Surf Forecasts:
Flies surf forecast from 18 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 8AM (local time) - 10ft (3.0m), 9s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 22 Jul, 8AM (local time) - 10ft (3.0m), 9s period, S swell with 1,621 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 2PM (local time) - 3.5ft (1.1m), 7s 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 Sunday (Jul 19) at 2PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.1m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Flies in the next 16 days are 3.0m 9s and forecast to arrive on Wednesday (Jul 22) 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 1.1m 6s period and expected on Saturday (Jul 18) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sun 19th Jul) | 3.5ft (1.1m) 7s |
| Best Surf | 8AM (Wed 22nd Jul) | 10ft (3.0m) 9s |
| Most Powerful | 8AM (Wed 22nd Jul) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Flies over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s happening at Flies over the next couple of weeks.
Straight up, it’s a tough run. We’ve got a long stretch of pretty ordinary conditions ahead, with only a few moments that might get you out of the water. The first decent look doesn’t roll in until Sunday morning, the 19th of July. That’s a few days of waiting.
The first few days are a write-off. Saturday the 18th is all onshore wind and messy, small surf – not worth paddling for. Then Sunday the 19th finally shows a bit of life. We get a clean, offshore breeze from the NW, with a 4ft SSW swell, period around 7 seconds. It’s not big, but the wave energy is moderate, and the wind is clean. That morning session is the best of the first week, but the waves are still pretty ordinary. The afternoon holds up too, with a 4ft S swell and clean offshore wind.
Monday the 20th is small and clean in the morning with a 3ft S swell, but the energy is weak. It’s surfable, but nothing to write home about.
Then we hit a real gap. From Tuesday the 21st through to the end of the month, the wind is mostly onshore or cross-shore, and the swell is small or messy. The only standout is Wednesday the 22nd of July, when the swell jumps up to 8ft from the south, with a 9-second period. That’s a lot of energy – a strong, powerful swell. But it’s a double-edged sword: the wind is cross-offshore in the morning, which keeps it clean, but the swell is big enough that it’s only for experienced surfers. The afternoon gets a bit cross-shore and choppy. For experts, the morning of the 22nd is the best on offer in the whole outlook.
After that, it drops off fast. By Thursday the 23rd, it’s down to 5ft and the wind is okay, but the energy is dropping. By the end of the month, it’s tiny and onshore again.
The water temperature is around 72°, which is about average for the time of year here.
So, to sum it up: Sunday the 19th morning is your clean, small option for a fun session. Wednesday the 22nd morning is the big one – powerful, clean, but only for the crew who can handle it. After that, it’s a long wait with very little on offer. Even the start of August looks quiet.
Rusty out.
Short Range ForecastHeavy rain (total 26mm), heaviest during Sat night. Warm (max 26°C on Sun afternoon, min 19°C on Mon morning). Winds decreasing (strong winds from the SW on Sat night, light winds from the NNE by Mon morning). | Days 4-6 Weather SummaryHeavy rain (total 39mm), heaviest during Tue night. Warm (max 27°C on Wed night, min 19°C on Wed night). Winds decreasing (strong winds from the SSW on Tue night, calm by Thu afternoon). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | SSW 4 | SSW 4 | S 6 | SSW 7 | S 7 | S 7 | S 8 | S 8 | S 7 | SSE 7 | SSE 5 | S 6 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | SE 8 | SE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 32 | 94 | 160 | 134 | 88 | 95 | 74 | 68 | 84 | 74 | 119 | 1291 | 971 | 601 | 402 | 199 | 113 | 103 | 78 | 75 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | off | off | cross-off | cross-off | cross-on | cross-on | on | on | cross-on | cross-off | cross | cross-off | cross-off | on | cross-off | cross | on | glassy |
High Tide | 11:26AM1.05m | 11:43PM1.07m | 12:15PM1.03m | 00:32AM0.98m | 1:06PM1.00m | 1:23AM0.90m | 2:00PM0.97m | 2:18AM0.83m | 2:55PM0.95m | 3:16AM0.78m | 3:51PM0.95m | 4:14AM0.76m | 4:45PM0.97m | ||||||||
Low Tide | 4:59PM0.08m | 5:28AM0.04m | 5:51PM0.15m | 6:12AM0.09m | 6:45PM0.20m | 6:56AM0.14m | 7:43PM0.25m | 7:42AM0.19m | 8:45PM0.29m | 8:30AM0.22m | 9:55PM0.30m | 9:20AM0.23m | 11:10PM0.28m | ||||||||
 |  |  |  | |  | | |  |  | | | | | | | | | | | | |
 | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — |
 | — | 8:17 | — | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — |
mm | — | 4 | 22 | — | — | — | — | — | — | — | — | 38 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 24 | 22 | 23 | 21 | 26 | 25 | 21 | 22 | 22 | 22 | 23 | 23 | 23 | 25 | 27 | 20 | 22 | 21 | 21 | 22 | 22 |
Feels °C | 22 | 20 | 23 | 19 | 22 | 21 | 20 | 21 | 21 | 20 | 22 | 22 | 21 | 24 | 27 | 17 | 21 | 20 | 19 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 13 | SSW 7 | S 7 | S 7 | S 8 | S 8 | S 7 | SE 8 | SE 8 | SE 11 | — | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | SE 8 | SE 8 |
| kJ | 3 | 3 | 7 | 160 | 134 | 88 | 95 | 74 | 68 | 3 | 2 | 5 | — | 971 | 601 | 402 | 199 | 113 | 103 | 78 | 75 |
Swell 2 Height (m) Direction Period (s) | SE 14 | SE 13 | E 8 | SE 13 | SE 13 | SE 12 | SE 12 | — | SE 8 | SE 12 | SE 12 | — | — | — | — | — | SE 8 | SE 7 | ESE 7 | S 8 | S 8 |
| kJ | 7 | 7 | 1 | 7 | 6 | 6 | 6 | — | 3 | 6 | 6 | — | — | — | — | — | 73 | 49 | 62 | 55 | 58 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SE 8 | — | SE 12 | SE 12 | — | SE 12 | — | — | — | — | — | — | E 5 | — | ENE 4 | ENE 4 |
| kJ | — | — | — | — | — | 3 | — | 6 | 6 | — | 5 | — | — | — | — | — | — | 11 | — | 6 | 2 |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 4 | S 6 | NNW 3 | — | NNW 2 | ENE 2 | — | — | SSE 7 | SSE 5 | S 6 | S 9 | S 9 | NNW 3 | NE 4 | NE 4 | ENE 5 | NE 4 | — | — |
| kJ | 17 | 32 | 94 | 3 | — | 1 | 1 | — | — | 84 | 74 | 119 | 1291 | 734 | 2 | 6 | 4 | 18 | 7 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 848 | 2911 | 320 | 22 | 0 | 4 | 0 | 80 | 56 | 532 | 1164 | 230 | 136 | 80 | 60 | 22 | 80 | 0 | 2 | 80 | 0 |
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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