Can you snorkel in Kefalonia today?

Yes. The next good snorkeling window in Kefalonia starts Sun 04:00 and lasts until 17:00. Around 56% of the next 72 hours are suitable.

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 Sat 05:02 (EEST) · Source: Snapshot

The skinny

Go in the best window Report Sun 03:39

Kefalonia has a usable snorkeling window around Sun 07:00. The main thing to watch is tide/current.

Score: 9.5/10

Best time: Sun 07:00

Main risk: Tide/Current

Best morning signal: Sun 09:00 (Excellent).

Best afternoon signal: Sun 12:00 (Excellent). Peak afternoon wind is about 4.3 m/s.

Email me when it is good

Sunrise

06:29

Sunset

20:58

Water

27.5°C

Max air

35.8°C

Sky

Clear

0% cloud

Good window is available today

Next safe window: Sun 04:00–17:00 (56% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Sunday

✅ excellent conditions

Main blocker: Tide/current

Monday

✅ excellent conditions

Main blocker: Tide/current

Tuesday

✅ excellent conditions

Main blocker: Tide/current

Best available hours

Next safe window starts at Sun 04:00 until 17:00.

Why this verdict

Main blockers across the next 72 hours:

Tide/current (44 hours)
Darkness (23 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.

Upcoming high tides

Next early morning high tide: Sun 05:00

Sun 05:00, Sun 17:00

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

Sat 00:00 – Tue 00:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.83 around Sat 11:00; 14 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 0.22m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.22 to 3.89m/s).

Tides range from -0.51m to -0.37m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview

Sat 00:00 poor ❌ Limited

Sat 01:00 poor ❌ Limited

Sat 02:00 poor ❌ Limited

Sat 03:00 poor ❌ Limited

Sat 04:00 excellent ✅ Excellent

Sat 05:00 excellent ✅ Excellent

Sat 06:00 excellent ✅ Excellent

Sat 07:00 excellent ✅ Excellent

Sat 08:00 excellent ✅ Excellent

Sat 09:00 excellent ✅ Excellent

Sat 10:00 excellent ✅ Excellent

Sat 11:00 excellent ✅ Excellent

Sat 12:00 excellent ✅ Excellent

Sat 13:00 excellent ✅ Excellent

Sat 14:00 excellent ✅ Excellent

Sat 15:00 excellent ✅ Excellent

Sat 16:00 excellent ✅ Excellent

Sat 17:00 excellent ✅ Excellent

Sat 18:00 poor ❌ Limited

Sat 19:00 poor ❌ Limited

Sat 20:00 poor ❌ Limited

Sat 21:00 poor ❌ Limited

Sat 22:00 poor ❌ Limited

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 excellent ✅ Excellent

Sun 05:00 excellent ✅ Excellent

Sun 06:00 excellent ✅ Excellent

Sun 07:00 excellent ✅ Excellent

Sun 08:00 excellent ✅ Excellent

Sun 09:00 excellent ✅ Excellent

Sun 10:00 excellent ✅ Excellent

Sun 11:00 excellent ✅ Excellent

Sun 12:00 excellent ✅ Excellent

Sun 13:00 excellent ✅ Excellent

Sun 14:00 excellent ✅ Excellent

Sun 15:00 excellent ✅ Excellent

Sun 16:00 excellent ✅ Excellent

Sun 17:00 excellent ✅ Excellent

Sun 18:00 poor ❌ Limited

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 excellent ✅ Excellent

Mon 05:00 excellent ✅ Excellent

Mon 06:00 excellent ✅ Excellent

Mon 07:00 excellent ✅ Excellent

Mon 08:00 excellent ✅ Excellent

Mon 09:00 excellent ✅ Excellent

Mon 10:00 excellent ✅ Excellent

Mon 11:00 excellent ✅ Excellent

Mon 12:00 excellent ✅ Excellent

Mon 13:00 excellent ✅ Excellent

Mon 14:00 excellent ✅ Excellent

Mon 15:00 excellent ✅ Excellent

Mon 16:00 excellent ✅ Excellent

Mon 17:00 excellent ✅ Excellent

Mon 18:00 poor ❌ Limited

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

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 00:00	0.22 · good	0.22 · good	27.00 · good	poor
Sat 01:00	0.22 · good	0.94 · good	26.90 · good	poor
Sat 02:00	0.20 · good	1.60 · good	26.90 · good	poor
Sat 03:00	0.20 · good	1.50 · good	26.80 · good	poor
Sat 04:00	0.20 · good	1.40 · good	26.80 · good	excellent
Sat 05:00	0.18 · good	0.81 · good	26.80 · good	excellent
Sat 06:00	0.18 · good	0.41 · good	27.00 · good	excellent
Sat 07:00	0.18 · good	1.36 · good	27.10 · good	excellent
Sat 08:00	0.16 · good	1.75 · good	27.30 · good	excellent
Sat 09:00	0.16 · good	2.59 · good	27.50 · good	excellent
Sat 10:00	0.16 · good	2.86 · good	27.70 · good	excellent
Sat 11:00	0.14 · good	3.26 · good	27.90 · good	excellent
Sat 12:00	0.14 · good	3.69 · good	28.00 · good	excellent
Sat 13:00	0.14 · good	3.89 · good	28.00 · good	excellent
Sat 14:00	0.12 · good	3.45 · good	28.00 · good	excellent
Sat 15:00	0.12 · good	3.11 · good	27.90 · good	excellent
Sat 16:00	0.12 · good	2.60 · good	27.90 · good	excellent
Sat 17:00	0.10 · good	2.20 · good	27.80 · good	excellent
Sat 18:00	0.10 · good	1.50 · good	27.70 · good	poor
Sat 19:00	0.10 · good	1.14 · good	27.70 · good	poor
Sat 20:00	0.08 · good	1.49 · good	27.70 · good	poor
Sat 21:00	0.08 · good	1.60 · good	27.60 · good	poor
Sat 22:00	0.08 · good	1.33 · good	27.60 · good	poor
Sat 23:00	0.08 · good	0.76 · good	27.60 · good	poor
Sun 00:00	0.08 · good	0.71 · good	27.50 · good	poor
Sun 01:00	0.08 · good	0.71 · good	27.50 · good	poor
Sun 02:00	0.08 · good	1.13 · good	27.40 · good	poor
Sun 03:00	0.08 · good	1.35 · good	27.30 · good	poor
Sun 04:00	0.08 · good	1.32 · good	27.30 · good	excellent
Sun 05:00	0.08 · good	1.43 · good	27.30 · good	excellent
Sun 06:00	0.08 · good	0.50 · good	27.30 · good	excellent
Sun 07:00	0.08 · good	0.71 · good	27.50 · good	excellent
Sun 08:00	0.10 · good	1.30 · good	27.70 · good	excellent
Sun 09:00	0.10 · good	1.75 · good	27.90 · good	excellent
Sun 10:00	0.10 · good	2.20 · good	28.10 · good	excellent
Sun 11:00	0.10 · good	2.82 · good	28.30 · good	excellent
Sun 12:00	0.10 · good	3.26 · good	28.40 · good	excellent
Sun 13:00	0.10 · good	3.72 · good	28.40 · good	excellent
Sun 14:00	0.12 · good	4.32 · good	28.30 · good	excellent
Sun 15:00	0.12 · good	3.82 · good	28.20 · good	excellent
Sun 16:00	0.12 · good	3.18 · good	28.10 · good	excellent
Sun 17:00	0.14 · good	2.90 · good	27.90 · good	excellent
Sun 18:00	0.14 · good	2.58 · good	27.80 · good	poor
Sun 19:00	0.14 · good	3.07 · good	27.70 · good	poor
Sun 20:00	0.14 · good	3.00 · good	27.70 · good	poor
Sun 21:00	0.14 · good	2.55 · good	27.60 · good	poor
Sun 22:00	0.14 · good	2.55 · good	27.60 · good	poor
Sun 23:00	0.14 · good	2.18 · good	27.50 · good	poor
Mon 00:00	0.14 · good	2.02 · good	27.50 · good	poor
Mon 01:00	0.14 · good	1.89 · good	27.40 · good	poor
Mon 02:00	0.12 · good	1.75 · good	27.40 · good	poor
Mon 03:00	0.12 · good	1.75 · good	27.30 · good	poor
Mon 04:00	0.12 · good	1.89 · good	27.30 · good	excellent
Mon 05:00	0.12 · good	1.72 · good	27.30 · good	excellent
Mon 06:00	0.12 · good	0.76 · good	27.30 · good	excellent
Mon 07:00	0.12 · good	0.32 · good	27.50 · good	excellent
Mon 08:00	0.10 · good	0.63 · good	27.70 · good	excellent
Mon 09:00	0.10 · good	1.10 · good	27.90 · good	excellent
Mon 10:00	0.10 · good	1.82 · good	28.20 · good	excellent
Mon 11:00	0.08 · good	2.09 · good	28.40 · good	excellent
Mon 12:00	0.08 · good	2.57 · good	28.50 · good	excellent
Mon 13:00	0.08 · good	2.82 · good	28.60 · good	excellent
Mon 14:00	0.10 · good	2.81 · good	28.50 · good	excellent
Mon 15:00	0.10 · good	3.01 · good	28.40 · good	excellent
Mon 16:00	0.12 · good	2.67 · good	28.30 · good	excellent
Mon 17:00	0.12 · good	2.16 · good	28.20 · good	excellent
Mon 18:00	0.14 · good	1.49 · good	28.10 · good	poor
Mon 19:00	0.14 · good	1.77 · good	28.10 · good	poor
Mon 20:00	0.12 · good	1.92 · good	28.00 · good	poor
Mon 21:00	0.12 · good	1.61 · good	27.90 · good	poor
Mon 22:00	0.12 · good	1.24 · good	27.80 · good	poor
Mon 23:00	0.12 · good	1.14 · good	27.80 · good	poor