Can you snorkel in Railay today?

Yes. The next good snorkeling window in Railay starts Tue 09:00 and lasts until 11:00. Around 46% 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 Tue 15:16

Railay has a usable snorkeling window around Tue 16:00. The main thing to watch is sea temperature.

Score: 8.2/10

Best time: Tue 16:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Tue 16:00 (Excellent). Peak afternoon wind is about 3.5 m/s.

Email me when it is good

Sunrise

06:15

Sunset

18:46

Water

31.3°C

Max air

31.0°C

Sky

Clear

13% cloud

Good window is available today

Next safe window: Tue 09:00–11:00 (46% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Tuesday

✅ excellent conditions

Main blocker: Sea temperature

Wednesday

✅ good conditions

Main blocker: Sea temperature

Thursday

✅ excellent conditions

Main blocker: Sea temperature

Best available hours

Next safe window starts at Tue 09:00 until 11:00.

Why this verdict

Main blockers across the next 72 hours:

Sea temperature (67 hours)
Darkness (36 hours)
Waves (5 hours)

Jellyfish drift risk

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

Low · 27/100

Low peak drift risk around Tue 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

Wed 08:00 – Sat 08:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.75 around Thu 10:00; 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.

24/24 sampled hours stay at or below 0.36m (range 0.16m to 0.32m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.05 to 3.13m/s).

Tides range from -0.72m to 2.13m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Wed 08:00 good 🌟 Good

Wed 09:00 good 🌟 Good

Wed 10:00 good 🌟 Good

Wed 11:00 good 🌟 Good

Wed 12:00 poor ❌ Limited

Wed 13:00 poor ❌ Limited

Wed 14:00 poor ❌ Limited

Wed 15:00 poor ❌ Limited

Wed 16:00 poor ❌ Limited

Wed 17:00 poor ❌ Limited

Wed 18:00 poor ❌ Limited

Wed 19:00 poor ❌ Limited

Wed 20:00 poor ❌ Limited

Wed 21:00 poor ❌ Limited

Wed 22:00 poor ❌ Limited

Wed 23:00 poor ❌ Limited

Thu 00:00 good 🌟 Good

Thu 01:00 good 🌟 Good

Thu 02:00 good 🌟 Good

Thu 03:00 excellent ✅ Excellent

Thu 04:00 excellent ✅ Excellent

Thu 05:00 good 🌟 Good

Thu 06:00 good 🌟 Good

Thu 07:00 good 🌟 Good

Thu 08:00 good 🌟 Good

Thu 09:00 good 🌟 Good

Thu 10:00 good 🌟 Good

Thu 11:00 good 🌟 Good

Thu 12:00 poor ❌ Limited

Thu 13:00 poor ❌ Limited

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 poor ❌ Limited

Thu 23:00 poor ❌ Limited

Fri 00:00 excellent ✅ Excellent

Fri 01:00 excellent ✅ Excellent

Fri 02:00 excellent ✅ Excellent

Fri 03:00 good 🌟 Good

Fri 04:00 excellent ✅ Excellent

Fri 05:00 excellent ✅ Excellent

Fri 06:00 good 🌟 Good

Fri 07:00 good 🌟 Good

Fri 08:00 good 🌟 Good

Fri 09:00 good 🌟 Good

Fri 10:00 good 🌟 Good

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 good 🌟 Good

Sat 01:00 good 🌟 Good

Sat 02:00 good 🌟 Good

Sat 03:00 good 🌟 Good

Sat 04:00 good 🌟 Good

Sat 05:00 good 🌟 Good

Sat 06:00 excellent ✅ Excellent

Sat 07:00 excellent ✅ Excellent

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
Wed 08:00	0.30 · good	2.87 · good	30.50 · out of range	good
Wed 09:00	0.32 · good	2.84 · good	30.50 · out of range	good
Wed 10:00	0.30 · good	2.97 · good	30.50 · out of range	good
Wed 11:00	0.30 · good	2.56 · good	30.50 · out of range	good
Wed 12:00	0.28 · good	2.09 · good	30.50 · out of range	poor
Wed 13:00	0.28 · good	2.00 · good	30.50 · out of range	poor
Wed 14:00	0.26 · good	1.27 · good	30.50 · out of range	poor
Wed 15:00	0.26 · good	0.69 · good	30.50 · out of range	poor
Wed 16:00	0.24 · good	0.25 · good	30.40 · good	poor
Wed 17:00	0.24 · good	0.29 · good	30.40 · good	poor
Wed 18:00	0.22 · good	0.25 · good	30.40 · good	poor
Wed 19:00	0.22 · good	0.11 · good	30.40 · good	poor
Wed 20:00	0.20 · good	0.11 · good	30.40 · good	poor
Wed 21:00	0.20 · good	0.05 · good	30.40 · good	poor
Wed 22:00	0.20 · good	0.68 · good	30.40 · good	poor
Wed 23:00	0.18 · good	0.16 · good	30.40 · good	poor
Thu 00:00	0.18 · good	1.45 · good	30.40 · good	good
Thu 01:00	0.18 · good	1.59 · good	30.40 · good	good
Thu 02:00	0.16 · good	1.75 · good	30.50 · out of range	good
Thu 03:00	0.16 · good	1.63 · good	30.50 · out of range	excellent
Thu 04:00	0.16 · good	2.44 · good	30.60 · out of range	excellent
Thu 05:00	0.16 · good	2.65 · good	30.60 · out of range	good
Thu 06:00	0.16 · good	2.42 · good	30.70 · out of range	good
Thu 07:00	0.16 · good	3.13 · good	30.70 · out of range	good
Thu 08:00	0.14 · good	3.22 · good	30.70 · out of range	good
Thu 09:00	0.14 · good	3.36 · good	30.60 · out of range	good
Thu 10:00	0.16 · good	2.80 · good	30.60 · out of range	good
Thu 11:00	0.16 · good	2.55 · good	30.60 · out of range	good
Thu 12:00	0.18 · good	2.15 · good	30.60 · out of range	poor
Thu 13:00	0.18 · good	2.28 · good	30.60 · out of range	poor
Thu 14:00	0.18 · good	2.11 · good	30.60 · out of range	poor
Thu 15:00	0.18 · good	1.85 · good	30.60 · out of range	poor
Thu 16:00	0.18 · good	1.15 · good	30.50 · out of range	poor
Thu 17:00	0.18 · good	1.00 · good	30.50 · out of range	poor
Thu 18:00	0.18 · good	0.62 · good	30.50 · out of range	poor
Thu 19:00	0.18 · good	0.46 · good	30.50 · out of range	poor
Thu 20:00	0.16 · good	0.11 · good	30.50 · out of range	poor
Thu 21:00	0.16 · good	0.14 · good	30.50 · out of range	poor
Thu 22:00	0.16 · good	0.16 · good	30.40 · good	poor
Thu 23:00	0.14 · good	0.10 · good	30.40 · good	poor
Fri 00:00	0.14 · good	0.78 · good	30.40 · good	excellent
Fri 01:00	0.14 · good	0.18 · good	30.40 · good	excellent
Fri 02:00	0.14 · good	1.49 · good	30.40 · good	excellent
Fri 03:00	0.14 · good	2.66 · good	30.50 · out of range	good
Fri 04:00	0.16 · good	3.15 · good	30.50 · out of range	excellent
Fri 05:00	0.20 · good	3.31 · good	30.50 · out of range	excellent
Fri 06:00	0.22 · good	3.62 · good	30.50 · out of range	good
Fri 07:00	0.24 · good	3.43 · good	30.50 · out of range	good
Fri 08:00	0.28 · good	2.98 · good	30.60 · out of range	good
Fri 09:00	0.30 · good	2.74 · good	30.60 · out of range	good
Fri 10:00	0.28 · good	3.14 · good	30.60 · out of range	good
Fri 11:00	0.28 · good	2.88 · good	30.60 · out of range	good
Fri 12:00	0.26 · good	3.89 · good	30.60 · out of range	poor
Fri 13:00	0.24 · good	3.65 · good	30.60 · out of range	poor
Fri 14:00	0.22 · good	3.29 · good	30.60 · out of range	poor
Fri 15:00	0.20 · good	2.43 · good	30.50 · out of range	poor
Fri 16:00	0.18 · good	2.23 · good	30.50 · out of range	poor
Fri 17:00	0.18 · good	0.96 · good	30.50 · out of range	poor
Fri 18:00	0.16 · good	0.21 · good	30.50 · out of range	poor
Fri 19:00	0.16 · good	2.10 · good	30.50 · out of range	poor
Fri 20:00	0.16 · good	2.08 · good	30.40 · good	poor
Fri 21:00	0.16 · good	2.25 · good	30.40 · good	poor
Fri 22:00	0.16 · good	2.20 · good	30.40 · good	poor
Fri 23:00	0.18 · good	1.87 · good	30.40 · good	poor
Sat 00:00	0.18 · good	1.03 · good	30.40 · good	good
Sat 01:00	0.16 · good	1.69 · good	30.40 · good	good
Sat 02:00	0.16 · good	1.98 · good	30.40 · good	good
Sat 03:00	0.14 · good	3.02 · good	30.50 · out of range	good
Sat 04:00	0.16 · good	2.12 · good	30.50 · out of range	good
Sat 05:00	0.16 · good	2.79 · good	30.60 · out of range	good
Sat 06:00	0.12 · good	3.04 · good	31.10 · out of range	excellent
Sat 07:00	0.12 · good	3.44 · good	31.10 · out of range	excellent