MARINE REPORT / 72 HOURS

Mafia Island Snorkel Report Today

Tanzania · Updated Sat 06:36 (EAT) · Source: Snapshot

The skinny

Marginal Data updated Sat 06:36 (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 · 4.1/10

Sat 08:00 (EAT)

Later today

Fair · 3.9/10

Sat 18:00 (EAT)

Next three days

Fair · 4.5/10

Mon 10:00 (EAT)

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

Score: 3.9/10

Best time: Sat 18:00

Main risk: Waves

Best morning signal: Sat 10:00 (Fair).

Best afternoon signal: Sat 18:00 (Fair). Peak afternoon wind is about 6.7 m/s.

Email me when it is good

Sunrise

05:57

Sunset

18:15

Water

26.7°C

Max air

29.5°C

Sky

Clear

26% 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

  • Mon 10:00: Fair (0.45) · still limited by waves, tide/current
  • Mon 09:00: Fair (0.44) · still limited by waves, tide/current
  • Mon 11:00: Fair (0.43) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (69 hours)
  • Tide/current (69 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

Nearby alternatives in Tanzania

Mnemba Atoll

238 km away

❌ Poor

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 0.36 around Tue 14:00; 2 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 1.3m to 1.46m).

Wind is at or below 5.4m/s in 9/24 sampled hours (range 4.59 to 6.33m/s).

Tides range from -1.15m to 2.21m; 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
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
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
Poor ❌ Limited
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
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
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
Tue 08:00 1.32 · high 4.82 · good 27.20 · good Poor
Tue 09:00 1.32 · high 4.63 · good 27.20 · good Poor
Tue 10:00 1.32 · high 5.15 · good 27.20 · good Poor
Tue 11:00 1.34 · high 4.95 · good 27.20 · good Poor
Tue 12:00 1.34 · high 6.09 · high 27.30 · good Poor
Tue 13:00 1.34 · high 5.55 · high 27.30 · good Poor
Tue 14:00 1.34 · high 5.64 · high 27.40 · good Fair
Tue 15:00 1.34 · high 6.00 · high 27.40 · good Poor
Tue 16:00 1.34 · high 5.88 · high 27.40 · good Poor
Tue 17:00 1.34 · high 5.77 · high 27.40 · good Poor
Tue 18:00 1.34 · high 5.54 · high 27.40 · good Poor
Tue 19:00 1.36 · high 5.80 · high 27.30 · good Poor
Tue 20:00 1.30 · high 6.21 · high 27.30 · good Poor
Tue 21:00 1.32 · high 6.13 · high 27.30 · good Poor
Tue 22:00 1.36 · high 6.33 · high 27.30 · good Poor
Tue 23:00 1.38 · high 6.33 · high 27.20 · good Poor
Wed 00:00 1.42 · high 5.66 · high 27.20 · good Poor
Wed 01:00 1.44 · high 5.24 · good 27.20 · good Poor
Wed 02:00 1.44 · high 5.50 · high 27.20 · good Poor
Wed 03:00 1.46 · high 5.56 · high 27.20 · good Poor
Wed 04:00 1.46 · high 5.09 · good 27.20 · good Poor
Wed 05:00 1.46 · high 5.01 · good 27.10 · good Poor
Wed 06:00 1.46 · high 4.59 · good 27.10 · good Fair
Wed 07:00 1.46 · high 5.26 · good 27.10 · good Poor
Wed 08:00 1.46 · high 5.93 · high 27.10 · good Poor
Wed 09:00 1.46 · high 6.33 · high 27.10 · good Poor
Wed 10:00 1.46 · high 5.76 · high 27.10 · good Poor
Wed 11:00 1.46 · high 5.53 · high 27.20 · good Poor
Wed 12:00 1.46 · high 6.62 · high 27.20 · good Poor
Wed 13:00 1.48 · high 6.09 · high 27.20 · good Poor
Wed 14:00 1.48 · high 6.48 · high 27.30 · good Poor
Wed 15:00 1.54 · high 6.72 · high 27.30 · good Poor
Wed 16:00 1.54 · high 7.08 · high 27.30 · good Poor
Wed 17:00 1.52 · high 7.08 · high 27.30 · good Poor
Wed 18:00 1.46 · high 6.43 · high 27.30 · good Poor
Wed 19:00 1.46 · high 6.12 · high 27.30 · good Poor
Wed 20:00 1.46 · high 5.90 · high 27.20 · good Poor
Wed 21:00 1.46 · high 5.87 · high 27.20 · good Poor
Wed 22:00 1.46 · high 5.59 · high 27.20 · good Poor
Wed 23:00 1.48 · high 5.17 · good 27.20 · good Poor
Thu 00:00 1.48 · high 4.88 · good 27.20 · good Poor
Thu 01:00 1.48 · high 4.46 · good 27.20 · good Poor
Thu 02:00 1.46 · high 4.18 · good 27.10 · good Poor
Thu 03:00 1.46 · high 3.74 · good 27.10 · good Poor
Thu 04:00 1.46 · high 3.60 · good 27.10 · good Poor
Thu 05:00 1.46 · high 3.62 · good 27.10 · good Poor
Thu 06:00 1.46 · high 3.51 · good 27.10 · good Fair
Thu 07:00 1.46 · high 4.05 · good 27.10 · good Fair
Thu 08:00 1.44 · high 5.00 · good 27.10 · good Fair
Thu 09:00 1.44 · high 5.59 · high 27.10 · good Poor
Thu 10:00 1.44 · high 5.68 · high 27.20 · good Fair
Thu 11:00 1.42 · high 5.70 · high 27.20 · good Fair
Thu 12:00 1.42 · high 5.44 · high 27.20 · good Fair
Thu 13:00 1.40 · high 5.60 · high 27.30 · good Fair
Thu 14:00 1.40 · high 5.99 · high 27.30 · good Poor
Thu 15:00 1.38 · high 6.15 · high 27.30 · good Poor
Thu 16:00 1.38 · high 6.35 · high 27.30 · good Poor
Thu 17:00 1.40 · high 6.04 · high 27.30 · good Fair
Thu 18:00 1.40 · high 6.31 · high 27.30 · good Poor
Thu 19:00 1.40 · high 6.57 · high 27.20 · good Poor
Thu 20:00 1.42 · high 6.49 · high 27.20 · good Poor
Thu 21:00 1.44 · high 6.59 · high 27.20 · good Poor
Thu 22:00 1.46 · high 6.67 · high 27.20 · good Poor
Thu 23:00 1.48 · high 6.48 · high 27.10 · good Poor
Fri 00:00 1.50 · high 6.03 · high 27.10 · good Poor
Fri 01:00 1.50 · high 5.70 · high 27.10 · good Poor
Fri 02:00 1.50 · high 5.37 · good 27.10 · good Poor
Fri 03:00 1.50 · high 5.27 · good 27.10 · good Poor
Fri 04:00 1.50 · high 5.14 · good 27.10 · good Poor
Fri 05:00 1.48 · high 5.13 · good 27.00 · good Poor
Fri 06:00 1.48 · high 5.09 · good 27.00 · good Fair
Fri 07:00 1.46 · high 5.62 · high 27.00 · good Poor