MARINE REPORT / 72 HOURS

Kefalonia Snorkel Report Today

Greece · Updated Sat 09:43 (EEST) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 09:43 (EEST)

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

Right now (forecast)

Excellent · 7.3/10

Sat 11:00 (EEST)

Later today

Excellent · 7.4/10

Sat 12:00 (EEST)

Next three days

Excellent · 9.4/10

Mon 10:00 (EEST)

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

Score: 7.4/10

Best time: Sat 12:00

Main risk: Darkness

No useful morning window is showing yet.

Best afternoon signal: Sat 12:00 (Excellent). Peak afternoon wind is about 2.8 m/s.

Email me when it is good

Sunrise

07:48

Sunset

18:57

Water

23.7°C

Max air

15.9°C

Sky

Clear

11% cloud

Good model window in the next 72 hours

Next good model window: Sat 12:00–18:00 (43% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Saturday

✅ Excellent conditions

Main blocker: Darkness

Sunday

✅ Excellent conditions

Main blocker: Darkness

Monday

✅ Excellent conditions

Main blocker: Darkness

Best available hours

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

Why this verdict

Main blockers across the next 72 hours:

  • Darkness (39 hours)
  • Tide/current (4 hours)

Jellyfish drift risk

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

Low · 20/100

Low peak drift risk around Sat 18:00.

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

Sat 19:00, Mon 11:00

Nearby alternatives in Greece

Zakynthos - Navagio

36 km away

✅ Good

Zakynthos

45 km away

✅ Good

Lefkada

60 km away

✅ Good

Skiathos

277 km away

✅ Good

Advanced forecast data

Viewing historical data

Fri 11:00 – Mon 11:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.6 around Fri 17:00; 12 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 0.38m to 0.56m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.51 to 3.11m/s).

Tides range from -0.52m to -0.35m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
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
Fair ⚠️ Fair
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 11:00 0.56 · high 2.34 · good 24.50 · good Fair
Fri 12:00 0.56 · high 2.47 · good 24.60 · good Fair
Fri 13:00 0.56 · high 3.10 · good 24.60 · good Fair
Fri 14:00 0.48 · high 2.69 · good 24.60 · good Fair
Fri 15:00 0.48 · high 1.77 · good 24.60 · good Good
Fri 16:00 0.48 · high 1.21 · good 24.60 · good Good
Fri 17:00 0.48 · high 0.58 · good 24.60 · good Good
Fri 18:00 0.48 · high 0.86 · good 24.60 · good Good
Fri 19:00 0.48 · high 0.72 · good 24.60 · good Good
Fri 20:00 0.46 · high 0.51 · good 24.50 · good Poor
Fri 21:00 0.46 · high 0.94 · good 24.50 · good Poor
Fri 22:00 0.46 · high 1.75 · good 24.50 · good Poor
Fri 23:00 0.44 · high 1.91 · good 24.50 · good Poor
Sat 00:00 0.44 · high 2.59 · good 24.50 · good Poor
Sat 01:00 0.44 · high 2.25 · good 24.50 · good Poor
Sat 02:00 0.42 · high 1.24 · good 24.50 · good Poor
Sat 03:00 0.42 · high 1.62 · good 24.50 · good Poor
Sat 04:00 0.42 · high 1.50 · good 24.50 · good Poor
Sat 05:00 0.40 · high 0.85 · good 24.50 · good Poor
Sat 06:00 0.40 · high 0.67 · good 24.50 · good Poor
Sat 07:00 0.40 · high 1.41 · good 24.50 · good Poor
Sat 08:00 0.38 · high 2.90 · good 24.50 · good Good
Sat 09:00 0.38 · high 2.75 · good 24.50 · good Good
Sat 10:00 0.38 · high 3.11 · good 24.50 · good Good
Sat 11:00 0.36 · good 1.77 · good 24.50 · good Good
Sat 12:00 0.36 · good 2.50 · good 24.50 · good Good
Sat 13:00 0.36 · good 1.77 · good 24.50 · good Good
Sat 14:00 0.38 · high 0.92 · good 24.80 · good Good
Sat 15:00 0.40 · high 1.60 · good 24.90 · good Good
Sat 16:00 0.40 · high 1.96 · good 24.90 · good Good
Sat 17:00 0.38 · high 3.21 · good 24.80 · good Good
Sat 18:00 0.38 · high 2.62 · good 24.80 · good Good
Sat 19:00 0.40 · high 2.51 · good 24.70 · good Good
Sat 20:00 0.28 · good 1.53 · good 24.70 · good Poor
Sat 21:00 0.28 · good 1.58 · good 24.60 · good Poor
Sat 22:00 0.30 · good 2.15 · good 24.60 · good Poor
Sat 23:00 0.34 · good 2.00 · good 24.60 · good Poor
Sun 00:00 0.36 · good 2.11 · good 24.60 · good Poor
Sun 01:00 0.42 · high 2.20 · good 24.50 · good Poor
Sun 02:00 0.46 · high 2.61 · good 24.50 · good Poor
Sun 03:00 0.52 · high 3.11 · good 24.50 · good Poor
Sun 04:00 0.58 · high 3.13 · good 24.50 · good Poor
Sun 05:00 0.66 · high 3.30 · good 24.50 · good Poor
Sun 06:00 0.72 · high 2.86 · good 24.50 · good Poor
Sun 07:00 0.76 · high 2.60 · good 24.50 · good Poor
Sun 08:00 0.82 · high 2.69 · good 24.50 · good Fair
Sun 09:00 0.86 · high 2.83 · good 24.50 · good Fair
Sun 10:00 0.84 · high 2.80 · good 24.60 · good Fair
Sun 11:00 0.80 · high 3.06 · good 24.60 · good Fair
Sun 12:00 0.78 · high 3.29 · good 24.60 · good Fair
Sun 13:00 0.74 · high 3.29 · good 24.70 · good Fair
Sun 14:00 0.80 · high 3.29 · good 24.60 · good Fair
Sun 15:00 0.78 · high 3.28 · good 24.60 · good Fair
Sun 16:00 0.76 · high 2.97 · good 24.60 · good Fair
Sun 17:00 0.74 · high 2.86 · good 24.60 · good Fair
Sun 18:00 0.72 · high 2.83 · good 24.50 · good Fair
Sun 19:00 0.78 · high 1.70 · good 24.50 · good Fair
Sun 20:00 0.78 · high 1.93 · good 24.40 · good Poor
Sun 21:00 0.76 · high 1.92 · good 24.40 · good Poor
Sun 22:00 0.74 · high 2.05 · good 24.40 · good Poor
Sun 23:00 0.74 · high 1.86 · good 24.40 · good Poor
Mon 00:00 0.72 · high 2.36 · good 24.40 · good Poor
Mon 01:00 0.72 · high 2.92 · good 24.40 · good Poor
Mon 02:00 0.70 · high 3.00 · good 24.40 · good Poor
Mon 03:00 0.70 · high 2.83 · good 24.40 · good Poor
Mon 04:00 0.68 · high 2.75 · good 24.40 · good Poor
Mon 05:00 0.66 · high 3.49 · good 24.40 · good Poor
Mon 06:00 0.64 · high 4.16 · good 24.40 · good Poor
Mon 07:00 0.62 · high 3.18 · good 24.40 · good Poor
Mon 08:00 0.58 · high 2.83 · good 24.40 · good Fair
Mon 09:00 0.56 · high 2.26 · good 24.40 · good Good
Mon 10:00 0.54 · high 2.58 · good 24.40 · good Good