Surf Forecasts:
Nimitz Beach surf forecast from 21 Aug 2026:
- Best quality surf: Friday 21 Aug, 5PM (local time) - 2.5ft (0.8m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 4ft (1.2m), 17s period, S swell with 851 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 5PM (local time) - 2.5ft (0.8m), 16s period with SSW 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 Friday (Aug 21) at 5PM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 0.5m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Nimitz Beach in the next 16 days are 1.2m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. 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 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Fri 21st Aug) | 2.5ft (0.8m) 16s |
| Best Surf | 5PM (Fri 21st Aug) | 2.5ft (0.8m) 16s |
| Most Powerful | 11AM (Thu 27th Aug) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for Nimitz Beach over the next 16 days.
The Lowdown
Right then, Rusty here again, this time in feet and miles. Let's break it down.
We’re looking at a rough 16-day run. The only break on the radar is Nimitz Beach, and there’s a real gap of poor conditions before anything decent shows.
The first few days are a slog. On Friday the 21st, the morning brings a 3ft SSW swell with a long 17-second period, but the cross-on wind from the SSE at 6 mph muddies it up, giving us only marginal surf. Friday afternoon, though, goes glassy with a light WNW wind at 3 mph and that same 3ft groundswell. That’s a rare clean window, but the wave energy is moderate at 404, so not a big day. Water temp is a warm 81°, pretty standard for this time of year.
Then the trades hit. From Saturday the 22nd right through the end of August, it’s 18-25 mph cross-off ENE winds and poor surf. Some mornings show a small 3-4ft SSE swell, but it’s all fresh breeze and weak, with energy in the 700-1000 range. Not worth the hassle.
Now, Tuesday the 1st of September morning has a notable 8ft E swell with a 10-second period. That’s over 8ft, so experts only. The wave energy is a very strong 1852. But the cross-off wind from the NE at 22 mph keeps it marginal. The optimum swell direction is S, so this easterly swell won't line up perfectly on this exposed reef. A wildcard for the brave.
After that, from the 2nd to the 5th of September, it’s all small, choppy, and messy—waves under 3ft, energy dropping into the 300-500 range, and a lot of cross-on winds and rain. This whole stretch honestly looks better for kite surfing with those steady trades.
Your best bet for a clean, small session is that Friday afternoon on the 21st. For size, Tuesday the 1st of September morning has some muscle, but it’s not for everyone.
Hang in there.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 25°C on Sun night). Winds increasing (calm on Fri afternoon, fresh winds from the ENE by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Mon afternoon, min 25°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | SSW 17 | SSW 16 | SW 16 | SSW 16 | SSW 16 | E 7 | E 7 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | E 8 | SSW 16 | SSW 15 | S 18 | S 18 | S 19 | S 17 | S 16 | S 16 |
Wave Graph | |||||||||||||||||||||
368 | 326 | 367 | 326 | 314 | 269 | 239 | 191 | 186 | 166 | 156 | 140 | 173 | 196 | 167 | 235 | 395 | 351 | 851 | 521 | 582 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 12:12PM0.60m | 11:03PM0.23m | 1:02PM0.64m | 00:38AM0.25m | 1:42PM0.67m | 1:26AM0.28m | 2:15PM0.70m | 2:05AM0.31m | 2:45PM0.72m | 2:41AM0.35m | 3:13PM0.72m | 3:16AM0.40m | 3:40PM0.70m | 3:53AM0.45m | |||||||
Low Tide | 9:15PM0.23m | 9:01PM0.20m | 5:49AM0.13m | 9:11PM0.18m | 6:44AM0.10m | 9:26PM0.16m | 7:29AM0.08m | 9:43PM0.15m | 8:10AM0.07m | 10:00PM0.13m | 8:51AM0.08m | 10:18PM0.11m | |||||||||
6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 27 | 27 | 28 | 26 | 27 | 28 | 26 | 27 | 28 | 26 | 27 | 28 | 26 | 26 | 27 | 25 | 26 | 27 | 26 |
Feels °C | 29 | 30 | 31 | 25 | 26 | 25 | 24 | 25 | 24 | 25 | 26 | 25 | 26 | 26 | 25 | 23 | 24 | 23 | 24 | 24 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SW 16 | E 7 | SSW 16 | SW 16 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | E 7 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 |
368 | 326 | 367 | 97 | 314 | 245 | 232 | 191 | 186 | 166 | 156 | 92 | 117 | 196 | 167 | 215 | 395 | 351 | 851 | 521 | 582 | |
Swell 2 Height (m) Direction Period (s) | ENE 7 | W 10 | ENE 7 | SSW 16 | WNW 10 | S 14 | SSE 13 | SSE 13 | S 13 | E 8 | SSE 12 | SSW 13 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | E 18 | E 17 | E 15 |
40 | 49 | 45 | 326 | 85 | 106 | 137 | 99 | 86 | 35 | 48 | 140 | 146 | 81 | 81 | 235 | 135 | 137 | 98 | 195 | 290 | |
Swell 3 Height (m) Direction Period (s) | W 11 | E 8 | W 10 | W 10 | S 12 | WNW 10 | WNW 11 | WNW 11 | E 9 | S 12 | E 8 | SSE 12 | SSE 7 | SSE 7 | S 18 | NW 11 | NW 11 | SSW 16 | NW 10 | SSW 12 | WNW 9 |
82 | 29 | 50 | 74 | 47 | 60 | 68 | 48 | 39 | 77 | 22 | 47 | 17 | 17 | 167 | 18 | 18 | 87 | 16 | 79 | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | E 6 | ENE 7 | E 7 | E 7 | E 7 | E 7 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | E 8 | E 7 | ENE 7 | E 7 | E 7 | E 6 | E 6 | E 7 | E 7 |
— | — | 47 | 166 | 139 | 269 | 239 | 187 | 170 | 115 | 111 | 187 | 173 | 183 | 176 | 139 | 130 | 113 | 116 | 130 | 124 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 20 | 3 | 7 | 10 | 20 | 17 | 18 | 20 | 7 | 17 | 10 | 7 | 8 | 10 | 7 | 9 | 17 | 7 | 9 | 10 | 7 |
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.











