Surf Forecasts:
Flies surf forecast from 16 Aug 2026:
- Best quality surf: Monday 17 Aug, 2PM (local time) - 4ft (1.2m), 6s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 18 Aug, 8AM (local time) - 3.5ft (1.0m), 7s period, SSE swell with 105 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 2PM (local time) - 4ft (1.2m), 6s period with S 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 Monday (Aug 17) at 2PM. The primary swell is predicted to be 1.2m and 6s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Flies in the next 16 days are 1.0m 7s and forecast to arrive on Tuesday (Aug 18) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 8s period and expected on Saturday (Aug 22) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Mon 17th Aug) | 4ft (1.2m) 6s |
| Best Surf | 2PM (Mon 17th Aug) | 4ft (1.2m) 6s |
| Most Powerful | 8AM (Tue 18th Aug) | 3.5ft (1.0m) 7s |
Table - best surf conditions forecast for Flies over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming down the line for the next two weeks or so.
Honestly, mate, I gotta be straight with you – this is a quiet run. The next week and a half is mostly a write-off, with tiny waves and funky winds. We’ve got a long gap with practically nothing worth paddling out for. The first real glimmer of hope doesn’t show up until the tail end of the month.
The only break on the cards is Flies, a beach/jetty spot that’s fairly consistent, exposed to the SW. The water temp is sittin’ at 76°, which is a touch warmer than normal for this time of year – you might notice that little bit of extra warmth if you get in.
Sunday the 16th through Wednesday the 26th – this is the quiet patch. Swells are tiny, mostly below 2 ft, with weak energy (9 to 102), and short periods around 5 to 7 seconds. Winds are all over the place – mostly cross-on or cross-off, keeping the surface messy. There’s a sniff of something on Tuesday the 18th morning, with a little 3 ft SSE swell and clean conditions on a cross-off NNE breeze, but the energy is only moderate (100) and the wave comment says it’s still “very ordinary”. Not one you’d rush for.
Then we enter a proper flat spell. From Wednesday the 19th right through to Tuesday the 25th, it’s tiny – 0.3 ft to 2 ft, energy anywhere from 3 to 45, and just poor surf conditions nearly every session. A few clean windows on the 20th and 24th with offshore winds, but the swell just isn’t there to back it up.
Now, here’s the one that caught my eye. On Wednesday the 26th of August in the afternoon, things finally wake up. We get a moderate energy swell (201) from the SE, 2 ft at a very long 14-second period. This is proper groundswell energy. The wind is light WSW at 3 mph, swinging cross-off, making for clean conditions. The wave comment says “expect good surf conditions”. At Flies, with that long-period SE swell and clean glass, this could actually line up nice on the sandbanks. It’s not big, but it’s the standout of the whole 16-day window. Keep an eye on the 26th afternoon – that’s your session.
After that, Thursday the 27th and Friday the 28th have a bit more energy (221 to 228 and 137 to 149), but winds turn cross or strong offshore, making it choppy or hard to paddle into. The 30th of August morning has a clean 3 ft SE swell at 10 seconds (132 energy), but again, it’s just “ordinary”. The only true standout remains that Wednesday afternoon.
Get ready for a lot of flat days, then aim for the 26th afternoon. That’s the one.
- Rusty
Short Range ForecastModerate rain (total 13mm), heaviest on Mon morning. Warm (max 25°C on Mon afternoon, min 20°C on Sun night). Winds decreasing (fresh winds from the SSW on Sun night, calm by Tue afternoon). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu morning. Warm (max 26°C on Wed afternoon, min 18°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | S 6 | S 6 | SSW 5 | S 6 | S 6 | SSE 8 | SSE 7 | SE 8 | SE 7 | SE 7 | SE 7 | SE 9 | S 5 | SSW 5 | SE 9 | S 5 | SSE 5 | S 6 | S 6 | S 6 | S 7 |
Wave Graph | |||||||||||||||||||||
7 | 17 | 49 | 89 | 83 | 72 | 86 | 40 | 54 | 33 | 29 | 39 | 12 | 8 | 26 | 4 | 9 | 6 | 7 | 3 | 14 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-on | cross | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross | on | on | cross-on | cross-on | cross |
High Tide | 10:53AM1.11m | 11:12PM1.04m | 11:39AM1.07m | 11:58PM0.96m | 12:27PM1.02m | 00:46AM0.87m | 1:17PM0.98m | 1:39AM0.80m | 2:13PM0.94m | 2:38AM0.76m | 3:12PM0.92m | 3:41AM0.74m | 4:11PM0.94m | 4:40AM0.76m | |||||||
Low Tide | 4:30PM0.08m | 4:45AM0.06m | 5:14PM0.15m | 5:24AM0.12m | 6:01PM0.21m | 6:06AM0.17m | 6:52PM0.27m | 6:53AM0.22m | 7:48PM0.31m | 7:44AM0.26m | 8:52PM0.33m | 8:39AM0.28m | 10:06PM0.32m | ||||||||
6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | — | 7:40 | — | — | 7:39 | — | — | 7:37 | — | |
mm | — | — | 3 | 10 | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | — | 3 | — |
Temp °C | 22 | 24 | 24 | 23 | 25 | 23 | 23 | 25 | 24 | 25 | 26 | 25 | 21 | 22 | 23 | 19 | 21 | 21 | 22 | 19 | 19 |
Feels °C | 22 | 21 | 21 | 24 | 28 | 25 | 26 | 26 | 25 | 25 | 25 | 24 | 22 | 24 | 24 | 17 | 20 | 20 | 21 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | S 6 | SE 8 | SE 8 | SE 8 | S 6 | SSE 8 | SSE 7 | S 7 | SE 7 | SE 7 | SE 7 | SE 9 | S 5 | ESE 9 | SE 9 | SE 8 | SSE 5 | ESE 8 | ESE 8 | ESE 8 | ESE 7 |
7 | 11 | 11 | 11 | 83 | 72 | 86 | 33 | 54 | 33 | 29 | 39 | 12 | 30 | 26 | 18 | 9 | 26 | 34 | 22 | 30 | |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 6 | — | S 9 | S 9 | SSW 6 | SE 13 | SE 8 | SSW 6 | SSW 6 | SSW 6 | SSE 6 | ESE 9 | SSW 5 | SSW 5 | S 5 | SE 9 | SSE 5 | S 6 | E 3 | S 7 |
7 | 1 | — | 2 | 2 | 32 | 7 | 40 | 12 | 12 | 7 | 3 | 30 | 8 | 2 | 4 | 19 | 3 | 6 | 2 | 14 | |
Swell 3 Height (m) Direction Period (s) | SE 6 | — | — | — | S 9 | — | SE 13 | SE 12 | SSE 11 | SE 10 | SE 9 | SSW 6 | WSW 4 | — | E 7 | SSE 6 | E 7 | S 6 | SE 13 | S 6 | SE 9 |
2 | — | — | — | 2 | — | 7 | 6 | 12 | 15 | 14 | 3 | 8 | — | 1 | 3 | 4 | 6 | 7 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | — | S 6 | SSW 5 | S 6 | — | — | — | — | — | — | SSW 2 | SSW 4 | — | — | — | NE 3 | — | — | ENE 3 | — | — |
— | 17 | 49 | 89 | — | — | — | — | — | — | 1 | 8 | — | — | — | 1 | — | — | 1 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1470 | 1173 | 2342 | 21 | 4 | 0 | 0 | 56 | 57 | 97 | 628 | 0 | 4 | 1642 | 673 | 723 | 848 | 260 | 260 | 108 | 4 |
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.











