Surf Forecasts:
Nahant Beach surf forecast from 17 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 8AM (local time) - 3ft (0.9m), 6s period, E swell with 54 kJ wave energy.
Best Forecast Surf Conditions for Nahant Beach this week:
The most powerful waves expected at Nahant Beach in the next 16 days are 0.9m 6s and forecast to arrive on Sunday (Aug 23) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Wednesday (Aug 19) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sun 23rd Aug) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Nahant Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what’s on offer for our local stretch.
Honestly, it’s a pretty flat and quiet run ahead. We’re looking at a long stretch of days with barely anything to get excited about. The first real chance of anything surfable doesn’t show up until late in the period, so be prepared to wait.
For the first week and a half, from Monday the 17th of August right through to the end of the month, it’s mostly small, weak, and messy. Swell heights stay under 3 feet for the bulk of that time, with periods hanging around the 5 to 8 second mark – that’s short-period windswell, lacking any punch. The combined energy is mostly in the low double digits, barely registering. Winds are often cross-onshore or onshore, keeping the surface chopped up. A couple of mornings on the 19th and 24th offer a moment of glass, but with waves only 0.6 to 2 feet, it’s flat and not worth paddling out for.
Finally, things try to wake up a bit on Thursday the 27th of August. We see a small bump of swell arriving from the ESE, pushing up to around 4 feet by the afternoon. The period is still short, around 5-6 seconds, but the combined energy climbs to 109 (moderate) by the afternoon. The wind turns light and cross-offshore from the SSW, so conditions could actually be pretty clean. This is the only real standout in the whole outlook – it’s not big, but it’s the best we’ve got.
Now, the break is Nahant Beach. It’s a consistent, exposed beach break that’s best with an ENE swell direction. This ESE swell is not its absolute optimum, but it’s close enough to work. With waves around 3 to 4 feet, it’s still fine for beginners, but the short period means it might be a bit soft and crumbly. Crowds are often here, so expect company. The water temp is sitting at 68°F, which is about 1° cooler than average for the time of year – nothing unusual, just a touch on the cooler side.
After that, the swell drops right back off again on Friday the 28th, with onshore winds returning, and we finish the run into September with tiny, choppy conditions. Nothing else stands out.
So, to sum it up: a long flat spell, then one decent window on Thursday the 27th. If you're desperate, that’s your day. Otherwise, it’s boards in the shed.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 19°C on Mon afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 50mm), heaviest during Fri afternoon. Warm (max 21°C on Thu afternoon, min 15°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | SE 4 | SE 4 | SE 8 | SE 8 | SE 7 | ESE 6 | E 6 | ESE 6 | ESE 8 | ESE 8 | ESE 6 | E 8 | ESE 8 | ESE 8 | E 5 | E 5 | E 6 | E 6 | E 6 | E 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3 | 5 | 11 | 24 | 25 | 23 | 20 | 15 | 23 | 22 | 13 | 33 | 37 | 20 | 21 | 35 | 40 | 52 | 40 | 14 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | glassy | glassy | glassy | glassy | cross-on | on | cross | cross-on | cross | cross-off | cross-on | on | on | on | cross-on | cross-off |
High Tide | 3:28PM2.95m | 3:55AM2.73m | 4:15PM2.86m | 4:46AM2.55m | 5:05PM2.75m | 5:41AM2.40m | 5:58PM2.66m | 6:40AM2.29m | 6:54PM2.61m | 7:40AM2.24m | 7:52PM2.60m | 8:39AM2.26m | 8:48PM2.64m | |||||||
Low Tide | 9:40PM0.09m | 9:57AM0.22m | 10:32PM0.21m | 10:45AM0.40m | 11:26PM0.34m | 11:37AM0.54m | 00:24AM0.43m | 12:32PM0.64m | 1:24AM0.48m | 1:29PM0.68m | 2:24AM0.46m | 2:26PM0.66m | 3:18AM0.41m | |||||||
 |  | | |  |  | | | |  |  |  | | | | | |  |  | | |
 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — |
 | 7:42 | — | — | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:32 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | 4 | 11 | 33 | — | — | — | — | — | 1 | — |
Temp °C | 20 | 20 | 22 | 23 | 20 | 25 | 29 | 28 | 22 | 21 | 20 | 18 | 16 | 15 | 19 | 19 | 18 | 18 | 18 | 17 |
Feels °C | 21 | 21 | 23 | 24 | 21 | 27 | 29 | 29 | 23 | 20 | 23 | 18 | 12 | 13 | 18 | 17 | 17 | 16 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 4 | SE 4 | SE 8 | SE 7 | ESE 6 | E 6 | ESE 6 | ESE 8 | ESE 8 | ESE 6 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 6 | ESE 12 | E 6 | E 5 |
| kJ | 3 | 5 | 5 | 24 | 25 | 23 | 20 | 15 | 23 | 22 | 13 | 33 | 37 | 20 | 19 | 11 | 40 | 15 | 40 | 13 |
Swell 2 Height (m) Direction Period (s) | — | SE 9 | SE 8 | NE 4 | ENE 4 | ESE 8 | ESE 8 | ESE 8 | — | — | ESE 8 | E 15 | E 14 | ESE 5 | E 13 | E 13 | E 13 | — | ESE 12 | ESE 12 |
| kJ | — | 3 | 3 | 3 | 3 | 7 | 7 | 7 | — | — | 6 | 4 | 4 | 9 | 14 | 13 | 13 | — | 14 | 14 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 8 | ESE 4 | ESE 9 | E 9 | — | — | — | — | E 15 | E 15 | E 14 | E 14 | — | — | E 9 | — | SE 9 | ESE 7 |
| kJ | — | — | 11 | 4 | 7 | 1 | — | — | — | — | 4 | 4 | 4 | 4 | — | — | 2 | — | 3 | 5 |
Wind waves Height (m) Direction Period (s) | SE 4 | — | NE 3 | — | — | — | — | — | — | NE 3 | — | E 4 | — | E 5 | E 5 | E 5 | — | E 6 | — | — |
| kJ | 3 | — | 1 | — | — | — | — | — | — | 1 | — | 3 | — | 11 | 21 | 35 | — | 52 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 127 | 127 | 123 | 123 | 43 | 47 | 520 | 47 | 174 | 956 | 93 | 342 | 477 | 53 | 673 | 650 | 43 | 270 | 97 | 47 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Nahant Beach Surf forecast
The above surf forecast table for Nahant Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nahant Beach can be found by selecting the local surf guide option on the grey menu. Our Nahant Beach 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 (Nahant Beach) 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 Nahant Beach 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.
Nahant Beach is 7 km (4 miles) from Lynn. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Lynn. Lynn has rooms for a wide range of budgets as well as car hire and transport links.
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