SnorkelForecast.com

Rarotonga Snorkel Report Today

Cook Islands · Updated Wed 02:14 (-10) · Source: Snapshot

The skinny

Marginal Report Tue 16:24

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

23.2°C

Max air

21.6°C

Sky

Partly cloudy

40% 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 (66 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, Sat 00:00

Nearby alternatives in Cook Islands

Aitutaki Lagoon

265 km away

❌ Poor

Advanced forecast data

Viewing historical data

Tue 02:00 – Fri 02:00 (-10)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.48 around Tue 07:00; 7 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 1.66m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.12 to 4.09m/s).

Tides range from 0.2m to 0.92m; 2 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
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Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
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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 02:00 1.66 · high 3.82 · good 22.90 · good Poor
Tue 03:00 1.64 · high 3.89 · good 22.90 · good Poor
Tue 04:00 1.62 · high 3.91 · good 22.90 · good Poor
Tue 05:00 1.58 · high 4.09 · good 22.80 · good Poor
Tue 06:00 1.56 · high 2.23 · good 22.80 · good Poor
Tue 07:00 1.54 · high 2.38 · good 22.80 · good Poor
Tue 08:00 1.54 · high 2.49 · good 22.80 · good Poor
Tue 09:00 1.52 · high 3.06 · good 22.70 · good Poor
Tue 10:00 1.50 · high 3.44 · good 22.70 · good Poor
Tue 11:00 1.46 · high 3.57 · good 22.60 · good Poor
Tue 12:00 1.44 · high 3.11 · good 22.60 · good Poor
Tue 13:00 1.44 · high 2.57 · good 22.50 · good Poor
Tue 14:00 1.42 · high 2.33 · good 22.50 · good Poor
Tue 15:00 1.42 · high 2.01 · good 22.50 · good Poor
Tue 16:00 1.42 · high 2.10 · good 22.50 · good Poor
Tue 17:00 1.40 · high 2.46 · good 22.50 · good Fair
Tue 18:00 1.40 · high 1.69 · good 22.50 · good Fair
Tue 19:00 1.40 · high 1.97 · good 22.60 · good Fair
Tue 20:00 1.34 · high 2.47 · good 22.80 · good Fair
Tue 21:00 1.34 · high 2.07 · good 23.00 · good Fair
Tue 22:00 1.34 · high 1.45 · good 23.10 · good Fair
Tue 23:00 1.36 · high 1.35 · good 23.30 · good Fair
Wed 00:00 1.36 · high 1.12 · good 23.40 · good Poor
Wed 01:00 1.38 · high 1.70 · good 23.40 · good Poor
Wed 02:00 1.40 · high 2.04 · good 23.40 · good Poor
Wed 03:00 1.42 · high 2.67 · good 23.40 · good Poor
Wed 04:00 1.44 · high 3.63 · good 23.30 · good Poor
Wed 05:00 1.44 · high 3.93 · good 23.20 · good Poor
Wed 06:00 1.46 · high 4.65 · good 23.20 · good Poor
Wed 07:00 1.52 · high 5.05 · good 23.10 · good Poor
Wed 08:00 1.58 · high 5.04 · good 23.00 · good Poor
Wed 09:00 1.64 · high 4.75 · good 22.90 · good Poor
Wed 10:00 1.70 · high 5.32 · good 22.90 · good Poor
Wed 11:00 1.70 · high 6.23 · high 22.50 · good Poor
Wed 12:00 1.76 · high 7.13 · high 22.50 · good Poor
Wed 13:00 1.80 · high 6.78 · high 22.40 · good Poor
Wed 14:00 1.86 · high 6.68 · high 22.40 · good Poor
Wed 15:00 1.90 · high 6.19 · high 22.40 · good Poor
Wed 16:00 1.94 · high 5.74 · high 22.30 · good Poor
Wed 17:00 1.98 · high 5.80 · high 22.30 · good Poor
Wed 18:00 2.02 · high 5.63 · high 22.30 · good Poor
Wed 19:00 2.06 · high 9.25 · high 22.30 · good Poor
Wed 20:00 2.10 · high 8.93 · high 22.30 · good Poor
Wed 21:00 2.14 · high 8.98 · high 22.40 · good Poor
Wed 22:00 2.18 · high 8.78 · high 22.40 · good Fair
Wed 23:00 2.22 · high 8.95 · high 22.40 · good Fair
Thu 00:00 2.26 · high 9.05 · high 22.40 · good Poor
Thu 01:00 2.32 · high 9.16 · high 22.40 · good Poor
Thu 02:00 2.38 · high 9.59 · high 22.40 · good Poor
Thu 03:00 2.44 · high 9.62 · high 22.40 · good Poor
Thu 04:00 2.52 · high 9.83 · high 22.40 · good Poor
Thu 05:00 2.58 · high 10.08 · high 22.40 · good Poor
Thu 06:00 2.66 · high 10.29 · high 22.40 · good Poor
Thu 07:00 2.74 · high 10.47 · high 22.40 · good Poor
Thu 08:00 2.84 · high 11.01 · high 22.40 · good Poor
Thu 09:00 2.92 · high 10.90 · high 22.40 · good Poor
Thu 10:00 2.98 · high 10.39 · high 22.40 · good Poor
Thu 11:00 2.98 · high 10.20 · high 22.40 · good Poor
Thu 12:00 3.04 · high 10.45 · high 22.40 · good Poor
Thu 13:00 3.10 · high 10.19 · high 22.40 · good Poor
Thu 14:00 3.14 · high 10.66 · high 22.40 · good Poor
Thu 15:00 3.20 · high 10.08 · high 22.40 · good Poor
Thu 16:00 3.24 · high 10.28 · high 22.30 · good Poor
Thu 17:00 3.30 · high 10.85 · high 22.30 · good Poor
Thu 18:00 3.34 · high 10.75 · high 22.30 · good Poor
Thu 19:00 3.38 · high 10.45 · high 22.30 · good Poor
Thu 20:00 3.36 · high 11.23 · high 22.30 · good Poor
Thu 21:00 3.42 · high 11.46 · high 22.30 · good Poor
Thu 22:00 3.46 · high 11.21 · high 22.30 · good Poor
Thu 23:00 3.48 · high 10.60 · high 22.30 · good Poor
Fri 00:00 3.52 · high 10.39 · high 22.30 · good Poor
Fri 01:00 3.52 · high 10.13 · high 22.30 · good Poor