Surf Forecasts:
Osterizers/Rainbows surf forecast from 21 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 2AM (local time) - 3.5ft (1.1m), 9s period, NE swell with cross-offshore winds.
- Most powerful swell: Saturday 25 Jul, 2PM (local time) - 6ft (1.8m), 8s period, NE swell with 369 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 2AM (local time) - 3.5ft (1.1m), 9s period with NE swell.
Best Forecast Surf Conditions for Osterizers/Rainbows this week:
The surf forecast for Osterizers/Rainbows over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 2AM. The primary swell is predicted to be 1.1m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Osterizers/Rainbows in the next 16 days are 1.8m 8s and forecast to arrive on Saturday (Jul 25) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Jul 22) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 28th Jul) | 3.5ft (1.1m) 9s |
| Best Surf | 2AM (Tue 28th Jul) | 3.5ft (1.1m) 9s |
| Most Powerful | 2PM (Sat 25th Jul) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Osterizers/Rainbows over the next 16 days.
The Lowdown
Alright, let’s get into it. This is Rusty, and I’m looking at the next 16 days for Osterizers/Rainbows.
Right off the bat, it’s a quiet start. The first few days are flat or showing tiny 1ft swell with poor surf conditions, so there’s really nothing to chase. The water temp is sitting at 80°, which is pretty much normal for this time of year. We’ve got a gap of a few days with no real recommendations until Thursday the 25th.
Thursday the 25th of July shows a bit of life. The morning brings a 5ft swell from the NE with a short period of 8 seconds. The combined energy is moderate at 241, but the wind is still cross-off, and the conditions are deemed marginal. Not a standout, but it’s the first sign of something. The afternoon pushes up to 6ft, but the energy jumps to 353, and the wind is still cross-off, and the surf is only marginal. It might be a bit juicy for the more experienced crew, but it’s not clean.
The real standout of the whole window is Saturday, August 4th. The whole week prior is a bit of a write-off, but then we get a morning with 5ft of NE swell, short period at 8 seconds, but the wind is a light breeze from the ENE, which is cross-off and will be super clean. The combined energy is a solid 278, and the forecast says “expect good surf conditions.” This is the one to circle on the calendar. It’s the best looking day of the whole run. The swell is 5ft, so it’s definitely manageable for most, and the light wind is a major positive. The afternoon holds up with the same size and a 269 energy, still with clean conditions.
Now, the longer range into the second week is a bit of a mixed bag. The 5th of August shows a morning with a 1ft long-period groundswell from the SW (16 seconds), but the energy is weak at 84. The afternoon bumps up to 4ft from the NE, but it’s only “surfable” – nothing to get too excited about. That Saturday the 4th is the clear winner.
So, to sum it up: paddle out on Saturday, August 4th. The rest of the window is mostly small or marginal, with a few days of okay but not great surf. The short period swells on the 25th and 26th might be fun for a quick session, but the 4th is the one you want to be on the water for.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 26°C on Thu afternoon, min 24°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Fri morning. Warm (max 26°C on Sat afternoon, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 17 | SW 16 | SW 15 | SW 24 | ENE 6 | SW 22 | SW 16 | SW 16 | SW 18 | SW 18 | SW 17 | SW 16 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 43 | 42 | 37 | 0 | 0 | 0 | 40 | 41 | 159 | 154 | 147 | 65 | 241 | 353 | 291 | 276 | 305 | 186 | 179 | 205 | 172 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:22AM0.45m | 7:02PM0.43m | 12:58PM0.51m | 1:45PM0.57m | 2:19PM0.62m | 2:48PM0.66m | 00:37AM0.30m | 3:16PM0.69m | 1:36AM0.33m | 3:43PM0.71m | 2:20AM0.36m | ||||||||||
Low Tide | 3:17PM0.37m | 3:26AM0.09m | 4:24AM0.07m | 5:26AM0.05m | 6:22AM0.02m | 9:40PM0.26m | 7:08AM-0.01m | 9:46PM0.24m | 7:48AM-0.04m | 10:02PM0.22m | |||||||||||
 |  |  |  | |  | | | | | | | | |  | | | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:08 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — |
mm | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | 2 | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 24 | 25 | 26 | 25 | 24 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 26 | 25 | 26 | 25 | 24 | 24 | 24 | 24 | 23 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 22 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | E 12 | SW 23 | E 12 | SW 20 | SW 20 | SW 18 | SW 18 | SW 17 | SW 16 | SSW 16 | SSW 18 | SSW 18 | E 16 | E 16 | E 15 | E 14 | E 14 | E 14 |
| kJ | 97 | 89 | 80 | 66 | 138 | 103 | 100 | 97 | 159 | 154 | 147 | 65 | 100 | 204 | 204 | 391 | 582 | 640 | 590 | 602 | 758 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 13 | E 12 | SSW 11 | S 11 | SW 22 | S 11 | S 14 | ENE 10 | S 12 | S 12 | SSW 12 | SW 19 | E 13 | E 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 |
| kJ | 11 | 32 | 73 | 23 | 20 | 118 | 23 | 33 | 20 | 26 | 26 | 28 | 96 | 30 | 126 | 175 | 146 | 140 | 86 | 84 | 68 |
Swell 3 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 15 | SW 24 | S 13 | S 12 | SW 16 | SW 16 | S 13 | NNW 9 | SSW 21 | SSW 17 | E 14 | SSW 11 | E 12 | SSW 11 | SSW 10 | SW 9 | SSW 9 | SW 8 | SW 8 |
| kJ | 43 | 42 | 37 | 142 | 29 | 25 | 40 | 41 | 31 | 8 | 44 | 55 | 33 | 25 | 25 | 11 | 10 | 13 | 8 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 5 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 9 |
| kJ | 99 | 87 | 136 | 140 | 171 | 65 | 186 | 197 | 175 | 204 | 278 | 257 | 241 | 353 | 291 | 276 | 305 | 186 | 179 | 205 | 172 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 6 | 8 | 34 | 4 | 6 | 4 | 6 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 0 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Osterizers/Rainbows Surf forecast
The above surf forecast table for Osterizers/Rainbows provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Osterizers/Rainbows can be found by selecting the local surf guide option on the grey menu. Our Osterizers/Rainbows surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Osterizers/Rainbows) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Osterizers/Rainbows may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Osterizers/Rainbows is 21 km (13 miles) from Wailuku. If you plan a vacation in Maui, look for hotels and other accommodation in Wailuku. Wailuku has rooms for a wide range of budgets as well as car hire and transport links.
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