tue 09:00 1.32 · high 4.97 · good 26.70 · good Fair
Tue 10:00 1.32 · high 4.85 · good 26.70 · good Fair
Tue 11:00 1.30 · high 4.74 · good 26.70 · good Fair
Tue 12:00 1.30 · high 4.67 · good 26.80 · good Fair
Tue 13:00 1.30 · high 4.79 · good 26.80 · good Fair
Tue 14:00 1.22 · high 4.90 · good 26.90 · good Fair
Tue 15:00 1.20 · high 4.82 · good 26.90 · good Fair
Tue 16:00 1.20 · high 4.61 · good 26.90 · good Fair
Tue 17:00 1.20 · high 4.57 · good 26.90 · good Fair
Tue 18:00 1.20 · high 4.88 · good 26.80 · good Fair
Tue 19:00 1.20 · high 4.61 · good 26.80 · good Poor
Tue 20:00 1.20 · high 4.58 · good 26.80 · good Poor
Tue 21:00 1.22 · high 5.15 · good 26.80 · good Poor
Tue 22:00 1.24 · high 4.66 · good 26.80 · good Poor
Tue 23:00 1.24 · high 4.01 · good 26.80 · good Poor
Wed 00:00 1.26 · high 4.00 · good 26.70 · good Poor
Wed 01:00 1.26 · high 4.62 · good 26.70 · good Poor
Wed 02:00 1.26 · high 4.38 · good 26.70 · good Poor
Wed 03:00 1.26 · high 4.29 · good 26.70 · good Poor
Wed 04:00 1.26 · high 4.11 · good 26.70 · good Poor
Wed 05:00 1.24 · high 4.08 · good 26.70 · good Poor
Wed 06:00 1.24 · high 4.21 · good 26.70 · good Poor
Wed 07:00 1.22 · high 4.34 · good 26.70 · good Fair
Wed 08:00 1.20 · high 4.89 · good 26.70 · good Fair
Wed 09:00 1.18 · high 5.26 · good 26.70 · good Fair
Wed 10:00 1.16 · high 5.28 · good 26.70 · good Fair
Wed 11:00 1.16 · high 5.39 · good 26.80 · good Fair
Wed 12:00 1.14 · high 5.21 · good 26.80 · good Fair
Wed 13:00 1.14 · high 5.10 · good 26.90 · good Fair
Wed 14:00 1.14 · high 5.46 · high 26.90 · good Fair
Wed 15:00 1.12 · high 5.10 · good 27.00 · good Fair
Wed 16:00 1.10 · high 5.03 · good 27.00 · good Fair
Wed 17:00 1.10 · high 5.34 · good 27.00 · good Fair
Wed 18:00 1.08 · high 5.47 · high 26.90 · good Fair
Wed 19:00 1.04 · high 4.07 · good 26.90 · good Poor
Wed 20:00 1.04 · high 3.91 · good 26.80 · good Poor
Wed 21:00 1.04 · high 4.21 · good 26.80 · good Poor
Wed 22:00 1.04 · high 4.39 · good 26.80 · good Poor
Wed 23:00 1.04 · high 4.41 · good 26.80 · good Poor
Thu 00:00 1.04 · high 4.28 · good 26.80 · good Poor
Thu 01:00 1.02 · high 3.94 · good 26.80 · good Poor
Thu 02:00 1.00 · high 3.75 · good 26.80 · good Poor
Thu 03:00 0.98 · high 3.53 · good 26.80 · good Poor
Thu 04:00 0.96 · high 3.34 · good 26.80 · good Poor
Thu 05:00 0.96 · high 3.06 · good 26.70 · good Poor
Thu 06:00 0.94 · high 2.82 · good 26.70 · good Poor
Thu 07:00 0.94 · high 3.17 · good 26.70 · good Fair
Thu 08:00 0.92 · high 3.72 · good 26.70 · good Fair
Thu 09:00 0.92 · high 4.62 · good 26.70 · good Fair
Thu 10:00 0.92 · high 5.07 · good 26.80 · good Poor
Thu 11:00 0.90 · high 5.02 · good 26.80 · good Poor
Thu 12:00 0.90 · high 4.99 · good 26.90 · good Poor
Thu 13:00 0.90 · high 5.02 · good 26.90 · good Poor
Thu 14:00 0.88 · high 4.97 · good 27.00 · good Poor
Thu 15:00 0.88 · high 5.09 · good 27.10 · good Fair
Thu 16:00 0.88 · high 5.23 · good 27.10 · good Fair
Thu 17:00 0.90 · high 5.46 · high 27.10 · good Fair
Thu 18:00 0.90 · high 5.39 · good 27.00 · good Fair
Thu 19:00 0.88 · high 5.03 · good 27.00 · good Poor
Thu 20:00 0.88 · high 5.12 · good 26.90 · good Poor
Thu 21:00 0.90 · high 5.27 · good 26.90 · good Poor
Thu 22:00 0.92 · high 5.28 · good 26.90 · good Poor
Thu 23:00 0.92 · high 5.07 · good 26.90 · good Poor
Fri 00:00 0.94 · high 4.58 · good 26.90 · good Poor
Fri 01:00 0.92 · high 4.37 · good 26.90 · good Poor
Fri 02:00 0.92 · high 4.07 · good 26.90 · good Poor
Fri 03:00 0.90 · high 4.07 · good 26.90 · good Poor
Fri 04:00 0.90 · high 3.82 · good 26.90 · good Poor
Fri 05:00 0.88 · high 3.38 · good 26.80 · good Poor
Fri 06:00 0.88 · high 3.62 · good 26.80 · good Poor
Fri 07:00 0.86 · high 4.25 · good 26.80 · good Fair