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Long Sands surf break

Long Sands surfForecast / Maine / USA

information circle12 Day Weather and Surf, issued 1 pm Monday 18 Aug 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Long Sands surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Long Sands sea temperature is
18.5° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Long Sands this week:

The surf forecast for Long Sands over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 18) at 11PM. The primary swell is predicted to be 0.6m and 11s period with a secondary swell of 0.4m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Long Sands in the next 12 days are 2.0m 12s and forecast to arrive on Saturday (Aug 23) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Friday (Aug 22) at 11AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 18th Aug)2ft (0.6m) 11s
Best Surf11PM (Thu 21st Aug)3.5ft (1.0m) 17s
Most Powerful11AM (Sat 23rd Aug)6.5ft (2.0m) 12s

Table - best surf conditions forecast for Long Sands over the next 12 days.

Hourly12 Days
Maine Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 

Short Range Forecast Mostly dry. Very mild (max 19°C on Mon afternoon, min 15°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Sat afternoon, min 14°C on Thu night). Winds increasing (light winds from the NE on Thu night, fresh winds from the SSE by Sat afternoon).

Mon
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
0
0
1
0
0
2
1
1
3
1
2
3
1
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
ESE
0.6
SE
0.6
SE
0.5
SE
0.4
SE
0.4
SE
0.6
SE
0.6
SE
0.7
SE
1
SE
1
SE
1
SE
1.7
ESE
1.7
ESE
2
ESE
2
ESE
1.6
E
1.5
E
1.3
E
0.9
E
0.6
E
Period(s) (?)12111010151716161518171691012111112121110
Wave
Graph
(?)Metric surfscale
Energy (?)126939968110142188213238589604667103099911411001724678580323183
Wind
(km/h)
10
SSE
10
NNW
15
ENE
10
SE
5
WSW
5
E
10
SSE
5
SSE
10
E
15
ESE
10
NNE
20
NE
10
SE
10
WSW
20
S
35
SSE
20
SSW
20
S
25
S
15
SSW
15
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
off		cross-
on		onglasscross-
on		onglasscross-
on		cross-
on		cross-
off		crossoncross-
off		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
off
High Tide
/ height (m)
7:33PM
2.89
8:26AM
2.44
8:41PM
2.92
9:30AM
2.50
9:42PM
2.97
10:25AM
2.57
10:37PM
3.01
11:16AM
2.65
11:27PM
3.02
12:03PM
2.71
12:14AM
2.99
12:45PM
2.76
12:58AM
2.93
1:24PM
2.77
Low Tide
/ height (m)
2:15AM
0.07
2:23PM
0.34
3:20AM
0.02
3:27PM
0.29
4:18AM
-0.05
4:24PM
0.22
5:09AM
-0.09
5:16PM
0.15
5:56AM
-0.11
6:05PM
0.10
6:39AM
-0.08
6:51PM
0.09
7:18AM
-0.02
Mon
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Sunrise--5:50--5:52--5:54--5:54--5:56--5:56--5:58
Sunset7:40--7:38--7:37--7:36--7:34--7:32--7:30--
part cloudpart cloudpart cloudpart cloudcloudcloudpart cloudpart cloudpart cloudclearclearclearclearclearclearpart cloudpart cloudcloudthunderstorm thunderstorm clear
Rain (mm)
------------------39-
Temp. °C191817171717191818191719201822242222222025
Feels °C (?)151613141516171716161616181719191720201922
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Maine

  1. weather stationWind Update The wind is still cross-on at Long Sands (light winds from the ENE at Western Maine Shelf Buoy 16 km from Long Sands). 1.0m 6s windswell from the NE with a 0.3m 11s groundswell from the SE and a 0.2m 13s groundswell, also from the SE as well as a 0.2m 10s swell, also from the E. 4 swells combining to make bigger set waves.

    2 hours 10 minutes ago Long Sands
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16 km away, 2 h 10 min ago

18 km/h
ENE
0.0
18.5
Air / Water (°C)
Please reload the page to see if there are any updates.

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.

View detailed surf forecast for Long Sands at:
surf-forecast.com

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 12 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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