SnorkelForecast.com

Kefalonia Snorkel Report Today

Greece · Updated Tue 04:14 (EEST) · Source: Snapshot · Showing fallback/stale data

The skinny

Marginal Report Thu 00:15

Kefalonia looks marginal today. The least-bad daylight window is around Thu 20:00, but tide/current is limiting the forecast.

Score: 5.5/10

Best time: Thu 20:00

Main risk: Tide/Current

Best morning signal: Thu 10:00 (Fair).

Best afternoon signal: Thu 20:00 (Fair). Peak afternoon wind is about 6.7 m/s.

Email me when it is good

Sunrise

06:32

Sunset

20:56

Water

27.3°C

Max air

29.8°C

Sky

Clear

0% cloud

No safe window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Thursday

⚠️ fair conditions

Main blocker: Waves

Friday

❌ poor conditions

Main blocker: Tide/current

Best available hours

  • Thu 17:00 — Fair (0.55) · still limited by waves, tide/current
  • Thu 16:00 — Fair (0.52) · still limited by waves, tide/current
  • Thu 15:00 — Fair (0.51) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Tide/current (30 hours)
  • Waves (25 hours)
  • Darkness (16 hours)

Jellyfish drift risk

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

Low · 34/100

Low drift risk now.

warm water supports seasonal jellyfish activity; 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.

Nearby alternatives in Greece

Zakynthos - Navagio

36 km away

❌ Poor

Zakynthos

45 km away

❌ Poor

Lefkada

60 km away

❌ Poor

Skiathos

277 km away

✅ Good

Advanced forecast data

Viewing historical data

Mon 21:00 – Thu 21:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.79 around Tue 15:00; 15 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 0.14m).

Wind is at or below 5.4m/s in 1/24 sampled hours (range 2.4 to 15.5m/s).

Tides range from -0.58m to -0.43m; 0 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
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
excellent ✅ Excellent
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
good 🌟 Good
good 🌟 Good
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
good 🌟 Good
good 🌟 Good
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
excellent ✅ Excellent
excellent ✅ Excellent
excellent ✅ Excellent
good 🌟 Good
good 🌟 Good
good 🌟 Good
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
good 🌟 Good
good 🌟 Good
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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Mon 21:00 0.12 · good 11.20 · high 26.20 · good poor
Mon 22:00 0.12 · good 10.90 · high 26.20 · good poor
Mon 23:00 0.12 · good 11.50 · high 26.10 · good poor
Tue 00:00 0.12 · good 12.50 · high 26.10 · good poor
Tue 01:00 0.12 · good 12.50 · high 26.00 · good poor
Tue 02:00 0.12 · good 13.00 · high 25.90 · good poor
Tue 03:00 0.12 · good 13.00 · high 25.90 · good poor
Tue 04:00 0.12 · good 12.70 · high 25.80 · good fair
Tue 05:00 0.10 · good 10.90 · high 25.80 · good fair
Tue 06:00 0.10 · good 10.40 · high 25.80 · good fair
Tue 07:00 0.10 · good 12.80 · high 25.90 · good fair
Tue 08:00 0.10 · good 15.50 · high 26.10 · good fair
Tue 09:00 0.10 · good 14.70 · high 26.40 · good fair
Tue 10:00 0.10 · good 12.10 · high 26.60 · good fair
Tue 11:00 0.08 · good 8.20 · high 26.80 · good good
Tue 12:00 0.10 · good 2.40 · good 26.30 · good excellent
Tue 13:00 0.12 · good 9.90 · high 26.30 · good fair
Tue 14:00 0.12 · good 12.20 · high 26.30 · good fair
Tue 15:00 0.14 · good 14.20 · high 26.30 · good fair
Tue 16:00 0.14 · good 14.20 · high 26.30 · good good
Tue 17:00 0.14 · good 11.70 · high 26.30 · good fair
Tue 18:00 0.14 · good 9.10 · high 26.20 · good fair
Tue 19:00 0.12 · good 8.40 · high 26.20 · good poor
Tue 20:00 0.12 · good 10.80 · high 26.10 · good poor
Tue 21:00 0.10 · good 11.70 · high 26.10 · good poor
Tue 22:00 0.10 · good 11.00 · high 26.00 · good poor
Tue 23:00 0.08 · good 11.00 · high 26.00 · good poor
Wed 00:00 0.08 · good 11.50 · high 25.90 · good poor
Wed 01:00 0.08 · good 11.00 · high 25.90 · good poor
Wed 02:00 0.08 · good 9.70 · high 25.80 · good poor
Wed 03:00 0.08 · good 9.70 · high 25.80 · good poor
Wed 04:00 0.08 · good 9.40 · high 25.80 · good good
Wed 05:00 0.10 · good 6.60 · high 25.70 · good good
Wed 06:00 0.10 · good 4.60 · good 25.80 · good excellent
Wed 07:00 0.10 · good 4.50 · good 25.90 · good excellent
Wed 08:00 0.10 · good 5.60 · high 26.00 · good excellent
Wed 09:00 0.10 · good 4.20 · good 26.20 · good excellent
Wed 10:00 0.10 · good 1.10 · good 26.30 · good excellent
Wed 11:00 0.10 · good 8.10 · high 26.50 · good good
Wed 12:00 0.10 · good 14.70 · high 26.50 · good good
Wed 13:00 0.10 · good 17.20 · high 26.50 · good fair
Wed 14:00 0.10 · good 16.50 · high 26.50 · good good
Wed 15:00 0.10 · good 14.40 · high 26.40 · good good
Wed 16:00 0.12 · good 13.00 · high 26.30 · good good
Wed 17:00 0.12 · good 11.80 · high 26.20 · good good
Wed 18:00 0.14 · good 8.60 · high 26.10 · good good
Wed 19:00 0.14 · good 7.30 · high 26.00 · good poor
Wed 20:00 0.16 · good 8.60 · high 25.90 · good poor
Wed 21:00 0.16 · good 8.80 · high 25.90 · good poor
Wed 22:00 0.18 · good 9.10 · high 25.80 · good poor
Wed 23:00 0.18 · good 8.70 · high 25.70 · good poor
Thu 00:00 0.20 · good 7.90 · high 25.70 · good poor
Thu 01:00 0.20 · good 7.90 · high 25.60 · good poor
Thu 02:00 0.20 · good 6.80 · high 25.60 · good poor
Thu 03:00 0.20 · good 5.80 · high 25.60 · good poor
Thu 04:00 0.20 · good 4.30 · good 25.50 · good excellent
Thu 05:00 0.20 · good 3.30 · good 25.60 · good excellent
Thu 06:00 0.20 · good 3.30 · good 25.60 · good excellent
Thu 07:00 0.20 · good 6.70 · high 25.60 · good good
Thu 08:00 0.22 · good 9.50 · high 25.70 · good good
Thu 09:00 0.22 · good 8.50 · high 25.90 · good good
Thu 10:00 0.22 · good 10.40 · high 26.00 · good fair
Thu 11:00 0.22 · good 10.60 · high 26.10 · good fair
Thu 12:00 0.22 · good 11.00 · high 26.10 · good fair
Thu 13:00 0.22 · good 12.00 · high 26.10 · good fair
Thu 14:00 0.24 · good 10.90 · high 26.10 · good fair
Thu 15:00 0.24 · good 9.90 · high 26.10 · good fair
Thu 16:00 0.24 · good 10.20 · high 26.00 · good fair
Thu 17:00 0.24 · good 7.00 · high 25.90 · good good
Thu 18:00 0.24 · good 5.40 · good 25.90 · good good
Thu 19:00 0.24 · good 3.30 · good 25.80 · good poor
Thu 20:00 0.24 · good 2.50 · good 25.80 · good poor