Can you snorkel in Santorini today?

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

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

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 Santorini 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.

Santorini Snorkel Report Today

Greece · Updated Wed 06:20 (EEST) · Source: Snapshot · Showing fallback/stale data

The skinny

Marginal Report Fri 16:20

Santorini looks marginal today. The least-bad daylight window is around Sat 07:00, but waves is limiting the forecast.

Score: 4.9/10

Best time: Sat 07:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Fri 20:00 (Fair). Peak afternoon wind is about 8.4 m/s.

Email me when it is good

Sunrise

06:13

Sunset

20:35

Water

24.4°C

Max air

30.0°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

Friday

⚠️ fair conditions

Main blocker: Waves

Saturday

⚠️ fair conditions

Main blocker: Waves

Best available hours

Sat 04:00 — Fair (0.49) · still limited by waves, tide/current
Sat 05:00 — Fair (0.48) · still limited by waves, tide/current
Fri 17:00 — Fair (0.44) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

Waves (16 hours)
Tide/current (11 hours)
Darkness (10 hours)

Jellyfish drift risk

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

Low · 29/100

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

Naxos

80 km away

❌ Poor

Paros

82 km away

❌ Poor

Milos

101 km away

❌ Poor

Crete

141 km away

✅ Good

Advanced forecast data

Viewing historical data

Wed 13:00 – Sat 13:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.51 around Wed 20:00; 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.

7/24 sampled hours stay at or below 0.36m (range 0.3m to 0.5m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 7.6 to 18.7m/s).

Tides range from -0.49m to -0.41m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview

Wed 13:00 fair ⚠️ Fair

Wed 14:00 fair ⚠️ Fair

Wed 15:00 fair ⚠️ Fair

Wed 16:00 fair ⚠️ Fair

Wed 17:00 fair ⚠️ Fair

Wed 18:00 poor ❌ Limited

Wed 19:00 poor ❌ Limited

Wed 20:00 poor ❌ Limited

Wed 21:00 poor ❌ Limited

Wed 22:00 poor ❌ Limited

Wed 23:00 poor ❌ Limited

Thu 00:00 poor ❌ Limited

Thu 01:00 poor ❌ Limited

Thu 02:00 poor ❌ Limited

Thu 03:00 poor ❌ Limited

Thu 04:00 fair ⚠️ Fair

Thu 05:00 fair ⚠️ Fair

Thu 06:00 fair ⚠️ Fair

Thu 07:00 fair ⚠️ Fair

Thu 08:00 fair ⚠️ Fair

Thu 09:00 fair ⚠️ Fair

Thu 10:00 fair ⚠️ Fair

Thu 11:00 fair ⚠️ Fair

Thu 12:00 fair ⚠️ Fair

Thu 13:00 fair ⚠️ Fair

Thu 14:00 fair ⚠️ Fair

Thu 15:00 fair ⚠️ Fair

Thu 16:00 fair ⚠️ Fair

Thu 17:00 fair ⚠️ Fair

Thu 18:00 poor ❌ Limited

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 fair ⚠️ Fair

Fri 05:00 fair ⚠️ Fair

Fri 06:00 fair ⚠️ Fair

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 poor ❌ Limited

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 fair ⚠️ Fair

Sat 05:00 fair ⚠️ Fair

Sat 06:00 fair ⚠️ Fair

Sat 07:00 fair ⚠️ Fair

Sat 08:00 fair ⚠️ Fair

Sat 09:00 fair ⚠️ Fair

Sat 10:00 fair ⚠️ Fair

Sat 11:00 poor ❌ Limited

Sat 12:00 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
Wed 13:00	0.46 · high	18.70 · high	23.90 · good	fair
Wed 14:00	0.44 · high	12.90 · high	23.90 · good	fair
Wed 15:00	0.42 · high	11.70 · high	23.90 · good	fair
Wed 16:00	0.40 · high	11.50 · high	23.90 · good	fair
Wed 17:00	0.38 · high	11.50 · high	23.90 · good	fair
Wed 18:00	0.36 · good	10.80 · high	23.90 · good	poor
Wed 19:00	0.34 · good	10.80 · high	23.90 · good	poor
Wed 20:00	0.32 · good	12.60 · high	23.90 · good	poor
Wed 21:00	0.30 · good	12.60 · high	23.90 · good	poor
Wed 22:00	0.32 · good	12.60 · high	23.90 · good	poor
Wed 23:00	0.34 · good	14.00 · high	23.90 · good	poor
Thu 00:00	0.36 · good	13.70 · high	23.90 · good	poor
Thu 01:00	0.40 · high	13.80 · high	23.90 · good	poor
Thu 02:00	0.44 · high	12.60 · high	23.90 · good	poor
Thu 03:00	0.48 · high	10.20 · high	23.90 · good	poor
Thu 04:00	0.48 · high	8.20 · high	23.90 · good	fair
Thu 05:00	0.50 · high	7.60 · high	23.90 · good	fair
Thu 06:00	0.50 · high	8.40 · high	23.90 · good	fair
Thu 07:00	0.50 · high	9.00 · high	23.90 · good	fair
Thu 08:00	0.48 · high	9.50 · high	24.00 · good	fair
Thu 09:00	0.48 · high	10.70 · high	24.00 · good	fair
Thu 10:00	0.48 · high	11.40 · high	24.10 · good	fair
Thu 11:00	0.46 · high	13.00 · high	24.10 · good	fair
Thu 12:00	0.46 · high	12.90 · high	24.20 · good	fair
Thu 13:00	0.44 · high	12.00 · high	24.20 · good	fair
Thu 14:00	0.44 · high	11.40 · high	24.20 · good	fair
Thu 15:00	0.42 · high	10.50 · high	24.20 · good	fair
Thu 16:00	0.42 · high	10.60 · high	24.20 · good	fair
Thu 17:00	0.42 · high	9.80 · high	24.10 · good	fair
Thu 18:00	0.42 · high	9.50 · high	24.10 · good	poor
Thu 19:00	0.46 · high	9.10 · high	24.10 · good	poor
Thu 20:00	0.48 · high	9.50 · high	24.10 · good	poor
Thu 21:00	0.52 · high	9.90 · high	24.10 · good	poor
Thu 22:00	0.56 · high	10.90 · high	24.10 · good	poor
Thu 23:00	0.58 · high	10.70 · high	24.00 · good	poor
Fri 00:00	0.62 · high	10.30 · high	24.00 · good	poor
Fri 01:00	0.62 · high	9.30 · high	24.00 · good	poor
Fri 02:00	0.62 · high	8.90 · high	24.00 · good	poor
Fri 03:00	0.62 · high	8.40 · high	24.00 · good	poor
Fri 04:00	0.62 · high	8.40 · high	24.00 · good	fair
Fri 05:00	0.60 · high	8.40 · high	24.00 · good	fair
Fri 06:00	0.60 · high	7.80 · high	24.00 · good	fair
Fri 07:00	0.60 · high	7.70 · high	24.00 · good	fair
Fri 08:00	0.58 · high	8.30 · high	24.10 · good	fair
Fri 09:00	0.58 · high	8.10 · high	24.20 · good	fair
Fri 10:00	0.56 · high	8.90 · high	24.30 · good	fair
Fri 11:00	0.48 · high	16.90 · high	25.40 · good	fair
Fri 12:00	0.48 · high	16.60 · high	25.50 · good	fair
Fri 13:00	0.50 · high	17.20 · high	25.60 · good	fair
Fri 14:00	0.50 · high	16.80 · high	25.60 · good	fair
Fri 15:00	0.52 · high	13.80 · high	25.50 · good	fair
Fri 16:00	0.52 · high	11.10 · high	25.50 · good	fair
Fri 17:00	0.54 · high	10.10 · high	25.40 · good	fair
Fri 18:00	0.54 · high	10.90 · high	25.40 · good	poor
Fri 19:00	0.54 · high	11.50 · high	25.30 · good	poor
Fri 20:00	0.52 · high	11.30 · high	25.30 · good	poor
Fri 21:00	0.52 · high	10.50 · high	25.20 · good	poor
Fri 22:00	0.52 · high	9.70 · high	25.20 · good	poor
Fri 23:00	0.54 · high	9.80 · high	25.10 · good	poor
Sat 00:00	0.54 · high	9.50 · high	25.10 · good	poor
Sat 01:00	0.54 · high	8.10 · high	25.00 · good	poor
Sat 02:00	0.54 · high	7.40 · high	25.00 · good	poor
Sat 03:00	0.54 · high	7.10 · high	24.90 · good	poor
Sat 04:00	0.54 · high	6.60 · high	24.90 · good	fair
Sat 05:00	0.52 · high	6.50 · high	24.90 · good	fair
Sat 06:00	0.52 · high	7.60 · high	24.90 · good	fair
Sat 07:00	0.52 · high	9.80 · high	25.00 · good	fair
Sat 08:00	0.54 · high	14.80 · high	25.10 · good	fair
Sat 09:00	0.54 · high	18.50 · high	25.20 · good	fair
Sat 10:00	0.56 · high	19.80 · high	25.40 · good	fair
Sat 11:00	0.56 · high	21.30 · high	25.50 · good	poor
Sat 12:00	0.58 · high	22.10 · high	25.50 · good	poor