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 01:13 (EEST) · Source: Snapshot

The skinny

Marginal Data updated Thu 01:13 (EEST)

Santorini looks marginal today. The least-bad daylight window is around Thu 15:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Thu 02:00 (EEST)

Later today

Poor · 3.2/10

Thu 15:00 (EEST)

Next three days

Fair · 4.9/10

Sat 09:00 (EEST)

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

Score: 3.2/10

Best time: Thu 15:00

Main risk: Waves

Best morning signal: Thu 08:00 (Poor).

Best afternoon signal: Thu 15:00 (Poor). Peak afternoon wind is about 9.6 m/s.

Email me when it is good Tours & water activities

Sunrise

07:25

Sunset

18:42

Water

22.5°C

Max air

19.3°C

Sky

Cloudy

80% cloud

No good model 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

Thursday

❌ Poor conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Saturday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

Sat 09:00: Fair (0.49) · still limited by waves, tide/current
Sat 08:00: Fair (0.49) · still limited by waves, tide/current
Fri 14:00: Fair (0.45) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

Waves (68 hours)
Wind (51 hours)
Tide/current (44 hours)

Jellyfish drift risk

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

Low · 26/100

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.

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Nearby alternatives in Greece

Naxos

80 km away

❌ Poor

Paros

82 km away

❌ Poor

Milos

101 km away

✅ Good

Crete

141 km away

✅ Good

Advanced forecast data

Viewing current forecast

Thu 02:00 – Sun 02:00 (EEST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.32 around Thu 15:00; 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 1.34m to 2.24m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.6 to 9.56m/s).

Tides range from -0.54m to -0.44m; 0 of 24 hours are in or near peak slack windows.

72-hour forecast overview

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 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 Fair ⚠️ Fair

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 Fair ⚠️ Fair

Sat 09:00 Fair ⚠️ Fair

Sat 10:00 Fair ⚠️ Fair

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 Poor ❌ Limited

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

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 03:00	2.04 · high	8.93 · high	22.50 · good	Poor
Thu 04:00	2.04 · high	8.75 · high	22.50 · good	Poor
Thu 05:00	2.06 · high	8.65 · high	22.50 · good	Poor
Thu 06:00	2.06 · high	8.73 · high	22.40 · good	Poor
Thu 07:00	2.12 · high	8.40 · high	22.40 · good	Poor
Thu 08:00	2.16 · high	8.01 · high	22.40 · good	Poor
Thu 09:00	2.22 · high	8.22 · high	22.30 · good	Poor
Thu 10:00	2.22 · high	8.71 · high	22.30 · good	Poor
Thu 11:00	2.24 · high	8.85 · high	22.30 · good	Poor
Thu 12:00	2.24 · high	9.39 · high	22.30 · good	Poor
Thu 13:00	2.20 · high	9.24 · high	22.20 · good	Poor
Thu 14:00	2.18 · high	9.14 · high	22.20 · good	Poor
Thu 15:00	2.14 · high	9.29 · high	22.20 · good	Poor
Thu 16:00	2.08 · high	9.56 · high	22.20 · good	Poor
Thu 17:00	2.04 · high	9.34 · high	22.20 · good	Poor
Thu 18:00	1.98 · high	9.12 · high	22.30 · good	Poor
Thu 19:00	1.90 · high	7.71 · high	22.30 · good	Poor
Thu 20:00	1.84 · high	7.40 · high	22.30 · good	Poor
Thu 21:00	1.76 · high	6.60 · high	22.30 · good	Poor
Thu 22:00	1.66 · high	6.71 · high	22.30 · good	Poor
Thu 23:00	1.56 · high	7.13 · high	22.30 · good	Poor
Fri 00:00	1.46 · high	7.21 · high	22.20 · good	Poor
Fri 01:00	1.40 · high	7.58 · high	22.20 · good	Poor
Fri 02:00	1.34 · high	7.28 · high	22.20 · good	Poor
Fri 03:00	1.28 · high	7.04 · high	22.20 · good	Poor
Fri 04:00	1.24 · high	6.95 · high	22.20 · good	Poor
Fri 05:00	1.20 · high	6.82 · high	22.10 · good	Poor
Fri 06:00	1.16 · high	6.78 · high	22.10 · good	Poor
Fri 07:00	1.12 · high	6.46 · high	22.10 · good	Poor
Fri 08:00	1.10 · high	6.41 · high	22.10 · good	Fair
Fri 09:00	1.06 · high	6.82 · high	22.10 · good	Fair
Fri 10:00	1.04 · high	7.21 · high	22.10 · good	Fair
Fri 11:00	1.00 · high	7.09 · high	22.10 · good	Fair
Fri 12:00	0.98 · high	7.00 · high	22.10 · good	Fair
Fri 13:00	0.94 · high	6.50 · high	22.10 · good	Fair
Fri 14:00	0.92 · high	6.26 · high	22.20 · good	Fair
Fri 15:00	0.88 · high	5.83 · high	22.20 · good	Fair
Fri 16:00	0.84 · high	5.52 · high	22.20 · good	Fair
Fri 17:00	0.82 · high	5.53 · high	22.20 · good	Fair
Fri 18:00	0.78 · high	5.04 · good	22.10 · good	Fair
Fri 19:00	0.74 · high	4.02 · good	22.10 · good	Poor
Fri 20:00	0.72 · high	2.92 · good	22.10 · good	Poor
Fri 21:00	0.68 · high	3.31 · good	22.10 · good	Poor
Fri 22:00	0.62 · high	3.10 · good	22.10 · good	Poor
Fri 23:00	0.58 · high	3.22 · good	22.10 · good	Poor
Sat 00:00	0.52 · high	2.96 · good	22.10 · good	Poor
Sat 01:00	0.48 · high	3.13 · good	22.10 · good	Poor
Sat 02:00	0.46 · high	3.42 · good	22.10 · good	Poor
Sat 03:00	0.42 · high	3.51 · good	22.10 · good	Poor
Sat 04:00	0.38 · high	3.42 · good	22.10 · good	Poor
Sat 05:00	0.36 · good	2.82 · good	22.10 · good	Poor
Sat 06:00	0.32 · good	2.85 · good	22.10 · good	Poor
Sat 07:00	0.40 · high	5.31 · good	22.00 · good	Poor
Sat 08:00	0.46 · high	4.91 · good	22.00 · good	Fair
Sat 09:00	0.54 · high	3.93 · good	22.00 · good	Fair
Sat 10:00	0.68 · high	4.37 · good	22.00 · good	Fair
Sat 11:00	0.80 · high	6.13 · high	22.00 · good	Fair
Sat 12:00	0.94 · high	6.28 · high	22.00 · good	Fair
Sat 13:00	1.06 · high	6.62 · high	22.00 · good	Fair
Sat 14:00	1.16 · high	6.50 · high	22.00 · good	Fair
Sat 15:00	1.28 · high	6.56 · high	22.00 · good	Fair
Sat 16:00	1.32 · high	6.93 · high	22.00 · good	Fair
Sat 17:00	1.34 · high	6.74 · high	22.00 · good	Poor
Sat 18:00	1.38 · high	6.17 · high	22.00 · good	Fair
Sat 19:00	1.36 · high	6.45 · high	22.00 · good	Poor
Sat 20:00	1.36 · high	5.98 · high	22.00 · good	Poor
Sat 21:00	1.34 · high	5.77 · high	22.00 · good	Poor
Sat 22:00	1.30 · high	5.41 · high	22.00 · good	Poor
Sat 23:00	1.28 · high	4.75 · good	21.90 · good	Poor
Sun 00:00	1.24 · high	4.18 · good	21.90 · good	Poor