SnorkelForecast.com

Railay Snorkel Report Today

Thailand · Updated Tue 04:15 (+07) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Wed 17:28

Railay has a usable snorkeling window around Wed 18:00. The main thing to watch is sea temperature.

Score: 7.6/10

Best time: Wed 18:00

Main risk: Sea Temperature

No useful morning window is showing yet.

Best afternoon signal: Wed 18:00 (Good). Peak afternoon wind is about 4.2 m/s.

Email me when it is good

Sunrise

06:15

Sunset

18:46

Water

31.2°C

Max air

29.6°C

Sky

Partly cloudy

46% cloud

Good window is available today

Next safe window: Wed 11:00 (41% 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 11:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (41 hours)
  • Darkness (24 hours)
  • Waves (4 hours)

Jellyfish drift risk

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

Low · 27/100

Low drift risk now.

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 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

Sun 10:00 – Wed 10:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.55 around Mon 14:00; 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 0.26m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.7 to 15.8m/s).

Tides range from -0.46m to 1.46m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
good 🌟 Good
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
Sun 10:00 0.26 · good 11.70 · high 30.20 · good fair
Sun 11:00 0.24 · good 8.30 · high 30.20 · good fair
Sun 12:00 0.22 · good 6.70 · high 30.20 · good poor
Sun 13:00 0.22 · good 8.00 · high 30.20 · good poor
Sun 14:00 0.20 · good 8.10 · high 30.20 · good poor
Sun 15:00 0.20 · good 8.00 · high 30.20 · good poor
Sun 16:00 0.20 · good 7.30 · high 30.20 · good poor
Sun 17:00 0.20 · good 7.60 · high 30.20 · good poor
Sun 18:00 0.20 · good 7.80 · high 30.20 · good poor
Sun 19:00 0.20 · good 7.90 · high 30.20 · good poor
Sun 20:00 0.22 · good 9.50 · high 30.10 · good poor
Sun 21:00 0.22 · good 10.80 · high 30.10 · good poor
Sun 22:00 0.20 · good 10.70 · high 30.10 · good poor
Sun 23:00 0.20 · good 8.90 · high 30.10 · good poor
Mon 00:00 0.18 · good 9.50 · high 30.10 · good fair
Mon 01:00 0.18 · good 10.90 · high 30.10 · good fair
Mon 02:00 0.16 · good 12.20 · high 30.20 · good fair
Mon 03:00 0.16 · good 12.20 · high 30.20 · good fair
Mon 04:00 0.16 · good 13.70 · high 30.30 · good fair
Mon 05:00 0.16 · good 14.80 · high 30.30 · good fair
Mon 06:00 0.16 · good 14.70 · high 30.40 · good fair
Mon 07:00 0.16 · good 14.30 · high 30.40 · good fair
Mon 08:00 0.18 · good 14.90 · high 30.40 · good fair
Mon 09:00 0.18 · good 15.80 · high 30.40 · good fair
Mon 10:00 0.26 · good 2.71 · good 30.60 · out of range good
Mon 11:00 0.26 · good 2.37 · good 30.60 · out of range good
Mon 12:00 0.26 · good 1.97 · good 30.60 · out of range poor
Mon 13:00 0.24 · good 2.33 · good 30.60 · out of range poor
Mon 14:00 0.24 · good 2.15 · good 30.60 · out of range poor
Mon 15:00 0.22 · good 2.26 · good 30.60 · out of range poor
Mon 16:00 0.22 · good 2.12 · good 30.60 · out of range poor
Mon 17:00 0.20 · good 2.06 · good 30.50 · out of range poor
Mon 18:00 0.20 · good 2.51 · good 30.50 · out of range poor
Mon 19:00 0.20 · good 2.42 · good 30.50 · out of range poor
Mon 20:00 0.20 · good 2.38 · good 30.50 · out of range poor
Mon 21:00 0.20 · good 2.03 · good 30.50 · out of range poor
Mon 22:00 0.22 · good 3.11 · good 30.40 · good poor
Mon 23:00 0.24 · good 1.59 · good 30.40 · good poor
Tue 00:00 0.26 · good 1.70 · good 30.40 · good good
Tue 01:00 0.28 · good 2.58 · good 30.40 · good good
Tue 02:00 0.32 · good 3.05 · good 30.50 · out of range good
Tue 03:00 0.34 · good 3.27 · good 30.50 · out of range good
Tue 04:00 0.36 · good 3.39 · good 30.60 · out of range good
Tue 05:00 0.36 · good 3.73 · good 30.60 · out of range good
Tue 06:00 0.38 · high 4.10 · good 30.60 · out of range good
Tue 07:00 0.40 · high 4.12 · good 30.60 · out of range good
Tue 08:00 0.44 · high 4.44 · good 30.60 · out of range good
Tue 09:00 0.46 · high 4.57 · good 30.60 · out of range good
Tue 10:00 0.46 · high 4.20 · good 30.60 · out of range fair
Tue 11:00 0.44 · high 3.87 · good 30.60 · out of range fair
Tue 12:00 0.44 · high 3.67 · good 30.60 · out of range poor
Tue 13:00 0.44 · high 4.29 · good 30.60 · out of range poor
Tue 14:00 0.42 · high 4.14 · good 30.60 · out of range poor
Tue 15:00 0.42 · high 3.82 · good 30.60 · out of range poor
Tue 16:00 0.44 · high 3.70 · good 30.60 · out of range poor
Tue 17:00 0.44 · high 3.65 · good 30.50 · out of range poor
Tue 18:00 0.46 · high 3.50 · good 30.50 · out of range poor
Tue 19:00 0.46 · high 4.11 · good 30.50 · out of range poor
Tue 20:00 0.48 · high 4.25 · good 30.50 · out of range poor
Tue 21:00 0.48 · high 3.89 · good 30.40 · good poor
Tue 22:00 0.48 · high 3.86 · good 30.40 · good poor
Tue 23:00 0.50 · high 3.96 · good 30.40 · good poor
Wed 00:00 0.50 · high 4.07 · good 30.40 · good fair
Wed 01:00 0.50 · high 4.26 · good 30.40 · good fair
Wed 02:00 0.50 · high 4.77 · good 30.40 · good fair
Wed 03:00 0.50 · high 5.05 · good 30.50 · out of range fair
Wed 04:00 0.52 · high 4.95 · good 30.50 · out of range good
Wed 05:00 0.54 · high 5.16 · good 30.50 · out of range good
Wed 06:00 0.56 · high 5.64 · high 30.60 · out of range fair
Wed 07:00 0.56 · high 5.92 · high 30.60 · out of range fair
Wed 08:00 0.58 · high 5.80 · high 30.60 · out of range fair
Wed 09:00 0.58 · high 5.64 · high 30.60 · out of range fair