MARINE REPORT / 72 HOURS

Grand Cayman Snorkel Report Today

Cayman Islands · Updated Sat 21:42 (EST) · Source: Snapshot

The skinny

Poor Data updated Sat 21:42 (EST)

Grand Cayman has no good model window later today. Check the three-day outlook and official beach advisories.

Right now (forecast)

Poor · 0.0/10

Sat 22:00 (EST)

Later today

No fresh data for this period.

Next three days

Good · 5.8/10

Tue 12:00 (EST)

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

Score: 0.0/10

Best time: -

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Also see the best places to snorkel in the Caribbean, ranked on our stored historical scores.

Sunrise

06:20

Sunset

17:59

Water

29.8°C

Max air

28.2°C

Sky

Partly cloudy

49% cloud

Good model window in the next 72 hours

Next good model window: Tue 12:00–13:00 (3% of the next 72h meets the model threshold)

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

The next good model window starts at Tue 12:00 and lasts until 13:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (70 hours)
  • Darkness (37 hours)

Jellyfish drift risk

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

Low · 32/100

Low peak drift risk around Sun 11:00.

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: Sun 03:00

Sun 03:00, Mon 04:00, Tue 05:00, Tue 17:00

Nearby alternatives in Cayman Islands

Little Cayman

129 km away

❌ Poor

Advanced forecast data

Viewing historical data

Tue 22:00 – Fri 22:00 (EST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.38 around Wed 16:00; 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 0.7m to 0.92m).

Wind is at or below 5.4m/s in 23/24 sampled hours (range 1.41 to 5.69m/s).

Tides range from 0.21m to 0.46m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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
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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
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
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
Tue 22:00 0.80 · high 4.83 · good 30.40 · good Poor
Tue 23:00 0.80 · high 5.19 · good 30.40 · good Poor
Wed 00:00 0.82 · high 4.77 · good 30.30 · good Poor
Wed 01:00 0.82 · high 2.70 · good 30.30 · good Poor
Wed 02:00 0.82 · high 4.10 · good 30.30 · good Poor
Wed 03:00 0.84 · high 5.69 · high 30.30 · good Poor
Wed 04:00 0.84 · high 4.00 · good 30.30 · good Poor
Wed 05:00 0.84 · high 4.78 · good 30.20 · good Poor
Wed 06:00 0.70 · high 4.92 · good 30.20 · good Poor
Wed 07:00 0.72 · high 4.74 · good 30.20 · good Poor
Wed 08:00 0.72 · high 4.83 · good 30.20 · good Poor
Wed 09:00 0.72 · high 4.51 · good 30.30 · good Poor
Wed 10:00 0.72 · high 4.80 · good 30.30 · good Poor
Wed 11:00 0.92 · high 4.73 · good 30.30 · good Poor
Wed 12:00 0.90 · high 4.90 · good 30.40 · good Poor
Wed 13:00 0.88 · high 3.66 · good 30.40 · good Poor
Wed 14:00 0.86 · high 2.06 · good 30.40 · good Fair
Wed 15:00 0.84 · high 1.52 · good 30.40 · good Fair
Wed 16:00 0.82 · high 1.41 · good 30.40 · good Fair
Wed 17:00 0.80 · high 2.45 · good 30.40 · good Fair
Wed 18:00 0.78 · high 2.24 · good 30.40 · good Fair
Wed 19:00 0.76 · high 2.98 · good 30.40 · good Poor
Wed 20:00 0.74 · high 3.13 · good 30.40 · good Poor
Wed 21:00 0.74 · high 3.22 · good 30.40 · good Poor
Wed 22:00 0.72 · high 3.37 · good 30.40 · good Poor
Wed 23:00 0.72 · high 3.40 · good 30.30 · good Poor
Thu 00:00 0.70 · high 3.83 · good 30.30 · good Poor
Thu 01:00 0.70 · high 3.41 · good 30.30 · good Poor
Thu 02:00 0.68 · high 3.63 · good 30.30 · good Poor
Thu 03:00 0.68 · high 3.83 · good 30.30 · good Poor
Thu 04:00 0.66 · high 3.40 · good 30.30 · good Poor
Thu 05:00 0.66 · high 3.31 · good 30.20 · good Poor
Thu 06:00 0.58 · high 3.13 · good 30.20 · good Poor
Thu 07:00 0.58 · high 0.92 · good 30.10 · good Fair
Thu 08:00 0.58 · high 1.55 · good 30.20 · good Fair
Thu 09:00 0.56 · high 3.02 · good 30.20 · good Fair
Thu 10:00 0.56 · high 3.33 · good 30.20 · good Fair
Thu 11:00 0.58 · high 2.55 · good 30.30 · good Fair
Thu 12:00 0.58 · high 2.92 · good 30.30 · good Fair
Thu 13:00 0.58 · high 2.80 · good 30.40 · good Fair
Thu 14:00 0.58 · high 2.89 · good 30.40 · good Fair
Thu 15:00 0.58 · high 3.58 · good 30.40 · good Fair
Thu 16:00 0.58 · high 4.48 · good 30.40 · good Fair
Thu 17:00 0.58 · high 3.13 · good 30.40 · good Fair
Thu 18:00 0.56 · high 3.56 · good 30.40 · good Fair
Thu 19:00 0.56 · high 3.73 · good 30.40 · good Poor
Thu 20:00 0.56 · high 3.48 · good 30.40 · good Poor
Thu 21:00 0.56 · high 2.90 · good 30.40 · good Poor
Thu 22:00 0.56 · high 2.81 · good 30.40 · good Poor
Thu 23:00 0.56 · high 2.96 · good 30.40 · good Poor
Fri 00:00 0.54 · high 2.63 · good 30.30 · good Poor
Fri 01:00 0.54 · high 2.38 · good 30.30 · good Poor
Fri 02:00 0.54 · high 2.21 · good 30.30 · good Poor
Fri 03:00 0.52 · high 2.01 · good 30.30 · good Poor
Fri 04:00 0.52 · high 1.36 · good 30.20 · good Poor
Fri 05:00 0.52 · high 1.68 · good 30.20 · good Poor
Fri 06:00 0.48 · high 2.60 · good 30.20 · good Poor
Fri 07:00 0.48 · high 2.66 · good 30.20 · good Fair
Fri 08:00 0.48 · high 2.70 · good 30.20 · good Fair
Fri 09:00 0.50 · high 2.61 · good 30.30 · good Fair
Fri 10:00 0.48 · high 3.11 · good 30.30 · good Fair
Fri 11:00 0.48 · high 3.42 · good 30.40 · good Fair
Fri 12:00 0.48 · high 3.07 · good 30.40 · good Fair
Fri 13:00 0.48 · high 2.61 · good 30.50 · out of range Fair
Fri 14:00 0.48 · high 2.44 · good 30.50 · out of range Fair
Fri 15:00 0.46 · high 2.10 · good 30.50 · out of range Fair
Fri 16:00 0.46 · high 1.95 · good 30.50 · out of range Fair
Fri 17:00 0.44 · high 2.12 · good 30.50 · out of range Fair
Fri 18:00 0.44 · high 2.30 · good 30.50 · out of range Good
Fri 19:00 0.42 · high 2.75 · good 30.50 · out of range Poor
Fri 20:00 0.42 · high 2.14 · good 30.50 · out of range Poor
Fri 21:00 0.42 · high 2.11 · good 30.40 · good Poor