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

Snorkel in daylight, if possible in the morning before the wind picks up. Currents are often weaker near high slack tide. SnorkelForecast scores each daylight hour for Santorini.

What is the best tide for snorkeling?

High slack tide, within about an hour of the high-tide peak, often has weaker currents. Strong low tides and tidal flow near channels or headlands reduce the score.

MARINE REPORT / 72 HOURS

Santorini Snorkel Report Today

Greece · Updated Thu 13:45 (EEST) · Source: Snapshot

The skinny

Marginal Data updated Thu 13:45 (EEST)

Santorini looks marginal today. The least-bad daylight window is around Thu 18:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 2.2/10

Thu 16:00 (EEST)

Later today

Poor · 2.9/10

Thu 18:00 (EEST)

Next three days

Excellent · 7.5/10

Sun 12:00 (EEST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 2.9/10

Best time: Thu 18:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Thu 18:00 (Poor). Peak afternoon wind is about 9.2 m/s.

Email me when it is good Tours & water activities

Sunrise

07:25

Sunset

18:42

Water

22.2°C

Max air

18.5°C

Sky

Partly cloudy

32% cloud

Good model window in the next 72 hours

Next good model window: Sun 08:00–12:00 (7% of the next 72h meets the model threshold)

3-day planner Best available Show data

3-day planner

Thursday

❌ Poor conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Saturday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

The next good model window starts at Sun 08:00 and lasts until 12:00.

Why this verdict

Main blockers across the next 72 hours:

Waves (65 hours)
Darkness (39 hours)
Wind (36 hours)

Jellyfish drift risk

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

Low · 24/100

Low drift risk now.

water is warm enough for occasional jellyfish; 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.

Bookable snorkel tours near Santorini

Prices and availability from Viator. Check conditions before you book.

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Nearby alternatives in Greece

Naxos

80 km away

✅ Good

Paros

82 km away

✅ Good

Milos

101 km away

✅ Good

Crete

141 km away

✅ Good

Advanced forecast data

Viewing historical data

Thu 16:00 – Sun 16:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.29 around Thu 18:00; 0 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.

0/24 sampled hours stay at or below 0.36m (range 1.26m to 1.84m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.81 to 10.04m/s).

Tides range from -0.56m to -0.49m; 0 of 24 hours are in or near peak slack windows.

72-hour historical overview

Thu 16:00 Poor ❌ Limited

Thu 17:00 Poor ❌ Limited

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 Poor ❌ Limited

Fri 05:00 Poor ❌ Limited

Fri 06:00 Poor ❌ Limited

Fri 07:00 Poor ❌ Limited

Fri 08:00 Poor ❌ Limited

Fri 09:00 Poor ❌ Limited

Fri 10:00 Poor ❌ Limited

Fri 11:00 Poor ❌ Limited

Fri 12:00 Poor ❌ Limited

Fri 13:00 Poor ❌ Limited

Fri 14:00 Poor ❌ Limited

Fri 15:00 Poor ❌ Limited

Fri 16:00 Poor ❌ Limited

Fri 17:00 Poor ❌ Limited

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 Poor ❌ Limited

Sat 05:00 Poor ❌ Limited

Sat 06:00 Poor ❌ Limited

Sat 07:00 Poor ❌ Limited

Sat 08:00 Poor ❌ Limited

Sat 09:00 Poor ❌ Limited

Sat 10:00 Poor ❌ Limited

Sat 11:00 Poor ❌ Limited

Sat 12:00 Poor ❌ Limited

Sat 13:00 Poor ❌ Limited

Sat 14:00 Poor ❌ Limited

Sat 15:00 Poor ❌ Limited

Sat 16:00 Poor ❌ Limited

Sat 17:00 Poor ❌ Limited

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 Poor ❌ Limited

Sun 05:00 Poor ❌ Limited

Sun 06:00 Poor ❌ Limited

Sun 07:00 Poor ❌ Limited

Sun 08:00 Poor ❌ Limited

Sun 09:00 Poor ❌ Limited

Sun 10:00 Poor ❌ Limited

Sun 11:00 Poor ❌ Limited

Sun 12:00 Fair ⚠️ Fair

Sun 13:00 Fair ⚠️ Fair

Sun 14:00 Fair ⚠️ Fair

Sun 15:00 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 is better in daylight, so night hours score lower.

Detailed hourly data table

Time	Wave (m)	Wind (m/s)	Sea temp (°C)	Status
Thu 16:00	1.26 · high	8.10 · high	23.30 · good	Poor
Thu 17:00	1.28 · high	8.10 · high	23.20 · good	Poor
Thu 18:00	1.30 · high	8.30 · high	23.20 · good	Poor
Thu 19:00	1.28 · high	7.20 · high	23.20 · good	Poor
Thu 20:00	1.70 · high	6.81 · high	23.20 · good	Poor
Thu 21:00	1.72 · high	6.91 · high	23.20 · good	Poor
Thu 22:00	1.74 · high	7.13 · high	23.20 · good	Poor
Thu 23:00	1.74 · high	7.36 · high	23.10 · good	Poor
Fri 00:00	1.76 · high	7.48 · high	23.10 · good	Poor
Fri 01:00	1.76 · high	7.55 · high	23.10 · good	Poor
Fri 02:00	1.76 · high	7.44 · high	23.10 · good	Poor
Fri 03:00	1.76 · high	7.54 · high	23.10 · good	Poor
Fri 04:00	1.76 · high	7.53 · high	23.10 · good	Poor
Fri 05:00	1.78 · high	7.62 · high	23.00 · good	Poor
Fri 06:00	1.78 · high	9.71 · high	23.00 · good	Poor
Fri 07:00	1.80 · high	9.60 · high	23.00 · good	Poor
Fri 08:00	1.82 · high	9.50 · high	22.90 · good	Poor
Fri 09:00	1.84 · high	9.92 · high	22.90 · good	Poor
Fri 10:00	1.82 · high	9.93 · high	22.90 · good	Poor
Fri 11:00	1.80 · high	9.95 · high	22.90 · good	Poor
Fri 12:00	1.78 · high	10.04 · high	22.90 · good	Poor
Fri 13:00	1.76 · high	9.89 · high	22.90 · good	Poor
Fri 14:00	1.68 · high	9.74 · high	22.90 · good	Poor
Fri 15:00	1.66 · high	9.61 · high	22.90 · good	Poor
Fri 16:00	1.66 · high	9.40 · high	22.90 · good	Poor
Fri 17:00	1.68 · high	9.23 · high	22.80 · good	Poor
Fri 18:00	1.68 · high	8.61 · high	22.80 · good	Poor
Fri 19:00	1.72 · high	8.16 · high	22.80 · good	Poor
Fri 20:00	1.74 · high	8.17 · high	22.80 · good	Poor
Fri 21:00	1.62 · high	8.67 · high	22.80 · good	Poor
Fri 22:00	1.66 · high	8.34 · high	22.80 · good	Poor
Fri 23:00	1.68 · high	8.55 · high	22.70 · good	Poor
Sat 00:00	1.72 · high	8.69 · high	22.70 · good	Poor
Sat 01:00	1.70 · high	8.37 · high	22.70 · good	Poor
Sat 02:00	1.68 · high	8.35 · high	22.70 · good	Poor
Sat 03:00	1.66 · high	7.86 · high	22.70 · good	Poor
Sat 04:00	1.68 · high	7.67 · high	22.70 · good	Poor
Sat 05:00	1.68 · high	7.59 · high	22.60 · good	Poor
Sat 06:00	1.70 · high	7.83 · high	22.60 · good	Poor
Sat 07:00	1.74 · high	7.74 · high	22.60 · good	Poor
Sat 08:00	1.80 · high	7.74 · high	22.60 · good	Poor
Sat 09:00	1.84 · high	7.89 · high	22.60 · good	Poor
Sat 10:00	1.84 · high	7.91 · high	22.60 · good	Poor
Sat 11:00	1.82 · high	7.96 · high	22.60 · good	Poor
Sat 12:00	1.82 · high	7.31 · high	22.60 · good	Poor
Sat 13:00	1.78 · high	7.21 · high	22.60 · good	Poor
Sat 14:00	1.70 · high	7.01 · high	22.70 · good	Poor
Sat 15:00	1.68 · high	7.06 · high	22.70 · good	Poor
Sat 16:00	1.64 · high	6.79 · high	22.70 · good	Poor
Sat 17:00	1.62 · high	6.43 · high	22.70 · good	Poor
Sat 18:00	1.58 · high	5.90 · high	22.70 · good	Poor
Sat 19:00	1.56 · high	5.54 · high	22.70 · good	Poor
Sat 20:00	1.48 · high	6.48 · high	22.60 · good	Poor
Sat 21:00	1.48 · high	6.11 · high	22.60 · good	Poor
Sat 22:00	1.46 · high	5.12 · good	22.60 · good	Poor
Sat 23:00	1.46 · high	5.13 · good	22.60 · good	Poor
Sun 00:00	1.44 · high	4.57 · good	22.60 · good	Poor
Sun 01:00	1.40 · high	5.07 · good	22.60 · good	Poor
Sun 02:00	1.38 · high	5.20 · good	22.60 · good	Poor
Sun 03:00	1.34 · high	5.41 · high	22.60 · good	Poor
Sun 04:00	1.30 · high	5.28 · good	22.60 · good	Poor
Sun 05:00	1.26 · high	4.96 · good	22.50 · good	Poor
Sun 06:00	1.22 · high	6.03 · high	22.50 · good	Poor
Sun 07:00	1.20 · high	6.02 · high	22.50 · good	Poor
Sun 08:00	1.16 · high	6.11 · high	22.50 · good	Poor
Sun 09:00	1.14 · high	6.31 · high	22.50 · good	Poor
Sun 10:00	1.10 · high	6.12 · high	22.50 · good	Poor
Sun 11:00	1.06 · high	5.94 · high	22.50 · good	Poor
Sun 12:00	1.02 · high	6.42 · high	22.60 · good	Fair
Sun 13:00	0.98 · high	6.22 · high	22.70 · good	Fair
Sun 14:00	0.96 · high	6.11 · high	22.50 · good	Fair
Sun 15:00	0.92 · high	5.90 · high	22.50 · good	Poor