MARINE REPORT / 72 HOURS

Piran Snorkel Report Today

Slovenia · Updated Sat 08:43 (CEST) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 08:43 (CEST)

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

Right now (forecast)

Excellent · 8.6/10

Sat 10:00 (CEST)

Later today

Excellent · 9.0/10

Sat 18:00 (CEST)

Next three days

Excellent · 9.4/10

Mon 18:00 (CEST)

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

Score: 9.0/10

Best time: Sat 11:00

Main risk: Tide/Current

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

Best afternoon signal: Sat 18:00 (Excellent). Peak afternoon wind is about 2.1 m/s.

Email me when it is good

Sunrise

07:24

Sunset

18:17

Water

22.2°C

Max air

19.7°C

Sky

Cloudy

98% cloud

Good model window in the next 72 hours

Next good model window: Sat 11:00–18:00 (43% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

✅ Excellent conditions

Main blocker: Tide/current

Sunday

✅ Excellent conditions

Main blocker: Darkness

Monday

✅ Excellent conditions

Main blocker: Darkness

Best available hours

The next good model window starts at Sat 11:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Darkness (39 hours)
  • Tide/current (19 hours)

Jellyfish drift risk

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

Low · 20/100

Low peak drift risk around Sat 15:00.

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

Sat 11:00, Mon 06:00, Mon 17:00

Nearby alternatives in Slovenia

No nearby alternatives available.

Advanced forecast data

Viewing historical data

Fri 10:00 – Mon 10:00 (CEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.74 around Sat 08:00; 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.

16/24 sampled hours stay at or below 0.36m (range 0.18m to 0.52m).

Wind is at or below 5.4m/s in 20/24 sampled hours (range 2.55 to 5.91m/s).

Tides range from -0.89m to 0.1m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Excellent ✅ Excellent
Excellent ✅ Excellent
Excellent ✅ Excellent
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Good 🌟 Good
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 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 0.44 · high 5.22 · good 22.70 · good Good
Fri 11:00 0.48 · high 5.80 · high 22.70 · good Fair
Fri 12:00 0.52 · high 4.11 · good 22.70 · good Fair
Fri 13:00 0.40 · high 5.19 · good 22.80 · good Fair
Fri 14:00 0.42 · high 5.41 · high 22.80 · good Fair
Fri 15:00 0.44 · high 5.64 · high 22.80 · good Fair
Fri 16:00 0.48 · high 5.91 · high 22.80 · good Fair
Fri 17:00 0.50 · high 4.83 · good 22.80 · good Fair
Fri 18:00 0.34 · good 5.05 · good 22.80 · good Fair
Fri 19:00 0.30 · good 4.12 · good 22.70 · good Poor
Fri 20:00 0.28 · good 3.57 · good 22.70 · good Poor
Fri 21:00 0.28 · good 3.11 · good 22.70 · good Poor
Fri 22:00 0.26 · good 3.32 · good 22.70 · good Poor
Fri 23:00 0.26 · good 3.66 · good 22.70 · good Poor
Sat 00:00 0.24 · good 3.75 · good 22.60 · good Poor
Sat 01:00 0.24 · good 3.05 · good 22.60 · good Poor
Sat 02:00 0.22 · good 2.86 · good 22.60 · good Poor
Sat 03:00 0.22 · good 2.66 · good 22.60 · good Poor
Sat 04:00 0.20 · good 3.96 · good 22.50 · good Poor
Sat 05:00 0.20 · good 3.94 · good 22.50 · good Poor
Sat 06:00 0.20 · good 3.45 · good 22.50 · good Poor
Sat 07:00 0.18 · good 2.68 · good 22.50 · good Poor
Sat 08:00 0.18 · good 2.55 · good 22.50 · good Excellent
Sat 09:00 0.18 · good 3.00 · good 22.50 · good Excellent
Sat 10:00 0.16 · good 1.77 · good 22.50 · good Excellent
Sat 11:00 0.16 · good 2.14 · good 22.50 · good Good
Sat 12:00 0.14 · good 1.80 · good 22.60 · good Good
Sat 13:00 0.28 · good 1.36 · good 22.80 · good Good
Sat 14:00 0.26 · good 1.00 · good 22.80 · good Good
Sat 15:00 0.24 · good 1.26 · good 22.80 · good Good
Sat 16:00 0.22 · good 5.03 · good 22.80 · good Good
Sat 17:00 0.20 · good 4.27 · good 22.70 · good Good
Sat 18:00 0.08 · good 1.22 · good 22.70 · good Excellent
Sat 19:00 0.08 · good 1.61 · good 22.70 · good Poor
Sat 20:00 0.08 · good 1.68 · good 22.70 · good Poor
Sat 21:00 0.16 · good 1.78 · good 22.70 · good Poor
Sat 22:00 0.22 · good 1.92 · good 22.70 · good Poor
Sat 23:00 0.30 · good 1.86 · good 22.60 · good Poor
Sun 00:00 0.30 · good 2.18 · good 22.60 · good Poor
Sun 01:00 0.30 · good 2.92 · good 22.60 · good Poor
Sun 02:00 0.30 · good 2.76 · good 22.60 · good Poor
Sun 03:00 0.28 · good 2.56 · good 22.60 · good Poor
Sun 04:00 0.28 · good 2.42 · good 22.60 · good Poor
Sun 05:00 0.26 · good 2.16 · good 22.60 · good Poor
Sun 06:00 0.24 · good 1.88 · good 22.60 · good Poor
Sun 07:00 0.22 · good 2.06 · good 22.60 · good Poor
Sun 08:00 0.20 · good 2.04 · good 22.60 · good Excellent
Sun 09:00 0.18 · good 2.04 · good 22.60 · good Excellent
Sun 10:00 0.16 · good 3.34 · good 22.60 · good Excellent
Sun 11:00 0.14 · good 3.54 · good 22.70 · good Good
Sun 12:00 0.12 · good 2.97 · good 22.70 · good Good
Sun 13:00 0.30 · good 1.68 · good 22.80 · good Good
Sun 14:00 0.26 · good 2.34 · good 22.80 · good Good
Sun 15:00 0.22 · good 2.51 · good 22.80 · good Good
Sun 16:00 0.18 · good 2.18 · good 22.80 · good Good
Sun 17:00 0.14 · good 1.46 · good 22.80 · good Excellent
Sun 18:00 0.12 · good 1.79 · good 22.80 · good Excellent
Sun 19:00 0.10 · good 0.32 · good 22.70 · good Poor
Sun 20:00 0.08 · good 0.20 · good 22.70 · good Poor
Sun 21:00 0.08 · good 1.03 · good 22.70 · good Poor
Sun 22:00 0.10 · good 1.43 · good 22.70 · good Poor
Sun 23:00 0.10 · good 1.68 · good 22.70 · good Poor
Mon 00:00 0.10 · good 1.70 · good 22.70 · good Poor
Mon 01:00 0.12 · good 1.96 · good 22.60 · good Poor
Mon 02:00 0.12 · good 2.38 · good 22.60 · good Poor
Mon 03:00 0.12 · good 2.75 · good 22.60 · good Poor
Mon 04:00 0.14 · good 2.44 · good 22.60 · good Poor
Mon 05:00 0.14 · good 2.85 · good 22.60 · good Poor
Mon 06:00 0.20 · good 3.09 · good 22.60 · good Poor
Mon 07:00 0.24 · good 3.14 · good 22.60 · good Poor
Mon 08:00 0.30 · good 3.13 · good 22.60 · good Good
Mon 09:00 0.32 · good 3.89 · good 22.60 · good Good