SnorkelForecast.com

Derawan Snorkel Report Today

Indonesia · Updated Tue 20:32 (WITA) · Source: Snapshot

The skinny

Go in the best window Report Wed 07:21

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

Score: 7.6/10

Best time: Wed 08:00

Main risk: Tide/Current

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

Best afternoon signal: Wed 14:00 (Excellent). Peak afternoon wind is about 5.8 m/s.

Email me when it is good

Sunrise

06:02

Sunset

18:11

Water

29.1°C

Max air

29.6°C

Sky

Partly cloudy

40% cloud

Good window is available today

Next good model window: Wed 00:00–10:00 (49% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Wednesday

✅ Excellent conditions

Main blocker: Tide/current

Thursday

✅ Excellent conditions

Main blocker: Tide/current

Friday

✅ Excellent conditions

Main blocker: Wind

Best available hours

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

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (45 hours)
  • Darkness (35 hours)
  • Wind (30 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Wed 16:00.

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: Wed 00:00

Wed 00:00, Wed 12:00, Thu 00:00, Thu 13:00, Fri 01:00, Fri 13:00

Nearby alternatives in Indonesia

Bunaken

728 km away

✅ Good

Wakatobi

1033 km away

❌ Poor

Gili Trawangan

1208 km away

✅ Good

Gili Air

1208 km away

✅ Good

Advanced forecast data

Viewing current forecast

Tue 23:00 – Fri 23:00 (WITA)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.76 around Wed 14:00; 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 0.14m to 0.36m).

Wind is at or below 5.4m/s in 16/24 sampled hours (range 1.68 to 8.38m/s).

Tides range from -0.29m to 1.73m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Excellent ✅ Excellent
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
Good 🌟 Good
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
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
Wed 00:00 0.26 · good 4.92 · good 29.10 · good Good
Wed 01:00 0.24 · good 4.92 · good 29.10 · good Good
Wed 02:00 0.22 · good 4.65 · good 29.20 · good Good
Wed 03:00 0.20 · good 4.16 · good 29.30 · good Good
Wed 04:00 0.18 · good 3.20 · good 29.40 · good Excellent
Wed 05:00 0.18 · good 1.97 · good 29.40 · good Excellent
Wed 06:00 0.16 · good 1.68 · good 29.50 · good Excellent
Wed 07:00 0.16 · good 2.51 · good 29.50 · good Good
Wed 08:00 0.14 · good 3.09 · good 29.40 · good Good
Wed 09:00 0.14 · good 4.11 · good 29.40 · good Good
Wed 10:00 0.18 · good 5.76 · high 29.30 · good Good
Wed 11:00 0.22 · good 5.67 · high 29.30 · good Poor
Wed 12:00 0.26 · good 5.41 · high 29.20 · good Poor
Wed 13:00 0.30 · good 6.17 · high 29.20 · good Poor
Wed 14:00 0.32 · good 6.59 · high 29.20 · good Poor
Wed 15:00 0.36 · good 7.12 · high 29.10 · good Poor
Wed 16:00 0.34 · good 6.75 · high 29.10 · good Poor
Wed 17:00 0.34 · good 8.38 · high 29.10 · good Poor
Wed 18:00 0.32 · good 3.84 · good 29.10 · good Poor
Wed 19:00 0.28 · good 4.27 · good 29.10 · good Poor
Wed 20:00 0.26 · good 3.44 · good 29.00 · good Poor
Wed 21:00 0.22 · good 3.47 · good 29.00 · good Poor
Wed 22:00 0.22 · good 3.36 · good 29.00 · good Poor
Wed 23:00 0.22 · good 3.48 · good 29.00 · good Poor
Thu 00:00 0.22 · good 3.05 · good 29.00 · good Good
Thu 01:00 0.22 · good 3.02 · good 29.10 · good Excellent
Thu 02:00 0.22 · good 3.43 · good 29.20 · good Good
Thu 03:00 0.22 · good 3.94 · good 29.30 · good Good
Thu 04:00 0.20 · good 4.27 · good 29.40 · good Good
Thu 05:00 0.20 · good 3.03 · good 29.40 · good Excellent
Thu 06:00 0.18 · good 2.37 · good 29.50 · good Excellent
Thu 07:00 0.18 · good 2.95 · good 29.50 · good Good
Thu 08:00 0.16 · good 3.58 · good 29.40 · good Good
Thu 09:00 0.16 · good 4.79 · good 29.40 · good Good
Thu 10:00 0.20 · good 5.46 · high 29.30 · good Good
Thu 11:00 0.22 · good 4.83 · good 29.30 · good Poor
Thu 12:00 0.26 · good 5.01 · good 29.20 · good Poor
Thu 13:00 0.32 · good 6.90 · high 29.20 · good Poor
Thu 14:00 0.36 · good 8.15 · high 29.20 · good Poor
Thu 15:00 0.42 · high 7.54 · high 29.10 · good Poor
Thu 16:00 0.44 · high 7.21 · high 29.10 · good Poor
Thu 17:00 0.46 · high 7.25 · high 29.10 · good Poor
Thu 18:00 0.48 · high 7.04 · high 29.00 · good Poor
Thu 19:00 0.46 · high 7.04 · high 29.00 · good Poor
Thu 20:00 0.44 · high 7.32 · high 29.00 · good Poor
Thu 21:00 0.42 · high 7.46 · high 28.90 · good Poor
Thu 22:00 0.40 · high 7.17 · high 28.90 · good Poor
Thu 23:00 0.40 · high 6.64 · high 28.90 · good Poor
Fri 00:00 0.38 · high 6.39 · high 28.90 · good Good
Fri 01:00 0.36 · good 5.96 · high 29.00 · good Good
Fri 02:00 0.36 · good 5.70 · high 29.10 · good Good
Fri 03:00 0.34 · good 6.19 · high 29.20 · good Good
Fri 04:00 0.32 · good 4.09 · good 29.30 · good Good
Fri 05:00 0.28 · good 1.84 · good 29.30 · good Excellent
Fri 06:00 0.26 · good 1.28 · good 29.40 · good Excellent
Fri 07:00 0.28 · good 2.71 · good 29.40 · good Good
Fri 08:00 0.30 · good 4.47 · good 29.40 · good Good
Fri 09:00 0.32 · good 5.35 · good 29.30 · good Good
Fri 10:00 0.34 · good 4.51 · good 29.30 · good Good
Fri 11:00 0.34 · good 4.21 · good 29.20 · good Poor
Fri 12:00 0.36 · good 4.33 · good 29.20 · good Poor
Fri 13:00 0.38 · high 5.15 · good 29.10 · good Poor
Fri 14:00 0.40 · high 6.76 · high 29.10 · good Poor
Fri 15:00 0.42 · high 6.51 · high 29.10 · good Poor
Fri 16:00 0.42 · high 6.98 · high 29.00 · good Poor
Fri 17:00 0.40 · high 6.87 · high 29.00 · good Poor
Fri 18:00 0.40 · high 6.86 · high 29.00 · good Poor
Fri 19:00 0.38 · high 6.97 · high 28.90 · good Poor