MARINE REPORT / 72 HOURS

Derawan Snorkel Report Today

Indonesia · Updated Sat 11:33 (WITA) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 11:33 (WITA)

Derawan has a usable snorkeling window around Sat 13:00. The main thing to watch is tide/current.

Right now (forecast)

Good · 7.1/10

Sat 12:00 (WITA)

Later today

Good · 6.9/10

Sat 14:00 (WITA)

Next three days

Excellent · 8.1/10

Sun 12:00 (WITA)

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

Score: 6.9/10

Best time: Sat 13:00

Main risk: Tide/Current

No useful morning window is showing yet.

Best afternoon signal: Sat 14:00 (Good). Peak afternoon wind is about 3.0 m/s.

Email me when it is good

Sunrise

05:50

Sunset

17:54

Water

30.6°C

Max air

29.2°C

Sky

Cloudy

96% cloud

Good model window in the next 72 hours

Next good model window: Sat 13:00–17:00 (40% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

✅ Good conditions

Main blocker: Tide/current

Sunday

✅ Excellent conditions

Main blocker: Tide/current

Monday

✅ Excellent conditions

Main blocker: Tide/current

Best available hours

The next good model window starts at Sat 13:00 and lasts until 17:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (70 hours)
  • Sea temperature (50 hours)
  • Darkness (42 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

Next early morning high tide: Sun 08:00

Sat 20:00, Sun 08:00, Sun 21:00, Mon 23:00

Nearby alternatives in Indonesia

Bunaken

728 km away

✅ Good

Wakatobi

1033 km away

✅ Good

Gili Trawangan

1208 km away

✅ Good

Gili Air

1208 km away

✅ Good

Advanced forecast data

Viewing historical data

Tue 12:00 – Fri 12:00 (WITA)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.78 around Wed 08:00; 10 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 0.08m to 0.1m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.36 to 4.08m/s).

Tides range from -0.39m to 1.9m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Poor ❌ Limited
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Poor ❌ Limited
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Tue 12:00 0.08 · good 0.36 · good 30.20 · good Excellent
Tue 13:00 0.08 · good 1.36 · good 30.30 · good Excellent
Tue 14:00 0.08 · good 2.79 · good 30.40 · good Good
Tue 15:00 0.08 · good 3.78 · good 30.40 · good Good
Tue 16:00 0.08 · good 3.83 · good 30.40 · good Good
Tue 17:00 0.08 · good 3.81 · good 30.30 · good Good
Tue 18:00 0.08 · good 4.08 · good 30.30 · good Poor
Tue 19:00 0.10 · good 2.68 · good 30.30 · good Poor
Tue 20:00 0.10 · good 3.40 · good 30.30 · good Poor
Tue 21:00 0.10 · good 4.03 · good 30.30 · good Poor
Tue 22:00 0.10 · good 3.78 · good 30.20 · good Poor
Tue 23:00 0.10 · good 3.29 · good 30.20 · good Poor
Wed 00:00 0.10 · good 3.13 · good 30.20 · good Poor
Wed 01:00 0.10 · good 2.40 · good 30.20 · good Poor
Wed 02:00 0.10 · good 2.50 · good 30.20 · good Poor
Wed 03:00 0.10 · good 2.71 · good 30.20 · good Poor
Wed 04:00 0.10 · good 3.05 · good 30.10 · good Poor
Wed 05:00 0.10 · good 2.83 · good 30.10 · good Poor
Wed 06:00 0.10 · good 1.20 · good 30.10 · good Poor
Wed 07:00 0.10 · good 0.76 · good 30.10 · good Poor
Wed 08:00 0.10 · good 2.68 · good 30.20 · good Excellent
Wed 09:00 0.10 · good 2.39 · good 30.20 · good Excellent
Wed 10:00 0.10 · good 2.05 · good 30.30 · good Good
Wed 11:00 0.10 · good 2.94 · good 30.50 · out of range Good
Wed 12:00 0.10 · good 3.14 · good 30.60 · out of range Good
Wed 13:00 0.10 · good 2.87 · good 30.70 · out of range Good
Wed 14:00 0.10 · good 3.23 · good 30.70 · out of range Good
Wed 15:00 0.10 · good 3.69 · good 30.70 · out of range Good
Wed 16:00 0.12 · good 3.29 · good 30.70 · out of range Good
Wed 17:00 0.12 · good 3.12 · good 30.70 · out of range Good
Wed 18:00 0.12 · good 3.01 · good 30.60 · out of range Poor
Wed 19:00 0.14 · good 2.87 · good 30.50 · out of range Poor
Wed 20:00 0.14 · good 3.49 · good 30.50 · out of range Poor
Wed 21:00 0.14 · good 3.39 · good 30.50 · out of range Poor
Wed 22:00 0.14 · good 3.29 · good 30.50 · out of range Poor
Wed 23:00 0.14 · good 3.01 · good 30.50 · out of range Poor
Thu 00:00 0.14 · good 2.59 · good 30.50 · out of range Poor
Thu 01:00 0.14 · good 2.19 · good 30.50 · out of range Poor
Thu 02:00 0.14 · good 1.75 · good 30.50 · out of range Poor
Thu 03:00 0.14 · good 1.41 · good 30.50 · out of range Poor
Thu 04:00 0.14 · good 1.12 · good 30.50 · out of range Poor
Thu 05:00 0.14 · good 1.46 · good 30.50 · out of range Poor
Thu 06:00 0.14 · good 1.05 · good 30.50 · out of range Poor
Thu 07:00 0.14 · good 0.35 · good 30.50 · out of range Poor
Thu 08:00 0.14 · good 1.75 · good 30.50 · out of range Good
Thu 09:00 0.14 · good 1.19 · good 30.60 · out of range Excellent
Thu 10:00 0.12 · good 1.01 · good 30.70 · out of range Excellent
Thu 11:00 0.12 · good 0.87 · good 30.80 · out of range Excellent
Thu 12:00 0.12 · good 0.25 · good 30.90 · out of range Excellent
Thu 13:00 0.12 · good 0.50 · good 31.00 · out of range Excellent
Thu 14:00 0.12 · good 1.04 · good 31.00 · out of range Excellent
Thu 15:00 0.12 · good 2.30 · good 31.00 · out of range Excellent
Thu 16:00 0.12 · good 3.23 · good 31.00 · out of range Good
Thu 17:00 0.12 · good 3.18 · good 30.90 · out of range Good
Thu 18:00 0.12 · good 3.45 · good 30.80 · out of range Poor
Thu 19:00 0.12 · good 3.68 · good 30.80 · out of range Poor
Thu 20:00 0.12 · good 3.15 · good 30.80 · out of range Poor
Thu 21:00 0.12 · good 3.03 · good 30.80 · out of range Poor
Thu 22:00 0.12 · good 3.22 · good 30.70 · out of range Poor
Thu 23:00 0.12 · good 3.55 · good 30.70 · out of range Poor
Fri 00:00 0.14 · good 3.91 · good 30.70 · out of range Poor
Fri 01:00 0.14 · good 3.30 · good 30.70 · out of range Poor
Fri 02:00 0.14 · good 2.26 · good 30.70 · out of range Poor
Fri 03:00 0.14 · good 1.89 · good 30.70 · out of range Poor
Fri 04:00 0.14 · good 2.70 · good 30.70 · out of range Poor
Fri 05:00 0.14 · good 3.10 · good 30.60 · out of range Poor
Fri 06:00 0.14 · good 3.12 · good 30.60 · out of range Poor
Fri 07:00 0.12 · good 2.45 · good 30.60 · out of range Poor
Fri 08:00 0.12 · good 2.67 · good 30.60 · out of range Good
Fri 09:00 0.12 · good 2.76 · good 30.70 · out of range Good
Fri 10:00 0.12 · good 2.82 · good 30.70 · out of range Good
Fri 11:00 0.12 · good 2.67 · good 30.80 · out of range Good