
Surf Forecasts:
Tennis Courts surf forecast from 14 Sep 2026:
- Best quality surf: Friday 18 Sep, 11PM (local time) - 3.5ft (1.0m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 2PM (local time) - 7ft (2.1m), 10s period, ENE swell with 799 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 11PM (local time) - 3.5ft (1.0m), 16s period with SSW swell.
Best Forecast Surf Conditions for Tennis Courts this week:
The surf forecast for Tennis Courts over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 11PM. The primary swell is predicted to be 1.0m and 16s period with a secondary swell of 0.4m and 6s. Another secondary swell of 1.8m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tennis Courts in the next 16 days are 2.1m 10s and forecast to arrive on Thursday (Sep 17) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Sep 16) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 18th Sep) | 3.5ft (1.0m) 16s |
| Best Surf | 11PM (Fri 18th Sep) | 3.5ft (1.0m) 16s |
| Most Powerful | 2PM (Thu 17th Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Tennis Courts over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the table for this stretch.
Straight up, we’ve got a bit of a flat spell to start. The first proper surf recommendation isn’t until Monday the 14th of September, and even then it’s a tough call. The pattern is a long, drawn-out run of marginal surf with clean conditions but poor wave quality. There’s a gap of several days with no real recommendations from the 14th right through until the 23rd, where we get a small window of something a bit bigger. The true standout window doesn’t arrive until the very end of the forecast, around the 26th of September and beyond.
For Tennis Courts, the wave energy is weak at first. Monday the 14th sees a combined swell energy of only 135, with a tiny 1ft to 2ft SW swell. Wind is cross-off from the ENE, so the surface is clean, but there’s just not enough push. The water temp is 81°, which is about average for this time of year. This marginal theme continues through the week. By Wednesday the 16th, the energy climbs to 827, then 1016 on the afternoon, with a 3ft SSW swell, but the wind is a fresh 19 mph cross-off. Not great.
Thursday the 17th sees a jump to 7ft, but it’s a short-period ENE windswell of 9-10 seconds, with a strong cross-off breeze. Combined energy is up around 1188, but the quality is still marginal. This run of bigger but messy swell continues through the weekend. Saturday the 19th has 6ft ENE swell with an 8-second period and a cross wind that’s going to chop it up. This is not the good stuff.
The real interest, and the one true standout, lands on the final weekend. Saturday the 26th of September morning, the wind goes glassy out of the SE at 3 mph. The swell is a clean 3ft from the SSW with a 15-second period. That’s proper groundswell energy (combined energy 492). The wave comment says “expect good surf conditions.” The afternoon gets even better – 3ft SSW swell, 14-second period, and absolutely glassy with zero wind. Combined energy is 504, and the comment says “expect very good surf conditions.” This is the pick of the whole period. The long period (over 15 seconds) means it will hold up best at the reef, giving long, clean lines.
Sunday the 27th holds similar 3ft SSW swell, with glassy conditions in the morning and light offshore wind in the afternoon. By Monday the 28th of September, we’re looking at 3ft to 4ft SW swell, glassy, with combined energy hitting 736 in the afternoon. Expect very good surf conditions. Tuesday the 29th continues the glassy, clean theme with 3ft SSW to SW swell. This whole last week is the time to be in the water.
This spot is a reef break, advanced only, and it’s fairly consistent but can be a bit fickle. The crowds are listed as “sometimes,” so you might have some company on the good days.
Signing off, Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Tue afternoon, min 25°C on Mon morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Thu night. Warm (max 28°C on Fri afternoon, min 26°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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) | SW 23 | SW 22 | SW 21 | SW 20 | SW 19 | SSW 19 | SW 18 | SSW 18 | SW 17 | ENE 10 | ENE 9 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | ENE 8 | E 7 | ENE 8 | ENE 7 |
Wave Graph | |||||||||||||||||||||
86 | 227 | 224 | 392 | 384 | 470 | 455 | 541 | 429 | 763 | 630 | 644 | 622 | 580 | 539 | 392 | 402 | 427 | 411 | 345 | 365 | |
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-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:40PM0.36m | 7:02AM0.58m | 6:07PM0.30m | 7:59AM0.57m | 6:32PM0.25m | 9:10AM0.56m | 7:25PM0.21m | 10:27AM0.57m | 11:01PM0.21m | 11:34AM0.59m | 00:19AM0.23m | 12:26PM0.61m | 00:59AM0.27m | ||||||||
Low Tide | 12:45PM0.20m | 11:42PM0.08m | 2:03PM0.23m | 00:07AM0.11m | 4:06PM0.24m | 00:38AM0.13m | 7:14PM0.21m | 1:26AM0.16m | 7:23PM0.18m | 2:56AM0.18m | 7:43PM0.16m | 4:35AM0.17m | 8:01PM0.15m | ||||||||
6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
— | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 5 | — | — | 3 | — | — | — | — | — | — |
Temp °C | 26 | 27 | 26 | 27 | 28 | 26 | 27 | 28 | 26 | 27 | 27 | 26 | 27 | 28 | 26 | 27 | 27 | 26 | 26 | 27 | 26 |
Feels °C | 25 | 26 | 27 | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 26 | 26 | 25 | 26 | 27 | 27 | 25 | 25 | 24 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | NE 8 | SW 22 | NE 8 | SW 20 | SW 19 | SSW 19 | SW 18 | SSW 18 | SW 17 | SW 16 | SW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 15 | SSW 15 | SSW 14 |
58 | 227 | 31 | 392 | 384 | 470 | 455 | 541 | 429 | 258 | 258 | 644 | 622 | 580 | 539 | 382 | 387 | 350 | 233 | 296 | 276 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 21 | NNE 8 | E 12 | E 11 | SW 12 | SW 11 | E 10 | SSW 20 | SSW 19 | SSE 10 | SSE 10 | SSE 7 | SSE 6 | SSW 18 | SSE 6 | SW 16 | SSW 15 | SW 15 | SW 15 |
49 | 49 | 224 | 24 | 68 | 58 | 35 | 43 | 96 | 149 | 210 | 9 | 9 | 18 | 7 | 108 | 16 | 121 | 146 | 104 | 33 | |
Swell 3 Height (m) Direction Period (s) | SW 23 | SSW 11 | SSW 13 | E 12 | SW 12 | SW 12 | S 9 | S 8 | SSW 11 | SW 11 | SSE 10 | WSW 10 | W 9 | W 9 | S 20 | SSE 7 | S 18 | SSW 14 | SSE 7 | W 13 | W 12 |
86 | 12 | 68 | 46 | 38 | 38 | 6 | 5 | 12 | 18 | 10 | 9 | 7 | 6 | 67 | 15 | 99 | 37 | 5 | 13 | 12 | |
Wind waves Height (m) Direction Period (s) | NE 5 | NE 8 | NE 5 | ENE 6 | NE 8 | ENE 5 | ENE 10 | ENE 10 | ENE 6 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 7 | ENE 8 | ENE 7 |
23 | 149 | 41 | 53 | 96 | 75 | 331 | 427 | 185 | 763 | 630 | 534 | 427 | 438 | 427 | 392 | 402 | 427 | 411 | 345 | 365 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 3 | 0 | 0 | 28 | 128 | 28 | 28 | 29 | 0 | 29 | 28 | 0 | 42 | 36 | 28 | 30 | 36 | 28 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Tennis Courts Surf forecast
The above surf forecast table for Tennis Courts provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tennis Courts can be found by selecting the local surf guide option on the grey menu. Our Tennis Courts 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 (Tennis Courts) 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 Tennis Courts 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.
Tennis Courts is 4 km (2 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.










