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 Tue 04:14 (EST) · Source: Snapshot · Showing fallback/stale data

The skinny

Marginal Report Wed 09:02

Grand Cayman looks marginal today. The least-bad daylight window is around Thu 08:00, but waves is limiting the forecast.

Score: 4.8/10

Best time: Thu 08:00

Main risk: Waves

Best morning signal: Wed 10:00 (Fair).

Best afternoon signal: Wed 17:00 (Fair). Peak afternoon wind is about 4.0 m/s.

Email me when it is good

Sunrise

05:58

Sunset

19:04

Water

30.0°C

Max air

31.1°C

Sky

Clear

16% 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

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

⚠️ fair conditions

Main blocker: Waves

Best available hours

Thu 13:00 — Fair (0.48) · still limited by waves
Wed 15:00 — Fair (0.48) · still limited by waves, tide/current
Thu 15:00 — Fair (0.48) · still limited by waves

Why this verdict

Main blockers across the next 72 hours:

Waves (37 hours)
Tide/current (28 hours)
Darkness (15 hours)

Jellyfish drift risk

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

Low · 32/100

Low peak drift risk around Wed 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.

Nearby alternatives in Cayman Islands

Little Cayman

129 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Fri 14:00 – Mon 14:00 (EST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.33 around Sat 08:00; 0 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 0.98m to 1.08m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 9.8 to 17.5m/s).

Tides range from 0.4m to 0.62m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview

Fri 14:00 poor ❌ Limited

Fri 15:00 poor ❌ Limited

Fri 16:00 poor ❌ Limited

Fri 17:00 poor ❌ Limited

Fri 18:00 poor ❌ Limited

Fri 19:00 poor ❌ Limited

Fri 20:00 poor ❌ Limited

Fri 21:00 poor ❌ Limited

Fri 22:00 poor ❌ Limited

Fri 23:00 poor ❌ Limited

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 poor ❌ Limited

Sat 12:00 poor ❌ Limited

Sat 13:00 poor ❌ Limited

Sat 14:00 poor ❌ Limited

Sat 15:00 poor ❌ Limited

Sat 16:00 fair ⚠️ Fair

Sat 17:00 poor ❌ Limited

Sat 18:00 fair ⚠️ Fair

Sat 19:00 poor ❌ Limited

Sat 20:00 poor ❌ Limited

Sat 21:00 poor ❌ Limited

Sat 22:00 poor ❌ Limited

Sat 23:00 poor ❌ Limited

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 poor ❌ Limited

Sun 12:00 poor ❌ Limited

Sun 13:00 poor ❌ Limited

Sun 14:00 poor ❌ Limited

Sun 15:00 poor ❌ Limited

Sun 16:00 poor ❌ Limited

Sun 17:00 poor ❌ Limited

Sun 18:00 poor ❌ Limited

Sun 19:00 poor ❌ Limited

Sun 20:00 poor ❌ Limited

Sun 21:00 fair ⚠️ Fair

Sun 22:00 poor ❌ Limited

Sun 23:00 poor ❌ Limited

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

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
Fri 14:00	1.06 · high	13.40 · high	29.80 · good	poor
Fri 15:00	1.06 · high	14.80 · high	29.90 · good	poor
Fri 16:00	1.06 · high	17.10 · high	30.00 · good	poor
Fri 17:00	1.08 · high	17.50 · high	30.00 · good	poor
Fri 18:00	1.08 · high	16.60 · high	30.10 · good	poor
Fri 19:00	1.08 · high	15.50 · high	30.10 · good	poor
Fri 20:00	1.06 · high	14.40 · high	30.10 · good	poor
Fri 21:00	1.06 · high	12.80 · high	30.20 · good	poor
Fri 22:00	1.06 · high	11.40 · high	30.20 · good	poor
Fri 23:00	1.04 · high	10.60 · high	30.20 · good	poor
Sat 00:00	1.04 · high	11.80 · high	30.20 · good	poor
Sat 01:00	1.04 · high	12.40 · high	30.20 · good	poor
Sat 02:00	1.02 · high	12.40 · high	30.10 · good	poor
Sat 03:00	1.02 · high	12.00 · high	30.10 · good	poor
Sat 04:00	1.00 · high	12.70 · high	30.00 · good	poor
Sat 05:00	1.00 · high	13.30 · high	30.00 · good	poor
Sat 06:00	0.98 · high	10.70 · high	30.00 · good	poor
Sat 07:00	0.98 · high	9.80 · high	29.90 · good	poor
Sat 08:00	1.00 · high	11.00 · high	29.90 · good	poor
Sat 09:00	1.00 · high	11.90 · high	29.90 · good	poor
Sat 10:00	1.00 · high	11.30 · high	29.80 · good	poor
Sat 11:00	1.02 · high	12.10 · high	29.80 · good	poor
Sat 12:00	1.02 · high	11.50 · high	29.80 · good	poor
Sat 13:00	1.02 · high	10.60 · high	29.90 · good	poor
Sat 14:00	1.02 · high	11.20 · high	29.90 · good	poor
Sat 15:00	1.02 · high	10.20 · high	30.00 · good	poor
Sat 16:00	1.02 · high	9.70 · high	30.10 · good	fair
Sat 17:00	1.00 · high	9.00 · high	30.20 · good	poor
Sat 18:00	1.00 · high	9.50 · high	30.30 · good	fair
Sat 19:00	1.00 · high	9.00 · high	30.30 · good	poor
Sat 20:00	0.98 · high	11.00 · high	30.40 · good	poor
Sat 21:00	0.98 · high	11.40 · high	30.40 · good	poor
Sat 22:00	0.98 · high	10.60 · high	30.40 · good	poor
Sat 23:00	0.98 · high	12.30 · high	30.40 · good	poor
Sun 00:00	0.98 · high	13.10 · high	30.40 · good	poor
Sun 01:00	0.98 · high	14.00 · high	30.40 · good	poor
Sun 02:00	0.96 · high	12.90 · high	30.30 · good	poor
Sun 03:00	0.96 · high	11.30 · high	30.30 · good	poor
Sun 04:00	0.94 · high	10.70 · high	30.20 · good	poor
Sun 05:00	0.94 · high	10.30 · high	30.10 · good	poor
Sun 06:00	0.92 · high	12.00 · high	30.10 · good	poor
Sun 07:00	0.92 · high	11.60 · high	30.00 · good	poor
Sun 08:00	0.90 · high	12.20 · high	30.00 · good	poor
Sun 09:00	0.90 · high	13.80 · high	29.90 · good	poor
Sun 10:00	0.90 · high	14.20 · high	29.90 · good	poor
Sun 11:00	0.88 · high	15.30 · high	29.90 · good	poor
Sun 12:00	0.88 · high	15.00 · high	29.90 · good	poor
Sun 13:00	0.88 · high	14.50 · high	29.90 · good	poor
Sun 14:00	0.88 · high	15.40 · high	30.00 · good	poor
Sun 15:00	0.88 · high	16.70 · high	30.00 · good	poor
Sun 16:00	0.88 · high	20.00 · high	30.10 · good	poor
Sun 17:00	0.90 · high	19.90 · high	30.20 · good	poor
Sun 18:00	0.90 · high	19.50 · high	30.20 · good	poor
Sun 19:00	0.92 · high	16.40 · high	30.30 · good	poor
Sun 20:00	0.92 · high	10.40 · high	30.30 · good	poor
Sun 21:00	0.94 · high	9.50 · high	30.30 · good	fair
Sun 22:00	0.94 · high	10.10 · high	30.30 · good	poor
Sun 23:00	0.92 · high	11.30 · high	30.30 · good	poor
Mon 00:00	0.92 · high	11.60 · high	30.30 · good	poor
Mon 01:00	0.92 · high	12.80 · high	30.20 · good	poor
Mon 02:00	0.94 · high	13.30 · high	30.20 · good	poor
Mon 03:00	0.94 · high	19.50 · high	30.20 · good	poor
Mon 04:00	0.96 · high	18.30 · high	30.10 · good	poor
Mon 05:00	0.96 · high	17.10 · high	30.10 · good	poor
Mon 06:00	0.98 · high	14.50 · high	30.00 · good	poor
Mon 07:00	0.98 · high	14.50 · high	30.00 · good	poor
Mon 08:00	0.96 · high	16.00 · high	30.00 · good	poor
Mon 09:00	0.96 · high	17.10 · high	29.90 · good	poor
Mon 10:00	0.98 · high	2.00 · good	29.80 · good	poor
Mon 11:00	1.00 · high	2.39 · good	29.80 · good	fair
Mon 12:00	1.00 · high	2.35 · good	29.80 · good	fair
Mon 13:00	1.02 · high	2.92 · good	29.80 · good	fair