AlaskaNatural lake, 2,164 acres, Kenai Peninsula Borough
Cooper Lake wind forecast
7-day outlook
Daylight hours, 8am to 7pm local time. Wind in knots.
-
MonOct 26
2-4kt
WSW, gusts 6
High 40°F, rain 9%
Light wind -
TueOct 27
0-1kt
WNW, gusts 1
High 40°F, rain 0%
Light wind -
WedOct 28
5-9kt
SE, gusts 13
High 41°F, rain 59%
Good -
ThuOct 29
4-7kt
ESE, gusts 18
High 41°F, rain 76%
Use caution -
FriOct 30
1-10kt
ESE, gusts 19
High 41°F, rain 95%
Use caution -
SatOct 31
0-2kt
ESE, gusts 6
High 38°F, rain 55%
Light wind -
SunNov 1
0kt
Variable, gusts 4
High 35°F, rain 41%
Light wind
Hour by hour, next 3 days
This week on Cooper
Over the next 7 days on Cooper Lake, the windiest stretch looks like Friday, with gusts to about 19 kt. Sunday is the calmest day in the outlook, topping out near 0 kt.
Wednesday 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 Cooper, 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.
Cooper Lake forecast questions
What is the wind forecast for Cooper Lake this weekend?
In the National Weather Service forecast from October 25: Saturday: ESE wind 0 to 2 kt, gusts to 6 kt, high near 38°F, 55% chance of rain. Sunday: wind 0 kt, gusts to 4 kt, high near 35°F. The live cards above always show the latest update.
When is the best day to sail on Cooper Lake this week?
Based on the National Weather Service forecast from October 25, Wednesday looks best, with SE wind around 5 to 9 kt and gusts near 13 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.
Where does the Cooper 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 Cooper is blown out, these are the closest alternatives. Tap through for their wind forecasts.