SnorkelForecast.com

Railay Snorkel Report Today

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

The skinny

Go in the best window Report Wed 07:27

Railay has a usable snorkeling window around Wed 08:00. The main thing to watch is sea temperature.

Score: 7.3/10

Best time: Wed 08:00

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

31.0°C

Max air

31.5°C

Sky

Partly cloudy

33% cloud

Good window is available today

Next safe window: Wed 01:00–11:00 (53% 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 01:00 until 11:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (51 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

Sat 00:00 – Tue 00:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.48 around Sat 07:00; 7 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 0.5m to 0.72m).

Wind is at or below 5.4m/s in 14/24 sampled hours (range 2.67 to 7.72m/s).

Tides range from -0.12m to 1.49m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
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
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
Mon 02:00 0.38 · high 4.58 · good 30.20 · good good
Mon 03:00 0.36 · good 3.61 · good 30.20 · good good
Mon 04:00 0.34 · good 4.52 · good 30.20 · good fair
Mon 05:00 0.32 · good 5.31 · good 30.20 · good fair
Mon 06:00 0.30 · good 4.81 · good 30.20 · good fair
Mon 07:00 0.30 · good 5.10 · good 30.20 · good fair
Mon 08:00 0.32 · good 4.71 · good 30.20 · good fair
Mon 09:00 0.32 · good 4.77 · good 30.20 · good fair
Mon 10:00 0.36 · good 3.97 · good 30.20 · good fair
Mon 11:00 0.38 · high 3.25 · good 30.20 · good fair
Mon 12:00 0.42 · high 2.21 · good 30.20 · good poor
Mon 13:00 0.44 · high 2.73 · good 30.20 · good poor
Mon 14:00 0.44 · high 3.54 · good 30.20 · good poor
Mon 15:00 0.46 · high 3.99 · good 30.20 · good poor
Mon 16:00 0.46 · high 3.16 · good 30.10 · good poor
Mon 17:00 0.46 · high 2.45 · good 30.10 · good poor
Mon 18:00 0.46 · high 3.73 · good 30.10 · good poor
Mon 19:00 0.42 · high 1.00 · good 30.10 · good poor
Mon 20:00 0.40 · high 1.53 · good 30.00 · good poor
Mon 21:00 0.36 · good 1.20 · good 30.00 · good poor
Mon 22:00 0.34 · good 1.95 · good 30.00 · good poor
Mon 23:00 0.34 · good 4.22 · good 30.00 · good poor