Can you snorkel in Derawan today?

Yes. The next good snorkeling window in Derawan starts Wed 02:00 and lasts until 10:00. Around 22% of the next 72 hours are suitable.

What is the best time of day to snorkel in Derawan?

Snorkel during daylight, ideally in the morning before the wind picks up, and around high slack tide when water is clearest and currents are weakest. SnorkelForecast scores every daylight hour in Derawan so you can pick the calmest window.

What is the best tide for snorkeling?

High slack tide — within about an hour of the high-tide peak when currents are weakest — is the safest, clearest window. Strong low tides, strong tidal flow near channels or headlands, and large tidal-range days reduce score.

Derawan Snorkel Report Today

Indonesia · Updated Tue 04:15 (WITA) · Source: Snapshot

The skinny

Go in the best window Report Wed 09:52

Derawan has a usable snorkeling window around Wed 10:00. The main thing to watch is tide/current.

Score: 7.2/10

Best time: Wed 10:00

Main risk: Tide/Current

Best morning signal: Wed 10:00 (Good).

Best afternoon signal: Wed 14:00 (Good). Peak afternoon wind is about 3.7 m/s.

Email me when it is good

Sunrise

06:06

Sunset

18:20

Water

29.4°C

Max air

28.1°C

Sky

Cloudy

98% cloud

Good window is available today

Next safe window: Wed 02:00–10:00 (22% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Wednesday

✅ good conditions

Main blocker: Tide/current

Thursday

✅ good conditions

Main blocker: Tide/current

Friday

⚠️ fair conditions

Main blocker: Tide/current

Best available hours

Next safe window starts at Wed 02:00 until 10:00.

Why this verdict

Main blockers across the next 72 hours:

Tide/current (50 hours)
Darkness (26 hours)
Wind (17 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Wed 18:00.

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

Wed 02:00, Wed 15:00, Thu 03:00

Nearby alternatives in Indonesia

Bunaken

728 km away

✅ Good

Wakatobi

1033 km away

❌ Poor

Gili Trawangan

1208 km away

⚠️ Fair

Gili Air

1208 km away

⚠️ Fair

Advanced forecast data

Viewing historical data

Fri 01:00 – Mon 01:00 (WITA)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.54 around Fri 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.

0/24 sampled hours stay at or below 0.36m (range 0.42m to 0.5m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 5.55 to 9.01m/s).

Tides range from 0.16m to 1.42m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Fri 01:00 fair ⚠️ Fair

Fri 02:00 fair ⚠️ Fair

Fri 03:00 fair ⚠️ Fair

Fri 04:00 fair ⚠️ Fair

Fri 05:00 fair ⚠️ Fair

Fri 06:00 fair ⚠️ Fair

Fri 07:00 fair ⚠️ Fair

Fri 08:00 fair ⚠️ Fair

Fri 09:00 fair ⚠️ Fair

Fri 10:00 fair ⚠️ Fair

Fri 11:00 poor ❌ Limited

Fri 12:00 poor ❌ Limited

Fri 13:00 poor ❌ Limited

Fri 14:00 poor ❌ Limited

Fri 15:00 poor ❌ Limited

Fri 16:00 poor ❌ Limited

Fri 17:00 poor ❌ Limited

Fri 18:00 poor ❌ Limited

Fri 19:00 poor ❌ Limited

Fri 20:00 poor ❌ Limited

Fri 21:00 poor ❌ Limited

Fri 22:00 poor ❌ Limited

Fri 23:00 poor ❌ Limited

Sat 00:00 fair ⚠️ Fair

Sat 01:00 fair ⚠️ Fair

Sat 02:00 fair ⚠️ Fair

Sat 03:00 fair ⚠️ Fair

Sat 04:00 fair ⚠️ Fair

Sat 05:00 good 🌟 Good

Sat 06:00 good 🌟 Good

Sat 07:00 good 🌟 Good

Sat 08:00 good 🌟 Good

Sat 09:00 fair ⚠️ Fair

Sat 10:00 fair ⚠️ Fair

Sat 11:00 poor ❌ Limited

Sat 12:00 poor ❌ Limited

Sat 13:00 poor ❌ Limited

Sat 14:00 poor ❌ Limited

Sat 15:00 poor ❌ Limited

Sat 16:00 poor ❌ Limited

Sat 17:00 poor ❌ Limited

Sat 18:00 poor ❌ Limited

Sat 19:00 poor ❌ Limited

Sat 20:00 poor ❌ Limited

Sat 21:00 poor ❌ Limited

Sat 22:00 poor ❌ Limited

Sat 23:00 poor ❌ Limited

Sun 00:00 poor ❌ Limited

Sun 01:00 fair ⚠️ Fair

Sun 02:00 fair ⚠️ Fair

Sun 03:00 fair ⚠️ Fair

Sun 04:00 good 🌟 Good

Sun 05:00 good 🌟 Good

Sun 06:00 good 🌟 Good

Sun 07:00 good 🌟 Good

Sun 08:00 good 🌟 Good

Sun 09:00 good 🌟 Good

Sun 10:00 fair ⚠️ Fair

Sun 11:00 poor ❌ Limited

Sun 12:00 poor ❌ Limited

Sun 13:00 poor ❌ Limited

Sun 14:00 poor ❌ Limited

Sun 15:00 poor ❌ Limited

Sun 16:00 poor ❌ Limited

Sun 17:00 poor ❌ Limited

Sun 18:00 poor ❌ Limited

Sun 19:00 poor ❌ Limited

Sun 20:00 poor ❌ Limited

Sun 21:00 poor ❌ Limited

Sun 22:00 poor ❌ Limited

Sun 23:00 poor ❌ Limited

Mon 00:00 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 and safety gate (outside daylight scores lower).

Detailed hourly data table

Time	Wave (m)	Wind (m/s)	Sea temp (°C)	Status
Fri 01:00	0.50 · high	8.14 · high	29.40 · good	fair
Fri 02:00	0.50 · high	7.18 · high	29.40 · good	fair
Fri 03:00	0.48 · high	6.80 · high	29.50 · good	fair
Fri 04:00	0.48 · high	6.79 · high	29.50 · good	fair
Fri 05:00	0.46 · high	6.20 · high	29.60 · good	fair
Fri 06:00	0.46 · high	6.95 · high	29.60 · good	fair
Fri 07:00	0.48 · high	7.66 · high	29.60 · good	fair
Fri 08:00	0.48 · high	7.42 · high	29.60 · good	fair
Fri 09:00	0.50 · high	7.08 · high	29.60 · good	fair
Fri 10:00	0.48 · high	6.62 · high	29.60 · good	fair
Fri 11:00	0.48 · high	6.81 · high	29.50 · good	poor
Fri 12:00	0.46 · high	7.71 · high	29.50 · good	poor
Fri 13:00	0.44 · high	7.22 · high	29.50 · good	poor
Fri 14:00	0.44 · high	9.01 · high	29.50 · good	poor
Fri 15:00	0.42 · high	7.68 · high	29.50 · good	poor
Fri 16:00	0.44 · high	5.55 · high	29.50 · good	poor
Fri 17:00	0.44 · high	5.62 · high	29.40 · good	poor
Fri 18:00	0.46 · high	6.20 · high	29.40 · good	poor
Fri 19:00	0.46 · high	7.23 · high	29.40 · good	poor
Fri 20:00	0.46 · high	6.66 · high	29.40 · good	poor
Fri 21:00	0.46 · high	6.20 · high	29.40 · good	poor
Fri 22:00	0.46 · high	6.18 · high	29.40 · good	poor
Fri 23:00	0.46 · high	7.01 · high	29.40 · good	poor
Sat 00:00	0.46 · high	7.99 · high	29.40 · good	fair
Sat 01:00	0.44 · high	8.74 · high	29.40 · good	fair
Sat 02:00	0.44 · high	8.23 · high	29.40 · good	fair
Sat 03:00	0.42 · high	7.07 · high	29.50 · good	fair
Sat 04:00	0.38 · high	6.28 · high	29.60 · good	fair
Sat 05:00	0.34 · good	4.71 · good	29.60 · good	good
Sat 06:00	0.30 · good	3.95 · good	29.60 · good	good
Sat 07:00	0.28 · good	3.78 · good	29.60 · good	good
Sat 08:00	0.28 · good	4.58 · good	29.60 · good	good
Sat 09:00	0.26 · good	6.40 · high	29.60 · good	fair
Sat 10:00	0.32 · good	6.66 · high	29.60 · good	fair
Sat 11:00	0.36 · good	7.11 · high	29.50 · good	poor
Sat 12:00	0.42 · high	7.05 · high	29.50 · good	poor
Sat 13:00	0.44 · high	6.71 · high	29.50 · good	poor
Sat 14:00	0.46 · high	7.46 · high	29.50 · good	poor
Sat 15:00	0.48 · high	6.74 · high	29.50 · good	poor
Sat 16:00	0.46 · high	5.76 · high	29.50 · good	poor
Sat 17:00	0.44 · high	4.55 · good	29.40 · good	poor
Sat 18:00	0.42 · high	4.14 · good	29.40 · good	poor
Sat 19:00	0.44 · high	3.58 · good	29.40 · good	poor
Sat 20:00	0.44 · high	4.06 · good	29.40 · good	poor
Sat 21:00	0.46 · high	5.69 · high	29.40 · good	poor
Sat 22:00	0.48 · high	8.05 · high	29.40 · good	poor
Sat 23:00	0.48 · high	8.59 · high	29.40 · good	poor
Sun 00:00	0.50 · high	8.14 · high	29.40 · good	poor
Sun 01:00	0.48 · high	7.85 · high	29.40 · good	fair
Sun 02:00	0.44 · high	7.30 · high	29.50 · good	fair
Sun 03:00	0.42 · high	7.37 · high	29.50 · good	fair
Sun 04:00	0.38 · high	6.49 · high	29.60 · good	good
Sun 05:00	0.34 · good	4.62 · good	29.60 · good	good
Sun 06:00	0.30 · good	3.89 · good	29.70 · good	good
Sun 07:00	0.30 · good	4.56 · good	29.70 · good	good
Sun 08:00	0.28 · good	3.62 · good	29.80 · good	good
Sun 09:00	0.26 · good	5.51 · high	29.80 · good	good
Sun 10:00	0.28 · good	4.70 · good	29.80 · good	fair
Sun 11:00	0.28 · good	4.21 · good	29.80 · good	poor
Sun 12:00	0.30 · good	5.15 · good	29.70 · good	poor
Sun 13:00	0.32 · good	5.70 · high	29.70 · good	poor
Sun 14:00	0.34 · good	6.77 · high	29.70 · good	poor
Sun 15:00	0.36 · good	7.39 · high	29.60 · good	poor
Sun 16:00	0.34 · good	6.51 · high	29.60 · good	poor
Sun 17:00	0.34 · good	4.75 · good	29.60 · good	poor
Sun 18:00	0.32 · good	6.51 · high	29.50 · good	poor
Sun 19:00	0.28 · good	3.76 · good	29.50 · good	poor
Sun 20:00	0.26 · good	3.05 · good	29.40 · good	poor
Sun 21:00	0.22 · good	3.75 · good	29.40 · good	poor
Sun 22:00	0.22 · good	2.72 · good	29.40 · good	poor
Sun 23:00	0.20 · good	2.96 · good	29.40 · good	poor
Mon 00:00	0.20 · good	3.21 · good	29.40 · good	good