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Kahana Bay Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Kahana Bay surfForecast / HAW – Oahu / USA
12 Day Weather and Surf, issued 1 pm Wednesday 21 Jan 2026 HSTForecast update in hr min s Forecast update imminent
Kahana Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahana Bay sea temperature is
24.5° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Kahana Bay this week:
The surf forecast for Kahana Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jan 23) at 5PM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.8m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kahana Bay in the next 12 days are 1.8m 15s and forecast to arrive on Wednesday (Jan 28) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Wednesday (Jan 28) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Fri 23rd Jan) | 4.5ft (1.4m) 12s |
| Best Surf | 11PM (Tue 27th Jan) | 5ft (1.5m) 12s |
| Most Powerful | 5AM (Wed 28th Jan) | 6ft (1.8m) 15s |
Table - best surf conditions forecast for Kahana Bay over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 4mm), mostly falling on Fri afternoon. Warm (max 23°C on Thu morning, min 21°C on Wed night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Sat afternoon. Warm (max 26°C on Sun afternoon, min 21°C on Sat afternoon). Wind will be generally light. | ||||||||||||||||||||||
Wed 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 11 | 11 | 10 | 15 | 14 | 10 | 9 | 5 | 6 | 7 | 14 | 13 | 16 | 14 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 466 | 336 | 810 | 769 | 607 | 554 | 536 | 341 | 204 | 130 | 79 | 72 | 70 | 42 | 61 | 135 | 121 | 577 | 1057 | 883 | 1171 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | on | cross- on | cross- on | cross- off | cross- off | glass | glass | off | off | cross- off | cross- on | on | cross- on | cross- on | cross | cross | glass | off | ||
High Tide / height (m) | 3:27PM 0.40 | 4:32AM 0.76 | 4:26PM 0.40 | 4:48AM 0.69 | 5:39PM 0.42 | 4:59AM 0.63 | 7:25PM 0.45 | 5:02AM 0.56 | 10:03PM 4:19AM 0.53 0.50 | 11:31PM 0.66 | 12:18AM 0.76 | ||||||||||||
Low Tide / height (m) | 9:44PM -0.02 | 11:38AM 0.12 | 10:19PM 0.09 | 12:09PM 0.08 | 10:59PM 0.20 | 12:45PM 0.03 | 11:52PM 0.33 | 1:31PM -0.00 | 2:27AM 0.44 | 2:31PM -0.04 | 3:43PM -0.08 | ||||||||||||
Wed 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | |||||||||||||||||
| Sunrise | - | - | 7:11 | - | - | 7:11 | - | - | 7:11 | - | - | 7:11 | - | - | 7:09 | - | - | 7:09 | - | - | 7:09 | ||
| Sunset | 6:13 | - | - | 6:14 | - | - | 6:15 | - | - | 6:15 | - | - | 6:15 | - | - | 6:16 | - | - | 6:16 | - | - | ||
 |  | | | |  |  | | | |  |  |  |  | | | | | |  | | |||
Rain (mm) | - | - | - | - | - | 1 | 3 | - | - | 2 | - | - | - | 3 | 1 | - | - | - | - | - | - | ||
| Temp. °C | 22 | 21 | 23 | 23 | 21 | 22 | 22 | 22 | 23 | 22 | 22 | 25 | 26 | 24 | 22 | 22 | 21 | 23 | 23 | 23 | 25 | ||
| Feels °C (?) | 19 | 19 | 23 | 22 | 21 | 21 | 23 | 23 | 25 | 24 | 24 | 27 | 27 | 26 | 21 | 20 | 18 | 22 | 23 | 25 | 26 | ||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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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 Kahana Bay 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 Kahana Bay Surf forecast
The above surf forecast table for Kahana Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kahana Bay can be found by selecting the local surf guide option on the grey menu. Our Kahana Bay 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 (Kahana Bay) 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 Kahana Bay 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.
Kahana Bay is 17 km (11 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.
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