Surf Forecasts:
Manini Beach surf forecast from 5 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 8PM (local time) - 2ft (0.6m), 20s period, S swell with glassy winds.
- Most powerful swell: Tuesday 11 Aug, 11PM (local time) - 2.5ft (0.7m), 20s period, S swell with 373 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 8PM (local time) - 1.5ft (0.4m), 15s period with SW swell.
Best Forecast Surf Conditions for Manini Beach this week:
The surf forecast for Manini Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 05) at 8PM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.4m and 11s. Another secondary swell of 0.4m and 2s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Manini Beach in the next 16 days are 0.7m 20s and forecast to arrive on Tuesday (Aug 11) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 7s period and expected on Friday (Aug 07) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 5th Aug) | 1.5ft (0.4m) 15s |
| Best Surf | 8PM (Tue 11th Aug) | 2ft (0.6m) 20s |
| Most Powerful | 11PM (Tue 11th Aug) | 2.5ft (0.7m) 20s |
Table - best surf conditions forecast for Manini Beach over the next 16 days.
The Lowdown
Alright, Rusty here, checkin’ in on Manini Beach. This is a reef break that works fairly often and is best for beginners. The start’s slow though. The whole run starts Wednesday the 5th of August with tiny 1ft swell from the SSW, but the conditions are poor. Water temp is about normal for this time of year.
Wednesday and Thursday mornings and afternoons are weak with light cross-onshore wind and poor surf. Friday the 7th stays poor, even though the period bumps up to 20 seconds on Friday afternoon, the energy is still low (169). Saturday the 8th of August morning picks up to 2ft from the S with 14 second period and moderate energy (233), but it’s still marginal.
First real highlight hits Sunday the 9th of August. Swell at 1 to 2ft from the S, moderate energy (272), and glassy wind on Sunday afternoon. That’s your cleanest early window. Small but tidy for the beginner crowd.
Monday the 10th of August sees swell up to 3ft from the SSW at 15 seconds, moderate energy (347), and the afternoon turns glassy with rain showers. Good conditions again.
The standout is Wednesday the 12th of August. Swell hits 3ft from the S, period 18 seconds, and the combined energy is strong at 788. Wind stays light offshore from the WSW in the morning and from the W at 5 km/h in the afternoon. That’s the top dog of the forecast. Long period means longer waits but better shape.
Thursday the 13th and Friday the 14th keep consistent 3 to 4ft S swell with 14-15 second periods and strong energy (651 to 742). Winds stay offshore from the WSW and W. Solid paddlin’ days.
From Saturday the 15th onward, it fades. Monday the 17th of August afternoon turns glassy with 2ft W swell and 13 second period. Nice little cleanup.
After that, it dribbles out. The big moment is Wednesday the 12th. Mark it.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 28°C on Fri morning, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Mon afternoon. Warm (max 28°C on Sun morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 15 | SSW 11 | SW 15 | SSW 10 | SW 14 | SW 14 | SSW 14 | SSW 16 | SW 20 | SW 19 | SW 18 | SSW 18 | SSW 18 | SSW 18 | S 16 | S 16 | SSW 15 | SSW 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 70 | 46 | 57 | 37 | 38 | 52 | 80 | 50 | 98 | 95 | 106 | 124 | 109 | 103 | 135 | 186 | 292 | 240 | 186 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | on | glassy | on | cross-on | glassy | on | glassy | glassy | on | glassy | glassy |
High Tide | 9:39AM0.48m | 7:14PM0.39m | 11:25AM0.53m | 12:43PM0.60m | 10:26PM0.28m | 1:38PM0.67m | 00:26AM0.29m | 2:23PM0.73m | 1:37AM0.32m | 3:04PM0.76m | 2:32AM0.37m | ||||||||
Low Tide | 2:07AM0.04m | 3:16PM0.29m | 3:03AM0.03m | 4:16AM0.02m | 8:41PM0.23m | 5:33AM-0.00m | 8:55PM0.19m | 6:41AM-0.03m | 9:21PM0.15m | 7:39AM-0.06m | 9:49PM0.12m | ||||||||
 |  |  |  |  | | | | |  | | | | | | | |  | | |
 | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 6:58 | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 3 | 3 |
Temp °C | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 27 |
Feels °C | 32 | 31 | 31 | 32 | 30 | 30 | 30 | 31 | 32 | 31 | 30 | 30 | 32 | 32 | 31 | 31 | 32 | 31 | 33 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SW 14 | SSW 14 | S 11 | SW 20 | SW 13 | S 14 | SSW 18 | SSW 13 | SSW 13 | S 16 | S 16 | SSW 15 | SSW 15 | SSW 15 |
| kJ | 70 | 46 | 45 | 37 | 38 | 52 | 80 | 20 | 98 | 46 | 106 | 124 | 99 | 96 | 135 | 186 | 292 | 240 | 186 |
Swell 2 Height (m) Direction Period (s) | SW 15 | S 12 | S 12 | SW 3 | SW 14 | SSW 10 | S 11 | SW 14 | SSW 16 | SW 19 | SW 18 | SW 13 | SW 17 | SSW 18 | SSW 12 | SSW 12 | WNW 11 | SSW 11 | S 11 |
| kJ | 57 | 26 | 26 | 1 | 31 | 19 | 21 | 29 | 50 | 95 | 83 | 43 | 77 | 103 | 85 | 56 | 40 | 42 | 64 |
Swell 3 Height (m) Direction Period (s) | S 13 | W 13 | SW 15 | S 12 | W 12 | W 12 | W 12 | SSW 16 | S 10 | SSW 15 | W 12 | SSW 10 | SSW 18 | SW 16 | WNW 12 | WNW 12 | S 9 | WNW 11 | W 10 |
| kJ | 31 | 29 | 57 | 25 | 26 | 27 | 11 | 50 | 19 | 43 | 25 | 19 | 109 | 67 | 28 | 45 | 15 | 39 | 19 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SSW 2 | — | — | NW 7 | SW 10 | SSW 10 | NW 3 | — | — | SW 10 | — | — | — | — |
| kJ | — | — | — | — | — | 1 | — | — | 2 | 23 | 19 | 3 | — | — | 24 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 97 | 97 | 19 | 97 | 97 | 0 | 97 | 97 | 0 | 97 | 97 | 0 | 138 | 0 | 0 | 138 | 0 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Manini Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Manini Beach Surf forecast
The above surf forecast table for Manini Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Manini Beach can be found by selecting the local surf guide option on the grey menu. Our Manini Beach 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 (Manini Beach) 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 Manini Beach 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.
Manini Beach is 92 km (57 miles) from Hilo. If you plan a vacation in Big Island, look for hotels and other accommodation in Hilo. Hilo has rooms for a wide range of budgets as well as car hire and transport links.
Nearest