SnorkelForecast.com

Rarotonga Snorkel Report Today

Cook Islands · Updated Sat 05:03 (-10) · Source: Snapshot

The skinny

Marginal Report Sat 10:50

Rarotonga looks marginal today. The least-bad daylight window is around Mon 13:00, but waves is limiting the forecast.

Score: 4.2/10

Best time: Mon 13:00

Main risk: Waves

Best morning signal: Sat 11:00 (Poor).

Best afternoon signal: Sat 13:00 (Poor). Peak afternoon wind is about 8.6 m/s.

Email me when it is good

Sunrise

07:15

Sunset

18:15

Water

23.6°C

Max air

20.7°C

Sky

Cloudy

84% cloud

No safe 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

Saturday

❌ poor conditions

Main blocker: Waves

Sunday

⚠️ fair conditions

Main blocker: Waves

Monday

⚠️ fair conditions

Main blocker: Waves

Best available hours

  • Mon 23:00 — Fair (0.45) · still limited by waves, wind
  • Mon 22:00 — Fair (0.43) · still limited by waves, wind
  • Sun 20:00 — Fair (0.42) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (56 hours)
  • Wind (55 hours)
  • Darkness (41 hours)

Jellyfish drift risk

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

Low · 24/100

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: Sun 11:00

Sat 22:00, Sun 11:00, Sun 23:00, Mon 11:00, Tue 00:00

Nearby alternatives in Cook Islands

Aitutaki Lagoon

265 km away

❌ Poor

Advanced forecast data

Viewing live forecast

Sat 20:00 – Tue 20:00 (-10)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.42 around Sun 10:00; 2 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 2.94m to 3.44m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 5.96 to 9.19m/s).

Tides range from 0.23m to 0.94m; 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
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
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
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Sat 21:00 3.42 · high 9.19 · high 23.60 · good poor
Sat 22:00 3.42 · high 8.59 · high 23.60 · good poor
Sat 23:00 3.42 · high 8.43 · high 23.60 · good poor
Sun 00:00 3.42 · high 8.76 · high 23.60 · good poor
Sun 01:00 3.42 · high 7.70 · high 23.60 · good poor
Sun 02:00 3.44 · high 8.73 · high 23.60 · good poor
Sun 03:00 3.44 · high 7.72 · high 23.60 · good poor
Sun 04:00 3.42 · high 7.92 · high 23.60 · good poor
Sun 05:00 3.40 · high 7.51 · high 23.60 · good poor
Sun 06:00 3.38 · high 7.83 · high 23.60 · good poor
Sun 07:00 3.34 · high 7.79 · high 23.60 · good poor
Sun 08:00 3.32 · high 7.30 · high 23.60 · good poor
Sun 09:00 3.28 · high 7.70 · high 23.60 · good poor
Sun 10:00 3.24 · high 8.61 · high 23.60 · good poor
Sun 11:00 3.20 · high 7.40 · high 23.60 · good poor
Sun 12:00 3.16 · high 7.30 · high 23.60 · good poor
Sun 13:00 3.12 · high 7.27 · high 23.60 · good poor
Sun 14:00 3.10 · high 6.23 · high 23.60 · good poor
Sun 15:00 3.06 · high 6.74 · high 23.60 · good poor
Sun 16:00 3.04 · high 7.25 · high 23.50 · good poor
Sun 17:00 3.02 · high 7.45 · high 23.50 · good poor
Sun 18:00 3.00 · high 7.79 · high 23.50 · good poor
Sun 19:00 2.98 · high 7.85 · high 23.50 · good fair
Sun 20:00 2.94 · high 5.96 · high 23.50 · good fair
Sun 21:00 2.92 · high 6.62 · high 23.50 · good poor
Sun 22:00 2.92 · high 7.39 · high 23.50 · good poor
Sun 23:00 2.90 · high 6.83 · high 23.50 · good poor
Mon 00:00 2.90 · high 6.87 · high 23.50 · good poor
Mon 01:00 2.90 · high 7.14 · high 23.50 · good poor
Mon 02:00 2.92 · high 7.20 · high 23.50 · good poor
Mon 03:00 2.92 · high 7.55 · high 23.50 · good poor
Mon 04:00 2.94 · high 7.75 · high 23.50 · good poor
Mon 05:00 2.94 · high 7.61 · high 23.50 · good poor
Mon 06:00 2.96 · high 7.34 · high 23.50 · good poor
Mon 07:00 2.98 · high 7.56 · high 23.50 · good poor
Mon 08:00 2.98 · high 7.66 · high 23.50 · good poor
Mon 09:00 3.00 · high 7.24 · high 23.50 · good poor
Mon 10:00 3.02 · high 7.13 · high 23.50 · good poor
Mon 11:00 3.06 · high 7.46 · high 23.50 · good poor
Mon 12:00 3.08 · high 8.47 · high 23.50 · good poor
Mon 13:00 3.10 · high 8.59 · high 23.50 · good poor
Mon 14:00 3.14 · high 7.90 · high 23.50 · good poor
Mon 15:00 3.16 · high 7.63 · high 23.50 · good poor
Mon 16:00 3.16 · high 7.21 · high 23.50 · good poor
Mon 17:00 3.18 · high 7.10 · high 23.50 · good poor
Mon 18:00 3.18 · high 7.25 · high 23.50 · good poor
Mon 19:00 3.20 · high 7.73 · high 23.50 · good poor
Mon 20:00 3.22 · high 8.86 · high 23.50 · good poor
Mon 21:00 3.24 · high 8.01 · high 23.50 · good fair
Mon 22:00 3.22 · high 6.80 · high 23.50 · good fair
Mon 23:00 3.18 · high 6.61 · high 23.50 · good fair
Tue 00:00 3.16 · high 6.45 · high 23.50 · good poor
Tue 01:00 3.12 · high 5.90 · high 23.50 · good poor
Tue 02:00 3.10 · high 5.42 · high 23.50 · good poor
Tue 03:00 3.06 · high 4.83 · good 23.50 · good poor
Tue 04:00 3.04 · high 6.06 · high 23.50 · good poor