SnorkelForecast.com

Rarotonga Snorkel Report Today

Cook Islands · Updated Wed 01:05 (-10) · Source: Snapshot

The skinny

Marginal Report Tue 15:16

Rarotonga looks marginal today. The least-bad daylight window is around Wed 12:00, but waves is limiting the forecast.

Score: 4.2/10

Best time: Wed 12:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Email me when it is good

Sunrise

06:46

Sunset

18:30

Water

23.3°C

Max air

21.7°C

Sky

Clear

11% 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

Tuesday

❌ Poor conditions

Main blocker: Waves

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Thursday

❌ Poor conditions

Main blocker: Waves

Best available hours

  • Wed 22:00: Fair (0.42) · still limited by waves, wind
  • Wed 23:00: Fair (0.41) · still limited by waves, wind
  • Wed 21:00: Fair (0.41) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Wind (65 hours)
  • Tide/current (63 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.

Upcoming high tides

Next early morning high tide: Wed 10:00

Wed 10:00, Wed 23:00, Thu 11:00, Fri 12:00

Nearby alternatives in Cook Islands

Aitutaki Lagoon

265 km away

❌ Poor

Advanced forecast data

Viewing current forecast

Wed 01:00 – Sat 01:00 (-10)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.42 around Wed 12:00; 4 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 1.4m to 2.2m).

Wind is at or below 5.4m/s in 6/24 sampled hours (range 3.07 to 8.35m/s).

Tides range from 0.19m to 0.93m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
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Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
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
Wed 02:00 1.40 · high 3.07 · good 23.30 · good Poor
Wed 03:00 1.40 · high 4.15 · good 23.20 · good Poor
Wed 04:00 1.42 · high 4.59 · good 23.10 · good Poor
Wed 05:00 1.42 · high 4.95 · good 23.10 · good Poor
Wed 06:00 1.44 · high 5.29 · good 23.00 · good Poor
Wed 07:00 1.48 · high 5.33 · good 22.90 · good Poor
Wed 08:00 1.52 · high 6.16 · high 22.80 · good Poor
Wed 09:00 1.56 · high 6.44 · high 22.70 · good Poor
Wed 10:00 1.60 · high 7.00 · high 22.70 · good Poor
Wed 11:00 1.66 · high 7.40 · high 22.60 · good Poor
Wed 12:00 1.70 · high 7.40 · high 22.50 · good Poor
Wed 13:00 1.74 · high 7.44 · high 22.50 · good Poor
Wed 14:00 1.80 · high 7.47 · high 22.40 · good Poor
Wed 15:00 1.84 · high 7.79 · high 22.40 · good Poor
Wed 16:00 1.88 · high 7.97 · high 22.40 · good Poor
Wed 17:00 1.90 · high 7.76 · high 22.40 · good Fair
Wed 18:00 1.94 · high 7.78 · high 22.40 · good Poor
Wed 19:00 1.98 · high 8.17 · high 22.40 · good Poor
Wed 20:00 2.00 · high 8.35 · high 22.40 · good Poor
Wed 21:00 2.04 · high 7.96 · high 22.40 · good Fair
Wed 22:00 2.08 · high 7.90 · high 22.40 · good Fair
Wed 23:00 2.10 · high 7.82 · high 22.50 · good Fair
Thu 00:00 2.14 · high 7.92 · high 22.50 · good Poor
Thu 01:00 2.20 · high 8.10 · high 22.50 · good Poor
Thu 02:00 2.26 · high 8.53 · high 22.50 · good Poor
Thu 03:00 2.32 · high 8.67 · high 22.50 · good Poor
Thu 04:00 2.40 · high 8.73 · high 22.50 · good Poor
Thu 05:00 2.46 · high 8.95 · high 22.50 · good Poor
Thu 06:00 2.54 · high 9.19 · high 22.50 · good Poor
Thu 07:00 2.62 · high 9.30 · high 22.50 · good Poor
Thu 08:00 2.68 · high 10.32 · high 22.50 · good Poor
Thu 09:00 2.76 · high 10.05 · high 22.50 · good Poor
Thu 10:00 2.80 · high 9.83 · high 22.50 · good Poor
Thu 11:00 2.84 · high 9.84 · high 22.50 · good Poor
Thu 12:00 2.88 · high 10.02 · high 22.50 · good Poor
Thu 13:00 2.94 · high 9.94 · high 22.50 · good Poor
Thu 14:00 2.98 · high 10.01 · high 22.40 · good Poor
Thu 15:00 3.04 · high 10.16 · high 22.40 · good Poor
Thu 16:00 3.08 · high 10.64 · high 22.40 · good Poor
Thu 17:00 3.14 · high 10.74 · high 22.40 · good Poor
Thu 18:00 3.18 · high 10.96 · high 22.40 · good Poor
Thu 19:00 3.22 · high 10.92 · high 22.40 · good Poor
Thu 20:00 3.26 · high 10.18 · high 22.40 · good Poor
Thu 21:00 3.30 · high 9.85 · high 22.40 · good Poor
Thu 22:00 3.32 · high 9.69 · high 22.40 · good Poor
Thu 23:00 3.32 · high 9.71 · high 22.40 · good Poor
Fri 00:00 3.34 · high 10.06 · high 22.40 · good Poor
Fri 01:00 3.34 · high 9.63 · high 22.40 · good Poor
Fri 02:00 3.36 · high 9.92 · high 22.40 · good Poor
Fri 03:00 3.36 · high 9.90 · high 22.30 · good Poor
Fri 04:00 3.38 · high 10.43 · high 22.30 · good Poor
Fri 05:00 3.40 · high 10.26 · high 22.30 · good Poor
Fri 06:00 3.42 · high 10.64 · high 22.30 · good Poor
Fri 07:00 3.42 · high 10.67 · high 22.30 · good Poor
Fri 08:00 3.40 · high 10.02 · high 22.30 · good Poor
Fri 09:00 3.40 · high 9.82 · high 22.30 · good Poor
Fri 10:00 3.38 · high 9.74 · high 22.40 · good Poor
Fri 11:00 3.38 · high 9.14 · high 22.40 · good Poor
Fri 12:00 3.36 · high 8.59 · high 22.40 · good Poor
Fri 13:00 3.34 · high 8.56 · high 22.40 · good Poor
Fri 14:00 3.30 · high 8.40 · high 22.40 · good Poor
Fri 15:00 3.28 · high 8.24 · high 22.40 · good Poor
Fri 16:00 3.24 · high 8.28 · high 22.40 · good Poor
Fri 17:00 3.20 · high 8.14 · high 22.40 · good Poor
Fri 18:00 3.16 · high 7.65 · high 22.40 · good Poor
Fri 19:00 3.12 · high 7.68 · high 22.40 · good Poor
Fri 20:00 3.10 · high 7.64 · high 22.50 · good Poor
Fri 21:00 3.06 · high 8.13 · high 22.50 · good Poor
Fri 22:00 3.02 · high 7.98 · high 22.50 · good Poor
Fri 23:00 2.96 · high 7.79 · high 22.50 · good Fair
Sat 00:00 2.92 · high 7.49 · high 22.50 · good Poor