Surf Forecasts:
Flies surf forecast from 14 Jul 2026:
- Best quality surf: Monday 20 Jul, 11AM (local time) - 5ft (1.5m), 8s period, S swell with offshore winds.
- Most powerful swell: Monday 20 Jul, 2PM (local time) - 5ft (1.6m), 8s period, S swell with 343 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 8PM (local time) - 4.5ft (1.3m), 6s 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 Wednesday (Jul 15) at 8PM. The primary swell is predicted to be 1.3m and 6s period with a secondary swell of 1.0m and 6s. Another secondary swell of 0.3m and 9s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Flies in the next 16 days are 1.6m 8s and forecast to arrive on Monday (Jul 20) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Friday (Jul 17) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 15th Jul) | 4.5ft (1.3m) 6s |
| Best Surf | 11AM (Mon 20th Jul) | 5ft (1.5m) 8s |
| Most Powerful | 2PM (Mon 20th Jul) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Flies over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s on offer for Flies.
It’s a slow start, I’m not gonna lie. For the first week and a bit, through to around the 20th of July, the surf is pretty ordinary. We’ve got small, weak, short-period swells (mostly 5-6 seconds) mixed with less-than-ideal winds. The water temp is 70°, which is about average for this time of year.
The first real glimmer of hope comes on Monday the 20th of July. That morning, the wind goes light offshore from the NW and we get a 5ft S swell with a period of 8 seconds – finally some proper groundswell energy. The combined energy reading is 295 (moderate), and with those clean conditions, this is the standout session of the whole outlook. The afternoon gets blown out by a strong 25 mph WSW cross-off, so aim for that early window.
After that, there’s a bit of a mix, but nothing to get too worked up about. A few sessions on the 21st and 22nd have swell around 4ft, but the winds are either onshore or too strong. It’s mostly a waiting game.
Then, towards the end of the month, we get another interesting one. On Saturday the 25th of July, the morning looks glassy with a 3ft SE swell. The period here is 11 seconds – a nice, long groundswell. Combined energy is 315 (moderate). This is a solid second option, but keep in mind that long-period swells like this can break a bit straight at a beach break like Flies. It’ll still be clean and fun for an intermediate surfer.
Honestly, the best call is Monday the 20th in the morning. Get on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 32°C on Wed afternoon, min 22°C on Tue morning). Winds decreasing (strong winds from the SW on Tue night, calm by Wed night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sat afternoon. Warm (max 28°C on Sun night, min 20°C on Sat afternoon). Wind will be generally light. | ||||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 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 5 | SW 5 | SW 7 | SSW 6 | SW 6 | SSW 6 | SSW 6 | SW 5 | SSW 6 | S 5 | S 5 | S 5 | S 5 | S 5 | SSE 5 | SSW 5 | SSW 6 | SSW 7 | S 8 | S 8 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 42 | 119 | 279 | 77 | 92 | 45 | 39 | 49 | 42 | 14 | 13 | 20 | 13 | 11 | 46 | 31 | 83 | 206 | 289 | 343 | 185 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-on | cross-off | cross | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | off |
High Tide | 8:22PM1.27m | 8:52AM1.04m | 9:14PM1.25m | 9:45AM1.06m | 10:04PM1.21m | 10:36AM1.06m | 10:54PM1.15m | 11:26AM1.05m | 11:43PM1.07m | 12:15PM1.03m | 00:32AM0.98m | 1:06PM1.00m | 1:23AM0.90m | ||||||||
Low Tide | 1:32PM-0.03m | 2:29AM-0.05m | 2:26PM-0.03m | 3:16AM-0.06m | 3:18PM-0.01m | 4:01AM-0.04m | 4:09PM0.03m | 4:45AM-0.01m | 4:59PM0.08m | 5:28AM0.04m | 5:51PM0.15m | 6:12AM0.09m | 6:45PM0.20m | ||||||||
 | |  | | |  |  | |  | | | | |  |  | | | | | | | |
 | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — |
 | — | 8:20 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — | — | 8:16 | — | — | 8:16 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 2 | — | — | — | — | — | — |
Temp °C | 23 | 26 | 26 | 28 | 32 | 31 | 27 | 30 | 29 | 22 | 25 | 24 | 24 | 21 | 23 | 24 | 26 | 28 | 24 | 27 | 25 |
Feels °C | 19 | 22 | 22 | 27 | 31 | 31 | 27 | 28 | 28 | 23 | 23 | 22 | 23 | 20 | 24 | 24 | 26 | 27 | 24 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SSW 6 | SE 9 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | S 5 | ESE 4 | S 5 | SE 8 | SE 8 | SSE 5 | SE 5 | ESE 5 | SSW 7 | S 8 | S 8 | S 8 |
| kJ | 13 | 13 | 13 | 77 | 12 | 45 | 39 | 37 | 42 | 14 | 3 | 20 | 3 | 3 | 46 | 6 | 2 | 206 | 289 | 260 | 185 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | — | SE 9 | SE 16 | ESE 9 | ESE 8 | SE 9 | SE 9 | ESE 4 | SE 8 | SE 8 | SE 14 | SE 13 | SE 13 | SE 8 | SE 13 | SE 12 | SE 12 | SE 12 | — |
| kJ | 1 | 1 | — | 12 | 11 | 7 | 7 | 3 | 3 | 5 | 3 | 3 | 7 | 7 | 7 | 3 | 6 | 6 | 6 | 5 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 17 | S 9 | SE 16 | SE 15 | SE 15 | SE 15 | SE 8 | SE 14 | SE 14 | — | — | E 8 | SE 13 | — | — | — | — | — |
| kJ | — | — | — | 6 | 2 | 11 | 9 | 9 | 9 | 3 | 8 | 8 | — | — | 1 | 7 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | SW 7 | — | SW 6 | NNW 2 | — | SW 5 | NNW 3 | E 4 | S 5 | — | S 5 | S 5 | SW 5 | SSW 5 | SSW 6 | — | — | S 8 | — |
| kJ | 42 | 119 | 279 | — | 92 | 1 | — | 49 | 1 | 8 | 13 | — | 13 | 11 | 25 | 31 | 83 | — | — | 343 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2516 | 144 | 270 | 57 | 21 | 0 | 4 | 1510 | 0 | 723 | 2551 | 32 | 715 | 371 | 36 | 140 | 138 | 18 | 0 | 80 | 18 |
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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