SnorkelForecast.com

Grand Cayman Snorkel Report Today

Cayman Islands · Updated Tue 04:14 (EST) · Source: Snapshot

The skinny

Marginal Report Tue 04:43

Grand Cayman looks marginal today. The least-bad daylight window is around Tue 18:00, but waves is limiting the forecast.

Score: 5.3/10

Best time: Tue 18:00

Main risk: Waves

Best morning signal: Tue 06:00 (Fair).

Best afternoon signal: Tue 18:00 (Fair). Peak afternoon wind is about 4.1 m/s.

Email me when it is good

Sunrise

05:57

Sunset

19:05

Water

29.8°C

Max air

31.6°C

Sky

Clear

5% cloud

No safe 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

Tuesday

⚠️ fair conditions

Main blocker: Waves

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

⚠️ fair conditions

Main blocker: Waves

Best available hours

  • Tue 23:00 — Fair (0.53) · still limited by waves, tide/current
  • Wed 11:00 — Fair (0.51) · still limited by waves, tide/current
  • Tue 22:00 — Fair (0.51) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (66 hours)
  • Tide/current (47 hours)
  • Darkness (27 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 31/100

Low peak drift risk around Tue 14:00.

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 09:00

Tue 22:00, Wed 09:00

Nearby alternatives in Cayman Islands

Little Cayman

129 km away

❌ Poor

Advanced forecast data

Viewing historical data

Wed 09:00 – Sat 09:00 (EST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.36 around Wed 08:00; 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 1.18m to 1.42m).

Wind is at or below 5.4m/s in 9/24 sampled hours (range 3.13 to 6.92m/s).

Tides range from 0.48m to 0.81m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
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fair ⚠️ Fair
poor ❌ Limited
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poor ❌ Limited
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poor ❌ Limited
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fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Wed 09:00 1.18 · high 4.15 · good 29.80 · good poor
Wed 10:00 1.20 · high 3.13 · good 29.80 · good poor
Wed 11:00 1.20 · high 5.93 · high 29.80 · good poor
Wed 12:00 1.22 · high 6.48 · high 29.80 · good poor
Wed 13:00 1.24 · high 5.88 · high 29.80 · good fair
Wed 14:00 1.26 · high 6.92 · high 29.80 · good poor
Wed 15:00 1.28 · high 6.24 · high 29.80 · good poor
Wed 16:00 1.30 · high 6.34 · high 29.80 · good poor
Wed 17:00 1.32 · high 6.69 · high 29.80 · good poor
Wed 18:00 1.34 · high 6.22 · high 29.80 · good poor
Wed 19:00 1.34 · high 5.60 · high 29.80 · good poor
Wed 20:00 1.36 · high 6.39 · high 29.80 · good poor
Wed 21:00 1.36 · high 6.30 · high 29.80 · good poor
Wed 22:00 1.38 · high 6.13 · high 29.70 · good poor
Wed 23:00 1.40 · high 6.08 · high 29.70 · good poor
Thu 00:00 1.42 · high 5.94 · high 29.70 · good poor
Thu 01:00 1.42 · high 5.30 · good 29.70 · good poor
Thu 02:00 1.42 · high 5.56 · high 29.70 · good poor
Thu 03:00 1.42 · high 5.30 · good 29.70 · good poor
Thu 04:00 1.42 · high 4.45 · good 29.70 · good poor
Thu 05:00 1.40 · high 4.20 · good 29.70 · good poor
Thu 06:00 1.40 · high 4.09 · good 29.70 · good poor
Thu 07:00 1.40 · high 4.09 · good 29.70 · good poor
Thu 08:00 1.38 · high 4.10 · good 29.60 · good poor
Thu 09:00 1.38 · high 4.58 · good 29.60 · good poor
Thu 10:00 1.38 · high 5.07 · good 29.60 · good poor
Thu 11:00 1.38 · high 5.71 · high 29.60 · good poor
Thu 12:00 1.38 · high 5.86 · high 29.60 · good poor
Thu 13:00 1.42 · high 6.35 · high 29.60 · good poor
Thu 14:00 1.46 · high 7.13 · high 29.60 · good poor
Thu 15:00 1.50 · high 7.46 · high 29.70 · good poor
Thu 16:00 1.54 · high 7.29 · high 29.70 · good poor
Thu 17:00 1.56 · high 6.93 · high 29.80 · good poor
Thu 18:00 1.60 · high 6.74 · high 29.80 · good poor
Thu 19:00 1.60 · high 6.57 · high 29.90 · good poor
Thu 20:00 1.58 · high 6.58 · high 29.90 · good poor
Thu 21:00 1.58 · high 6.38 · high 29.90 · good poor
Thu 22:00 1.58 · high 6.15 · high 29.90 · good fair
Thu 23:00 1.56 · high 6.00 · high 29.90 · good poor
Fri 00:00 1.56 · high 5.86 · high 29.90 · good poor
Fri 01:00 1.52 · high 5.58 · high 29.90 · good poor
Fri 02:00 1.50 · high 5.31 · good 29.90 · good poor
Fri 03:00 1.46 · high 4.93 · good 29.90 · good poor
Fri 04:00 1.44 · high 4.30 · good 29.80 · good poor
Fri 05:00 1.42 · high 4.05 · good 29.80 · good poor
Fri 06:00 1.40 · high 4.08 · good 29.80 · good poor
Fri 07:00 1.38 · high 3.83 · good 29.80 · good poor
Fri 08:00 1.36 · high 4.05 · good 29.70 · good poor
Fri 09:00 1.34 · high 4.12 · good 29.70 · good poor
Fri 10:00 1.32 · high 4.46 · good 29.70 · good poor
Fri 11:00 1.32 · high 4.27 · good 29.70 · good fair
Fri 12:00 1.30 · high 4.90 · good 29.70 · good fair
Fri 13:00 1.30 · high 5.76 · high 29.70 · good fair
Fri 14:00 1.30 · high 6.04 · high 29.80 · good poor
Fri 15:00 1.30 · high 6.34 · high 29.80 · good poor
Fri 16:00 1.32 · high 6.75 · high 29.90 · good poor
Fri 17:00 1.36 · high 6.55 · high 29.90 · good poor
Fri 18:00 1.38 · high 6.44 · high 29.90 · good fair
Fri 19:00 1.38 · high 6.02 · high 30.00 · good fair
Fri 20:00 1.40 · high 5.70 · high 30.00 · good poor
Fri 21:00 1.40 · high 5.20 · good 30.00 · good fair
Fri 22:00 1.38 · high 4.79 · good 30.10 · good fair
Fri 23:00 1.36 · high 4.47 · good 30.10 · good fair
Sat 00:00 1.34 · high 4.41 · good 30.10 · good poor
Sat 01:00 1.32 · high 4.61 · good 30.10 · good poor
Sat 02:00 1.28 · high 4.23 · good 30.00 · good poor
Sat 03:00 1.26 · high 4.22 · good 30.00 · good poor
Sat 04:00 1.24 · high 3.77 · good 29.90 · good poor
Sat 05:00 1.22 · high 2.87 · good 29.90 · good poor
Sat 06:00 1.26 · high 1.93 · good 29.90 · good poor
Sat 07:00 1.26 · high 1.69 · good 29.90 · good poor
Sat 08:00 1.26 · high 2.08 · good 29.90 · good poor