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Kahalu'u Beach Park Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Kahalu'u Beach Park surfForecast / HAW – Big Island / USA
16 Day Weather and Surf, issued 1 am Wednesday 13 May 2026 HSTForecast update in hr min s Forecast update imminent
Kahalu'u Beach Park surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahalu'u Beach Park sea temperature is
26.0° C
(Which is 1.0°C warmer than normal for this time of year)Best Forecast Surf Conditions for Kahalu'u Beach Park this week:
The surf forecast for Kahalu'u Beach Park over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (May 13) at 5PM. The primary swell is predicted to be 0.3m and 14s period with a secondary swell of 0.3m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kahalu'u Beach Park in the next 16 days are 0.8m 15s and forecast to arrive on Monday (May 18) at 11AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 13th May) | 1ft (0.3m) 14s |
| Best Surf | 8AM (Sun 17th May) | 1.5ft (0.5m) 16s |
| Most Powerful | 11AM (Mon 18th May) | 2.5ft (0.8m) 15s |
Table - best surf conditions forecast for Kahalu'u Beach Park over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 26°C on Wed morning, min 24°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sun afternoon. Warm (max 27°C on Sat morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | Sunday 17 | Monday 18 | Tuesday 19 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
SSW 14 | SSW 14 | S 13 | SSW 18 | NW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 17 | SSW 17 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | |
68 | 36 | 54 | 31 | 34 | 69 | 65 | 64 | 64 | 107 | 92 | 96 | 135 | 196 | 138 | 246 | 107 | 236 | 180 | 239 | 158 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | glassy | glassy | on | cross-off | cross | cross-on | cross-on | glassy | on | cross-on | cross | cross-on | cross-on | glassy | on | on | glassy | on | glassy | cross-on | |
High Tide | 1:57PM0.72m | 1:23AM0.49m | 2:36PM0.82m | 2:09AM0.44m | 3:17PM0.89m | 2:54AM0.40m | 4:01PM0.93m | 3:40AM0.35m | 4:47PM0.94m | 4:28AM0.32m | 5:35PM0.92m | 5:22AM0.29m | 6:27PM0.88m | ||||||||
Low Tide | 8:17PM0.23m | 7:31AM0.02m | 9:15PM0.19m | 8:04AM-0.01m | 10:11PM0.16m | 8:40AM-0.03m | 11:06PM0.14m | 9:18AM-0.03m | 00:03AM0.14m | 10:00AM-0.01m | 1:02AM0.15m | 10:44AM0.03m | 2:04AM0.15m | ||||||||
 |  |  | | |  | |  |  | | | | |  | | | |  | | | | |
 | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — |
 | — | 6:51 | — | — | 6:51 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — |
— | — | 1 | — | — | — | — | 2 | — | — | — | — | — | 2 | 1 | — | 2 | 2 | — | 1 | 3 | |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 27 | 27 | 26 | 27 | 27 | 27 | 26 | 26 | 25 | 26 | 26 | 25 |
28 | 27 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 28 | 30 | 29 | 31 | 30 | 29 | 29 | 29 | 29 | 28 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | S 13 | S 12 | NW 15 | NW 14 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SSW 17 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
 kJ | 68 | 36 | 54 | 25 | 34 | 49 | 65 | 64 | 64 | 107 | 54 | 96 | 135 | 196 | 138 | 246 | 107 | 236 | 180 | 239 | 158 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | S 13 | SSW 14 | SSW 14 | S 12 | S 12 | NW 13 | NW 12 | NW 12 | NW 11 | SSW 17 | SSE 11 | SW 14 | SW 21 | S 10 | SW 19 | SSW 16 | S 10 | SSW 17 | SSW 10 | SSW 16 |
| kJ | 22 | 31 | 21 | 20 | 11 | 26 | 44 | 54 | 22 | 19 | 92 | 40 | 52 | 117 | 32 | 96 | 87 | 17 | 99 | 18 | 25 |
Swell 3 Height (m) Direction Period (s) | S 13 | W 10 | SSW 18 | SSW 18 | SSW 12 | SW 16 | SSW 11 | S 11 | SSW 18 | S 12 | SSE 12 | SW 14 | S 11 | SSE 10 | SSW 18 | S 10 | SSW 20 | SSW 18 | SW 18 | NNW 11 | SSW 7 |
| kJ | 14 | 8 | 31 | 31 | 14 | 69 | 25 | 9 | 62 | 25 | 27 | 53 | 20 | 22 | 61 | 18 | 75 | 31 | 49 | 12 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SSW 6 | SW 9 | — | — | — | — | NW 9 | — | NNW 4 | SSW 10 | NNW 2 | — |
| kJ | — | — | — | — | — | — | — | — | — | 3 | 3 | — | — | — | — | 13 | — | 2 | 18 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 125 | 0 | 0 | 94 | 0 | 6 | 99 | 94 | 0 | 99 | 125 | 2 | 81 | 52 | 0 | 125 | 99 | 0 | 125 | 0 | 6 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Kahalu'u Beach Park 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 Kahalu'u Beach Park Surf forecast
The above surf forecast table for Kahalu'u Beach Park provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kahalu'u Beach Park can be found by selecting the local surf guide option on the grey menu. Our Kahalu'u Beach Park 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 (Kahalu'u Beach Park) 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 Kahalu'u Beach Park 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.
Kahalu'u Beach Park is 94 km (58 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.
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