MARINE REPORT / 72 HOURS

Derawan Snorkel Report Today

Indonesia · Updated Sat 08:27 (WITA) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 08:27 (WITA)

Derawan has a usable snorkeling window around Sat 11:00. The main thing to watch is tide/current.

Right now (forecast)

Good · 6.6/10

Sat 10:00 (WITA)

Later today

Good · 6.9/10

Sat 14:00 (WITA)

Next three days

Excellent · 8.1/10

Mon 14:00 (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 11:00

Main risk: Tide/Current

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

Best afternoon signal: Sat 14:00 (Good). Peak afternoon wind is about 2.6 m/s.

Email me when it is good

Sunrise

05:50

Sunset

17:54

Water

30.5°C

Max air

29.2°C

Sky

Partly cloudy

66% cloud

Good model window in the next 72 hours

Next good model window: Sat 11:00–17:00 (39% 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 11:00 and lasts until 17:00.

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (69 hours)
  • Sea temperature (49 hours)
  • Darkness (42 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sat 12:00.

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

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

Fri 10:00 – Mon 10:00 (WITA)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.67 around Fri 14:00; 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 0.1m to 0.12m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.27 to 3.74m/s).

Tides range from -0.02m to 1.57m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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
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 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
Fri 12:00 0.12 · good 0.61 · good 30.90 · out of range Good
Fri 13:00 0.12 · good 1.67 · good 31.00 · out of range Good
Fri 14:00 0.12 · good 1.60 · good 31.00 · out of range Good
Fri 15:00 0.12 · good 2.61 · good 31.00 · out of range Good
Fri 16:00 0.12 · good 3.09 · good 31.00 · out of range Good
Fri 17:00 0.12 · good 3.69 · good 30.90 · out of range Good
Fri 18:00 0.12 · good 3.74 · good 30.80 · out of range Poor
Fri 19:00 0.10 · good 3.04 · good 30.80 · out of range Poor
Fri 20:00 0.10 · good 3.26 · good 30.70 · out of range Poor
Fri 21:00 0.10 · good 3.15 · good 30.70 · out of range Poor
Fri 22:00 0.10 · good 3.13 · good 30.70 · out of range Poor
Fri 23:00 0.10 · good 2.64 · good 30.70 · out of range Poor
Sat 00:00 0.10 · good 2.36 · good 30.60 · out of range Poor
Sat 01:00 0.10 · good 0.35 · good 30.60 · out of range Poor
Sat 02:00 0.10 · good 1.66 · good 30.60 · out of range Poor
Sat 03:00 0.10 · good 0.96 · good 30.60 · out of range Poor
Sat 04:00 0.10 · good 0.76 · good 30.60 · out of range Poor
Sat 05:00 0.10 · good 1.41 · good 30.60 · out of range Poor
Sat 06:00 0.10 · good 1.80 · good 30.60 · out of range Poor
Sat 07:00 0.10 · good 0.27 · good 30.60 · out of range Poor
Sat 08:00 0.10 · good 1.96 · good 30.60 · out of range Good
Sat 09:00 0.10 · good 2.95 · good 30.60 · out of range Good
Sat 10:00 0.10 · good 2.66 · good 30.70 · out of range Good
Sat 11:00 0.10 · good 1.99 · good 30.70 · out of range Good
Sat 12:00 0.10 · good 1.93 · good 30.80 · out of range Good
Sat 13:00 0.10 · good 3.17 · good 30.90 · out of range Good
Sat 14:00 0.10 · good 0.86 · good 30.90 · out of range Excellent
Sat 15:00 0.10 · good 1.55 · good 30.90 · out of range Good
Sat 16:00 0.10 · good 2.31 · good 30.80 · out of range Good
Sat 17:00 0.10 · good 3.38 · good 30.80 · out of range Good
Sat 18:00 0.10 · good 4.23 · good 30.80 · out of range Poor
Sat 19:00 0.10 · good 4.16 · good 30.70 · out of range Poor
Sat 20:00 0.10 · good 3.62 · good 30.70 · out of range Poor
Sat 21:00 0.10 · good 3.25 · good 30.60 · out of range Poor
Sat 22:00 0.10 · good 2.84 · good 30.60 · out of range Poor
Sat 23:00 0.10 · good 2.26 · good 30.60 · out of range Poor
Sun 00:00 0.10 · good 3.39 · good 30.60 · out of range Poor
Sun 01:00 0.10 · good 3.89 · good 30.60 · out of range Poor
Sun 02:00 0.10 · good 1.21 · good 30.60 · out of range Poor
Sun 03:00 0.10 · good 0.27 · good 30.60 · out of range Poor
Sun 04:00 0.10 · good 1.58 · good 30.50 · out of range Poor
Sun 05:00 0.10 · good 2.65 · good 30.50 · out of range Poor
Sun 06:00 0.12 · good 2.31 · good 30.50 · out of range Poor
Sun 07:00 0.12 · good 2.47 · good 30.50 · out of range Poor
Sun 08:00 0.12 · good 3.02 · good 30.50 · out of range Good
Sun 09:00 0.12 · good 2.74 · good 30.60 · out of range Good
Sun 10:00 0.12 · good 1.61 · good 30.60 · out of range Good
Sun 11:00 0.12 · good 1.84 · good 30.70 · out of range Excellent
Sun 12:00 0.12 · good 1.92 · good 30.80 · out of range Excellent
Sun 13:00 0.12 · good 2.44 · good 30.90 · out of range Excellent
Sun 14:00 0.12 · good 3.45 · good 30.90 · out of range Excellent
Sun 15:00 0.12 · good 2.65 · good 30.90 · out of range Excellent
Sun 16:00 0.12 · good 3.12 · good 30.90 · out of range Excellent
Sun 17:00 0.12 · good 3.37 · good 30.80 · out of range Excellent
Sun 18:00 0.10 · good 3.44 · good 30.60 · out of range Poor
Sun 19:00 0.10 · good 2.72 · good 30.50 · out of range Poor
Sun 20:00 0.10 · good 2.32 · good 30.50 · out of range Poor
Sun 21:00 0.10 · good 2.01 · good 30.50 · out of range Poor
Sun 22:00 0.10 · good 1.64 · good 30.40 · good Poor
Sun 23:00 0.10 · good 1.84 · good 30.40 · good Poor
Mon 00:00 0.10 · good 1.78 · good 30.40 · good Poor
Mon 01:00 0.10 · good 2.36 · good 30.40 · good Poor
Mon 02:00 0.10 · good 2.10 · good 30.40 · good Poor
Mon 03:00 0.10 · good 1.54 · good 30.40 · good Poor
Mon 04:00 0.10 · good 3.30 · good 30.40 · good Poor
Mon 05:00 0.10 · good 1.61 · good 30.40 · good Poor
Mon 06:00 0.10 · good 1.10 · good 30.40 · good Poor
Mon 07:00 0.10 · good 1.55 · good 30.40 · good Poor
Mon 08:00 0.10 · good 1.90 · good 30.40 · good Excellent
Mon 09:00 0.10 · good 1.59 · good 30.40 · good Excellent