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lakeglance

LouisianaNatural lake, 1,329 acres, St. Bernard Parish

Halfmoon Lake wind forecast

Shoreline: USGS National Hydrography Dataset

7-day outlook

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

  1. TodayOct 26

    8-16kt

    ENE, gusts 17

    High 72°F, rain 0%

    Good
  2. TueOct 27

    8-14kt

    ENE, gusts 15

    High 73°F, rain 0%

    Good
  3. WedOct 28

    7-15kt

    ENE, gusts 16

    High 74°F, rain 0%

    Good
  4. ThuOct 29

    5-15kt

    NE, gusts 17

    High 74°F, rain 0%

    Good
  5. FriOct 30

    7-15kt

    ENE, gusts 18

    High 75°F, rain 5%

    Good
  6. SatOct 31

    7-12kt

    E, gusts 15

    High 76°F, storms possible

    Stay ashore
  7. SunNov 1

    4-8kt

    SE, gusts 10

    High 77°F, storms possible

    Stay ashore

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 Halfmoon

Over the next 7 days on Halfmoon Lake, the windiest stretch looks like Friday, with gusts to about 18 kt. Sunday is the calmest day in the outlook, topping out near 8 kt.

Monday is the pick for sailing, and Thursday looks best for kayaks and paddleboards. Mornings are usually calmer than afternoons, so check the hourly strip for the exact window.

Thunderstorms are in the forecast for Saturday, Sunday. Plan to be off the water before the first rumble; lightning can strike miles ahead of a storm.

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 Halfmoon, 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.

Halfmoon Lake forecast questions

What is the wind forecast for Halfmoon Lake this weekend?

In the National Weather Service forecast from October 26: Saturday: E wind 7 to 12 kt, gusts to 15 kt, high near 76°F, thunderstorms possible. Sunday: SE wind 4 to 8 kt, gusts to 10 kt, high near 77°F, thunderstorms possible. The live cards above always show the latest update.

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

Based on the National Weather Service forecast from October 26, Monday looks best, with ENE wind around 8 to 16 kt and gusts near 17 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.

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