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 · Showing fallback/stale data

The skinny

Marginal Report Sun 09:46

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

Best morning signal: Sun 11:00 (Fair).

Best afternoon signal: Sun 15:00 (Fair). Peak afternoon wind is about 3.6 m/s.

Email me when it is good

Sunrise

05:57

Sunset

19:05

Water

30.1°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

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 (38 hours)
Darkness (16 hours)
Tide/current (12 hours)

Jellyfish drift risk

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

Low · 27/100

Low peak drift risk around Sun 15:00.

warm water supports seasonal jellyfish activity; 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

⚠️ Fair

Advanced forecast data

Viewing historical data

Thu 14:00 – Sun 14:00 (EST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.48 around Fri 06:00; 4 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 1.3m to 1.6m).

Wind is at or below 5.4m/s in 11/24 sampled hours (range 3.83 to 7.46m/s).

Tides range from 0.53m to 0.79m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview

Thu 14:00 poor ❌ Limited

Thu 15:00 poor ❌ Limited

Thu 16:00 poor ❌ Limited

Thu 17:00 poor ❌ Limited

Thu 18:00 poor ❌ Limited

Thu 19:00 poor ❌ Limited

Thu 20:00 poor ❌ Limited

Thu 21:00 poor ❌ Limited

Thu 22:00 fair ⚠️ Fair

Thu 23:00 poor ❌ Limited

Fri 00:00 poor ❌ Limited

Fri 01:00 poor ❌ Limited

Fri 02:00 poor ❌ Limited

Fri 03:00 poor ❌ Limited

Fri 04:00 poor ❌ Limited

Fri 05:00 poor ❌ Limited

Fri 06:00 poor ❌ Limited

Fri 07:00 poor ❌ Limited

Fri 08:00 poor ❌ Limited

Fri 09:00 poor ❌ Limited

Fri 10:00 poor ❌ Limited

Fri 11:00 fair ⚠️ Fair

Fri 12:00 fair ⚠️ Fair

Fri 13:00 fair ⚠️ Fair

Fri 14:00 poor ❌ Limited

Fri 15:00 poor ❌ Limited

Fri 16:00 poor ❌ Limited

Fri 17:00 poor ❌ Limited

Fri 18:00 fair ⚠️ Fair

Fri 19:00 fair ⚠️ Fair

Fri 20:00 poor ❌ Limited

Fri 21:00 fair ⚠️ Fair

Fri 22:00 fair ⚠️ Fair

Fri 23:00 fair ⚠️ Fair

Sat 00:00 poor ❌ Limited

Sat 01:00 poor ❌ Limited

Sat 02:00 poor ❌ Limited

Sat 03:00 poor ❌ Limited

Sat 04:00 poor ❌ Limited

Sat 05:00 poor ❌ Limited

Sat 06:00 poor ❌ Limited

Sat 07:00 poor ❌ Limited

Sat 08:00 poor ❌ Limited

Sat 09:00 poor ❌ Limited

Sat 10:00 poor ❌ Limited

Sat 11:00 fair ⚠️ Fair

Sat 12:00 fair ⚠️ Fair

Sat 13:00 fair ⚠️ Fair

Sat 14:00 fair ⚠️ Fair

Sat 15:00 fair ⚠️ Fair

Sat 16:00 fair ⚠️ Fair

Sat 17:00 fair ⚠️ Fair

Sat 18:00 fair ⚠️ Fair

Sat 19:00 fair ⚠️ Fair

Sat 20:00 fair ⚠️ Fair

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

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
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
Sat 09:00	1.26 · high	4.58 · good	29.80 · good	poor
Sat 10:00	1.26 · high	2.34 · good	29.80 · good	poor
Sat 11:00	1.24 · high	2.69 · good	29.80 · good	fair
Sat 12:00	1.24 · high	3.73 · good	29.80 · good	fair
Sat 13:00	1.22 · high	3.57 · good	29.80 · good	fair
Sat 14:00	1.22 · high	3.31 · good	29.90 · good	fair
Sat 15:00	1.20 · high	3.39 · good	29.90 · good	fair
Sat 16:00	1.20 · high	3.54 · good	30.00 · good	fair
Sat 17:00	1.18 · high	3.74 · good	30.10 · good	fair
Sat 18:00	1.18 · high	3.83 · good	30.10 · good	fair
Sat 19:00	1.18 · high	3.80 · good	30.20 · good	fair
Sat 20:00	1.18 · high	3.65 · good	30.20 · good	fair
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