MARINE REPORT / 72 HOURS

Piran Snorkel Report Today

Slovenia · Updated Sun 10:22 (CEST) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 10:22 (CEST)

Piran has a usable snorkeling window around Sun 12:00. The main thing to watch is darkness.

Right now (forecast)

Excellent · 8.4/10

Sun 11:00 (CEST)

Later today

Excellent · 8.9/10

Sun 18:00 (CEST)

Next three days

Excellent · 8.9/10

Sun 18:00 (CEST)

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

Score: 8.9/10

Best time: Sun 12:00

Main risk: Darkness

No useful morning window is showing yet.

Best afternoon signal: Sun 18:00 (Excellent). Peak afternoon wind is about 2.9 m/s.

Email me when it is good

Sunrise

07:25

Sunset

18:15

Water

22.2°C

Max air

20.5°C

Sky

Cloudy

100% cloud

Good model window in the next 72 hours

Next good model window: Sun 12:00–18:00 (31% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Sunday

✅ Excellent conditions

Main blocker: Darkness

Monday

✅ Excellent conditions

Main blocker: Darkness

Tuesday

✅ Excellent conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 12:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Darkness (39 hours)
  • Waves (24 hours)
  • Tide/current (21 hours)

Jellyfish drift risk

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

Low · 20/100

Low peak drift risk around Sun 16:00.

water is warm enough for occasional jellyfish; 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: Mon 06:00

Mon 06:00, Tue 07:00, Tue 19:00, Wed 07:00

Nearby alternatives in Slovenia

No nearby alternatives available.

Advanced forecast data

Viewing historical data

Fri 11:00 – Mon 11:00 (CEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.85 around Sat 08:00; 13 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 0.28m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.28 to 2.97m/s).

Tides range from -0.48m to -0.14m; 1 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
Good 🌟 Good
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
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
Excellent ✅ Excellent
Excellent ✅ Excellent
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 11:00 0.28 · good 2.97 · good 25.00 · good Good
Fri 12:00 0.28 · good 2.40 · good 25.10 · good Good
Fri 13:00 0.28 · good 2.58 · good 25.20 · good Good
Fri 14:00 0.28 · good 2.56 · good 25.20 · good Good
Fri 15:00 0.28 · good 2.47 · good 25.20 · good Good
Fri 16:00 0.28 · good 2.24 · good 25.20 · good Good
Fri 17:00 0.28 · good 1.84 · good 25.10 · good Good
Fri 18:00 0.26 · good 1.68 · good 25.10 · good Good
Fri 19:00 0.24 · good 1.49 · good 25.00 · good Good
Fri 20:00 0.22 · good 1.48 · good 25.00 · good Poor
Fri 21:00 0.20 · good 1.58 · good 24.90 · good Poor
Fri 22:00 0.20 · good 1.92 · good 24.90 · good Poor
Fri 23:00 0.18 · good 1.91 · good 24.90 · good Poor
Sat 00:00 0.18 · good 2.13 · good 24.80 · good Poor
Sat 01:00 0.16 · good 1.77 · good 24.80 · good Poor
Sat 02:00 0.14 · good 1.92 · good 24.80 · good Poor
Sat 03:00 0.14 · good 1.78 · good 24.80 · good Poor
Sat 04:00 0.12 · good 1.90 · good 24.80 · good Poor
Sat 05:00 0.12 · good 1.28 · good 24.80 · good Poor
Sat 06:00 0.12 · good 1.61 · good 24.80 · good Poor
Sat 07:00 0.10 · good 1.58 · good 24.80 · good Excellent
Sat 08:00 0.10 · good 1.58 · good 24.80 · good Excellent
Sat 09:00 0.10 · good 2.02 · good 24.80 · good Excellent
Sat 10:00 0.08 · good 2.61 · good 24.80 · good Excellent
Sat 11:00 0.08 · good 3.30 · good 24.80 · good Excellent
Sat 12:00 0.08 · good 2.87 · good 24.90 · good Excellent
Sat 13:00 0.18 · good 1.84 · good 25.50 · good Good
Sat 14:00 0.18 · good 1.70 · good 25.60 · good Good
Sat 15:00 0.16 · good 1.71 · good 25.60 · good Excellent
Sat 16:00 0.14 · good 1.70 · good 25.60 · good Excellent
Sat 17:00 0.12 · good 2.00 · good 25.50 · good Excellent
Sat 18:00 0.10 · good 1.98 · good 25.50 · good Excellent
Sat 19:00 0.10 · good 1.52 · good 25.50 · good Excellent
Sat 20:00 0.08 · good 1.20 · good 25.40 · good Poor
Sat 21:00 0.04 · good 0.82 · good 25.40 · good Poor
Sat 22:00 0.04 · good 0.91 · good 25.40 · good Poor
Sat 23:00 0.04 · good 1.32 · good 25.30 · good Poor
Sun 00:00 0.04 · good 1.40 · good 25.30 · good Poor
Sun 01:00 0.04 · good 1.40 · good 25.30 · good Poor
Sun 02:00 0.04 · good 1.51 · good 25.20 · good Poor
Sun 03:00 0.04 · good 1.51 · good 25.20 · good Poor
Sun 04:00 0.02 · good 1.50 · good 25.20 · good Poor
Sun 05:00 0.02 · good 1.55 · good 25.20 · good Poor
Sun 06:00 0.02 · good 1.55 · good 25.20 · good Poor
Sun 07:00 0.02 · good 1.40 · good 25.20 · good Excellent
Sun 08:00 0.02 · good 1.53 · good 25.20 · good Excellent
Sun 09:00 0.02 · good 1.04 · good 25.20 · good Excellent
Sun 10:00 0.02 · good 1.04 · good 25.30 · good Excellent
Sun 11:00 0.02 · good 1.22 · good 25.40 · good Excellent
Sun 12:00 0.02 · good 2.72 · good 25.40 · good Excellent
Sun 13:00 0.02 · good 2.64 · good 25.50 · good Excellent
Sun 14:00 0.02 · good 2.56 · good 25.60 · good Excellent
Sun 15:00 0.02 · good 2.64 · good 25.60 · good Excellent
Sun 16:00 0.02 · good 2.73 · good 25.60 · good Excellent
Sun 17:00 0.02 · good 2.32 · good 25.50 · good Excellent
Sun 18:00 0.02 · good 1.80 · good 25.50 · good Excellent
Sun 19:00 0.02 · good 1.00 · good 25.50 · good Excellent
Sun 20:00 0.02 · good 0.32 · good 25.40 · good Poor
Sun 21:00 0.02 · good 1.39 · good 25.40 · good Poor
Sun 22:00 0.02 · good 1.88 · good 25.40 · good Poor
Sun 23:00 0.02 · good 1.89 · good 25.30 · good Poor
Mon 00:00 0.02 · good 1.48 · good 25.30 · good Poor
Mon 01:00 0.02 · good 1.53 · good 25.30 · good Poor
Mon 02:00 0.02 · good 1.62 · good 25.30 · good Poor
Mon 03:00 0.02 · good 1.71 · good 25.30 · good Poor
Mon 04:00 0.02 · good 1.77 · good 25.20 · good Poor
Mon 05:00 0.02 · good 0.82 · good 25.20 · good Poor
Mon 06:00 0.02 · good 1.44 · good 25.20 · good Poor
Mon 07:00 0.04 · good 1.25 · good 25.20 · good Excellent
Mon 08:00 0.04 · good 1.43 · good 25.20 · good Excellent
Mon 09:00 0.04 · good 1.58 · good 25.20 · good Excellent
Mon 10:00 0.02 · good 1.92 · good 25.30 · good Excellent