Can you snorkel in Railay today?

Yes. The next good snorkeling window in Railay starts Wed 03:00 and lasts until 11:00. Around 51% of the next 72 hours are suitable.

What is the best time of day to snorkel in Railay?

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 Railay 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.

Railay Snorkel Report Today

Thailand · Updated Tue 04:15 (+07) · Source: Snapshot

The skinny

Go in the best window Report Wed 09:10

Railay has a usable snorkeling window around Wed 10:00. The main thing to watch is sea temperature.

Score: 7.3/10

Best time: Wed 10:00

Main risk: Sea Temperature

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

Best afternoon signal: Wed 12:00 (Good). Peak afternoon wind is about 5.3 m/s.

Email me when it is good

Sunrise

06:15

Sunset

18:46

Water

31.1°C

Max air

31.5°C

Sky

Clear

23% cloud

Good window is available today

Next safe window: Wed 03:00–11:00 (51% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

✅ good conditions

Main blocker: Sea temperature

Thursday

✅ excellent conditions

Main blocker: Sea temperature

Friday

✅ excellent conditions

Main blocker: Sea temperature

Best available hours

Next safe window starts at Wed 03:00 until 11:00.

Why this verdict

Main blockers across the next 72 hours:

Sea temperature (49 hours)
Darkness (24 hours)
Waves (5 hours)

Jellyfish drift risk

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

Low · 27/100

Low peak drift risk around Wed 17:00.

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

Next early morning high tide: Wed 22:00

Wed 09:00, Wed 22:00, Thu 10:00, Thu 23:00

Nearby alternatives in Thailand

Koh Phi Phi

31 km away

✅ Good

Koh Kradan

94 km away

✅ Good

Similan Islands

149 km away

⚠️ Fair

Koh Lipe

177 km away

✅ Good

Advanced forecast data

Viewing historical data

Fri 02:00 – Mon 02:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.56 around Fri 18:00; 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 0.48m to 0.6m).

Wind is at or below 5.4m/s in 15/24 sampled hours (range 4.33 to 6.16m/s).

Tides range from -0.12m to 1.49m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Fri 02:00 fair ⚠️ Fair

Fri 03:00 fair ⚠️ Fair

Fri 04:00 fair ⚠️ Fair

Fri 05:00 fair ⚠️ Fair

Fri 06:00 fair ⚠️ Fair

Fri 07:00 fair ⚠️ Fair

Fri 08:00 fair ⚠️ Fair

Fri 09:00 fair ⚠️ Fair

Fri 10:00 fair ⚠️ Fair

Fri 11:00 good 🌟 Good

Fri 12:00 poor ❌ Limited

Fri 13:00 poor ❌ Limited

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 fair ⚠️ Fair

Sat 01:00 fair ⚠️ Fair

Sat 02:00 fair ⚠️ Fair

Sat 03:00 fair ⚠️ Fair

Sat 04:00 fair ⚠️ Fair

Sat 05:00 fair ⚠️ Fair

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 poor ❌ Limited

Sat 13:00 poor ❌ Limited

Sat 14:00 poor ❌ Limited

Sat 15:00 poor ❌ Limited

Sat 16:00 poor ❌ Limited

Sat 17:00 poor ❌ Limited

Sat 18:00 poor ❌ Limited

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 fair ⚠️ Fair

Sun 01:00 fair ⚠️ Fair

Sun 02:00 fair ⚠️ Fair

Sun 03:00 fair ⚠️ Fair

Sun 04:00 fair ⚠️ Fair

Sun 05:00 fair ⚠️ Fair

Sun 06:00 fair ⚠️ Fair

Sun 07:00 fair ⚠️ Fair

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 poor ❌ Limited

Sun 22:00 poor ❌ Limited

Sun 23:00 poor ❌ Limited

Mon 00:00 fair ⚠️ Fair

Mon 01:00 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 02:00	0.50 · high	5.06 · good	30.50 · out of range	fair
Fri 03:00	0.52 · high	5.30 · good	30.60 · out of range	fair
Fri 04:00	0.54 · high	5.65 · high	30.60 · out of range	fair
Fri 05:00	0.54 · high	6.10 · high	30.70 · out of range	fair
Fri 06:00	0.56 · high	6.16 · high	30.70 · out of range	fair
Fri 07:00	0.56 · high	6.06 · high	30.70 · out of range	fair
Fri 08:00	0.58 · high	5.66 · high	30.80 · out of range	fair
Fri 09:00	0.58 · high	5.56 · high	30.80 · out of range	fair
Fri 10:00	0.58 · high	5.56 · high	30.70 · out of range	fair
Fri 11:00	0.56 · high	5.69 · high	30.70 · out of range	good
Fri 12:00	0.56 · high	5.57 · high	30.70 · out of range	poor
Fri 13:00	0.54 · high	4.96 · good	30.70 · out of range	poor
Fri 14:00	0.50 · high	4.63 · good	30.70 · out of range	poor
Fri 15:00	0.48 · high	4.71 · good	30.70 · out of range	poor
Fri 16:00	0.48 · high	4.56 · good	30.70 · out of range	poor
Fri 17:00	0.48 · high	4.43 · good	30.60 · out of range	poor
Fri 18:00	0.48 · high	4.33 · good	30.60 · out of range	poor
Fri 19:00	0.50 · high	4.37 · good	30.60 · out of range	poor
Fri 20:00	0.50 · high	4.53 · good	30.60 · out of range	poor
Fri 21:00	0.52 · high	4.69 · good	30.50 · out of range	poor
Fri 22:00	0.54 · high	4.96 · good	30.50 · out of range	poor
Fri 23:00	0.56 · high	5.06 · good	30.50 · out of range	poor
Sat 00:00	0.58 · high	5.16 · good	30.50 · out of range	fair
Sat 01:00	0.60 · high	5.30 · good	30.50 · out of range	fair
Sat 02:00	0.60 · high	4.96 · good	30.50 · out of range	fair
Sat 03:00	0.62 · high	5.05 · good	30.50 · out of range	fair
Sat 04:00	0.64 · high	5.33 · good	30.60 · out of range	fair
Sat 05:00	0.68 · high	5.84 · high	30.60 · out of range	fair
Sat 06:00	0.70 · high	5.93 · high	30.60 · out of range	poor
Sat 07:00	0.70 · high	6.17 · high	30.60 · out of range	poor
Sat 08:00	0.70 · high	6.36 · high	30.60 · out of range	poor
Sat 09:00	0.70 · high	6.33 · high	30.60 · out of range	poor
Sat 10:00	0.70 · high	6.02 · high	30.60 · out of range	poor
Sat 11:00	0.72 · high	4.96 · good	30.60 · out of range	fair
Sat 12:00	0.72 · high	4.68 · good	30.60 · out of range	poor
Sat 13:00	0.68 · high	4.62 · good	30.60 · out of range	poor
Sat 14:00	0.64 · high	5.19 · good	30.60 · out of range	poor
Sat 15:00	0.60 · high	4.59 · good	30.60 · out of range	poor
Sat 16:00	0.56 · high	5.67 · high	30.60 · out of range	poor
Sat 17:00	0.54 · high	5.65 · high	30.50 · out of range	poor
Sat 18:00	0.50 · high	2.91 · good	30.50 · out of range	poor
Sat 19:00	0.50 · high	4.21 · good	30.50 · out of range	poor
Sat 20:00	0.52 · high	4.10 · good	30.50 · out of range	poor
Sat 21:00	0.52 · high	2.67 · good	30.40 · good	poor
Sat 22:00	0.52 · high	5.51 · high	30.40 · good	poor
Sat 23:00	0.52 · high	7.72 · high	30.30 · good	poor
Sun 00:00	0.52 · high	5.43 · high	30.30 · good	fair
Sun 01:00	0.56 · high	4.61 · good	30.30 · good	fair
Sun 02:00	0.58 · high	6.19 · high	30.30 · good	fair
Sun 03:00	0.62 · high	6.91 · high	30.40 · good	fair
Sun 04:00	0.62 · high	4.85 · good	30.40 · good	fair
Sun 05:00	0.64 · high	3.64 · good	30.40 · good	fair
Sun 06:00	0.64 · high	3.85 · good	30.40 · good	fair
Sun 07:00	0.60 · high	4.30 · good	30.40 · good	fair
Sun 08:00	0.86 · high	6.91 · high	30.50 · out of range	poor
Sun 09:00	0.88 · high	7.10 · high	30.50 · out of range	poor
Sun 10:00	0.84 · high	6.46 · high	30.50 · out of range	poor
Sun 11:00	0.82 · high	5.56 · high	30.50 · out of range	poor
Sun 12:00	0.78 · high	4.83 · good	30.50 · out of range	poor
Sun 13:00	0.74 · high	5.05 · good	30.50 · out of range	poor
Sun 14:00	0.68 · high	4.65 · good	30.40 · good	poor
Sun 15:00	0.64 · high	4.55 · good	30.40 · good	poor
Sun 16:00	0.64 · high	5.03 · good	30.40 · good	poor
Sun 17:00	0.62 · high	4.11 · good	30.30 · good	poor
Sun 18:00	0.62 · high	4.51 · good	30.30 · good	poor
Sun 19:00	0.60 · high	3.25 · good	30.30 · good	poor
Sun 20:00	0.58 · high	4.55 · good	30.30 · good	poor
Sun 21:00	0.56 · high	4.07 · good	30.30 · good	poor
Sun 22:00	0.52 · high	3.04 · good	30.20 · good	poor
Sun 23:00	0.48 · high	2.76 · good	30.20 · good	poor
Mon 00:00	0.44 · high	3.56 · good	30.20 · good	fair
Mon 01:00	0.42 · high	4.93 · good	30.20 · good	fair