MARINE REPORT / 72 HOURS

Grand Cayman Snorkel Report Today

Cayman Islands · Updated Sat 18:34 (EST) · Source: Snapshot

The skinny

Poor Data updated Sat 18:34 (EST)

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

Right now (forecast)

Poor · 3.3/10

Sat 18:00 (EST)

Later today

No fresh data for this period.

Next three days

Good · 6.3/10

Tue 09:00 (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

29.9°C

Max air

28.9°C

Sky

Cloudy

94% cloud

Good model window in the next 72 hours

Next good model window: Tue 08:00–10:00 (8% 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 08:00 and lasts until 10:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (71 hours)
  • Darkness (38 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

Nearby alternatives in Cayman Islands

Little Cayman

129 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sat 18:00 – Tue 18:00 (EST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.67 around Sun 07:00; 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 0.38m to 0.42m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.16 to 2.51m/s).

Tides range from 0.25m to 0.56m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
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
Sat 18:00 0.38 · high 0.85 · good 30.50 · out of range Good
Sat 19:00 0.38 · high 1.25 · good 30.50 · out of range Poor
Sat 20:00 0.38 · high 2.06 · good 30.40 · good Poor
Sat 21:00 0.40 · high 2.12 · good 30.40 · good Poor
Sat 22:00 0.40 · high 1.50 · good 30.40 · good Poor
Sat 23:00 0.40 · high 0.41 · good 30.30 · good Poor
Sun 00:00 0.40 · high 0.36 · good 30.30 · good Poor
Sun 01:00 0.40 · high 0.16 · good 30.30 · good Poor
Sun 02:00 0.40 · high 0.75 · good 30.20 · good Poor
Sun 03:00 0.40 · high 1.45 · good 30.20 · good Poor
Sun 04:00 0.40 · high 0.29 · good 30.10 · good Poor
Sun 05:00 0.40 · high 0.25 · good 30.10 · good Poor
Sun 06:00 0.38 · high 0.22 · good 29.90 · good Poor
Sun 07:00 0.38 · high 1.38 · good 29.90 · good Good
Sun 08:00 0.38 · high 1.52 · good 29.90 · good Good
Sun 09:00 0.42 · high 0.69 · good 30.00 · good Good
Sun 10:00 0.42 · high 0.90 · good 30.10 · good Fair
Sun 11:00 0.42 · high 0.96 · good 30.20 · good Fair
Sun 12:00 0.42 · high 1.39 · good 30.30 · good Fair
Sun 13:00 0.42 · high 2.50 · good 30.30 · good Fair
Sun 14:00 0.42 · high 2.51 · good 30.30 · good Fair
Sun 15:00 0.42 · high 0.91 · good 30.30 · good Fair
Sun 16:00 0.42 · high 2.31 · good 30.20 · good Fair
Sun 17:00 0.42 · high 0.87 · good 30.10 · good Fair
Sun 18:00 0.42 · high 1.59 · good 30.00 · good Fair
Sun 19:00 0.42 · high 0.87 · good 30.00 · good Poor
Sun 20:00 0.42 · high 0.58 · good 29.90 · good Poor
Sun 21:00 0.40 · high 0.80 · good 29.90 · good Poor
Sun 22:00 0.40 · high 1.96 · good 29.90 · good Poor
Sun 23:00 0.40 · high 2.12 · good 29.80 · good Poor
Mon 00:00 0.40 · high 2.69 · good 29.80 · good Poor
Mon 01:00 0.40 · high 2.37 · good 29.80 · good Poor
Mon 02:00 0.40 · high 1.85 · good 29.70 · good Poor
Mon 03:00 0.38 · high 1.73 · good 29.70 · good Poor
Mon 04:00 0.38 · high 1.39 · good 29.70 · good Poor
Mon 05:00 0.38 · high 1.14 · good 29.60 · good Poor
Mon 06:00 0.36 · good 1.03 · good 29.70 · good Poor
Mon 07:00 0.36 · good 1.45 · good 29.70 · good Good
Mon 08:00 0.36 · good 1.33 · good 29.70 · good Good
Mon 09:00 0.36 · good 2.00 · good 29.70 · good Good
Mon 10:00 0.38 · high 3.55 · good 29.80 · good Fair
Mon 11:00 0.40 · high 4.35 · good 29.80 · good Fair
Mon 12:00 0.42 · high 0.94 · good 29.80 · good Fair
Mon 13:00 0.44 · high 3.25 · good 29.90 · good Fair
Mon 14:00 0.50 · high 5.83 · high 29.90 · good Fair
Mon 15:00 0.56 · high 6.14 · high 29.90 · good Fair
Mon 16:00 0.62 · high 2.52 · good 29.90 · good Fair
Mon 17:00 0.60 · high 2.25 · good 29.90 · good Fair
Mon 18:00 0.58 · high 1.70 · good 29.90 · good Fair
Mon 19:00 0.56 · high 4.63 · good 29.90 · good Poor
Mon 20:00 0.54 · high 4.59 · good 29.90 · good Poor
Mon 21:00 0.54 · high 2.65 · good 29.80 · good Poor
Mon 22:00 0.52 · high 3.08 · good 29.80 · good Poor
Mon 23:00 0.52 · high 3.59 · good 29.70 · good Poor
Tue 00:00 0.52 · high 3.73 · good 29.70 · good Poor
Tue 01:00 0.52 · high 3.88 · good 29.70 · good Poor
Tue 02:00 0.54 · high 4.18 · good 29.60 · good Poor
Tue 03:00 0.58 · high 4.36 · good 29.60 · good Poor
Tue 04:00 0.60 · high 3.58 · good 29.60 · good Poor
Tue 05:00 0.60 · high 3.75 · good 29.60 · good Poor
Tue 06:00 0.60 · high 3.11 · good 29.50 · good Poor
Tue 07:00 0.58 · high 4.69 · good 29.40 · good Fair
Tue 08:00 0.58 · high 4.79 · good 29.40 · good Fair
Tue 09:00 0.58 · high 4.49 · good 29.50 · good Fair
Tue 10:00 0.58 · high 4.41 · good 29.50 · good Fair
Tue 11:00 0.58 · high 4.00 · good 29.50 · good Fair
Tue 12:00 0.58 · high 5.63 · high 29.60 · good Fair
Tue 13:00 0.58 · high 2.74 · good 29.60 · good Fair
Tue 14:00 0.58 · high 3.18 · good 29.60 · good Fair
Tue 15:00 0.56 · high 3.22 · good 29.60 · good Fair
Tue 16:00 0.56 · high 4.06 · good 29.60 · good Fair
Tue 17:00 0.56 · high 5.21 · good 29.60 · good Fair