
Surf Forecasts:
JT Flemming surf forecast from 16 Sep 2026:
- Most powerful swell: Tuesday 22 Sep, 8PM (local time) - 7ft (2.1m), 10s period, ENE swell with 855 kJ wave energy.
Best Forecast Surf Conditions for JT Flemming this week:
The most powerful waves expected at JT Flemming in the next 16 days are 2.1m 10s and forecast to arrive on Tuesday (Sep 22) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Sunday (Sep 20) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Tue 22nd Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for JT Flemming over the next 16 days.
The Lowdown
Alright, let’s get into it.
Look, the next couple of weeks are going to be a real battle for anyone looking for a wave. The swell is here, no doubt, but the wind is going to be the enemy for most of it. We are looking at a serious stretch of onshores and cross-shore slop.
We’ve got a mix of mid-period energy for most of this window, which is a bit of a letdown. For the next week and a half, we are dealing with mostly short-period swell in the 5 to 8-second range. That’s just choppy, disorganized stuff, and with a fresh cross-shore blowing almost every day, it’s going to be pretty ugly out there. The wave comment doesn't lie; it says "poor surf conditions" for the vast majority of this run.
The notable shift happens a fair way out. On the 25th of September, things start to change. The wind swings around to the southeast and goes more offshore for the first time in what feels like forever. We even get a "moderate offshore and clean" call that afternoon. There’s still some decent size in the water, 1.7m, but the period is still on the short side at 6 seconds. It’s a start, though. It’s a sign that things might be cleaning up. There’s a bit of a tease on the morning of the 26th with clean conditions too, but that’s followed by a "marginal" call for the afternoon.
And then it kind of falls apart again for the 27th with more cross-shore junk. But hold on. By the 29th of September, we get another window. The wind is more cross-off, and the period stretches up to 8 seconds. The energy level is kicking up, with the combined energy in the 400-500 range.
Honestly, for the entire 16-day outlook, there are maybe one or two small windows on the 25th and 26th of September that look like they could produce a clean one. The size is solid, but the short period will keep it from being classic anywhere except maybe a point like JT Flemming. We’ve got some water temp around average for this time of year, so that’s the one thing you don't have to worry about.
Everything else is a lot of work for a bad wave. If you’re desperate and the sandbanks are holding, maybe you can find something on the 25th, but we’re not calling it a green light. When the wind goes strong offshore at 45 to 55 km/h with that 2.0m+ swell, JT Flemming looks like it’s going to be a complete washing machine, not a surf spot. That’s the kind of conditions where the wave and wind are just fighting each other.
So, the long and short of it is: sit tight, watch the forecast, and maybe get your hopes up for the 29th.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Warm (max 27°C on Thu afternoon, min 25°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat morning, min 25°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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) | ENE 5 | ENE 5 | ENE 6 | NE 6 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | N 11 | ENE 8 | ENE 7 | ENE 9 | ENE 9 |
Wave Graph | |||||||||||||||||||
36 | 90 | 164 | 165 | 522 | 449 | 319 | 250 | 237 | 243 | 256 | 336 | 284 | 284 | 2 | 291 | 310 | 490 | 554 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 6:28AM0.66m | 3:17PM0.47m | 7:48AM0.63m | 9:50AM0.63m | 11:13AM0.66m | 11:58AM0.70m | 11:35PM0.35m | 12:29PM0.73m | 00:18AM0.41m | ||||||||||
Low Tide | 10:42PM0.14m | 1:04PM0.46m | 11:07PM0.17m | 11:38PM0.20m | 00:42AM0.24m | 3:13AM0.25m | 7:52PM0.30m | 4:46AM0.23m | 7:40PM0.28m | ||||||||||
— | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | |
6:29 | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | |
mm | 1 | — | — | 1 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 26 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 23 | 25 | 25 | 23 | 25 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 |
183 | 154 | 249 | 188 | 124 | 124 | 300 | 241 | 227 | 208 | 206 | 206 | 169 | 78 | 74 | 66 | 110 | 102 | 56 | |
Swell 2 Height (m) Direction Period (s) | NNE 8 | SSW 12 | SSW 11 | SSW 11 | SW 19 | SW 19 | W 10 | NW 11 | W 9 | W 9 | S 15 | S 15 | S 13 | SSW 15 | SW 15 | SW 15 | N 10 | W 11 | SW 14 |
22 | 14 | 12 | 12 | 59 | 93 | 2 | 5 | 2 | 2 | 4 | 4 | 3 | 72 | 76 | 35 | 2 | 2 | 31 | |
Swell 3 Height (m) Direction Period (s) | E 11 | N 9 | SW 8 | SW 8 | SW 11 | SW 10 | SW 10 | W 9 | NW 10 | NW 9 | W 9 | W 8 | W 8 | N 11 | N 11 | W 12 | W 12 | N 10 | W 11 |
36 | 7 | 3 | 3 | 5 | 4 | 4 | 2 | 4 | 3 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 2 | 2 | |
Wind waves Height (m) Direction Period (s) | ENE 5 | ENE 5 | ENE 6 | NE 6 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 6 | ENE 8 | ENE 7 | ENE 9 | ENE 9 |
36 | 90 | 164 | 165 | 522 | 449 | 319 | 250 | 237 | 243 | 256 | 336 | 284 | 284 | 199 | 291 | 310 | 490 | 554 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 5 | 12 | 12 | 12 | 12 | 12 | 12 | 15 | 136 | 12 | 14 | 12 | 12 | 15 | 14 | 12 | 14 | 12 | 15 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the JT Flemming Surf forecast
The above surf forecast table for JT Flemming provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at JT Flemming can be found by selecting the local surf guide option on the grey menu. Our JT Flemming 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 (JT Flemming) 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 JT Flemming 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.
JT Flemming is 21 km (13 miles) from Wailuku. If you plan a vacation in Maui, look for hotels and other accommodation in Wailuku. Wailuku has rooms for a wide range of budgets as well as car hire and transport links.










