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AlaskaNatural lake, 9,228 acres, North Slope Borough

Sinclair Lake wind forecast

Shoreline: USGS National Hydrography Dataset

7-day outlook

Daylight hours, 8am to 7pm local time. Wind in knots.

  1. MonOct 26

    9-11kt

    S, gusts 18

    High 29°F, rain 14%

    Good
  2. TueOct 27

    9-16kt

    S, gusts 23

    High 32°F, rain 46%

    Use caution
  3. WedOct 28

    11-13kt

    SSE, gusts 23

    High 32°F, rain 43%

    Use caution
  4. ThuOct 29

    11-16kt

    SW, gusts 27

    High 30°F, rain 23%

    Stay ashore
  5. FriOct 30

    8-10kt

    ESE, gusts 17

    High 28°F, rain 31%

    Good
  6. SatOct 31

    6-8kt

    W, gusts 12

    High 26°F, rain 26%

    Good
  7. SunNov 1

    6-7kt

    WSW, gusts 12

    High 23°F, rain 20%

    Good

Hour by hour, next 3 days

Wind and gusts0 to 30+ ktScoreGood, caution, stay ashoreNightBest windowArrows point where the wind blows to.

This week on Sinclair

Over the next 7 days on Sinclair Lake, the windiest stretch looks like Thursday, with gusts to about 27 kt. Sunday is the calmest day in the outlook, topping out near 7 kt.

Monday is the pick for sailing, and 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 Sinclair, 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.

Sinclair Lake forecast questions

What is the wind forecast for Sinclair Lake this weekend?

In the National Weather Service forecast from October 25: Saturday: W wind 6 to 8 kt, gusts to 12 kt, high near 26°F. Sunday: WSW wind 6 to 7 kt, gusts to 12 kt, high near 23°F. The live cards above always show the latest update.

When is the best day to sail on Sinclair Lake this week?

Based on the National Weather Service forecast from October 25, Monday looks best, with S wind around 9 to 11 kt and gusts near 18 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.

Where does the Sinclair 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 Sinclair is blown out, these are the closest alternatives. Tap through for their wind forecasts.