AlaskaNatural lake, 9,049 acres, Matanuska-Susitna Borough
Susitna Lake wind forecast
7-day outlook
Daylight hours, 8am to 7pm local time. Wind in knots.
-
MonOct 26
2-6kt
WSW, gusts 6
High 32°F, rain 5%
Use caution -
TueOct 27
1-3kt
N, gusts 4
High 30°F, rain 0%
Light wind -
WedOct 28
2-3kt
E, gusts 4
High 29°F, rain 2%
Light wind -
ThuOct 29
3-4kt
NE, gusts 6
High 31°F, rain 11%
Light wind -
FriOct 30
12-16kt
SE, gusts 20
High 37°F, rain 44%
Good -
SatOct 31
3-6kt
NE, gusts 7
High 32°F, rain 21%
Good -
SunNov 1
2-5kt
NNE, gusts 5
High 29°F, rain 25%
Use caution
Hour by hour, next 3 days
This week on Susitna
Over the next 7 days on Susitna Lake, the windiest stretch looks like Friday, with gusts to about 20 kt. Tuesday is the calmest day in the outlook, topping out near 3 kt.
Friday is the pick for sailing, and Tuesday looks best for kayaks and paddleboards. Mornings are usually calmer than afternoons, so check the hourly strip for the exact window.
Reading a lake wind forecast
Sustained wind is the average over a couple of minutes; gusts are the short peaks. On inland water the gap between the two matters as much as the average. A steady 12 kt is a pleasant sail, while 8 kt gusting 20 kt knocks small boats flat and tires out paddlers.
On a lake the size of Susitna, waves stay modest, but nearby hills, trees and buildings bend the wind. Expect shifts and puffs, especially close to shore, and treat the forecast speed as an average across open water.
The National Weather Service forecast covers a 2.5 km grid, so local effects like a sea breeze off a big lake, a cold front or afternoon thunderstorms can arrive earlier or stronger than shown. Check the forecast again on the morning you go, and keep an eye on small craft advisories.
Susitna Lake forecast questions
What is the wind forecast for Susitna Lake this weekend?
In the National Weather Service forecast from October 25: Saturday: NE wind 3 to 6 kt, gusts to 7 kt, high near 32°F. Sunday: NNE wind 2 to 5 kt, gusts to 5 kt, high near 29°F. The live cards above always show the latest update.
When is the best day to sail on Susitna Lake this week?
Based on the National Weather Service forecast from October 25, Friday looks best, with SE wind around 12 to 16 kt and gusts near 20 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.
Where does the Susitna Lake wind forecast come from?
From the National Weather Service gridded forecast for the 2.5 km cell over the lake. It is the same forecast local NWS offices use, updated several times a day. We convert wind to knots and add our own go or no-go call for each activity.
What wind is too strong for a kayak or paddleboard?
We flag paddling as risky once sustained wind passes about 8 kt or gusts pass 12 kt, and advise staying ashore above 12 kt sustained or 18 kt gusts. Offshore wind is the most dangerous because it pushes you away from the launch.
Nearby lakes
If Susitna is blown out, these are the closest alternatives. Tap through for their wind forecasts.