MARINE REPORT / 72 HOURS

Kefalonia Snorkel Report Today

Greece · Updated Sat 06:36 (EEST) · Source: Snapshot

The skinny

Go in the best window Data updated Sat 06:36 (EEST)

Kefalonia has a usable snorkeling window around Sat 10:00. The main thing to watch is darkness.

Right now (forecast)

Good · 6.9/10

Sat 09:00 (EEST)

Later today

Excellent · 7.4/10

Sat 13:00 (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 10:00

Main risk: Darkness

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

Best afternoon signal: Sat 13:00 (Excellent). Peak afternoon wind is about 2.9 m/s.

Email me when it is good

Sunrise

07:48

Sunset

18:57

Water

23.6°C

Max air

15.8°C

Sky

Clear

0% cloud

Good model window in the next 72 hours

Next good model window: Sat 10:00–18:00 (46% 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 10:00 and lasts until 18:00.

Why this verdict

Main blockers across the next 72 hours:

  • Darkness (37 hours)
  • Tide/current (4 hours)
  • Waves (2 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

Mon 09:00 – Thu 09:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.64 around Tue 08:00; 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 0.4m to 0.56m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.02 to 4.57m/s).

Tides range from -0.46m to -0.31m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview
Good 🌟 Good
Good 🌟 Good
Fair ⚠️ Fair
Good 🌟 Good
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
Good 🌟 Good
Good 🌟 Good
Good 🌟 Good
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
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
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
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
Mon 11:00 0.54 · high 3.36 · good 24.40 · good Fair
Mon 12:00 0.52 · high 3.26 · good 24.50 · good Good
Mon 13:00 0.54 · high 3.42 · good 24.50 · good Fair
Mon 14:00 0.48 · high 4.07 · good 24.50 · good Fair
Mon 15:00 0.48 · high 4.57 · good 24.60 · good Fair
Mon 16:00 0.50 · high 4.57 · good 24.60 · good Fair
Mon 17:00 0.50 · high 4.57 · good 24.50 · good Fair
Mon 18:00 0.52 · high 4.20 · good 24.50 · good Fair
Mon 19:00 0.52 · high 3.48 · good 24.50 · good Fair
Mon 20:00 0.54 · high 3.26 · good 24.40 · good Poor
Mon 21:00 0.52 · high 3.00 · good 24.40 · good Poor
Mon 22:00 0.50 · high 2.92 · good 24.40 · good Poor
Mon 23:00 0.50 · high 2.22 · good 24.40 · good Poor
Tue 00:00 0.48 · high 2.19 · good 24.40 · good Poor
Tue 01:00 0.46 · high 2.52 · good 24.40 · good Poor
Tue 02:00 0.44 · high 2.02 · good 24.40 · good Poor
Tue 03:00 0.42 · high 2.08 · good 24.40 · good Poor
Tue 04:00 0.42 · high 2.08 · good 24.40 · good Poor
Tue 05:00 0.40 · high 2.90 · good 24.40 · good Poor
Tue 06:00 0.40 · high 3.11 · good 24.40 · good Poor
Tue 07:00 0.40 · high 3.41 · good 24.40 · good Poor
Tue 08:00 0.40 · high 3.28 · good 24.40 · good Good
Tue 09:00 0.40 · high 3.06 · good 24.40 · good Good
Tue 10:00 0.42 · high 3.54 · good 24.40 · good Good
Tue 11:00 0.44 · high 4.34 · good 24.40 · good Good
Tue 12:00 0.46 · high 7.61 · high 24.40 · good Fair
Tue 13:00 0.50 · high 7.96 · high 24.40 · good Fair
Tue 14:00 0.44 · high 8.32 · high 24.30 · good Fair
Tue 15:00 0.46 · high 8.58 · high 24.30 · good Fair
Tue 16:00 0.50 · high 8.64 · high 24.30 · good Fair
Tue 17:00 0.52 · high 8.49 · high 24.30 · good Fair
Tue 18:00 0.56 · high 8.07 · high 24.20 · good Fair
Tue 19:00 0.58 · high 7.32 · high 24.20 · good Fair
Tue 20:00 0.52 · high 3.32 · good 24.20 · good Poor
Tue 21:00 0.60 · high 3.82 · good 24.20 · good Poor
Tue 22:00 0.68 · high 3.12 · good 24.20 · good Poor
Tue 23:00 0.78 · high 3.02 · good 24.10 · good Poor
Wed 00:00 0.86 · high 3.31 · good 24.10 · good Poor
Wed 01:00 0.88 · high 3.13 · good 24.10 · good Poor
Wed 02:00 0.92 · high 2.85 · good 24.00 · good Poor
Wed 03:00 0.94 · high 2.20 · good 24.00 · good Poor
Wed 04:00 0.92 · high 2.10 · good 24.00 · good Poor
Wed 05:00 0.92 · high 2.57 · good 24.00 · good Poor
Wed 06:00 0.90 · high 2.53 · good 24.00 · good Poor
Wed 07:00 0.88 · high 2.38 · good 23.90 · good Poor
Wed 08:00 0.88 · high 2.34 · good 23.90 · good Fair
Wed 09:00 0.86 · high 2.16 · good 23.90 · good Fair
Wed 10:00 0.86 · high 2.53 · good 23.90 · good Fair
Wed 11:00 0.88 · high 3.11 · good 23.90 · good Fair
Wed 12:00 0.88 · high 3.45 · good 24.00 · good Fair
Wed 13:00 0.88 · high 4.89 · good 24.00 · good Fair
Wed 14:00 0.88 · high 5.55 · high 24.00 · good Fair
Wed 15:00 0.84 · high 5.92 · high 24.10 · good Fair
Wed 16:00 0.80 · high 5.10 · good 24.10 · good Fair
Wed 17:00 0.76 · high 5.88 · high 24.00 · good Fair
Wed 18:00 0.72 · high 5.06 · good 24.00 · good Fair
Wed 19:00 0.70 · high 2.77 · good 24.00 · good Fair
Wed 20:00 0.68 · high 2.12 · good 24.00 · good Poor
Wed 21:00 0.66 · high 2.15 · good 24.00 · good Poor
Wed 22:00 0.64 · high 2.15 · good 24.00 · good Poor
Wed 23:00 0.62 · high 2.39 · good 24.00 · good Poor
Thu 00:00 0.60 · high 2.47 · good 24.00 · good Poor
Thu 01:00 0.60 · high 2.39 · good 24.00 · good Poor
Thu 02:00 0.58 · high 2.30 · good 24.00 · good Poor
Thu 03:00 0.54 · high 2.25 · good 24.00 · good Poor
Thu 04:00 0.52 · high 2.30 · good 24.00 · good Poor
Thu 05:00 0.52 · high 2.36 · good 24.00 · good Poor
Thu 06:00 0.50 · high 2.11 · good 23.90 · good Poor
Thu 07:00 0.48 · high 2.02 · good 23.90 · good Poor
Thu 08:00 0.48 · high 2.08 · good 23.90 · good Good