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Waimanalo Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Waimanalo surfForecast / HAW – Oahu / USA
16 Day Weather and Surf, issued 1 pm Thursday 16 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Waimanalo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimanalo sea temperature is
24.1° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Waimanalo this week:
The surf forecast for Waimanalo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Apr 20) at 8AM. The primary swell is predicted to be 1.0m and 6s period with a secondary swell of 0.4m and 7s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Waimanalo in the next 16 days are 1.3m 14s and forecast to arrive on Wednesday (Apr 22) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 11s period and expected on Thursday (Apr 16) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 20th Apr) | 3.5ft (1.0m) 6s |
| Best Surf | 2PM (Tue 21st Apr) | 1.5ft (0.5m) 14s |
| Most Powerful | 2AM (Wed 22nd Apr) | 4.5ft (1.3m) 14s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Warm (max 24°C on Thu afternoon, min 23°C on Thu night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 30mm), heaviest during Sun night. Warm (max 25°C on Tue afternoon, min 22°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||
| 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) (?) | 7 | 7 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 15 | 13 | 14 | 13 | 13 | 12 | 11 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 33 | 46 | 27 | 28 | 65 | 98 | 99 | 106 | 83 | 71 | 66 | 48 | 37 | 50 | 75 | 111 | 644 | 484 | 454 | 336 | 222 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- off | cross- off | off | off | cross- on | on | on | cross- on | cross- on | cross- on | ||
High Tide / height (m) | 2:43PM 0.57 | 1:50AM 0.41 | 3:27PM 0.62 | 2:11AM 0.37 | 4:15PM 0.64 | 2:32AM 0.33 | 5:08PM 0.63 | 2:45AM 0.29 | 6:08PM 0.60 | 7:22PM 0.57 | 8:49PM 0.54 | ||||||||||||
Low Tide / height (m) | 8:34PM 0.11 | 8:17AM -0.13 | 9:27PM 0.15 | 8:48AM -0.16 | 10:25PM 0.18 | 9:22AM -0.16 | 11:35PM 0.21 | 10:01AM -0.14 | 10:45AM -0.10 | 11:38AM -0.04 | 12:58PM 0.02 | ||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||
| Sunrise | - | - | 6:09 | - | - | 6:09 | - | - | 6:07 | - | - | 6:07 | - | - | 6:07 | - | - | 6:05 | - | - | 6:05 | ||
| Sunset | 6:50 | - | - | 6:50 | - | - | 6:51 | - | - | 6:51 | - | - | 6:51 | - | - | 6:52 | - | - | 6:52 | - | - | ||
 |  | |  |  | | | |  | |  | |  | | | |  | | | | | |||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 5 | - | 4 | 7 | - | 3 | 10 | 1 | 3 | 5 | 1 | ||
| Temp. °C | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 23 | 24 | 24 | 24 | ||
| Feels °C (?) | 25 | 23 | 22 | 22 | 23 | 22 | 25 | 23 | 26 | 26 | 25 | 27 | 26 | 27 | 25 | 27 | 25 | 24 | 24 | 25 | 25 | ||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Waimanalo 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 Waimanalo Surf forecast
The above surf forecast table for Waimanalo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waimanalo can be found by selecting the local surf guide option on the grey menu. Our Waimanalo 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 (Waimanalo) 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 Waimanalo 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.
Waimanalo is 7 km (4 miles) from Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.
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