MARINE REPORT / 72 HOURS

Grand Cayman Snorkel Report Today

Cayman Islands · Updated Fri 23:09 (EST) · Source: Snapshot

The skinny

No forecast for later today Data updated Fri 23:09 (EST)

No remaining forecast hours are available for today in Grand Cayman. Check the three-day outlook.

Right now (forecast)

Poor · 0.0/10

Fri 23:00 (EST)

Later today

No fresh data for this period.

Next three days

Fair · 5.1/10

Mon 16:00 (EST)

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

Score: No score

Best time: -

Main risk: Changing Conditions

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

18:00

Water

29.9°C

Max air

29.3°C

Sky

Cloudy

100% 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 16:00: Fair (0.51) · still limited by waves, tide/current
  • Mon 10:00: Fair (0.50) · still limited by waves, tide/current
  • Mon 09:00: Fair (0.50) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (71 hours)
  • Darkness (37 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sat 13:00.

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: Mon 04:00

Mon 04:00

Nearby alternatives in Cayman Islands

Little Cayman

129 km away

❌ Poor

Advanced forecast data

Viewing historical data

Tue 23:00 – Fri 23:00 (EST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.41 around Wed 09:00; 11 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 0.8m to 1.14m).

Wind is at or below 5.4m/s in 20/24 sampled hours (range 3.95 to 5.76m/s).

Tides range from 0.45m to 0.63m; 0 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
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
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
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
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
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 23:00 0.80 · high 4.14 · good 29.60 · good Poor
Wed 00:00 0.80 · high 4.52 · good 29.60 · good Poor
Wed 01:00 0.80 · high 4.94 · good 29.60 · good Poor
Wed 02:00 0.80 · high 4.46 · good 29.60 · good Poor
Wed 03:00 0.82 · high 4.07 · good 29.50 · good Poor
Wed 04:00 0.82 · high 3.95 · good 29.50 · good Poor
Wed 05:00 0.84 · high 4.55 · good 29.50 · good Poor
Wed 06:00 0.88 · high 4.60 · good 29.50 · good Poor
Wed 07:00 0.94 · high 5.58 · high 29.50 · good Fair
Wed 08:00 0.96 · high 4.75 · good 29.50 · good Fair
Wed 09:00 0.96 · high 4.65 · good 29.60 · good Fair
Wed 10:00 0.98 · high 4.71 · good 29.60 · good Fair
Wed 11:00 0.98 · high 5.06 · good 29.70 · good Fair
Wed 12:00 1.00 · high 5.01 · good 29.70 · good Fair
Wed 13:00 1.00 · high 4.70 · good 29.70 · good Fair
Wed 14:00 1.02 · high 4.21 · good 29.70 · good Fair
Wed 15:00 1.04 · high 4.78 · good 29.80 · good Fair
Wed 16:00 1.06 · high 4.83 · good 29.80 · good Fair
Wed 17:00 1.10 · high 4.90 · good 29.80 · good Fair
Wed 18:00 1.12 · high 5.21 · good 29.80 · good Poor
Wed 19:00 0.94 · high 5.22 · good 29.80 · good Poor
Wed 20:00 1.00 · high 5.56 · high 29.80 · good Poor
Wed 21:00 1.08 · high 5.76 · high 29.70 · good Poor
Wed 22:00 1.14 · high 5.51 · high 29.70 · good Poor
Wed 23:00 1.18 · high 5.69 · high 29.70 · good Poor
Thu 00:00 1.20 · high 5.30 · good 29.70 · good Poor
Thu 01:00 1.24 · high 6.09 · high 29.60 · good Poor
Thu 02:00 1.26 · high 6.18 · high 29.60 · good Poor
Thu 03:00 1.28 · high 7.14 · high 29.60 · good Poor
Thu 04:00 1.30 · high 6.57 · high 29.50 · good Poor
Thu 05:00 1.30 · high 6.31 · high 29.50 · good Poor
Thu 06:00 1.30 · high 5.60 · high 29.50 · good Poor
Thu 07:00 1.34 · high 5.46 · high 29.50 · good Poor
Thu 08:00 1.34 · high 4.83 · good 29.50 · good Poor
Thu 09:00 1.36 · high 4.82 · good 29.50 · good Poor
Thu 10:00 1.36 · high 4.47 · good 29.60 · good Fair
Thu 11:00 1.30 · high 5.40 · good 29.60 · good Fair
Thu 12:00 1.30 · high 6.13 · high 29.60 · good Poor
Thu 13:00 1.30 · high 6.12 · high 29.60 · good Poor
Thu 14:00 1.30 · high 6.02 · high 29.60 · good Fair
Thu 15:00 1.30 · high 6.85 · high 29.60 · good Poor
Thu 16:00 1.30 · high 5.47 · high 29.60 · good Fair
Thu 17:00 1.28 · high 4.83 · good 29.60 · good Fair
Thu 18:00 1.28 · high 4.92 · good 29.60 · good Fair
Thu 19:00 1.26 · high 6.08 · high 29.60 · good Poor
Thu 20:00 1.24 · high 5.36 · good 29.60 · good Poor
Thu 21:00 1.24 · high 6.04 · high 29.60 · good Poor
Thu 22:00 1.22 · high 5.26 · good 29.60 · good Poor
Thu 23:00 1.20 · high 5.11 · good 29.50 · good Poor
Fri 00:00 1.18 · high 5.31 · good 29.50 · good Poor
Fri 01:00 1.16 · high 6.17 · high 29.50 · good Poor
Fri 02:00 1.16 · high 5.38 · good 29.50 · good Poor
Fri 03:00 1.14 · high 5.40 · good 29.40 · good Poor
Fri 04:00 1.14 · high 4.35 · good 29.40 · good Poor
Fri 05:00 1.12 · high 4.76 · good 29.40 · good Poor
Fri 06:00 1.06 · high 4.32 · good 29.40 · good Poor
Fri 07:00 1.04 · high 4.35 · good 29.40 · good Fair
Fri 08:00 1.02 · high 4.60 · good 29.40 · good Fair
Fri 09:00 1.02 · high 3.84 · good 29.40 · good Fair
Fri 10:00 1.00 · high 3.94 · good 29.50 · good Fair
Fri 11:00 0.98 · high 3.77 · good 29.50 · good Fair
Fri 12:00 0.98 · high 4.03 · good 29.60 · good Fair
Fri 13:00 0.96 · high 3.23 · good 29.60 · good Fair
Fri 14:00 0.94 · high 3.21 · good 29.60 · good Fair
Fri 15:00 0.94 · high 2.81 · good 29.70 · good Fair
Fri 16:00 0.94 · high 2.32 · good 29.70 · good Fair
Fri 17:00 0.92 · high 2.41 · good 29.70 · good Fair
Fri 18:00 0.92 · high 2.30 · good 29.70 · good Fair
Fri 19:00 0.90 · high 3.02 · good 29.70 · good Poor
Fri 20:00 0.90 · high 3.05 · good 29.70 · good Poor
Fri 21:00 0.88 · high 3.73 · good 29.60 · good Poor
Fri 22:00 0.88 · high 3.36 · good 29.60 · good Poor