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 17:19 (EEST) · Source: Snapshot

The skinny

Poor Data updated Thu 17:19 (EEST)

Santorini has no good model window later today. Check the three-day outlook and official beach advisories.

Right now (forecast)

Poor · 2.3/10

Thu 18:00 (EEST)

Later today

No fresh data for this period.

Next three days

Excellent · 7.7/10

Sun 12:00 (EEST)

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

Score: 0.0/10

Best time: -

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good Tours & water activities

Sunrise

07:25

Sunset

18:42

Water

21.9°C

Max air

17.5°C

Sky

Partly cloudy

32% cloud

Good model window in the next 72 hours

Next good model window: Sun 08:00–16:00 (13% 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 16:00.

Why this verdict

Main blockers across the next 72 hours:

Waves (62 hours)
Darkness (39 hours)
Wind (34 hours)

Jellyfish drift risk

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

Low · 20/100

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.

We may earn a commission at no extra cost to you.

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Sunset Sailing Catamaran Cruise in Santorini with BBQ and Drinks

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Santorini Sunset Luxury Sailing Catamaran Cruise with BBQ, drinks, transfer

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Santorini: Small Group Catamaran Cruise with BBQ Fish & Drinks

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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

Tue 18:00 – Fri 18:00 (EEST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.35 around Wed 17:00; 1 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 1.1m to 1.6m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.18 to 7.5m/s).

Tides range from -0.56m to -0.48m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview

Tue 18:00 Poor ❌ Limited

Tue 19:00 Poor ❌ Limited

Tue 20:00 Poor ❌ Limited

Tue 21:00 Poor ❌ Limited

Tue 22:00 Poor ❌ Limited

Tue 23:00 Poor ❌ Limited

Wed 00:00 Poor ❌ Limited

Wed 01:00 Poor ❌ Limited

Wed 02:00 Poor ❌ Limited

Wed 03:00 Poor ❌ Limited

Wed 04:00 Poor ❌ Limited

Wed 05:00 Poor ❌ Limited

Wed 06:00 Poor ❌ Limited

Wed 07:00 Poor ❌ Limited

Wed 08:00 Poor ❌ Limited

Wed 09:00 Poor ❌ Limited

Wed 10:00 Poor ❌ Limited

Wed 11:00 Poor ❌ Limited

Wed 12:00 Poor ❌ Limited

Wed 13:00 Poor ❌ Limited

Wed 14:00 Poor ❌ Limited

Wed 15:00 Poor ❌ Limited

Wed 16:00 Poor ❌ Limited

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 Poor ❌ Limited

Thu 05:00 Poor ❌ Limited

Thu 06:00 Poor ❌ Limited

Thu 07:00 Poor ❌ Limited

Thu 08:00 Poor ❌ Limited

Thu 09:00 Poor ❌ Limited

Thu 10:00 Poor ❌ Limited

Thu 11:00 Poor ❌ Limited

Thu 12:00 Poor ❌ Limited

Thu 13:00 Poor ❌ Limited

Thu 14:00 Poor ❌ Limited

Thu 15:00 Poor ❌ Limited

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

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
Tue 18:00	1.10 · high	7.38 · high	23.90 · good	Poor
Tue 19:00	1.16 · high	7.40 · high	23.90 · good	Poor
Tue 20:00	1.24 · high	7.23 · high	23.90 · good	Poor
Tue 21:00	1.30 · high	7.01 · high	23.90 · good	Poor
Tue 22:00	1.34 · high	6.77 · high	23.90 · good	Poor
Tue 23:00	1.36 · high	6.69 · high	23.80 · good	Poor
Wed 00:00	1.40 · high	6.65 · high	23.80 · good	Poor
Wed 01:00	1.42 · high	6.58 · high	23.80 · good	Poor
Wed 02:00	1.44 · high	6.74 · high	23.80 · good	Poor
Wed 03:00	1.46 · high	6.91 · high	23.80 · good	Poor
Wed 04:00	1.48 · high	6.87 · high	23.80 · good	Poor
Wed 05:00	1.48 · high	6.82 · high	23.70 · good	Poor
Wed 06:00	1.50 · high	7.11 · high	23.70 · good	Poor
Wed 07:00	1.54 · high	6.99 · high	23.70 · good	Poor
Wed 08:00	1.56 · high	7.20 · high	23.70 · good	Poor
Wed 09:00	1.60 · high	7.50 · high	23.70 · good	Poor
Wed 10:00	1.58 · high	7.34 · high	23.70 · good	Poor
Wed 11:00	1.58 · high	7.05 · high	23.70 · good	Poor
Wed 12:00	1.56 · high	6.89 · high	23.70 · good	Poor
Wed 13:00	1.52 · high	7.03 · high	23.70 · good	Poor
Wed 14:00	1.50 · high	7.20 · high	23.60 · good	Poor
Wed 15:00	1.46 · high	6.84 · high	23.60 · good	Poor
Wed 16:00	1.44 · high	6.53 · high	23.60 · good	Poor
Wed 17:00	1.42 · high	6.18 · high	23.60 · good	Fair
Wed 18:00	1.24 · high	6.73 · high	23.60 · good	Poor
Wed 19:00	1.18 · high	6.71 · high	23.60 · good	Poor
Wed 20:00	1.12 · high	6.53 · high	23.50 · good	Poor
Wed 21:00	1.06 · high	6.36 · high	23.50 · good	Poor
Wed 22:00	1.06 · high	6.24 · high	23.50 · good	Poor
Wed 23:00	1.06 · high	5.94 · high	23.50 · good	Poor
Thu 00:00	1.06 · high	6.18 · high	23.50 · good	Poor
Thu 01:00	1.16 · high	6.72 · high	23.50 · good	Poor
Thu 02:00	1.26 · high	7.22 · high	23.40 · good	Poor
Thu 03:00	1.36 · high	7.32 · high	23.40 · good	Poor
Thu 04:00	1.40 · high	7.41 · high	23.40 · good	Poor
Thu 05:00	1.46 · high	7.30 · high	23.40 · good	Poor
Thu 06:00	1.50 · high	6.60 · high	23.40 · good	Poor
Thu 07:00	1.50 · high	6.60 · high	23.40 · good	Poor
Thu 08:00	1.52 · high	6.70 · high	23.30 · good	Poor
Thu 09:00	1.52 · high	6.92 · high	23.30 · good	Poor
Thu 10:00	1.50 · high	6.93 · high	23.30 · good	Poor
Thu 11:00	1.48 · high	6.94 · high	23.30 · good	Poor
Thu 12:00	1.46 · high	8.41 · high	23.30 · good	Poor
Thu 13:00	1.46 · high	8.20 · high	23.30 · good	Poor
Thu 14:00	1.24 · high	8.11 · high	23.30 · good	Poor
Thu 15:00	1.24 · high	8.11 · high	23.30 · good	Poor
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