Surf Forecasts:
Long Sands surf forecast from 11 Sep 2026:
- Best quality surf: Monday 14 Sep, 2PM (local time) - 2.5ft (0.7m), 8s period, SE swell with glassy winds.
- Most powerful swell: Friday 18 Sep, 2AM (local time) - 5ft (1.5m), 6s period, ENE swell with 143 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 2PM (local time) - 2.5ft (0.7m), 8s period with SE swell.
Best Forecast Surf Conditions for Long Sands this week:
The surf forecast for Long Sands over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 14) at 2PM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.3m and 3s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Long Sands in the next 16 days are 1.5m 6s and forecast to arrive on Friday (Sep 18) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Sep 14) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Mon 14th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 2PM (Mon 14th Sep) | 2.5ft (0.7m) 8s |
| Most Powerful | 2AM (Fri 18th Sep) | 5ft (1.5m) 6s |
Table - best surf conditions forecast for Long Sands over the next 16 days.
Short Range ForecastModerate rain (total 19mm), heaviest on Sun morning. Warm (max 24°C on Thu night, min 14°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Wed afternoon, min 13°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 10 | SE 10 | SE 10 | SE 11 | ESE 10 | ESE 10 | S 5 | SE 10 | SE 10 | SE 9 | SE 9 | SE 8 | SE 7 | SE 7 | SSE 4 | S 4 | S 4 | S 4 | ESE 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 15 | 24 | 15 | 18 | 9 | 9 | 27 | 25 | 23 | 21 | 22 | 55 | 44 | 24 | 17 | 32 | 17 | 9 | 17 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | glassy | cross-on | on | cross | cross-on | cross-on | off | off | glassy | cross-off | on | cross-on | cross | cross | cross | cross |
High Tide | 11:24PM3.10m | 11:53AM2.94m | 00:13AM3.06m | 12:37PM2.99m | 1:00AM2.97m | 1:19PM2.98m | 1:44AM2.85m | 2:00PM2.92m | 2:29AM2.70m | 2:41PM2.83m | 3:16AM2.54m | 3:25PM2.72m | 4:06AM2.39m | ||||||
Low Tide | 5:45AM-0.19m | 6:04PM-0.14m | 6:30AM-0.16m | 6:52PM-0.16m | 7:12AM-0.07m | 7:37PM-0.12m | 7:52AM0.06m | 8:22PM-0.03m | 8:33AM0.22m | 9:07PM0.09m | 9:16AM0.37m | 9:57PM0.23m | |||||||
 |  | |  | | |  |  |  | | | | | |  | | | | | |
 | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — |
 | 7:01 | — | 7:00 | — | — | 6:58 | — | — | 6:55 | — | — | 6:54 | — | — | 6:52 | — | — | 6:51 | — |
mm | — | — | — | — | — | — | 3 | 14 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 18 | 23 | 20 | 18 | 18 | 19 | 17 | 19 | 20 | 20 | 21 | 18 | 15 | 16 | 15 | 20 | 25 | 24 |
Feels °C | 21 | 14 | 19 | 17 | 16 | 14 | 17 | 16 | 21 | 20 | 17 | 20 | 15 | 13 | 13 | 11 | 18 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 10 | SE 10 | SE 11 | ESE 10 | ESE 10 | S 5 | SE 10 | SE 10 | SSE 4 | SE 6 | SE 8 | SE 7 | SE 7 | ENE 5 | E 6 | E 6 | ESE 9 | SSE 5 |
| kJ | 11 | 24 | 15 | 18 | 9 | 9 | 27 | 24 | 23 | 16 | 22 | 55 | 44 | 24 | 5 | 2 | 3 | 9 | 14 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SSE 6 | NE 4 | — | SE 6 | — | SE 10 | — | — | SE 9 | SE 9 | NE 4 | E 15 | E 15 | ESE 9 | ESE 9 | ESE 9 | E 6 | ESE 13 |
| kJ | 15 | 4 | 1 | — | 1 | — | 15 | — | — | 21 | 19 | 2 | 4 | 4 | 8 | 8 | 9 | 2 | 17 |
Swell 3 Height (m) Direction Period (s) | — | S 9 | — | — | — | — | — | — | — | — | — | — | E 15 | E 15 | E 15 | SE 14 | SE 13 | SE 13 | ESE 9 |
| kJ | — | 1 | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 4 | 7 | 7 | 7 | 8 |
Wind waves Height (m) Direction Period (s) | — | NW 3 | — | — | — | SSE 3 | SSW 4 | SSE 4 | SSE 4 | WSW 2 | NNE 3 | NE 4 | NE 4 | E 4 | SSE 4 | S 4 | S 4 | S 4 | NNE 3 |
| kJ | — | 2 | — | — | — | 5 | 12 | 25 | 21 | 1 | 1 | 3 | 14 | 9 | 17 | 32 | 17 | 9 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 209 | 213 | 484 | 274 | 1311 | 1312 | 11 | 213 | 40 | 11 | 11 | 11 | 11 | 474 | 833 | 2594 | 11 | 11 | 468 |
Best forecast wave conditions in Maine | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Long Sands surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Long Sands Surf forecast
The above surf forecast table for Long Sands provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Long Sands can be found by selecting the local surf guide option on the grey menu. Our Long Sands 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 (Long Sands) 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 Long Sands 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.
Long Sands is 15 km (9 miles) from Portsmouth. If you plan a vacation in Maine, look for hotels and other accommodation in Portsmouth. Portsmouth has rooms for a wide range of budgets as well as car hire and transport links.
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