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Southwick Beach State Park surfForecast / Lake Ontario / USA

information circle12 Day Weather and Surf, issued 1 am Monday 18 Aug 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Southwick Beach State Park surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Southwick Beach State Park sea temperature is
24.6° C
 (Which is 3.3°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Southwick Beach State Park this week:

The most powerful waves expected at Southwick Beach State Park in the next 12 days are 0.2m 3s and forecast to arrive on Sunday (Aug 24) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Monday (Aug 18) at 5AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Sun 24th Aug)0.5ft (0.2m) 3s

Table - best surf conditions forecast for Southwick Beach State Park over the next 12 days.

Hourly12 Days
Lake Ontario – United States Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 

Short Range Forecast Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 24°C on Mon afternoon, min 11°C on Mon morning). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Sat night. Warm (max 27°C on Thu afternoon, min 17°C on Thu morning). Winds increasing (calm on Thu night, fresh winds from the SSE by Sat afternoon).

Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
NE
0.8
NE
0.4
NE
—————
0.6
NE
0.7
NE
0.6
NNE
0.4
NE
0.4
NE
0.2
NNE
———
0.2
W
———
Period(s) (?)654-----454433---3---
Wave
Graph
(?)Metric surfscale
Energy (?)000000000000000001000
Wind
(km/h)
25
NE
25
NNE
10
SE
15
S
15
ENE
20
S
15
S
15
NE
20
NE
20
NNE
20
N
0
NE
10
SSW
5
WSW
20
SSE
20
SSW
35
SSE
20
SSE
20
WSW
20
WSW
15
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcrosscross-
on		offcross-
on		cross-
on		offoffcross-
off		cross-
off		glassonglasscrossoncross-
on		cross-
on		cross-
on		cross-
on		cross
High Tide
/ height (m)
n/a
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n/a
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n/a
n/a
n/a
Low Tide
/ height (m)
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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n/a
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Sunrise6:11--6:13--6:13--6:15--6:16--6:16--6:18--
Sunset-8:04--8:02--8:00--7:59--7:58--7:55--7:54-
clearclearpart cloudpart cloudpart cloudcloudcloudrain showerspart cloudclearclearclearpart cloudclearclearpart cloudthunderstorm thunderstorm part cloudclearrain showers
Rain (mm)
-------2--------37--1
Temp. °C182421192324202119232724232624262621212422
Feels °C (?)121815162324172017202421222623242518202020
  • 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 Lake Ontario

  1. weather stationWind Update The wind is still offshore at Southwick Beach State Park (light winds from the NE at Watertown Airport 29 km from Southwick Beach State Park). not gfswave

    2 hours 15 minutes ago Southwick Beach State Park
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29 km away, 2 h 15 min ago

13 km/h
NE
11.7
24.6
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 Southwick Beach State Park 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 Southwick Beach State Park at:
surf-forecast.com

Information about the Southwick Beach State Park Surf forecast

The above surf forecast table for Southwick Beach State Park provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Southwick Beach State Park can be found by selecting the local surf guide option on the grey menu. Our Southwick Beach State Park 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 (Southwick Beach State Park) 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 Southwick Beach State Park 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.

Southwick Beach State Park is 35 km (22 miles) from Watertown. If you plan a vacation in Lake Ontario - United States, look for hotels and other accommodation in Watertown. Watertown has rooms for a wide range of budgets as well as car hire and transport links.

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