
Surf Forecasts:
Waikiki surf forecast from 8 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 2AM (local time) - 3ft (0.9m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 11PM (local time) - 18ft (5.5m), 15s period, SSW swell with 11,991 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 2AM (local time) - 3ft (0.9m), 14s period with SSW swell.
Best Forecast Surf Conditions for Waikiki this week:
The surf forecast for Waikiki over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 2AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.0m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Waikiki in the next 16 days are 5.5m 15s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 12s period and expected on Monday (Sep 07) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 9th Sep) | 3ft (0.9m) 14s |
| Best Surf | 2AM (Wed 9th Sep) | 3ft (0.9m) 14s |
| Most Powerful | 11PM (Mon 7th Sep) | 18ft (5.5m) 15s |
Table - best surf conditions forecast for Waikiki over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at the next 16 days for our stretch of coast. It’s a bit of a mixed bag, so let’s get into it.
The first real action kicks off Monday afternoon, September 7th. We’ve got a solid 7ft SW groundswell hitting Waikiki, with a period of 14 seconds. That’s a lot of energy in the water – the combined energy is a hefty 2180. The wind is a cross-off from the ESE at 25 mph, which is strong, but it’s keeping things clean. The water temp is sitting at 81°, which is pretty normal for this time of year. Honestly, this is the standout session of the whole run. The swell is big and the conditions are on, but that 7ft is getting up there, so it’s not for the faint of heart. For the experienced crew, this is the one to circle.
Tuesday morning, September 8th, the wind switches onshore from the SSW, and the swell jumps to 8ft, but the quality drops off. It’s messy. The afternoon doesn’t look much better with 6ft and onshore winds. We’ll let that one slide.
Wednesday morning, September 9th, the swell drops right down to 3ft from the SSW. The period is a long 14 seconds, so it’s a cleaner groundswell. The wind is light from the E, and the conditions are clean. It’s a much smaller day, but it’s surfable. The afternoon holds similar with a light offshore from the ENE. Not a standout, but a nice little session if you’re keen.
Thursday, September 10th, is a similar story. The swell is tiny, 2ft, but the period is very long at 16 seconds. The wind is a moderate offshore from the ENE all day, keeping the waves clean. The energy is moderate (451). It’s a long-period groundswell, so it’ll be lining up better on the inside, but it’s small. It’s a fun, mellow day, not a big one.
The rest of the first week and into the second week is a bit of a grind. We’ve got a long stretch of small, clean, but very ordinary waves from the 11th to the 13th. Sizes hover around 2ft to 2ft, with periods in the 15-16 second range. The wind is mostly offshore, which is a major positive, but there’s just not enough juice. The energy drops to three-digit numbers (124 to 480). These are days for the log or a longboard.
Then, around Monday afternoon, September 14th, we see a little spike. The swell is still small at 2ft, but the period jumps to a very long 22 seconds. The wind is offshore from the NE. That’s a very long-period groundswell, so it’ll be a bit tricky at the beach, but it’s clean. The energy is moderate (278).
The real hope comes back on Wednesday, September 16th. The morning shows a 3ft SW groundswell with an 18-second period. The wind is light from the E, and the conditions are very good. This is the second standout of the outlook. The energy is strong (558). It’s still a long period, but it’s got a bit more size and the conditions are looking prime. This is a promising one, but it’s over a week away, so keep an eye on the forecasts.
The week of September 17th to the 22nd offers a bit of a mixed run. We see some clean, small days with light winds, and then on Friday afternoon, September 18th, we get another promising window. The swell picks up to 4ft from the SSW with a period of 17 seconds, and the wind is light cross-off from the E. The energy is very strong (787). That’s a solid afternoon session.
Saturday, September 19th, holds a similar 3ft SSW swell, clean conditions, and strong energy (578). Good weekend potential.
The final highlight is Tuesday morning, September 22nd. The wind goes completely glassy, calm from the SSW, with a clean 2ft SSW groundswell. The period is 14 seconds. It’s a tiny, perfect morning for a longboard or a fish. The energy is moderate (244). A beautiful way to finish the run.
So, to sum it up: the best bet for the big stuff is Monday, September 7th. For the cleaner, more manageable waves, Wednesday, September 16th, and Friday, September 18th, look like the standouts. The rest of the time is small and clean, but not very powerful.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Mon night. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Winds decreasing (near gales from the SSE on Mon night, calm by Tue night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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) | SW 14 | SSW 14 | SSW 10 | SSW 8 | SSW 14 | SSW 14 | SSW 13 | E 13 | SSW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | NE 9 | SW 15 | SSW 15 | SW 15 |
Wave Graph | ||||||||||||||||||||
1999 | 8841 | 1000 | 443 | 356 | 269 | 257 | 176 | 181 | 154 | 268 | 261 | 229 | 226 | 242 | 124 | 0 | 107 | 84 | 54 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | on | glassy | cross-off | off | off | off | off | off | cross-off | off | cross-off | cross-off | off | off | off | off | off |
High Tide | 2:09AM0.32m | 2:28PM0.72m | 2:51AM0.39m | 3:05PM0.69m | 3:32AM0.45m | 3:39PM0.64m | 4:11AM0.50m | 4:12PM0.57m | 4:51AM0.54m | 4:42PM0.50m | 5:31AM0.57m | 5:11PM0.43m | ||||||||
Low Tide | 8:57PM0.08m | 7:26AM0.06m | 9:22PM0.06m | 8:21AM0.06m | 9:46PM0.05m | 9:12AM0.07m | 10:10PM0.04m | 10:02AM0.10m | 10:33PM0.04m | 10:52AM0.13m | 10:56PM0.05m | 11:45AM0.17m | 11:19PM0.06m | |||||||
— | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | |
mm | 4 | 12 | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 27 | 24 | 27 | 29 | 31 | 31 | 31 | 31 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 14 | ENE 12 | ENE 11 | SSW 8 | ENE 10 | ENE 9 | ENE 8 | ENE 7 | E 12 | SSW 13 | SW 16 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 6 | NE 8 | NE 8 | NE 8 |
1999 | 1190 | 785 | 443 | 353 | 165 | 117 | 203 | 141 | 129 | 268 | 380 | 245 | 250 | 160 | 128 | 31 | 57 | 57 | 58 | |
Swell 2 Height (m) Direction Period (s) | E 12 | SSW 15 | W 10 | ENE 11 | SSW 8 | SSW 14 | SSW 13 | E 13 | SSW 13 | E 12 | E 11 | SW 16 | SW 15 | SW 15 | SW 15 | NNE 9 | NE 9 | ENE 9 | SSW 15 | SW 12 |
672 | 696 | 552 | 650 | 137 | 269 | 257 | 156 | 129 | 101 | 93 | 261 | 229 | 226 | 242 | 49 | 75 | 46 | 84 | 38 | |
Swell 3 Height (m) Direction Period (s) | S 9 | SSW 15 | SSW 15 | W 9 | SSW 14 | E 13 | E 13 | SSW 13 | SSW 16 | SW 18 | SSW 12 | SSW 11 | NNE 8 | SW 8 | NNE 8 | SW 16 | ENE 9 | SW 15 | SW 12 | SW 15 |
181 | 581 | 474 | 235 | 356 | 168 | 166 | 176 | 181 | 154 | 75 | 43 | 32 | 18 | 45 | 124 | 48 | 107 | 37 | 54 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | SSW 14 | SSW 10 | — | — | — | — | SE 4 | ENE 7 | ENE 7 | ENE 7 | — | — | — | — | — | — | E 5 | ENE 9 | ENE 8 |
395 | 8841 | 1000 | — | — | — | — | 3 | 231 | 192 | 140 | — | — | — | — | — | — | 20 | 82 | 54 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 123 | 128 | 141 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 32 | 0 | 2 | 8 | 0 | 1 | 0 | 0 | 0 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Waikiki Surf forecast
The above surf forecast table for Waikiki provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waikiki can be found by selecting the local surf guide option on the grey menu. Our Waikiki 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 (Waikiki) 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 Waikiki 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.
Waikiki is 5 km (3 miles) from Honolulu. If you plan a vacation in Oahu, look for hotels and other accommodation in Honolulu. Honolulu has rooms for a wide range of budgets as well as car hire and transport links.










