AlaskaNatural lake, 1,236 acres, Juneau City and Borough
Lower Sweetheart Lake wind forecast
7-day outlook
Daylight hours, 8am to 7pm local time. Wind in knots.
-
MonOct 26
2-4kt
NE, gusts 9
High 37°F, rain 40%
Light wind -
TueOct 27
16-18kt
NNE, gusts 30
High 40°F, rain 0%
Stay ashore -
WedOct 28
12-19kt
NE, gusts 25
High 34°F, rain 0%
Use caution -
ThuOct 29
2-8kt
NE, gusts 14
High 35°F, rain 0%
Good -
FriOct 30
4-6kt
SE, gusts 7
High 35°F, rain 35%
Good -
SatOct 31
6-9kt
SE, gusts 10
High 35°F, rain 61%
Good -
SunNov 1
3-6kt
ESE, gusts 8
High 36°F, rain 55%
Use caution
Hour by hour, next 3 days
This week on Lower Sweetheart
Over the next 7 days on Lower Sweetheart Lake, the windiest stretch looks like Tuesday, with gusts to about 30 kt. Monday is the calmest day in the outlook, topping out near 4 kt.
Saturday is the pick for sailing, and Monday 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 Lower Sweetheart, 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.
Lower Sweetheart Lake forecast questions
What is the wind forecast for Lower Sweetheart Lake this weekend?
In the National Weather Service forecast from October 25: Saturday: SE wind 6 to 9 kt, gusts to 10 kt, high near 35°F, 61% chance of rain. Sunday: ESE wind 3 to 6 kt, gusts to 8 kt, high near 36°F, 55% chance of rain. The live cards above always show the latest update.
When is the best day to sail on Lower Sweetheart Lake this week?
Based on the National Weather Service forecast from October 25, Saturday looks best, with SE wind around 6 to 9 kt and gusts near 10 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.
Where does the Lower Sweetheart 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 Lower Sweetheart is blown out, these are the closest alternatives. Tap through for their wind forecasts.