SnorkelForecast.com

Manuel Antonio Snorkel Report Today

Costa Rica · Updated Fri 03:25 (CST) · Source: Snapshot

The skinny

Go in the best window Report Fri 01:03

Manuel Antonio has a usable snorkeling window around Sun 06:00. The main thing to watch is waves.

Score: 4.7/10

Best time: Sun 06:00

Main risk: Waves

Best morning signal: Fri 06:00 (Fair).

Best afternoon signal: Fri 16:00 (Fair). Peak afternoon wind is about 2.7 m/s.

Email me when it is good

Sunrise

05:25

Sunset

18:00

Water

29.5°C

Max air

30.3°C

Sky

Cloudy

100% cloud

Good window is available today

Next safe window: Sun 12:00 (1% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Friday

⚠️ fair conditions

Main blocker: Waves

Saturday

⚠️ fair conditions

Main blocker: Waves

Sunday

✅ good conditions

Main blocker: Waves

Best available hours

Next safe window starts at Sun 12:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (67 hours)
  • Tide/current (55 hours)
  • Darkness (31 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Fri 12:00.

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.

Upcoming high tides

Next early morning high tide: Sun 06:00

Fri 16:00, Sat 05:00, Sat 17:00, Sun 06:00, Sun 18:00

Nearby alternatives in Costa Rica

Caño Island

81 km away

❌ Poor

Advanced forecast data

Viewing historical data

Thu 07:00 – Sun 07:00 (CST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.0 around Thu 01:00; 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 1.32m to 1.44m).

Wind is at or below 5.4m/s in 22/24 sampled hours (range 1.4 to 7.7m/s).

Tides range from -0.26m to 1.35m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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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 07:00 1.44 · high 3.70 · good 30.20 · good poor
Thu 08:00 1.42 · high 3.90 · good 30.10 · good poor
Thu 09:00 1.42 · high 3.70 · good 30.10 · good poor
Thu 10:00 1.42 · high 4.10 · good 30.00 · good poor
Thu 11:00 1.40 · high 2.30 · good 30.00 · good poor
Thu 12:00 1.40 · high 1.90 · good 30.00 · good poor
Thu 13:00 1.40 · high 1.90 · good 30.10 · good poor
Thu 14:00 1.38 · high 3.70 · good 30.20 · good poor
Thu 15:00 1.38 · high 1.40 · good 30.30 · good poor
Thu 16:00 1.38 · high 2.20 · good 30.40 · good poor
Thu 17:00 1.38 · high 4.90 · good 30.50 · out of range poor
Thu 18:00 1.38 · high 6.20 · high 30.60 · out of range poor
Thu 19:00 1.38 · high 7.70 · high 30.60 · out of range poor
Thu 20:00 1.36 · high 4.90 · good 30.60 · out of range poor
Thu 21:00 1.36 · high 2.00 · good 30.60 · out of range poor
Thu 22:00 1.36 · high 3.60 · good 30.60 · out of range poor
Thu 23:00 1.34 · high 3.90 · good 30.60 · out of range poor
Fri 00:00 1.34 · high 3.60 · good 30.50 · out of range poor
Fri 01:00 1.34 · high 4.70 · good 30.50 · out of range poor
Fri 02:00 1.32 · high 4.70 · good 30.40 · good poor
Fri 03:00 1.32 · high 4.30 · good 30.40 · good poor
Fri 04:00 1.32 · high 2.10 · good 30.30 · good poor
Fri 05:00 1.32 · high 2.40 · good 30.30 · good poor
Fri 06:00 1.32 · high 1.90 · good 30.20 · good poor
Fri 07:00 1.32 · high 1.30 · good 30.20 · good poor
Fri 08:00 1.34 · high 1.00 · good 30.10 · good poor
Fri 09:00 1.34 · high 4.60 · good 30.10 · good poor
Fri 10:00 1.34 · high 2.30 · good 30.10 · good poor
Fri 11:00 1.36 · high 1.50 · good 30.10 · good poor
Fri 12:00 1.36 · high 3.30 · good 30.10 · good poor
Fri 13:00 1.36 · high 5.10 · good 30.10 · good poor
Fri 14:00 1.38 · high 6.90 · high 30.20 · good poor
Fri 15:00 1.38 · high 3.50 · good 30.40 · good poor
Fri 16:00 1.38 · high 1.10 · good 30.50 · out of range poor
Fri 17:00 1.38 · high 5.30 · good 30.60 · out of range poor
Fri 18:00 1.38 · high 7.90 · high 30.70 · out of range poor
Fri 19:00 1.38 · high 7.50 · high 30.70 · out of range poor
Fri 20:00 1.40 · high 8.10 · high 30.70 · out of range poor
Fri 21:00 1.40 · high 5.40 · good 30.70 · out of range poor
Fri 22:00 1.40 · high 2.30 · good 30.60 · out of range poor
Fri 23:00 1.40 · high 4.40 · good 30.60 · out of range poor
Sat 00:00 1.40 · high 5.00 · good 30.60 · out of range poor
Sat 01:00 1.40 · high 4.10 · good 30.50 · out of range poor
Sat 02:00 1.40 · high 2.80 · good 30.50 · out of range poor
Sat 03:00 1.40 · high 1.90 · good 30.50 · out of range poor
Sat 04:00 1.40 · high 1.10 · good 30.40 · good poor
Sat 05:00 1.42 · high 4.10 · good 30.40 · good poor
Sat 06:00 1.42 · high 3.10 · good 30.40 · good poor
Sat 07:00 1.42 · high 2.80 · good 30.30 · good poor
Sat 08:00 1.42 · high 0.90 · good 30.30 · good poor
Sat 09:00 1.42 · high 3.20 · good 30.30 · good poor
Sat 10:00 1.42 · high 1.40 · good 30.30 · good poor
Sat 11:00 1.44 · high 4.40 · good 30.30 · good poor
Sat 12:00 1.44 · high 1.90 · good 30.30 · good poor
Sat 13:00 1.44 · high 3.30 · good 30.30 · good poor
Sat 14:00 1.44 · high 6.10 · high 30.40 · good poor
Sat 15:00 1.44 · high 7.80 · high 30.60 · out of range poor
Sat 16:00 1.44 · high 8.00 · high 30.70 · out of range poor
Sat 17:00 1.44 · high 5.70 · high 30.80 · out of range poor
Sat 18:00 1.44 · high 5.10 · good 30.90 · out of range poor
Sat 19:00 1.44 · high 4.90 · good 30.90 · out of range poor
Sat 20:00 1.44 · high 4.00 · good 30.90 · out of range poor
Sat 21:00 1.44 · high 1.80 · good 30.90 · out of range poor
Sat 22:00 1.44 · high 0.80 · good 30.90 · out of range poor
Sat 23:00 1.44 · high 1.90 · good 30.90 · out of range poor
Sun 00:00 1.44 · high 3.80 · good 30.80 · out of range poor
Sun 01:00 1.44 · high 4.70 · good 30.80 · out of range poor
Sun 02:00 1.42 · high 3.50 · good 30.70 · out of range poor
Sun 03:00 1.42 · high 3.70 · good 30.70 · out of range poor
Sun 04:00 1.42 · high 4.60 · good 30.60 · out of range poor
Sun 05:00 1.42 · high 3.80 · good 30.50 · out of range poor
Sun 06:00 1.42 · high 3.70 · good 30.50 · out of range poor