MARINE REPORT / 72 HOURS

Koh Rong Snorkel Report Today

Cambodia · Updated Sun 09:08 (+07) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 09:08 (+07)

Koh Rong has a usable snorkeling window around Sun 10:00. The main thing to watch is sea temperature.

Right now (forecast)

Good · 6.2/10

Sun 09:00 (+07)

Later today

Good · 6.7/10

Sun 11:00 (+07)

Next three days

Good · 7.2/10

Wed 08:00 (+07)

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

Score: 6.7/10

Best time: Sun 10:00

Main risk: Sea Temperature

Best morning signal: Sun 11:00 (Good).

Best afternoon signal: Sun 17:00 (Good). Peak afternoon wind is about 4.7 m/s.

Email me when it is good

Sunrise

05:56

Sunset

17:48

Water

30.7°C

Max air

28.5°C

Sky

Cloudy

81% cloud

Good model window in the next 72 hours

Next good model window: Sun 10:00–17:00 (15% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Good conditions

Main blocker: Sea temperature

Monday

⚠️ Fair conditions

Main blocker: Sea temperature

Tuesday

✅ Good conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Sun 10:00 and lasts until 17:00.

Why this verdict

Main blockers across the next 72 hours:

  • Sea temperature (71 hours)
  • Tide/current (59 hours)
  • Darkness (39 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

Sun 14:00

Nearby alternatives in Cambodia

No nearby alternatives available.

Advanced forecast data

Viewing historical data

Fri 09:00 – Mon 09:00 (+07)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.81 around Fri 11:00; 11 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 0.04m to 0.04m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.52 to 3.55m/s).

Tides range from 0.24m to 1.28m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
Excellent ✅ Excellent
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 is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Fri 09:00 0.04 · good 1.60 · good 29.70 · good Excellent
Fri 10:00 0.04 · good 1.00 · good 29.90 · good Excellent
Fri 11:00 0.04 · good 0.52 · good 30.00 · good Excellent
Fri 12:00 0.04 · good 1.30 · good 30.20 · good Excellent
Fri 13:00 0.04 · good 3.01 · good 30.30 · good Good
Fri 14:00 0.04 · good 3.24 · good 30.30 · good Good
Fri 15:00 0.04 · good 2.17 · good 30.30 · good Good
Fri 16:00 0.04 · good 1.56 · good 30.30 · good Good
Fri 17:00 0.04 · good 2.21 · good 30.20 · good Good
Fri 18:00 0.04 · good 2.99 · good 30.20 · good Poor
Fri 19:00 0.04 · good 2.38 · good 30.20 · good Poor
Fri 20:00 0.04 · good 2.70 · good 30.10 · good Poor
Fri 21:00 0.04 · good 3.26 · good 30.00 · good Poor
Fri 22:00 0.04 · good 3.55 · good 29.90 · good Poor
Fri 23:00 0.04 · good 3.51 · good 29.80 · good Poor
Sat 00:00 0.04 · good 2.69 · good 29.80 · good Poor
Sat 01:00 0.04 · good 2.92 · good 29.70 · good Poor
Sat 02:00 0.04 · good 2.87 · good 29.60 · good Poor
Sat 03:00 0.04 · good 2.80 · good 29.50 · good Poor
Sat 04:00 0.04 · good 1.40 · good 29.50 · good Poor
Sat 05:00 0.04 · good 2.04 · good 29.40 · good Poor
Sat 06:00 0.04 · good 1.35 · good 29.40 · good Poor
Sat 07:00 0.04 · good 1.90 · good 29.40 · good Excellent
Sat 08:00 0.04 · good 2.22 · good 29.40 · good Excellent
Sat 09:00 0.04 · good 2.24 · good 29.60 · good Excellent
Sat 10:00 0.04 · good 1.75 · good 29.70 · good Excellent
Sat 11:00 0.04 · good 1.87 · good 29.80 · good Excellent
Sat 12:00 0.04 · good 3.01 · good 30.00 · good Excellent
Sat 13:00 0.04 · good 4.63 · good 30.00 · good Good
Sat 14:00 0.04 · good 4.37 · good 30.00 · good Good
Sat 15:00 0.04 · good 3.56 · good 30.00 · good Good
Sat 16:00 0.04 · good 3.33 · good 30.00 · good Good
Sat 17:00 0.04 · good 2.85 · good 29.90 · good Good
Sat 18:00 0.04 · good 3.40 · good 30.00 · good Poor
Sat 19:00 0.04 · good 4.10 · good 29.90 · good Poor
Sat 20:00 0.04 · good 3.70 · good 29.90 · good Poor
Sat 21:00 0.06 · good 3.64 · good 29.80 · good Poor
Sat 22:00 0.06 · good 2.95 · good 29.80 · good Poor
Sat 23:00 0.04 · good 4.15 · good 29.70 · good Poor
Sun 00:00 0.04 · good 3.70 · good 29.70 · good Poor
Sun 01:00 0.04 · good 3.40 · good 29.60 · good Poor
Sun 02:00 0.04 · good 2.66 · good 29.60 · good Poor
Sun 03:00 0.04 · good 2.07 · good 29.50 · good Poor
Sun 04:00 0.04 · good 2.07 · good 29.50 · good Poor
Sun 05:00 0.04 · good 2.14 · good 29.40 · good Poor
Sun 06:00 0.04 · good 1.00 · good 29.40 · good Poor
Sun 07:00 0.04 · good 1.95 · good 29.40 · good Excellent
Sun 08:00 0.04 · good 1.16 · good 29.50 · good Excellent
Sun 09:00 0.04 · good 2.15 · good 29.60 · good Excellent
Sun 10:00 0.04 · good 2.80 · good 29.70 · good Excellent
Sun 11:00 0.06 · good 3.25 · good 29.80 · good Excellent
Sun 12:00 0.06 · good 4.40 · good 29.90 · good Excellent
Sun 13:00 0.08 · good 5.15 · good 29.90 · good Good
Sun 14:00 0.10 · good 4.89 · good 30.00 · good Good
Sun 15:00 0.12 · good 4.57 · good 30.00 · good Good
Sun 16:00 0.14 · good 4.40 · good 30.00 · good Good
Sun 17:00 0.16 · good 3.98 · good 30.00 · good Good
Sun 18:00 0.20 · good 4.38 · good 30.20 · good Poor
Sun 19:00 0.20 · good 3.71 · good 30.10 · good Poor
Sun 20:00 0.20 · good 3.38 · good 30.10 · good Poor
Sun 21:00 0.20 · good 2.88 · good 30.00 · good Poor
Sun 22:00 0.20 · good 2.82 · good 30.00 · good Poor
Sun 23:00 0.20 · good 2.60 · good 29.90 · good Poor
Mon 00:00 0.20 · good 2.36 · good 29.80 · good Poor
Mon 01:00 0.22 · good 2.56 · good 29.80 · good Poor
Mon 02:00 0.22 · good 2.14 · good 29.70 · good Poor
Mon 03:00 0.22 · good 2.25 · good 29.70 · good Poor
Mon 04:00 0.22 · good 2.53 · good 29.60 · good Poor
Mon 05:00 0.22 · good 0.82 · good 29.60 · good Poor
Mon 06:00 0.20 · good 1.63 · good 29.60 · good Poor
Mon 07:00 0.20 · good 1.59 · good 29.60 · good Excellent
Mon 08:00 0.20 · good 1.37 · good 29.70 · good Excellent