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Surf Forecasts:

Long Sands surf break

Long Sands surfForecast / Maine / USA

information circle12 Day Weather and Surf, issued 7 pm Wednesday 17 Sep 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
16.6° 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 Wednesday (Sep 17) at 11PM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.2m and 7s. 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 1.1m 9s and forecast to arrive on Tuesday (Sep 23) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Saturday (Sep 20) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 17th Sep)2.5ft (0.7m) 9s
Best Surf11PM (Wed 17th Sep)2.5ft (0.7m) 9s
Most Powerful 8PM (Tue 23rd Sep)3.5ft (1.1m) 9s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 4mm), mostly falling on Wed night. Warm (max 21°C on Thu afternoon, min 11°C on Sat morning). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 29°C on Tue afternoon, min 11°C on Sat night). Wind will be generally light.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
1
0
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.7
SE
0.6
SE
0.8
SE
0.8
SE
0.6
SE
0.6
SE
0.4
SE
0.4
ESE
0.4
ESE
0.3
ESE
0.3
SE
0.5
SE
0.7
SE
0.7
SE
0.8
SE
0.7
SE
0.9
SE
1
SE
1.1
SE
0.9
SE
0.7
SE
Period(s) (?)8788777888131212111110109999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)60397582393713242411277514212314010216015616811273
Wind
(km/h)
5
NW
5
SSW
15
S
10
WNW
5
NE
5
S
15
N
10
ENE
15
SSE
10
NNW
5
E
15
SSE
10
WSW
10
SSW
15
SSE
15
SW
15
SW
15
S
15
WSW
15
NW
25
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offglasscross-
on		cross-
off		crosscross-
on		cross-
off		cross-
on		cross-
on		offcross-
on		cross-
on		cross-
off		cross-
on		cross-
on		crosscrosscross-
on		cross-
off		offcross
High Tide
/ height (m)
8:35PM
2.82
9:19AM
2.54
9:34PM
2.87
10:11AM
2.64
10:25PM
2.89
10:56AM
2.72
11:12PM
2.89
11:38AM
2.77
11:55PM
2.85
12:16PM
2.81
12:35AM
2.79
12:51PM
2.81
1:14AM
2.70
1:24PM
2.79
Low Tide
/ height (m)
3:10AM
0.08
3:22PM
0.29
4:03AM
0.03
4:16PM
0.20
4:50AM
0.01
5:04PM
0.12
5:32AM
0.02
5:49PM
0.07
6:10AM
0.07
6:30PM
0.05
6:46AM
0.13
7:08PM
0.06
7:19AM
0.22
7:45PM
0.11
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
Sunrise-6:24--6:24--6:26--6:28--6:28--6:30--6:31-
Sunset--6:46--6:45--6:44--6:42--6:39--6:37--6:37
rain showers
rain showers
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
thunderstorm
Rain (mm)
31------------------5
Temp. °C161921202021181314141415151417162429262723
Feels °C (?)17202018192017910111213111114132328252723
  • 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 Continuing clean conditions at Long Sands (light winds from the NW at BUOY-CMLN3 12 km from Long Sands). 0.6m 7s swell from the SE with a 0.2m 7s swell from the E. 2 swells combining to make bigger set waves.

    2 hours 8 minutes ago Long Sands
Expand
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>
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2 h 8 min ago

9 km/h
NW
Clean
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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