Can you snorkel in Grand Cayman today?

Conditions look marginal right now — no clearly safe snorkeling window is forecast in Grand Cayman over the next 72 hours. Check the hourly table for the calmest period.

What is the best time of day to snorkel in Grand Cayman?

Snorkel during daylight, ideally in the morning before the wind picks up, and around high slack tide when water is clearest and currents are weakest. SnorkelForecast scores every daylight hour in Grand Cayman so you can pick the calmest window.

What is the best tide for snorkeling?

High slack tide — within about an hour of the high-tide peak when currents are weakest — is the safest, clearest window. Strong low tides, strong tidal flow near channels or headlands, and large tidal-range days reduce score.

Grand Cayman Snorkel Report Today

Cayman Islands · Updated Sat 05:02 (EST) · Source: Snapshot

The skinny

Marginal Report Sat 15:51

Grand Cayman looks marginal today. The least-bad daylight window is around Mon 11:00, but waves is limiting the forecast.

Score: 5.0/10

Best time: Mon 11:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Sat 18:00 (Fair). Peak afternoon wind is about 3.5 m/s.

Email me when it is good

Sunrise

05:56

Sunset

19:05

Water

30.2°C

Max air

30.6°C

Sky

Cloudy

98% 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

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 (0.52) · still limited by waves
Sun 20:00 — Fair (0.50) · still limited by waves
Mon 13:00 — Fair (0.50) · still limited by waves

Why this verdict

Main blockers across the next 72 hours:

Waves (56 hours)
Tide/current (28 hours)
Darkness (27 hours)

Jellyfish drift risk

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

Low · 29/100

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

Sun 19:00

Nearby alternatives in Cayman Islands

Little Cayman

129 km away

❌ Poor

Advanced forecast data

Viewing live forecast

Sat 20:00 – Tue 20:00 (EST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.5 around Sun 15:00; 13 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 1.04m to 1.18m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.05 to 4.7m/s).

Tides range from 0.51m to 0.73m; 1 of 24 hours are in or near peak slack windows.

72-hour forecast overview

Sat 21:00 fair ⚠️ Fair

Sat 22:00 fair ⚠️ Fair

Sat 23:00 fair ⚠️ Fair

Sun 00:00 poor ❌ Limited

Sun 01:00 poor ❌ Limited

Sun 02:00 poor ❌ Limited

Sun 03:00 poor ❌ Limited

Sun 04:00 poor ❌ Limited

Sun 05:00 poor ❌ Limited

Sun 06:00 poor ❌ Limited

Sun 07:00 poor ❌ Limited

Sun 08:00 poor ❌ Limited

Sun 09:00 poor ❌ Limited

Sun 10:00 poor ❌ Limited

Sun 11:00 fair ⚠️ Fair

Sun 12:00 fair ⚠️ Fair

Sun 13:00 fair ⚠️ Fair

Sun 14:00 fair ⚠️ Fair

Sun 15:00 fair ⚠️ Fair

Sun 16:00 fair ⚠️ Fair

Sun 17:00 fair ⚠️ Fair

Sun 18:00 fair ⚠️ Fair

Sun 19:00 fair ⚠️ Fair

Sun 20:00 fair ⚠️ Fair

Sun 21:00 fair ⚠️ Fair

Sun 22:00 fair ⚠️ Fair

Sun 23:00 fair ⚠️ Fair

Mon 00:00 poor ❌ Limited

Mon 01:00 poor ❌ Limited

Mon 02:00 poor ❌ Limited

Mon 03:00 poor ❌ Limited

Mon 04:00 poor ❌ Limited

Mon 05:00 poor ❌ Limited

Mon 06:00 poor ❌ Limited

Mon 07:00 poor ❌ Limited

Mon 08:00 poor ❌ Limited

Mon 09:00 poor ❌ Limited

Mon 10:00 poor ❌ Limited

Mon 11:00 fair ⚠️ Fair

Mon 12:00 fair ⚠️ Fair

Mon 13:00 fair ⚠️ Fair

Mon 14:00 fair ⚠️ Fair

Mon 15:00 fair ⚠️ Fair

Mon 16:00 fair ⚠️ Fair

Mon 17:00 fair ⚠️ Fair

Mon 18:00 fair ⚠️ Fair

Mon 19:00 fair ⚠️ Fair

Mon 20:00 fair ⚠️ Fair

Mon 21:00 fair ⚠️ Fair

Mon 22:00 fair ⚠️ Fair

Mon 23:00 fair ⚠️ Fair

Tue 00:00 poor ❌ Limited

Tue 01:00 poor ❌ Limited

Tue 02:00 poor ❌ Limited

Tue 03:00 poor ❌ Limited

Tue 04:00 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
Sat 21:00	1.18 · high	3.46 · good	30.20 · good	fair
Sat 22:00	1.18 · high	3.26 · good	30.20 · good	fair
Sat 23:00	1.18 · high	3.02 · good	30.20 · good	fair
Sun 00:00	1.18 · high	2.87 · good	30.20 · good	poor
Sun 01:00	1.18 · high	2.88 · good	30.20 · good	poor
Sun 02:00	1.18 · high	2.67 · good	30.10 · good	poor
Sun 03:00	1.18 · high	2.55 · good	30.10 · good	poor
Sun 04:00	1.18 · high	2.37 · good	30.00 · good	poor
Sun 05:00	1.16 · high	2.19 · good	30.00 · good	poor
Sun 06:00	1.16 · high	2.46 · good	30.00 · good	poor
Sun 07:00	1.16 · high	2.85 · good	29.90 · good	poor
Sun 08:00	1.14 · high	2.79 · good	29.90 · good	poor
Sun 09:00	1.14 · high	2.49 · good	29.90 · good	poor
Sun 10:00	1.14 · high	2.64 · good	29.80 · good	poor
Sun 11:00	1.12 · high	2.42 · good	29.80 · good	fair
Sun 12:00	1.12 · high	2.05 · good	29.80 · good	fair
Sun 13:00	1.10 · high	4.70 · good	29.90 · good	fair
Sun 14:00	1.10 · high	2.06 · good	30.00 · good	fair
Sun 15:00	1.08 · high	2.10 · good	30.10 · good	fair
Sun 16:00	1.08 · high	2.69 · good	30.20 · good	fair
Sun 17:00	1.06 · high	3.12 · good	30.30 · good	fair
Sun 18:00	1.06 · high	3.29 · good	30.30 · good	fair
Sun 19:00	1.06 · high	3.57 · good	30.30 · good	fair
Sun 20:00	1.04 · high	3.63 · good	30.30 · good	fair
Sun 21:00	1.04 · high	3.49 · good	30.30 · good	fair
Sun 22:00	1.04 · high	3.25 · good	30.30 · good	fair
Sun 23:00	1.02 · high	3.07 · good	30.30 · good	fair
Mon 00:00	1.02 · high	2.93 · good	30.20 · good	poor
Mon 01:00	1.00 · high	3.04 · good	30.20 · good	poor
Mon 02:00	1.00 · high	3.04 · good	30.20 · good	poor
Mon 03:00	0.98 · high	2.93 · good	30.10 · good	poor
Mon 04:00	0.98 · high	2.71 · good	30.10 · good	poor
Mon 05:00	0.96 · high	2.89 · good	30.10 · good	poor
Mon 06:00	0.96 · high	3.13 · good	30.00 · good	poor
Mon 07:00	0.96 · high	2.69 · good	30.00 · good	poor
Mon 08:00	0.94 · high	1.71 · good	30.00 · good	poor
Mon 09:00	0.94 · high	1.62 · good	29.90 · good	poor
Mon 10:00	0.94 · high	2.54 · good	29.90 · good	poor
Mon 11:00	0.94 · high	3.05 · good	29.90 · good	fair
Mon 12:00	0.94 · high	3.62 · good	29.90 · good	fair
Mon 13:00	0.94 · high	3.79 · good	29.90 · good	fair
Mon 14:00	0.94 · high	3.80 · good	30.00 · good	fair
Mon 15:00	0.94 · high	4.26 · good	30.00 · good	fair
Mon 16:00	0.94 · high	3.70 · good	30.10 · good	fair
Mon 17:00	0.96 · high	4.32 · good	30.10 · good	fair
Mon 18:00	0.96 · high	3.48 · good	30.20 · good	fair
Mon 19:00	0.96 · high	4.09 · good	30.20 · good	fair
Mon 20:00	0.96 · high	3.98 · good	30.20 · good	fair
Mon 21:00	0.96 · high	4.23 · good	30.20 · good	fair
Mon 22:00	0.96 · high	4.20 · good	30.20 · good	fair
Mon 23:00	0.94 · high	4.70 · good	30.20 · good	fair
Tue 00:00	0.94 · high	4.68 · good	30.20 · good	poor
Tue 01:00	0.92 · high	4.56 · good	30.20 · good	poor
Tue 02:00	0.92 · high	4.07 · good	30.10 · good	poor
Tue 03:00	0.90 · high	3.86 · good	30.10 · good	poor
Tue 04:00	0.90 · high	3.83 · good	30.00 · good	poor