WashingtonReservoir, 3,837 acres
Lake Merwin wind forecast
7-day outlook
Daylight hours, 8am to 7pm local time. Wind in knots.
-
TodayOct 26
0-3kt
SSE, gusts 7
High 54°F, rain 74%
Stay ashore -
TueOct 27
1-3kt
WSW, gusts 8
High 54°F, rain 71%
Light wind -
WedOct 28
1-4kt
S, gusts 8
High 51°F, rain 100%
Light wind -
ThuOct 29
1-4kt
SE, gusts 8
High 51°F, rain 79%
Light wind -
FriOct 30
0-2kt
ESE, gusts 4
High 54°F, rain 24%
Light wind -
SatOct 31
0-2kt
E, gusts 4
High 58°F, rain 15%
Light wind -
SunNov 1
0-2kt
ENE, gusts 5
High 59°F, rain 7%
Light wind
Hour by hour, next 3 days
This week on Merwin
Over the next 7 days on Lake Merwin, the windiest stretch looks like Tuesday, with gusts to about 8 kt. Friday is the calmest day in the outlook, topping out near 2 kt.
Sunday 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 Merwin, 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.
Lake Merwin forecast questions
What is the wind forecast for Lake Merwin this weekend?
In the National Weather Service forecast from October 26: Saturday: E wind 0 to 2 kt, gusts to 4 kt, high near 58°F. Sunday: ENE wind 0 to 2 kt, gusts to 5 kt, high near 59°F. The live cards above always show the latest update.
When is the best day to sail on Lake Merwin this week?
Based on the National Weather Service forecast from October 26, Sunday looks best, with ENE wind around 0 to 2 kt and gusts near 5 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.
Where does the Lake Merwin 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 Merwin is blown out, these are the closest alternatives. Tap through for their wind forecasts.