AlaskaNatural lake, 2,189 acres, Kenai Peninsula Borough
Shamrock Lake wind forecast
7-day outlook
Daylight hours, 8am to 7pm local time. Wind in knots.
-
MonOct 26
1-10kt
W, gusts 20
High 34°F, rain 63%
Use caution -
TueOct 27
1-3kt
NW, gusts 4
High 32°F, rain 1%
Light wind -
WedOct 28
4-8kt
ESE, gusts 11
High 32°F, rain 91%
Good -
ThuOct 29
7-20kt
ESE, gusts 25
High 33°F, rain 92%
Use caution -
FriOct 30
6-15kt
SE, gusts 21
High 32°F, rain 96%
Use caution -
SatOct 31
3-5kt
SE, gusts 8
High 27°F, rain 65%
Use caution -
SunNov 1
2-5kt
ESE, gusts 7
High 23°F, rain 43%
Use caution
Hour by hour, next 3 days
This week on Shamrock
Over the next 7 days on Shamrock Lake, the windiest stretch looks like Thursday, with gusts to about 25 kt. Tuesday is the calmest day in the outlook, topping out near 3 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 Shamrock, 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.
Shamrock Lake forecast questions
What is the wind forecast for Shamrock Lake this weekend?
In the National Weather Service forecast from October 25: Saturday: SE wind 3 to 5 kt, gusts to 8 kt, high near 27°F, 65% chance of rain. Sunday: ESE wind 2 to 5 kt, gusts to 7 kt, high near 23°F. The live cards above always show the latest update.
When is the best day to sail on Shamrock Lake this week?
Based on the National Weather Service forecast from October 25, Wednesday looks best, with ESE wind around 4 to 8 kt and gusts near 11 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.
Where does the Shamrock 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 Shamrock is blown out, these are the closest alternatives. Tap through for their wind forecasts.