Surf Forecasts:
Flies surf forecast from 11 Aug 2026:
- Best quality surf: Monday 17 Aug, 11AM (local time) - 7ft (2.1m), 8s period, SSW swell with offshore winds.
- Most powerful swell: Monday 17 Aug, 11AM (local time) - 7ft (2.1m), 8s period, SSW swell with 487 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 11PM (local time) - 3ft (0.9m), 5s period with SW swell.
Best Forecast Surf Conditions for Flies this week:
The surf forecast for Flies over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 11PM. The primary swell is predicted to be 0.9m and 5s period with a secondary swell of 0.6m and 5s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Flies in the next 16 days are 2.1m 8s and forecast to arrive on Monday (Aug 17) at 11AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Aug 11) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 11th Aug) | 3ft (0.9m) 5s |
| Best Surf | 11AM (Mon 17th Aug) | 7ft (2.1m) 8s |
| Most Powerful | 11AM (Mon 17th Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Flies over the next 16 days.
The Lowdown
Alright, grab your board. Let’s have a look at what’s on offer for the next couple of weeks. We’re starting with a bit of a flat spell, so don't rush down just yet.
The first decent surf we see doesn’t show up until Saturday the 15th of August afternoon at Flies – a beach/jetty setup. It’s small, around 2 ft from the S with a short 7-second period, and while it's surfable the conditions feel a bit ordinary. Still, there’s a gentle offshore wind from the NW keeping it clean. Not a standout, but it’s the first sign of life. The water temp is about average for this time of year, nothing unusual to report there.
Now, the real standout is Monday the 17th of August. That morning, Flies (NE) wakes right up. We’ve got a solid 7 ft swell from the SSW with a moderate 8-second period and a clean offshore wind from the NW. The combined wave energy pumps in at 852 – that’s strong stuff, and it means good power. This is not for beginners; at over 5 ft it gets too big for the learner crew, and with that size pushing 8 ft it's expert territory only. Conditions are gonna be clean and lined up. That Monday morning is easily the best session in the whole window. The afternoon drops to 5 ft but stays clean, still a solid session.
After that, things go a bit sketchy for a few days – poor conditions, small swell, cross-onshore winds. Not worth paddling out.
But hold tight. On Saturday the 22nd of August afternoon, we get a bit of magic. Swell builds to 6 ft from the SSW, period only 6 seconds, but the wind goes glassy – absolutely dead calm from the NNE. That makes for clean, smooth conditions even if the wave period is short. Energy hits 220, so there’s enough push. That’s a great window for a sunset session if you’re patient.
And then again, Tuesday the 25th of August afternoon brings another glassy moment: 6 ft from the SSW, 6-second period, glassy wind from the WNW, energy of 267. Clean conditions again, good for a proper session if the tide behaves. This one has promise but it’s far out – still, worth keeping an eye on.
Overall, the clear winner is Monday the 17th of August morning at Flies – biggest, cleanest, most powerful. The glassy afternoons on the 22nd and 25th are also worth noting for those who want clean, punchy waves without the crowd rip. Crowds are possible at Flies at times, so get in early.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu morning. Warm (max 27°C on Mon night, min 22°C on Wed morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Warm (max 26°C on Fri afternoon, min 18°C on Sat morning). Winds decreasing (fresh winds from the NNW on Fri night, light winds from the W by Sun morning). | ||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 6 | S 6 | SSW 6 | SSW 5 | S 5 | SSW 5 | SSW 6 | SSW 5 | SSW 5 | SE 9 | S 5 | S 5 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 18 | 23 | 18 | 28 | 15 | 9 | 36 | 42 | 20 | 12 | 16 | 12 | 55 | 53 | 53 | 37 | 23 | 23 | 328 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross-off | off | off | off | cross-off | off | off | cross-off | cross | cross |
High Tide | 6:51AM0.99m | 7:14PM1.23m | 7:43AM1.05m | 8:05PM1.24m | 8:32AM1.10m | 8:53PM1.22m | 9:20AM1.12m | 9:40PM1.18m | 10:07AM1.12m | 10:26PM1.12m | 10:53AM1.11m | 11:12PM1.04m | |||||||
Low Tide | 00:34AM0.06m | 12:27PM0.04m | 1:27AM0.01m | 1:25PM0.01m | 2:12AM-0.02m | 2:16PM-0.01m | 2:53AM-0.03m | 3:03PM0.00m | 3:31AM-0.02m | 3:47PM0.03m | 4:08AM0.02m | 4:30PM0.08m | 4:45AM0.06m | ||||||
 |  |  |  | | | |  |  |  | | |  | | | | | | | |
 | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — |
 | 7:54 | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — |
mm | — | — | — | 1 | — | — | — | 3 | — | 2 | — | — | — | — | — | — | — | — | 2 |
Temp °C | 27 | 25 | 27 | 26 | 23 | 26 | 25 | 22 | 24 | 25 | 23 | 26 | 23 | 20 | 24 | 25 | 23 | 24 | 25 |
Feels °C | 26 | 25 | 28 | 26 | 22 | 24 | 23 | 20 | 24 | 24 | 17 | 20 | 16 | 14 | 21 | 22 | 21 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | ESE 9 | SSW 5 | S 5 | SSW 5 | ESE 8 | SSW 5 | SSW 5 | SSE 5 | S 5 | S 5 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 | — |
| kJ | 18 | 23 | 8 | 28 | 15 | 9 | 7 | 42 | 20 | 10 | 16 | 12 | 55 | 53 | 53 | 37 | 23 | 23 | — |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | — | ESE 9 | SE 8 | ESE 8 | SE 14 | ESE 8 | ESE 10 | SE 9 | ESE 9 | ESE 9 | — | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | — |
| kJ | 4 | 3 | — | 8 | 3 | 7 | 8 | 7 | 9 | 12 | 8 | 8 | — | 3 | 3 | 3 | 3 | 3 | — |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 12 | SE 11 | — | SE 11 | SE 10 | SE 8 | SE 13 | SE 13 | ENE 4 | — | NE 4 | NE 4 | — | — | — | — |
| kJ | 1 | 1 | 1 | 3 | 5 | — | 5 | 4 | 2 | 7 | 7 | 1 | — | 1 | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 6 | — | SSW 6 | — | — | — | SSW 6 | — | — | SSW 5 | NNE 3 | NNW 2 | NNW 3 | NNW 3 | — | — | — | — | S 6 |
| kJ | 18 | — | 18 | — | — | — | 36 | — | — | 9 | 5 | 1 | 3 | 1 | — | — | — | — | 328 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 715 | 842 | 2551 | 776 | 776 | 1147 | 771 | 2546 | 1647 | 801 | 685 | 776 | 0 | 71 | 0 | 4 | 723 | 1173 | 1164 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Flies Surf forecast
The above surf forecast table for Flies provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Flies can be found by selecting the local surf guide option on the grey menu. Our Flies 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 (Flies) 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 Flies 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.
Flies is 32 km (20 miles) from Mastic. If you plan a vacation in Long Island New York, look for hotels and other accommodation in Mastic. Mastic has rooms for a wide range of budgets as well as car hire and transport links.
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