Surf Forecasts:
Nantasket Beach surf forecast from 15 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 2PM (local time) - 2.5ft (0.8m), 5s period, ENE swell with 32 kJ wave energy.
Best Forecast Surf Conditions for Nantasket Beach this week:
The most powerful waves expected at Nantasket Beach in the next 16 days are 0.8m 5s and forecast to arrive on Sunday (Jul 19) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Friday (Jul 17) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 19th Jul) | 2.5ft (0.8m) 5s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – the next 16 days at Nantasket Beach are a real tough watch. We’re looking at a long, flat spell with barely a ripple worth paddling for. The first real bump of energy doesn't show up until the morning of Sunday, July 19th, and even that is a weak offering.
For the first few days, from Wednesday the 15th right through to Saturday the 18th, it’s tiny. We’re talking ankle-snappers with swell heights of just 0.3ft and combined wave energy barely breaking double digits (4 to 10). The wind is mostly offshore or glassy, which would be perfect if there was any swell to clean up, but there just isn't. It’s a real tease.
The window opens slightly on Sunday, July 19th. Nantasket Beach picks up a wee bit of life with a 3ft swell from the ENE, but the period is a short, weak 5 seconds. The combined energy is still only moderate at best (37 to 58). The wind is cross-onshore to onshore, so it’s going to be a messy, lumpy affair. Not the kind of surf you’d drag yourself out of bed for.
Monday the 20th drops back to 2ft with a short period and cross-shore winds, keeping conditions poor. Tuesday the 21st offers a clean, offshore window with a 2ft swell from the SSE, but it’s still weak. It’s the best of a bad bunch, but honestly, it’s still a marginal day.
After that, the rest of the outlook into the end of July is a write-off. Swells stay below 2ft, and when they do appear, they’re short-period windswell. The winds are a mix of onshore and cross-offshore, but the lack of any real size or energy makes it all academic. The water temperature is about average for the time of year, so at least you won't freeze while sitting there watching the flat ocean.
This is a classic New England summer flat spell. It’s a blank run. If you’re dead set on getting wet, a longboard and a lot of patience are your only friends. Otherwise, hang tight and wait for the next storm track to spin something up.
Rusty.
Short Range ForecastMostly dry. Warm (max 34°C on Wed afternoon, min 20°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sat afternoon. Warm (max 26°C on Mon afternoon, min 18°C on Sat afternoon). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | E 9 | E 9 | E 16 | E 16 | E 15 | E 15 | N 4 | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | ENE 5 | ENE 5 | E 5 | E 5 | E 5 | ESE 5 | SSE 5 | E 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 5 | 5 | 4 | 4 | 8 | 4 | 4 | 4 | 4 | 3 | 3 | 31 | 29 | 13 | 13 | 13 | 14 | 19 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | glassy | glassy | cross-off | cross-off | glassy | cross-on | on | cross-off | cross-on | cross | cross-off | off | off |
High Tide | 11:54PM3.44m | 12:38PM2.95m | 00:50AM3.41m | 1:32PM3.01m | 1:45AM3.33m | 2:24PM3.02m | 2:38AM3.20m | 3:14PM3.01m | 3:31AM3.02m | 4:05PM2.96m | 4:26AM2.83m | 4:57PM2.90m | 5:24AM2.64m | 5:49PM2.83m | |||||||
Low Tide | 6:24AM-0.38m | 6:33PM-0.04m | 7:17AM-0.37m | 7:29PM-0.04m | 8:08AM-0.31m | 8:24PM-0.01m | 8:57AM-0.20m | 9:18PM0.06m | 9:47AM-0.05m | 10:14PM0.15m | 10:38AM0.12m | 11:13PM0.23m | 11:30AM0.29m | ||||||||
 |  |  |  | | | | | | | |  | | | |  | | | | | | |
 | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — |
 | 8:19 | — | 8:17 | — | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 32 | 31 | 34 | 30 | 30 | 32 | 24 | 24 | 27 | 25 | 22 | 20 | 18 | 21 | 22 | 21 | 24 | 26 | 23 | 29 | 32 |
Feels °C | 32 | 30 | 30 | 27 | 27 | 27 | 21 | 20 | 23 | 23 | 21 | 19 | 18 | 22 | 23 | 22 | 24 | 24 | 23 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | NNE 4 | — | E 9 | NNE 4 | E 9 | N 4 | — | E 14 | E 13 | E 13 | E 13 | ENE 5 | E 5 | E 5 | E 5 | ESE 5 | SE 5 | E 6 |
| kJ | 2 | 2 | 2 | 3 | — | 2 | 5 | 1 | 1 | — | 4 | 3 | 3 | 3 | 26 | 13 | 13 | 13 | 14 | 5 | 6 |
Swell 2 Height (m) Direction Period (s) | — | SE 5 | E 16 | E 9 | E 9 | E 15 | E 9 | E 15 | E 14 | E 14 | — | E 8 | E 8 | E 13 | E 12 | SE 9 | SE 10 | SE 10 | SE 10 | E 6 | SE 5 |
| kJ | — | 1 | 5 | 2 | 2 | 4 | 1 | 4 | 4 | 4 | — | 1 | 1 | 3 | 3 | 3 | 4 | 4 | 4 | 6 | 4 |
Swell 3 Height (m) Direction Period (s) | SE 5 | E 8 | — | E 16 | E 15 | E 15 | E 15 | E 9 | E 8 | E 8 | E 8 | E 8 | — | — | — | E 12 | E 12 | E 12 | SE 10 | SE 10 | E 10 |
| kJ | 1 | 1 | — | 5 | 4 | 4 | 5 | 2 | 1 | 1 | 1 | 1 | — | — | — | 3 | 3 | 3 | 4 | 4 | 2 |
Wind waves Height (m) Direction Period (s) | WSW 2 | WNW 2 | NNW 2 | — | — | NW 2 | N 4 | NNW 4 | — | — | — | S 2 | SE 3 | ENE 5 | ENE 5 | — | SE 3 | SSE 4 | SSE 4 | SSE 5 | W 2 |
| kJ | 1 | 1 | 1 | — | — | 1 | 8 | 2 | — | — | — | 1 | 2 | 31 | 29 | — | 3 | 3 | 13 | 19 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 108 | 113 | 88 | 117 | 160 | 961 | 523 | 531 | 2511 | 523 | 523 | 336 | 91 | 117 | 91 | 85 | 131 | 131 | 58 | 64 | 67 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Nantasket Beach Surf forecast
The above surf forecast table for Nantasket Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nantasket Beach can be found by selecting the local surf guide option on the grey menu. Our Nantasket 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 (Nantasket 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 Nantasket 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.
Nantasket Beach is 8 km (5 miles) from the city of Hingham. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Hingham. Hingham has rooms for a wide range of budgets as well as car hire and transport links.
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