Surf Forecasts:
Kailua Beach surf forecast from 29 Aug 2026:
- Most powerful swell: Saturday 5 Sep, 2PM (local time) - 10ft (3.0m), 8s period, ENE swell with 1,318 kJ wave energy.
Best Forecast Surf Conditions for Kailua Beach this week:
The most powerful waves expected at Kailua Beach in the next 16 days are 3.0m 8s and forecast to arrive on Saturday (Sep 05) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 16s period and expected on Wednesday (Sep 02) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sat 5th Sep) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Kailua Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks.
Right off the bat, I gotta be straight with you – we’re looking at a pretty barren run here. The whole sixteen-day window is a bit of a write-off for decent surf. There's not a single moment I'd call good, and the conditions are just going to be a battle from start to finish. We’ve got a long stretch of poor surf ahead.
Let's start with Kailua Beach (Oahu). The water temp is sitting at a warm 81°, which is bang on average for this time of year, so no surprises there. But that’s where the good news ends. From Saturday the 29th of August right through to the end of the first week, we’re dealing with a relentless ENE tradewind. It’s blowing at 19 to 22 mph, and it’s either cross-on or straight onshore, which is just going to chop everything to pieces. The swell is hanging around 5 ft to 7 ft with a short, weak period of 6 to 8 seconds, and the combined energy is weak to moderate at best (298 to 504). The wave comment says it all: "poor surf conditions." It’s not going to be any fun out there.
Moving into the second week, things actually get bigger, but not better. Around Saturday the 5th of September, we see the swell jump up to 10 ft to 12 ft with a still short 8-second period, and the energy climbs into the strong range (1014 to 1497). The wind is still howling onshore at 25 mph. This is getting into expert-only territory size-wise, but with that onshore wind, even the experienced guys are going to have a tough time. It might actually be more interesting for the kite surfers than us paddle guys.
Then on Sunday the 6th of September, the real juice shows up. We’re talking a 16 ft swell from the E with an 11-second period and a massive combined energy of 5766. That’s a lot of power, but the wind is a strong cross-onshore at 28 mph. That’s a recipe for a total mess. The setup at Kailua is a beach/point, so with that much size and that wind, it’s going to be a washing machine. No good for us.
The rest of the second week settles down a bit, but the winds stay onshore or cross-onshore, and the swell stays in the 5 ft to 8 ft range with short periods. The combined energy is moderate to strong, but the "poor surf conditions" tag keeps popping up. There’s just no window of clean, calm conditions to make anything work. Honestly, it’s one of those stretches where you might as well find something else to do. The forecasts can always change, but as it stands, I wouldn’t bother waxing up for a while.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun night. Warm (max 26°C on Sun afternoon, min 25°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Warm (max 26°C on Tue morning, min 24°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||||
172 | 207 | 405 | 358 | 316 | 248 | 397 | 387 | 419 | 392 | 471 | 541 | 354 | 354 | 444 | 383 | 294 | 294 | 401 | 376 | 581 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | cross-on | on | on | on | on | on | on |
High Tide | 3:17PM0.77m | 3:44AM0.66m | 3:35PM0.72m | 4:29AM0.68m | 3:51PM0.67m | 5:22AM0.68m | 4:02PM0.61m | 6:31AM0.67m | 3:59PM0.56m | 8:17AM0.68m | 10:21AM0.72m | ||||||||||
Low Tide | 8:54AM0.19m | 9:41PM0.18m | 9:31AM0.26m | 10:03PM0.15m | 10:11AM0.34m | 10:30PM0.13m | 10:57AM0.42m | 11:01PM0.13m | 12:04PM0.50m | 11:40PM0.13m | 00:39AM0.15m | 2:15AM0.17m | |||||||||
6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | |
— | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | 3 | 1 | — | 2 | — | — | — | 1 | — | 1 |
Temp °C | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 23 | 22 | 22 | 22 | 24 | 23 | 23 | 24 | 23 | 24 | 24 | 23 | 26 | 25 | 24 | 22 | 23 | 22 | 22 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 12 | E 12 | S 12 | ENE 11 | ENE 10 | S 11 | S 10 | S 10 | SSW 18 | SSW 18 | SSW 17 | S 16 | S 16 | E 13 | E 13 | E 12 | E 12 | E 13 | E 13 | E 12 |
126 | 77 | 75 | 25 | 40 | 37 | 21 | 19 | 18 | 107 | 107 | 99 | 130 | 79 | 88 | 121 | 109 | 102 | 167 | 209 | 109 | |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | S 12 | SSW 16 | S 12 | S 11 | SSW 15 | SSW 14 | S 19 | S 9 | S 12 | S 10 | E 14 | E 14 | S 15 | S 14 | ESE 10 | S 13 | S 13 | S 13 | S 13 |
54 | 54 | 26 | 26 | 25 | 22 | 22 | 21 | 30 | 7 | 11 | 8 | 32 | 37 | 69 | 65 | 35 | 56 | 55 | 55 | 30 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 17 | SSW 17 | W 8 | SSW 15 | SSW 15 | S 21 | S 19 | S 14 | S 15 | E 15 | E 14 | S 10 | E 12 | S 11 | S 10 | S 14 | E 15 | ESE 11 | N 13 | N 12 |
12 | 12 | 28 | 1 | 23 | 22 | 8 | 29 | 4 | 4 | 4 | 14 | 8 | 26 | 21 | 18 | 59 | 40 | 25 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
172 | 207 | 405 | 358 | 316 | 248 | 397 | 387 | 419 | 392 | 471 | 541 | 354 | 354 | 444 | 383 | 294 | 294 | 401 | 376 | 581 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 48 | 122 | 46 | 48 | 41 | 46 | 48 | 41 | 41 | 122 | 41 | 41 | 46 | 41 | 41 | 125 | 41 | 122 | 125 | 46 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Kailua Beach Surf forecast
The above surf forecast table for Kailua Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kailua Beach can be found by selecting the local surf guide option on the grey menu. Our Kailua 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 (Kailua 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 Kailua 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.
Kailua Beach is 0 km (0 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.











