MARINE REPORT / 72 HOURS

Kefalonia Snorkel Report Today

Greece · Updated Sun 02:02 (EEST) · Source: Snapshot

The skinny

Go in the best window Data updated Sun 02:02 (EEST)

Kefalonia has a usable snorkeling window around Sun 08:00. The main thing to watch is darkness.

Right now (forecast)

Poor · 0.0/10

Sun 02:00 (EEST)

Later today

Excellent · 8.5/10

Sun 08:00 (EEST)

Next three days

Excellent · 9.2/10

Mon 10:00 (EEST)

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

Score: 8.5/10

Best time: Sun 08:00

Main risk: Darkness

Best morning signal: Sun 08:00 (Excellent).

Best afternoon signal: Sun 12:00 (Excellent). Peak afternoon wind is about 2.7 m/s.

Email me when it is good

Sunrise

07:49

Sunset

18:55

Water

23.6°C

Max air

18.3°C

Sky

Clear

0% cloud

Good model window in the next 72 hours

Next good model window: Sun 08:00–18:00 (46% 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: Darkness

Best available hours

The next good model window starts at Sun 08:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Darkness (38 hours)
  • Tide/current (9 hours)

Jellyfish drift risk

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

Low · 17/100

Low drift risk now.

water is warm enough for occasional jellyfish; 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.

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

Mon 02:00 – Thu 02:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.83 around Mon 12:00; 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.

24/24 sampled hours stay at or below 0.36m (range 0.12m to 0.2m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.92 to 3.19m/s).

Tides range from -0.57m to -0.4m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
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
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
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
Mon 02:00 0.20 · good 3.05 · good 26.00 · good Poor
Mon 03:00 0.20 · good 3.11 · good 26.00 · good Poor
Mon 04:00 0.20 · good 3.19 · good 26.00 · good Poor
Mon 05:00 0.18 · good 3.19 · good 26.00 · good Poor
Mon 06:00 0.18 · good 2.97 · good 26.00 · good Poor
Mon 07:00 0.18 · good 2.97 · good 26.00 · good Poor
Mon 08:00 0.16 · good 2.97 · good 26.00 · good Excellent
Mon 09:00 0.16 · good 2.48 · good 26.00 · good Excellent
Mon 10:00 0.16 · good 2.06 · good 26.00 · good Excellent
Mon 11:00 0.18 · good 1.57 · good 26.00 · good Excellent
Mon 12:00 0.18 · good 0.92 · good 26.10 · good Excellent
Mon 13:00 0.18 · good 1.30 · good 26.10 · good Excellent
Mon 14:00 0.14 · good 2.00 · good 26.20 · good Excellent
Mon 15:00 0.14 · good 2.28 · good 26.20 · good Excellent
Mon 16:00 0.14 · good 2.47 · good 26.20 · good Excellent
Mon 17:00 0.14 · good 2.58 · good 26.10 · good Excellent
Mon 18:00 0.14 · good 2.66 · good 26.10 · good Excellent
Mon 19:00 0.14 · good 2.10 · good 26.00 · good Excellent
Mon 20:00 0.14 · good 2.22 · good 26.00 · good Poor
Mon 21:00 0.14 · good 2.50 · good 26.00 · good Poor
Mon 22:00 0.14 · good 2.51 · good 26.00 · good Poor
Mon 23:00 0.12 · good 2.64 · good 25.90 · good Poor
Tue 00:00 0.12 · good 2.62 · good 25.90 · good Poor
Tue 01:00 0.12 · good 2.34 · good 25.90 · good Poor
Tue 02:00 0.10 · good 2.55 · good 25.90 · good Poor
Tue 03:00 0.10 · good 2.33 · good 25.90 · good Poor
Tue 04:00 0.10 · good 2.26 · good 25.90 · good Poor
Tue 05:00 0.10 · good 2.05 · good 25.90 · good Poor
Tue 06:00 0.10 · good 1.78 · good 25.90 · good Poor
Tue 07:00 0.10 · good 1.64 · good 25.90 · good Poor
Tue 08:00 0.10 · good 1.77 · good 25.90 · good Excellent
Tue 09:00 0.10 · good 1.56 · good 25.90 · good Excellent
Tue 10:00 0.10 · good 1.39 · good 25.90 · good Excellent
Tue 11:00 0.10 · good 1.32 · good 25.90 · good Excellent
Tue 12:00 0.10 · good 0.82 · good 26.00 · good Excellent
Tue 13:00 0.10 · good 1.43 · good 26.00 · good Excellent
Tue 14:00 0.10 · good 2.50 · good 26.00 · good Excellent
Tue 15:00 0.12 · good 2.69 · good 26.00 · good Excellent
Tue 16:00 0.12 · good 3.01 · good 26.00 · good Excellent
Tue 17:00 0.10 · good 2.06 · good 26.00 · good Excellent
Tue 18:00 0.10 · good 2.24 · good 25.90 · good Excellent
Tue 19:00 0.10 · good 2.33 · good 25.90 · good Excellent
Tue 20:00 0.10 · good 1.92 · good 25.90 · good Poor
Tue 21:00 0.10 · good 2.32 · good 25.90 · good Poor
Tue 22:00 0.10 · good 2.47 · good 25.90 · good Poor
Tue 23:00 0.10 · good 2.61 · good 25.80 · good Poor
Wed 00:00 0.10 · good 2.77 · good 25.80 · good Poor
Wed 01:00 0.10 · good 2.55 · good 25.80 · good Poor
Wed 02:00 0.10 · good 2.62 · good 25.80 · good Poor
Wed 03:00 0.10 · good 2.90 · good 25.80 · good Poor
Wed 04:00 0.10 · good 2.97 · good 25.80 · good Poor
Wed 05:00 0.12 · good 2.91 · good 25.70 · good Poor
Wed 06:00 0.12 · good 2.83 · good 25.70 · good Poor
Wed 07:00 0.12 · good 2.83 · good 25.70 · good Poor
Wed 08:00 0.12 · good 2.77 · good 25.70 · good Excellent
Wed 09:00 0.12 · good 2.28 · good 25.70 · good Excellent
Wed 10:00 0.12 · good 2.20 · good 25.70 · good Excellent
Wed 11:00 0.12 · good 2.27 · good 25.80 · good Excellent
Wed 12:00 0.12 · good 2.83 · good 25.80 · good Excellent
Wed 13:00 0.12 · good 3.39 · good 25.90 · good Excellent
Wed 14:00 0.12 · good 3.75 · good 25.90 · good Excellent
Wed 15:00 0.12 · good 4.31 · good 25.90 · good Excellent
Wed 16:00 0.12 · good 5.16 · good 25.90 · good Excellent
Wed 17:00 0.10 · good 6.01 · high 25.90 · good Excellent
Wed 18:00 0.10 · good 3.97 · good 25.90 · good Excellent
Wed 19:00 0.10 · good 3.89 · good 25.80 · good Excellent
Wed 20:00 0.10 · good 3.19 · good 25.80 · good Poor
Wed 21:00 0.10 · good 2.76 · good 25.80 · good Poor
Wed 22:00 0.10 · good 3.06 · good 25.80 · good Poor
Wed 23:00 0.12 · good 2.91 · good 25.70 · good Poor
Thu 00:00 0.12 · good 2.83 · good 25.70 · good Poor
Thu 01:00 0.12 · good 3.19 · good 25.70 · good Poor