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 Wed 21:11

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

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:32

Sunset

20:56

Water

27.6°C

Max air

27.4°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

Wednesday

❌ poor conditions

Main blocker: Waves

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 (33 hours)
Waves (28 hours)
Darkness (19 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

Thu 18:00 – Sun 18:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.71 around Fri 07:00; 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.

18/24 sampled hours stay at or below 0.36m (range 0.24m to 0.46m).

Wind is at or below 5.4m/s in 12/24 sampled hours (range 1.8 to 14.3m/s).

Tides range from -0.56m to -0.4m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview

Thu 18:00 good 🌟 Good

Thu 19:00 poor ❌ Limited

Thu 20:00 poor ❌ Limited

Thu 21:00 poor ❌ Limited

Thu 22:00 poor ❌ Limited

Thu 23:00 poor ❌ Limited

Fri 00:00 poor ❌ Limited

Fri 01:00 poor ❌ Limited

Fri 02:00 poor ❌ Limited

Fri 03:00 poor ❌ Limited

Fri 04:00 good 🌟 Good

Fri 05:00 good 🌟 Good

Fri 06:00 good 🌟 Good

Fri 07:00 fair ⚠️ Fair

Fri 08:00 fair ⚠️ Fair

Fri 09:00 fair ⚠️ Fair

Fri 10:00 fair ⚠️ Fair

Fri 11:00 fair ⚠️ Fair

Fri 12:00 fair ⚠️ Fair

Fri 13:00 fair ⚠️ Fair

Fri 14:00 fair ⚠️ Fair

Fri 15:00 fair ⚠️ Fair

Fri 16:00 fair ⚠️ Fair

Fri 17:00 fair ⚠️ Fair

Fri 18:00 good 🌟 Good

Fri 19:00 poor ❌ Limited

Fri 20:00 poor ❌ Limited

Fri 21:00 poor ❌ Limited

Fri 22:00 poor ❌ Limited

Fri 23:00 poor ❌ Limited

Sat 00:00 poor ❌ Limited

Sat 01:00 poor ❌ Limited

Sat 02:00 poor ❌ Limited

Sat 03:00 poor ❌ Limited

Sat 04:00 good 🌟 Good

Sat 05:00 good 🌟 Good

Sat 06:00 good 🌟 Good

Sat 07:00 good 🌟 Good

Sat 08:00 good 🌟 Good

Sat 09:00 good 🌟 Good

Sat 10:00 good 🌟 Good

Sat 11:00 fair ⚠️ Fair

Sat 12:00 fair ⚠️ Fair

Sat 13:00 fair ⚠️ Fair

Sat 14:00 fair ⚠️ Fair

Sat 15:00 fair ⚠️ Fair

Sat 16:00 fair ⚠️ Fair

Sat 17:00 fair ⚠️ Fair

Sat 18:00 fair ⚠️ Fair

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 fair ⚠️ Fair

Sun 05:00 fair ⚠️ Fair

Sun 06:00 fair ⚠️ Fair

Sun 07:00 poor ❌ Limited

Sun 08:00 fair ⚠️ Fair

Sun 09:00 fair ⚠️ Fair

Sun 10:00 fair ⚠️ Fair

Sun 11:00 fair ⚠️ Fair

Sun 12:00 poor ❌ Limited

Sun 13:00 poor ❌ Limited

Sun 14:00 poor ❌ Limited

Sun 15:00 fair ⚠️ Fair

Sun 16:00 fair ⚠️ Fair

Sun 17:00 fair ⚠️ Fair

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
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
Thu 21:00	0.24 · good	1.80 · good	25.70 · good	poor
Thu 22:00	0.24 · good	2.30 · good	25.60 · good	poor
Thu 23:00	0.24 · good	2.30 · good	25.60 · good	poor
Fri 00:00	0.24 · good	3.90 · good	25.50 · good	poor
Fri 01:00	0.24 · good	4.00 · good	25.50 · good	poor
Fri 02:00	0.24 · good	5.40 · good	25.50 · good	poor
Fri 03:00	0.24 · good	4.80 · good	25.40 · good	poor
Fri 04:00	0.24 · good	4.50 · good	25.40 · good	good
Fri 05:00	0.24 · good	3.30 · good	25.40 · good	good
Fri 06:00	0.24 · good	6.20 · high	25.40 · good	good
Fri 07:00	0.26 · good	7.60 · high	25.50 · good	fair
Fri 08:00	0.26 · good	9.00 · high	25.60 · good	fair
Fri 09:00	0.28 · good	11.70 · high	25.70 · good	fair
Fri 10:00	0.32 · good	12.40 · high	25.80 · good	fair
Fri 11:00	0.36 · good	11.60 · high	26.90 · good	fair
Fri 12:00	0.38 · high	13.80 · high	27.00 · good	fair
Fri 13:00	0.40 · high	14.30 · high	27.00 · good	fair
Fri 14:00	0.42 · high	14.10 · high	26.90 · good	fair
Fri 15:00	0.44 · high	13.30 · high	26.80 · good	fair
Fri 16:00	0.44 · high	11.30 · high	26.70 · good	fair
Fri 17:00	0.46 · high	8.10 · high	26.60 · good	fair
Fri 18:00	0.46 · high	4.80 · good	26.50 · good	good
Fri 19:00	0.46 · high	3.60 · good	26.40 · good	poor
Fri 20:00	0.44 · high	4.40 · good	26.40 · good	poor
Fri 21:00	0.44 · high	5.50 · high	26.30 · good	poor
Fri 22:00	0.44 · high	5.50 · high	26.20 · good	poor
Fri 23:00	0.42 · high	5.70 · high	26.10 · good	poor
Sat 00:00	0.42 · high	5.40 · good	26.10 · good	poor
Sat 01:00	0.42 · high	5.80 · high	26.00 · good	poor
Sat 02:00	0.42 · high	5.20 · good	26.00 · good	poor
Sat 03:00	0.42 · high	6.20 · high	25.90 · good	poor
Sat 04:00	0.44 · high	6.00 · high	25.90 · good	good
Sat 05:00	0.44 · high	4.20 · good	25.90 · good	good
Sat 06:00	0.46 · high	2.30 · good	26.00 · good	good
Sat 07:00	0.46 · high	1.90 · good	26.10 · good	good
Sat 08:00	0.46 · high	1.80 · good	26.30 · good	good
Sat 09:00	0.46 · high	1.10 · good	26.60 · good	good
Sat 10:00	0.46 · high	4.60 · good	26.80 · good	good
Sat 11:00	0.46 · high	5.80 · high	27.10 · good	fair
Sat 12:00	0.46 · high	6.60 · high	27.20 · good	fair
Sat 13:00	0.46 · high	5.50 · high	27.20 · good	fair
Sat 14:00	0.44 · high	5.50 · high	27.10 · good	fair
Sat 15:00	0.44 · high	5.80 · high	27.00 · good	fair
Sat 16:00	0.46 · high	7.90 · high	26.90 · good	fair
Sat 17:00	0.46 · high	7.30 · high	26.80 · good	fair
Sat 18:00	0.48 · high	7.60 · high	26.70 · good	fair
Sat 19:00	0.50 · high	7.30 · high	26.70 · good	poor
Sat 20:00	0.54 · high	6.40 · high	26.60 · good	poor
Sat 21:00	0.56 · high	4.30 · good	26.60 · good	poor
Sat 22:00	0.58 · high	5.10 · good	26.50 · good	poor
Sat 23:00	0.62 · high	2.30 · good	26.50 · good	poor
Sun 00:00	0.64 · high	5.40 · good	26.50 · good	poor
Sun 01:00	0.64 · high	4.50 · good	26.40 · good	poor
Sun 02:00	0.64 · high	4.70 · good	26.40 · good	poor
Sun 03:00	0.64 · high	4.80 · good	26.30 · good	poor
Sun 04:00	0.62 · high	5.20 · good	26.30 · good	fair
Sun 05:00	0.60 · high	4.60 · good	26.30 · good	fair
Sun 06:00	0.58 · high	5.10 · good	26.40 · good	fair
Sun 07:00	0.56 · high	7.80 · high	26.50 · good	poor
Sun 08:00	0.56 · high	7.10 · high	26.70 · good	fair
Sun 09:00	0.54 · high	6.10 · high	26.90 · good	fair
Sun 10:00	0.54 · high	6.90 · high	27.10 · good	fair
Sun 11:00	0.54 · high	6.40 · high	27.30 · good	fair
Sun 12:00	0.54 · high	12.30 · high	27.40 · good	poor
Sun 13:00	0.54 · high	10.20 · high	27.40 · good	poor
Sun 14:00	0.56 · high	8.80 · high	27.40 · good	poor
Sun 15:00	0.56 · high	7.40 · high	27.40 · good	fair
Sun 16:00	0.56 · high	7.80 · high	27.30 · good	fair
Sun 17:00	0.56 · high	8.60 · high	27.20 · good	fair