MARINE REPORT / 72 HOURS

Derawan Snorkel Report Today

Indonesia · Updated Sat 21:17 (WITA) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 21:17 (WITA)

Derawan has a usable snorkeling window around Sun 08:00. The main thing to watch is tide/current.

Right now (forecast)

Poor · 0.0/10

Sun 00:00 (WITA)

Later today

Excellent · 8.0/10

Sun 14:00 (WITA)

Next three days

Excellent · 8.2/10

Tue 13:00 (WITA)

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

Score: 8.0/10

Best time: Sun 08:00

Main risk: Tide/Current

Best morning signal: Sun 08:00 (Good).

Best afternoon signal: Sun 14:00 (Excellent). Peak afternoon wind is about 3.4 m/s.

Email me when it is good

Sunrise

05:50

Sunset

17:54

Water

30.4°C

Max air

29.0°C

Sky

Partly cloudy

62% cloud

Good model window in the next 72 hours

Next good model window: Sun 08:00–17:00 (44% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Excellent conditions

Main blocker: Tide/current

Monday

✅ Excellent conditions

Main blocker: Tide/current

Tuesday

✅ Excellent conditions

Main blocker: Sea temperature

Best available hours

The next good model window starts at Sun 08:00 and lasts until 17:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (68 hours)
  • Sea temperature (54 hours)
  • Darkness (38 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sun 05:00.

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

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

Sat 00:00 – Tue 00:00 (WITA)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.73 around Sat 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 0.08m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.31 to 3.99m/s).

Tides range from 0.08m to 1.35m; 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
Poor ❌ Limited
Excellent ✅ Excellent
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
Good 🌟 Good
Excellent ✅ Excellent
Excellent ✅ Excellent
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 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 0.08 · good 2.73 · good 30.60 · out of range Poor
Sat 01:00 0.08 · good 3.78 · good 30.50 · out of range Poor
Sat 02:00 0.08 · good 1.84 · good 30.50 · out of range Poor
Sat 03:00 0.08 · good 3.43 · good 30.50 · out of range Poor
Sat 04:00 0.08 · good 2.42 · good 30.50 · out of range Poor
Sat 05:00 0.08 · good 3.16 · good 30.50 · out of range Poor
Sat 06:00 0.08 · good 2.33 · good 30.50 · out of range Poor
Sat 07:00 0.08 · good 3.15 · good 30.50 · out of range Poor
Sat 08:00 0.08 · good 2.37 · good 30.50 · out of range Excellent
Sat 09:00 0.08 · good 2.56 · good 30.60 · out of range Good
Sat 10:00 0.08 · good 2.55 · good 30.60 · out of range Good
Sat 11:00 0.08 · good 2.06 · good 30.70 · out of range Good
Sat 12:00 0.08 · good 1.66 · good 30.80 · out of range Good
Sat 13:00 0.08 · good 1.35 · good 30.90 · out of range Good
Sat 14:00 0.08 · good 1.74 · good 30.90 · out of range Good
Sat 15:00 0.08 · good 3.01 · good 30.90 · out of range Good
Sat 16:00 0.08 · good 3.84 · good 30.90 · out of range Good
Sat 17:00 0.08 · good 3.99 · good 30.90 · out of range Good
Sat 18:00 0.08 · good 3.02 · good 30.80 · out of range Poor
Sat 19:00 0.08 · good 1.35 · good 30.80 · out of range Poor
Sat 20:00 0.08 · good 1.33 · good 30.70 · out of range Poor
Sat 21:00 0.08 · good 1.31 · good 30.70 · out of range Poor
Sat 22:00 0.08 · good 2.11 · good 30.70 · out of range Poor
Sat 23:00 0.08 · good 2.16 · good 30.70 · out of range Poor
Sun 00:00 0.06 · good 3.61 · good 30.60 · out of range Poor
Sun 01:00 0.06 · good 1.74 · good 30.60 · out of range Poor
Sun 02:00 0.06 · good 2.99 · good 30.60 · out of range Poor
Sun 03:00 0.06 · good 1.90 · good 30.60 · out of range Poor
Sun 04:00 0.04 · good 1.69 · good 30.60 · out of range Poor
Sun 05:00 0.04 · good 2.22 · good 30.60 · out of range Poor
Sun 06:00 0.04 · good 1.84 · good 30.60 · out of range Poor
Sun 07:00 0.04 · good 1.85 · good 30.60 · out of range Poor
Sun 08:00 0.04 · good 2.44 · good 30.60 · out of range Good
Sun 09:00 0.04 · good 3.20 · good 30.70 · out of range Good
Sun 10:00 0.04 · good 3.92 · good 30.80 · out of range Good
Sun 11:00 0.04 · good 3.35 · good 30.90 · out of range Good
Sun 12:00 0.04 · good 2.62 · good 31.00 · out of range Excellent
Sun 13:00 0.04 · good 1.09 · good 31.00 · out of range Excellent
Sun 14:00 0.04 · good 1.61 · good 31.10 · out of range Excellent
Sun 15:00 0.04 · good 2.72 · good 31.10 · out of range Excellent
Sun 16:00 0.04 · good 3.65 · good 31.10 · out of range Good
Sun 17:00 0.04 · good 3.32 · good 31.00 · out of range Good
Sun 18:00 0.04 · good 2.52 · good 31.00 · out of range Poor
Sun 19:00 0.04 · good 2.62 · good 30.80 · out of range Poor
Sun 20:00 0.04 · good 2.06 · good 30.80 · out of range Poor
Sun 21:00 0.04 · good 1.96 · good 30.80 · out of range Poor
Sun 22:00 0.04 · good 2.25 · good 30.80 · out of range Poor
Sun 23:00 0.04 · good 2.35 · good 30.70 · out of range Poor
Mon 00:00 0.04 · good 3.92 · good 30.70 · out of range Poor
Mon 01:00 0.04 · good 2.57 · good 30.70 · out of range Poor
Mon 02:00 0.04 · good 5.20 · good 30.70 · out of range Poor
Mon 03:00 0.04 · good 4.29 · good 30.70 · out of range Poor
Mon 04:00 0.04 · good 2.45 · good 30.60 · out of range Poor
Mon 05:00 0.04 · good 2.73 · good 30.60 · out of range Poor
Mon 06:00 0.04 · good 1.51 · good 30.60 · out of range Poor
Mon 07:00 0.04 · good 3.65 · good 30.60 · out of range Poor
Mon 08:00 0.04 · good 3.58 · good 30.60 · out of range Good
Mon 09:00 0.04 · good 3.64 · good 30.70 · out of range Good
Mon 10:00 0.04 · good 1.34 · good 30.70 · out of range Good
Mon 11:00 0.04 · good 1.78 · good 30.80 · out of range Good
Mon 12:00 0.04 · good 1.31 · good 30.90 · out of range Good
Mon 13:00 0.04 · good 1.90 · good 31.00 · out of range Good
Mon 14:00 0.04 · good 0.99 · good 31.00 · out of range Excellent
Mon 15:00 0.04 · good 2.30 · good 31.00 · out of range Good
Mon 16:00 0.04 · good 0.56 · good 31.00 · out of range Excellent
Mon 17:00 0.04 · good 0.89 · good 31.00 · out of range Excellent
Mon 18:00 0.04 · good 0.70 · good 31.00 · out of range Poor
Mon 19:00 0.10 · good 2.41 · good 31.00 · out of range Poor
Mon 20:00 0.10 · good 2.52 · good 30.80 · out of range Poor
Mon 21:00 0.10 · good 2.30 · good 30.80 · out of range Poor
Mon 22:00 0.10 · good 2.66 · good 30.80 · out of range Poor
Mon 23:00 0.10 · good 2.48 · good 30.80 · out of range Poor