MARINE REPORT / 72 HOURS

Koh Rong Snorkel Report Today

Cambodia · Updated Sun 21:40 (+07) · Source: Snapshot

The skinny

Marginal Data updated Sun 21:40 (+07)

Koh Rong looks marginal today. The least-bad daylight window is around Mon 17:00, but sea temperature is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Mon 00:00 (+07)

Later today

Fair · 4.2/10

Mon 17:00 (+07)

Next three days

Excellent · 7.5/10

Wed 16:00 (+07)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 4.2/10

Best time: Mon 17:00

Main risk: Sea Temperature

Best morning signal: Mon 07:00 (Fair).

Best afternoon signal: Mon 17:00 (Fair). Peak afternoon wind is about 7.3 m/s.

Email me when it is good

Sunrise

05:56

Sunset

17:48

Water

30.6°C

Max air

28.8°C

Sky

Cloudy

100% cloud

Good model window in the next 72 hours

Next good model window: Tue 07:00–17:00 (32% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Monday

⚠️ Fair conditions

Main blocker: Sea temperature

Tuesday

✅ Good conditions

Main blocker: Sea temperature

Wednesday

✅ Excellent conditions

Main blocker: Tide/current

Best available hours

The next good model window starts at Tue 07:00 and lasts until 17:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (58 hours)
  • Tide/current (56 hours)
  • Darkness (35 hours)

Jellyfish drift risk

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

Low · 34/100

Low drift risk now.

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.

Upcoming high tides

Tue 15:00

Nearby alternatives in Cambodia

No nearby alternatives available.

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 0.43 around Sat 09:00; 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 0.46m to 0.64m).

Wind is at or below 5.4m/s in 21/24 sampled hours (range 2.69 to 7.32m/s).

Tides range from 0.4m to 1.17m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
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
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Sat 00:00 0.52 · high 7.32 · high 29.20 · good Poor
Sat 01:00 0.52 · high 5.00 · good 29.20 · good Poor
Sat 02:00 0.54 · high 4.77 · good 29.20 · good Poor
Sat 03:00 0.56 · high 4.55 · good 29.10 · good Poor
Sat 04:00 0.58 · high 4.16 · good 29.10 · good Poor
Sat 05:00 0.60 · high 4.41 · good 29.10 · good Poor
Sat 06:00 0.64 · high 3.56 · good 29.10 · good Poor
Sat 07:00 0.50 · high 6.24 · high 29.10 · good Fair
Sat 08:00 0.50 · high 5.38 · good 29.20 · good Fair
Sat 09:00 0.50 · high 4.17 · good 29.20 · good Fair
Sat 10:00 0.50 · high 4.42 · good 29.30 · good Fair
Sat 11:00 0.50 · high 5.49 · high 29.30 · good Fair
Sat 12:00 0.52 · high 4.21 · good 29.40 · good Fair
Sat 13:00 0.52 · high 4.75 · good 29.40 · good Fair
Sat 14:00 0.54 · high 5.04 · good 29.40 · good Fair
Sat 15:00 0.56 · high 4.50 · good 29.40 · good Fair
Sat 16:00 0.58 · high 4.36 · good 29.30 · good Fair
Sat 17:00 0.58 · high 4.43 · good 29.30 · good Fair
Sat 18:00 0.58 · high 4.83 · good 29.30 · good Fair
Sat 19:00 0.52 · high 3.53 · good 29.60 · good Poor
Sat 20:00 0.50 · high 3.56 · good 29.50 · good Poor
Sat 21:00 0.50 · high 2.92 · good 29.50 · good Poor
Sat 22:00 0.48 · high 2.69 · good 29.40 · good Poor
Sat 23:00 0.46 · high 2.69 · good 29.30 · good Poor
Sun 00:00 0.44 · high 2.44 · good 29.30 · good Poor
Sun 01:00 0.40 · high 2.80 · good 29.20 · good Poor
Sun 02:00 0.38 · high 2.73 · good 29.20 · good Poor
Sun 03:00 0.38 · high 3.04 · good 29.10 · good Poor
Sun 04:00 0.36 · good 3.27 · good 29.00 · good Poor
Sun 05:00 0.34 · good 2.41 · good 28.90 · good Poor
Sun 06:00 0.34 · good 2.69 · good 28.90 · good Poor
Sun 07:00 0.32 · good 3.32 · good 28.90 · good Fair
Sun 08:00 0.32 · good 2.90 · good 29.00 · good Good
Sun 09:00 0.30 · good 3.54 · good 29.20 · good Good
Sun 10:00 0.30 · good 2.96 · good 29.40 · good Good
Sun 11:00 0.28 · good 2.35 · good 29.70 · good Good
Sun 12:00 0.28 · good 2.01 · good 29.90 · good Good
Sun 13:00 0.26 · good 5.05 · good 30.00 · good Fair
Sun 14:00 0.26 · good 4.97 · good 30.00 · good Fair
Sun 15:00 0.24 · good 4.85 · good 30.00 · good Fair
Sun 16:00 0.24 · good 4.09 · good 30.00 · good Good
Sun 17:00 0.24 · good 4.15 · good 30.00 · good Good
Sun 18:00 0.26 · good 4.17 · good 30.00 · good Fair
Sun 19:00 0.24 · good 4.26 · good 30.00 · good Poor
Sun 20:00 0.24 · good 3.73 · good 29.90 · good Poor
Sun 21:00 0.22 · good 3.54 · good 29.80 · good Poor
Sun 22:00 0.14 · good 4.50 · good 29.70 · good Poor
Sun 23:00 0.14 · good 4.70 · good 29.60 · good Poor
Mon 00:00 0.14 · good 3.91 · good 29.50 · good Poor
Mon 01:00 0.14 · good 4.60 · good 29.50 · good Poor
Mon 02:00 0.16 · good 4.05 · good 29.40 · good Poor
Mon 03:00 0.16 · good 5.36 · good 29.40 · good Poor
Mon 04:00 0.18 · good 4.75 · good 29.40 · good Poor
Mon 05:00 0.20 · good 4.60 · good 29.40 · good Poor
Mon 06:00 0.20 · good 4.73 · good 29.40 · good Poor
Mon 07:00 0.22 · good 4.35 · good 29.50 · good Good
Mon 08:00 0.22 · good 2.42 · good 29.50 · good Good
Mon 09:00 0.20 · good 1.81 · good 29.60 · good Good
Mon 10:00 0.20 · good 3.67 · good 29.70 · good Good
Mon 11:00 0.22 · good 6.78 · high 29.80 · good Fair
Mon 12:00 0.22 · good 6.20 · high 29.90 · good Fair
Mon 13:00 0.24 · good 6.31 · high 29.90 · good Fair
Mon 14:00 0.24 · good 6.81 · high 29.90 · good Fair
Mon 15:00 0.24 · good 6.82 · high 30.00 · good Fair
Mon 16:00 0.24 · good 6.78 · high 30.00 · good Fair
Mon 17:00 0.22 · good 5.97 · high 29.90 · good Fair
Mon 18:00 0.36 · good 5.86 · high 29.80 · good Fair
Mon 19:00 0.36 · good 6.62 · high 29.80 · good Poor
Mon 20:00 0.34 · good 6.16 · high 29.80 · good Poor
Mon 21:00 0.32 · good 5.69 · high 29.80 · good Poor
Mon 22:00 0.32 · good 6.42 · high 29.80 · good Poor
Mon 23:00 0.36 · good 5.73 · high 29.70 · good Poor