SnorkelForecast.com

Rarotonga Snorkel Report Today

Cook Islands · Updated Tue 04:15 (-10) · Source: Snapshot

The skinny

Marginal Report Tue 11:17

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

Score: 3.8/10

Best time: Wed 13:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Tue 13:00 (Poor). Peak afternoon wind is about 7.2 m/s.

Email me when it is good

Sunrise

07:14

Sunset

18:16

Water

23.5°C

Max air

21.4°C

Sky

Cloudy

100% 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

Tuesday

❌ poor conditions

Main blocker: Waves

Wednesday

⚠️ fair conditions

Main blocker: Waves

Thursday

❌ poor conditions

Main blocker: Waves

Best available hours

  • Wed 23:00 — Fair (0.39) · still limited by waves, wind
  • Wed 19:00 — Fair (0.38) · still limited by waves, wind
  • Wed 21:00 — Fair (0.36) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (54 hours)
  • Wind (50 hours)
  • Tide/current (48 hours)

Jellyfish drift risk

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

Low · 23/100

Low peak drift risk around Tue 16:00.

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 13:00

Wed 01:00, Wed 13:00, Thu 14:00

Nearby alternatives in Cook Islands

Aitutaki Lagoon

265 km away

❌ Poor

Advanced forecast data

Viewing historical data

Sun 21:00 – Wed 21:00 (-10)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.38 around Mon 09:00; 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 2.34m to 2.96m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 5.8 to 8.64m/s).

Tides range from 0.27m to 0.93m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
poor ❌ Limited
poor ❌ Limited
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
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
poor ❌ Limited
fair ⚠️ Fair
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
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
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
Sun 21:00 2.34 · high 6.65 · high 23.60 · good poor
Sun 22:00 2.36 · high 7.32 · high 23.70 · good poor
Sun 23:00 2.38 · high 7.57 · high 23.70 · good fair
Mon 00:00 2.40 · high 7.91 · high 23.70 · good poor
Mon 01:00 2.46 · high 7.46 · high 23.70 · good poor
Mon 02:00 2.50 · high 7.49 · high 23.80 · good poor
Mon 03:00 2.56 · high 8.02 · high 23.80 · good poor
Mon 04:00 2.62 · high 8.09 · high 23.80 · good poor
Mon 05:00 2.66 · high 8.24 · high 23.80 · good poor
Mon 06:00 2.72 · high 8.13 · high 23.80 · good poor
Mon 07:00 2.76 · high 8.41 · high 23.80 · good poor
Mon 08:00 2.82 · high 8.64 · high 23.80 · good poor
Mon 09:00 2.86 · high 8.60 · high 23.80 · good poor
Mon 10:00 2.88 · high 8.04 · high 23.80 · good poor
Mon 11:00 2.90 · high 7.60 · high 23.80 · good poor
Mon 12:00 2.92 · high 7.15 · high 23.80 · good poor
Mon 13:00 2.94 · high 7.15 · high 23.80 · good poor
Mon 14:00 2.94 · high 7.56 · high 23.80 · good poor
Mon 15:00 2.96 · high 7.39 · high 23.90 · good poor
Mon 16:00 2.96 · high 7.20 · high 23.90 · good poor
Mon 17:00 2.96 · high 7.02 · high 23.90 · good poor
Mon 18:00 2.96 · high 7.18 · high 23.90 · good poor
Mon 19:00 2.94 · high 6.50 · high 24.00 · good fair
Mon 20:00 2.92 · high 5.80 · high 24.00 · good poor
Mon 21:00 2.90 · high 7.36 · high 24.10 · good poor
Mon 22:00 2.88 · high 7.69 · high 24.10 · good poor
Mon 23:00 2.88 · high 7.83 · high 24.10 · good poor
Tue 00:00 2.86 · high 7.94 · high 24.20 · good poor
Tue 01:00 2.84 · high 8.05 · high 24.20 · good poor
Tue 02:00 2.82 · high 8.18 · high 24.20 · good poor
Tue 03:00 2.80 · high 8.82 · high 24.20 · good poor
Tue 04:00 2.80 · high 8.91 · high 24.20 · good poor
Tue 05:00 2.80 · high 8.61 · high 24.20 · good poor
Tue 06:00 2.80 · high 8.51 · high 24.20 · good poor
Tue 07:00 2.78 · high 8.21 · high 24.20 · good poor
Tue 08:00 2.78 · high 8.51 · high 24.20 · good poor
Tue 09:00 2.76 · high 8.16 · high 24.30 · good poor
Tue 10:00 2.74 · high 7.96 · high 24.30 · good poor
Tue 11:00 2.72 · high 7.84 · high 24.30 · good poor
Tue 12:00 2.70 · high 7.91 · high 24.30 · good poor
Tue 13:00 2.68 · high 8.05 · high 24.30 · good poor
Tue 14:00 2.66 · high 7.96 · high 24.30 · good poor
Tue 15:00 2.64 · high 7.93 · high 24.30 · good poor
Tue 16:00 2.64 · high 8.38 · high 24.20 · good poor
Tue 17:00 2.62 · high 7.82 · high 24.20 · good poor
Tue 18:00 2.62 · high 8.09 · high 24.20 · good poor
Tue 19:00 2.62 · high 8.11 · high 24.20 · good poor
Tue 20:00 2.62 · high 7.44 · high 24.20 · good poor
Tue 21:00 2.62 · high 7.22 · high 24.30 · good fair
Tue 22:00 2.62 · high 6.61 · high 24.30 · good fair
Tue 23:00 2.60 · high 6.56 · high 24.30 · good fair
Wed 00:00 2.60 · high 6.48 · high 24.30 · good poor
Wed 01:00 2.58 · high 6.42 · high 24.30 · good poor
Wed 02:00 2.56 · high 6.24 · high 24.30 · good poor
Wed 03:00 2.54 · high 6.05 · high 24.30 · good poor
Wed 04:00 2.52 · high 6.41 · high 24.20 · good poor
Wed 05:00 2.52 · high 6.36 · high 24.20 · good poor
Wed 06:00 2.50 · high 6.06 · high 24.20 · good poor
Wed 07:00 2.66 · high 7.29 · high 24.20 · good poor
Wed 08:00 2.66 · high 7.34 · high 24.20 · good poor
Wed 09:00 2.66 · high 7.49 · high 24.10 · good poor
Wed 10:00 2.68 · high 7.59 · high 24.10 · good poor
Wed 11:00 2.68 · high 7.25 · high 24.10 · good poor
Wed 12:00 2.70 · high 7.47 · high 24.10 · good poor
Wed 13:00 2.72 · high 7.34 · high 24.10 · good poor
Wed 14:00 2.74 · high 7.03 · high 24.10 · good poor
Wed 15:00 2.76 · high 6.90 · high 24.10 · good poor
Wed 16:00 2.78 · high 7.04 · high 24.10 · good poor
Wed 17:00 2.82 · high 6.97 · high 24.10 · good poor
Wed 18:00 2.84 · high 6.95 · high 24.10 · good fair
Wed 19:00 2.86 · high 6.90 · high 24.10 · good fair
Wed 20:00 2.86 · high 6.60 · high 24.10 · good fair