Skip to content
lakeglance

CaliforniaReservoir

Lake San Antonio wind forecast

Lake San Antonio, California
Photo: Cam Vilay, CC BY 3.0

7-day outlook

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

  1. TodayOct 26

    1-4kt

    NNW, gusts 11

    High 73°F, rain 0%

    Light wind
  2. TueOct 27

    3-6kt

    NNW, gusts 14

    High 69°F, rain 0%

    Use caution
  3. WedOct 28

    2kt

    NNE, gusts 8

    High 70°F, rain 0%

    Light wind
  4. ThuOct 29

    0-4kt

    SW, gusts 12

    High 68°F, rain 0%

    Light wind
  5. FriOct 30

    1-5kt

    W, gusts 12

    High 65°F, rain 1%

    Use caution
  6. SatOct 31

    2-4kt

    NW, gusts 12

    High 61°F, rain 27%

    Light wind
  7. SunNov 1

    3-5kt

    N, gusts 12

    High 62°F, rain 31%

    Use caution

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 San Antonio

Over the next 7 days on Lake San Antonio, the windiest stretch looks like Tuesday, with gusts to about 14 kt. Wednesday is the calmest day in the outlook, topping out near 2 kt.

Tuesday is the pick for sailing, and Wednesday 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 San Antonio, 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 San Antonio forecast questions

What is the wind forecast for Lake San Antonio this weekend?

In the National Weather Service forecast from October 26: Saturday: NW wind 2 to 4 kt, gusts to 12 kt, high near 61°F. Sunday: N wind 3 to 5 kt, gusts to 12 kt, high near 62°F. The live cards above always show the latest update.

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

Based on the National Weather Service forecast from October 26, Tuesday looks best, with NNW wind around 3 to 6 kt and gusts near 14 kt. Forecasts beyond three days shift, so check the live day cards above and look again the night before.

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