Can you snorkel in Kefalonia today?

Conditions look marginal right now — no clearly safe snorkeling window is forecast in Kefalonia over the next 72 hours. Check the hourly table for the calmest period.

What is the best time of day to snorkel in Kefalonia?

Snorkel during daylight, ideally in the morning before the wind picks up, and around high slack tide when water is clearest and currents are weakest. SnorkelForecast scores every daylight hour in Kefalonia so you can pick the calmest window.

What is the best tide for snorkeling?

High slack tide — within about an hour of the high-tide peak when currents are weakest — is the safest, clearest window. Strong low tides, strong tidal flow near channels or headlands, and large tidal-range days reduce score.

Kefalonia Snorkel Report Today

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

The skinny

Marginal Report Thu 02:11

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

20:55

Water

27.1°C

Max air

29.8°C

Sky

Clear

22% 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 (28 hours)
Waves (23 hours)
Darkness (14 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

Sat 23:00 – Tue 23:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.64 around Sun 18:00; 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 0.12m to 0.22m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 11.2 to 28.8m/s).

Tides range from -0.6m to -0.46m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview

Sat 23:00 poor ❌ Limited

Sun 00:00 poor ❌ Limited

Sun 01:00 poor ❌ Limited

Sun 02:00 poor ❌ Limited

Sun 03:00 poor ❌ Limited

Sun 04:00 fair ⚠️ Fair

Sun 05:00 fair ⚠️ Fair

Sun 06:00 fair ⚠️ Fair

Sun 07:00 fair ⚠️ Fair

Sun 08:00 fair ⚠️ Fair

Sun 09:00 fair ⚠️ Fair

Sun 10:00 fair ⚠️ Fair

Sun 11:00 fair ⚠️ Fair

Sun 12:00 fair ⚠️ Fair

Sun 13:00 fair ⚠️ Fair

Sun 14:00 good 🌟 Good

Sun 15:00 good 🌟 Good

Sun 16:00 fair ⚠️ Fair

Sun 17:00 fair ⚠️ Fair

Sun 18:00 fair ⚠️ Fair

Sun 19:00 poor ❌ Limited

Sun 20:00 poor ❌ Limited

Sun 21:00 poor ❌ Limited

Sun 22:00 poor ❌ Limited

Sun 23:00 poor ❌ Limited

Mon 00:00 poor ❌ Limited

Mon 01:00 poor ❌ Limited

Mon 02:00 poor ❌ Limited

Mon 03:00 poor ❌ Limited

Mon 04:00 fair ⚠️ Fair

Mon 05:00 fair ⚠️ Fair

Mon 06:00 fair ⚠️ Fair

Mon 07:00 fair ⚠️ Fair

Mon 08:00 fair ⚠️ Fair

Mon 09:00 fair ⚠️ Fair

Mon 10:00 fair ⚠️ Fair

Mon 11:00 good 🌟 Good

Mon 12:00 good 🌟 Good

Mon 13:00 good 🌟 Good

Mon 14:00 good 🌟 Good

Mon 15:00 good 🌟 Good

Mon 16:00 good 🌟 Good

Mon 17:00 good 🌟 Good

Mon 18:00 good 🌟 Good

Mon 19:00 poor ❌ Limited

Mon 20:00 poor ❌ Limited

Mon 21:00 poor ❌ Limited

Mon 22:00 poor ❌ Limited

Mon 23:00 poor ❌ Limited

Tue 00:00 poor ❌ Limited

Tue 01:00 poor ❌ Limited

Tue 02:00 poor ❌ Limited

Tue 03:00 poor ❌ Limited

Tue 04:00 fair ⚠️ Fair

Tue 05:00 fair ⚠️ Fair

Tue 06:00 fair ⚠️ Fair

Tue 07:00 fair ⚠️ Fair

Tue 08:00 fair ⚠️ Fair

Tue 09:00 fair ⚠️ Fair

Tue 10:00 fair ⚠️ Fair

Tue 11:00 good 🌟 Good

Tue 12:00 excellent ✅ Excellent

Tue 13:00 fair ⚠️ Fair

Tue 14:00 fair ⚠️ Fair

Tue 15:00 fair ⚠️ Fair

Tue 16:00 good 🌟 Good

Tue 17:00 fair ⚠️ Fair

Tue 18:00 fair ⚠️ Fair

Tue 19:00 poor ❌ Limited

Tue 20:00 poor ❌ Limited

Tue 21:00 poor ❌ Limited

Tue 22:00 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
Sat 23:00	0.22 · good	11.20 · high	26.90 · good	poor
Sun 00:00	0.22 · good	12.00 · high	26.80 · good	poor
Sun 01:00	0.20 · good	12.20 · high	26.70 · good	poor
Sun 02:00	0.20 · good	12.70 · high	26.60 · good	poor
Sun 03:00	0.18 · good	12.70 · high	26.50 · good	poor
Sun 04:00	0.16 · good	13.50 · high	26.40 · good	fair
Sun 05:00	0.16 · good	14.00 · high	26.30 · good	fair
Sun 06:00	0.14 · good	19.40 · high	26.30 · good	fair
Sun 07:00	0.14 · good	25.50 · high	26.40 · good	fair
Sun 08:00	0.14 · good	28.80 · high	26.60 · good	fair
Sun 09:00	0.14 · good	27.60 · high	26.80 · good	fair
Sun 10:00	0.14 · good	26.50 · high	27.10 · good	fair
Sun 11:00	0.16 · good	27.80 · high	27.20 · good	fair
Sun 12:00	0.16 · good	27.40 · high	27.40 · good	fair
Sun 13:00	0.14 · good	26.30 · high	27.40 · good	fair
Sun 14:00	0.14 · good	26.00 · high	27.50 · good	good
Sun 15:00	0.12 · good	23.50 · high	27.50 · good	good
Sun 16:00	0.12 · good	19.20 · high	27.40 · good	fair
Sun 17:00	0.14 · good	14.00 · high	27.40 · good	fair
Sun 18:00	0.14 · good	16.10 · high	27.30 · good	fair
Sun 19:00	0.14 · good	17.80 · high	27.30 · good	poor
Sun 20:00	0.14 · good	16.60 · high	27.20 · good	poor
Sun 21:00	0.14 · good	15.10 · high	27.00 · good	poor
Sun 22:00	0.14 · good	13.20 · high	26.90 · good	poor
Sun 23:00	0.14 · good	13.20 · high	26.80 · good	poor
Mon 00:00	0.14 · good	13.00 · high	26.70 · good	poor
Mon 01:00	0.14 · good	13.20 · high	26.60 · good	poor
Mon 02:00	0.12 · good	13.80 · high	26.40 · good	poor
Mon 03:00	0.12 · good	13.80 · high	26.30 · good	poor
Mon 04:00	0.12 · good	14.00 · high	26.20 · good	fair
Mon 05:00	0.10 · good	13.70 · high	26.10 · good	fair
Mon 06:00	0.10 · good	13.80 · high	26.10 · good	fair
Mon 07:00	0.10 · good	16.70 · high	26.10 · good	fair
Mon 08:00	0.08 · good	18.50 · high	26.30 · good	fair
Mon 09:00	0.08 · good	21.50 · high	26.40 · good	fair
Mon 10:00	0.08 · good	21.50 · high	26.60 · good	fair
Mon 11:00	0.08 · good	18.40 · high	26.70 · good	good
Mon 12:00	0.08 · good	11.30 · high	26.80 · good	good
Mon 13:00	0.10 · good	5.20 · good	26.80 · good	good
Mon 14:00	0.12 · good	5.00 · good	26.70 · good	good
Mon 15:00	0.14 · good	1.10 · good	26.70 · good	good
Mon 16:00	0.14 · good	2.60 · good	26.60 · good	good
Mon 17:00	0.12 · good	5.80 · high	26.50 · good	good
Mon 18:00	0.12 · good	8.00 · high	26.40 · good	good
Mon 19:00	0.12 · good	9.60 · high	26.40 · good	poor
Mon 20:00	0.12 · good	10.70 · high	26.30 · good	poor
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