Surf Forecasts:
Nimitz Beach surf forecast from 15 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 5PM (local time) - 1.5ft (0.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 2AM (local time) - 16ft (5.0m), 11s period, E swell with 5,528 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 5PM (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 5PM. The primary swell is predicted to be 0.5m and 16s 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 Nimitz Beach in the next 16 days are 5.0m 11s and forecast to arrive on Sunday (Aug 16) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 9s period and expected on Saturday (Aug 15) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 19th Aug) | 1.5ft (0.5m) 16s |
| Best Surf | 5PM (Wed 19th Aug) | 1.5ft (0.5m) 16s |
| Most Powerful | 2AM (Sun 16th Aug) | 16ft (5.0m) 11s |
Table - best surf conditions forecast for Nimitz Beach over the next 16 days.
The Lowdown
Howdy, Rusty here again. Let’s talk about Nimitz Beach in real units.
This forecast is a long, quiet slog with one big, clear winner right at the end. For the first couple of weeks, from now up until the 26th, it’s mostly a wash-out. Small, weak swells and breezy winds keep the quality real low. The water temp is about normal for the time of year.
Starting off, there’s nothing to write home about. The 14th through the 17th have bigger swells—up to 3 feet—but the wind is cranking over 28 mph, making a total mess of things. After that, it drops way down. You get tiny SW groundswell, with heights barely reaching 3 feet and the energy is weak. The wave period is long (13-16 seconds), which is good for shape, but without any size, it’s just a lot of waiting for a bump. Some days like Thursday the 20th afternoon have light winds and clean faces, but with waves only 2 feet and low energy, it’s a loggers-only kind of day.
So, here’s the one that matters. The clear standout is Thursday afternoon, August 27th. Swell comes up to 4 feet from the East with a 17-second period. That’s a powerful groundswell delivering serious juice (energy hitting 1392). And the kicker? The wind is flat calm. Glassy. Absolute perfection for a reef. It’s going to be steep, clean, and has some punch, so it’s for the more experienced crew. That is your one shot at something truly special in this entire window. The morning of the 28th will still have some decent waves but with a little more wind on it.
After that, it fades again into smaller, weaker 3 feet surf with messy cross-shore winds. Don’t sleep on that Thursday arvo.
Rusty, signing off.
Short Range ForecastHeavy rain (total 40mm), heaviest during Sat night. Warm (max 27°C on Sat morning, min 25°C on Fri night). Winds decreasing (gales from the ENE on Sat night, light winds from the E by Sun night). | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Mon night). Winds decreasing (fresh winds from the E on Tue morning, light winds from the ENE by Thu afternoon). | ||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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) | E 8 | E 9 | E 10 | E 11 | SSE 9 | SSE 8 | 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 |
Wave Graph  | |||||||||||||||||||
 kJ | 650 | 1672 | 2662 | 5528 | 812 | 654 | 315 | 412 | 329 | 222 | 219 | 123 | 114 | 129 | 125 | 175 | 316 | 305 | 347 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 5:41AM0.50m | 5:29PM0.60m | 6:30AM0.53m | 5:53PM0.51m | 7:23AM0.54m | 6:10PM0.44m | 8:25AM0.55m | 6:13PM0.37m | 9:42AM0.56m | 11:04AM0.57m | |||||||||
Low Tide | 11:40PM0.09m | 11:19AM0.18m | 00:04AM0.09m | 12:13PM0.25m | 00:28AM0.10m | 1:18PM0.31m | 00:54AM0.11m | 2:59PM0.34m | 1:23AM0.13m | 2:04AM0.14m | 3:11AM0.15m | ||||||||
 |  |  |  |  | | | | | | | | | | | | | |  | |
 | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 7:02 | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — |
mm | — | — | — | 19 | 12 | 8 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 26 | 27 | 28 | 26 |
Feels °C | 25 | 23 | 22 | 21 | 22 | 26 | 27 | 26 | 28 | 25 | 23 | 25 | 24 | 26 | 27 | 27 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 13 | S 14 | SSE 9 | SSE 8 | E 8 | E 8 | S 14 | S 13 | S 13 | S 13 | S 13 | E 8 | E 8 | E 8 | E 8 | SW 17 | ENE 8 |
| kJ | 306 | 280 | 168 | 184 | 812 | 366 | 264 | 196 | 329 | 222 | 219 | 119 | 114 | 108 | 84 | 82 | 74 | 305 | 94 |
Swell 2 Height (m) Direction Period (s) | W 11 | W 11 | WNW 13 | S 18 | S 13 | E 9 | S 7 | S 14 | S 6 | SW 5 | SSW 17 | SSE 8 | SSE 7 | SW 16 | SW 16 | SSW 16 | SW 18 | SSW 8 | SSW 16 |
| kJ | 21 | 22 | 34 | 101 | 121 | 452 | 138 | 412 | 32 | 7 | 115 | 22 | 18 | 129 | 125 | 175 | 316 | 11 | 347 |
Swell 3 Height (m) Direction Period (s) | SSW 17 | SW 17 | S 19 | WNW 13 | S 16 | S 10 | S 14 | S 6 | WNW 11 | WNW 11 | SW 7 | SSW 18 | SW 18 | S 12 | S 12 | S 12 | S 11 | SSE 9 | S 11 |
| kJ | 29 | 12 | 64 | 33 | 192 | 98 | 315 | 64 | 24 | 24 | 11 | 123 | 79 | 69 | 45 | 45 | 39 | 8 | 22 |
Wind waves Height (m) Direction Period (s) | E 8 | E 9 | E 10 | E 11 | E 9 | SSE 8 | — | ENE 8 | E 7 | E 7 | ENE 7 | E 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | NE 6 | E 8 | ENE 7 |
| kJ | 650 | 1672 | 2662 | 5528 | 664 | 654 | — | 300 | 134 | 127 | 79 | 79 | 109 | 64 | 53 | 54 | 43 | 72 | 84 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 177 | 177 | 177 | 186 | 33 | 33 | 8 | 8 | 7 | 7 | 8 | 7 | 7 | 7 | 3 | 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.
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