Surf Forecasts:
Nimitz Beach surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8PM (local time) - 1.5ft (0.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 5AM (local time) - 3.5ft (1.0m), 14s period, S swell with 416 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 8PM (local time) - 1.5ft (0.5m), 16s period with SW swell.
Best Forecast Surf Conditions for Nimitz Beach this week:
The surf forecast for Nimitz Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 8PM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.7m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nimitz Beach in the next 16 days are 1.0m 14s and forecast to arrive on Monday (Aug 17) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Sunday (Aug 23) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 19th Aug) | 1.5ft (0.5m) 16s |
| Best Surf | 8PM (Wed 19th Aug) | 1.5ft (0.5m) 16s |
| Most Powerful | 5AM (Mon 17th Aug) | 3.5ft (1.0m) 14s |
Table - best surf conditions forecast for Nimitz Beach over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’m not gonna sugarcoat it – the next 16 days are a mixed bag. We’ve got a long dry spell starting off, with not much to get excited about until the later part of the window. The water temp is about average for the time of year, so no surprises there.
The only break on offer is Nimitz Beach, a reef setup that’s inconsistent and best for beginners. Kicking off Monday, August 17th, we’ve got small S swell around 3 ft, but it’s pretty marginal with a cross-off wind. The combined energy is weak (594), and honestly, it’s not worth paddling out for. Tuesday and Wednesday are even worse, with poor surf and tiny waves. The wind stays moderate, but the swell drops off to nothing.
We then hit a real flat spell from Thursday, August 20th through to Saturday, August 22nd morning – knee-high slop at best, with cross-on winds making it messy. The combined energy is in the low 400s, which is weak. But then Saturday afternoon (August 22nd) is the first real highlight of the outlook. The wind eases to a gentle cross-off breeze, and the swell lifts to 2 ft from the SW at 16 seconds. That’s a long-period groundswell, so the waves will have some shape and energy, with clean conditions. The combined energy is 368 – still moderate, but it’s the best we’ve seen. This is the standout for the first week, but keep in mind the break is inconsistent, so you might have to wait for sets.
Sunday, August 23rd, is a write-off – short-period E swell at 4 ft with a cross-chop and poor surf. Monday, August 24th, is marginal again with small SSW swell.
Now, here’s where it gets interesting. From Tuesday, August 25th, we see a pulse of easterly swell building. Tuesday morning hits 6 ft from the E with a short 8-second period and moderate cross-off wind. The combined energy is 724 (moderate), but it’s a bit short-period and choppy. Wednesday, August 26th, is where the real standout of the entire forecast sits. Wednesday morning has 7 ft from the E at 8 seconds, but the combined energy jumps to 1093 (strong) – that’s proper grunt. The wind is cross-off at 30 km/h, keeping it clean.<|image|>. This is a big, powerful swell, and it’s gonna be too much for beginners. Only experts should be out there. The short period means it’ll be a bit crumbly, but the energy is undeniable. Wednesday afternoon sees a shift to S swell at 4 ft with a 12-second period and combined energy of 1116, still strong.
Thursday, August 27th, keeps the big swell rolling with 8 ft from the E at 8 seconds in the morning, combined energy at 1553 (very strong), but a cross-shore wind adds some chop. The afternoon eases a bit to 8 ft with cleaner cross-off wind. That’s a solid day for experts only.
After that, the swell fades fast. Friday, August 28th, through to Monday, September 1st, we’re back to small, poor surf with combined energy mostly under 500. The wind stays moderate to fresh cross-off, but there’s just not enough swell to get excited about. Tuesday, September 1st, does show a pulse of 7 ft from the E at 10 seconds with cross-off wind and combined energy at 923 (moderate), but it’s a long way out, so treat that as a promising maybe.
So, to sum it up: the best bet is Saturday afternoon, August 22nd, for a clean, long-period SW swell, and then Wednesday, August 26th, for a big, powerful E swell for experts. The rest is mostly flat or marginal.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun night. Warm (max 27°C on Mon afternoon, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Sat afternoon, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | SW 16 | SW 16 | SSW 16 | SW 18 | SW 17 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||
315 | 412 | 329 | 222 | 215 | 123 | 114 | 129 | 125 | 175 | 316 | 305 | 347 | 368 | 326 | 322 | 326 | 251 | 245 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-off | cross-off |
High Tide | 7:23AM0.54m | 6:10PM0.44m | 8:25AM0.55m | 6:13PM0.37m | 9:42AM0.56m | 11:04AM0.57m | 12:12PM0.60m | 11:03PM0.23m | 1:02PM0.64m | 00:38AM0.25m | |||||||||
Low Tide | 00:28AM0.10m | 1:18PM0.31m | 00:54AM0.11m | 2:59PM0.34m | 1:23AM0.13m | 2:04AM0.14m | 3:11AM0.15m | 9:15PM0.23m | 9:01PM0.20m | ||||||||||
— | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
7:00 | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:58 | — | — | 6:57 | — | |
mm | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 27 |
Feels °C | 27 | 26 | 27 | 25 | 24 | 25 | 24 | 26 | 27 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 31 | 28 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | E 8 | S 14 | S 13 | E 7 | E 7 | S 13 | E 8 | E 8 | E 8 | E 8 | E 8 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | E 7 | SW 16 |
235 | 149 | 329 | 222 | 77 | 79 | 114 | 86 | 84 | 64 | 57 | 55 | 347 | 368 | 326 | 322 | 326 | 70 | 245 | |
Swell 2 Height (m) Direction Period (s) | SSE 7 | S 14 | SSE 6 | WSW 6 | S 13 | S 13 | SW 18 | SW 16 | SW 16 | SSW 16 | SW 18 | SW 17 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | E 6 | SW 16 | SSE 12 |
108 | 412 | 12 | 8 | 215 | 119 | 79 | 129 | 125 | 175 | 316 | 305 | 44 | 44 | 18 | 41 | 35 | 251 | 50 | |
Swell 3 Height (m) Direction Period (s) | S 14 | S 6 | SSW 5 | WNW 11 | SSW 17 | SSW 18 | WNW 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | SE 8 | S 13 | S 14 | S 12 | SE 8 |
315 | 33 | 11 | 24 | 115 | 123 | 48 | 44 | 45 | 45 | 40 | 40 | 38 | 37 | 18 | 54 | 107 | 47 | 18 | |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | E 8 | E 7 | — | ENE 7 | E 8 | — | NNE 6 | — | — | — | — | — | — | — | ENE 6 | — | E 7 |
— | 250 | 138 | 112 | — | 147 | 131 | — | 26 | — | — | — | — | — | — | — | 75 | — | 114 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 18 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 3 | 7 | 7 | 3 | 7 | 7 | 3 | 7 | 3 | 3 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Nimitz Beach Surf forecast
The above surf forecast table for Nimitz Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nimitz Beach can be found by selecting the local surf guide option on the grey menu. Our Nimitz 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 (Nimitz 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 Nimitz 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.
Nimitz Beach is 5 km (3 miles) from Makakilo City. If you plan a vacation in Oahu, look for hotels and other accommodation in Makakilo City. Makakilo City has rooms for a wide range of budgets as well as car hire and transport links.











