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ColoradoReservoir, 11,686 acres

John Martin Reservoir wind forecast

John Martin Reservoir, Colorado
Photo: Jaywm, CC BY-SA 4.0

7-day outlook

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

  1. TodayOct 26

    3-9kt

    W, gusts 16

    High 66°F, rain 0%

    Good
  2. TueOct 27

    4-7kt

    SSE, gusts 14

    High 69°F, rain 0%

    Good
  3. WedOct 28

    5-9kt

    WNW, gusts 18

    High 73°F, rain 0%

    Good
  4. ThuOct 29

    3-7kt

    ENE, gusts 12

    High 68°F, rain 1%

    Good
  5. FriOct 30

    6-11kt

    SSE, gusts 18

    High 70°F, rain 20%

    Good
  6. SatOct 31

    5-8kt

    W, gusts 15

    High 68°F, rain 10%

    Good
  7. SunNov 1

    5-13kt

    SSE, gusts 23

    High 67°F, rain 30%

    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 John Martin

Over the next 7 days on John Martin Reservoir, the windiest stretch looks like Sunday, with gusts to about 23 kt. Tuesday is the calmest day in the outlook, topping out near 7 kt.

Friday 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.

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.

John Martin Reservoir is large enough for wind to build real waves. When the forecast direction lines up with the long open stretches of the lake, expect bigger chop than the wind speed alone suggests, and plan routes that keep you near a sheltered shore on the way back.

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.

John Martin Reservoir forecast questions

What is the wind forecast for John Martin Reservoir this weekend?

In the National Weather Service forecast from October 26: Saturday: W wind 5 to 8 kt, gusts to 15 kt, high near 68°F. Sunday: SSE wind 5 to 13 kt, gusts to 23 kt, high near 67°F. The live cards above always show the latest update.

When is the best day to sail on John Martin Reservoir this week?

Based on the National Weather Service forecast from October 26, Friday looks best, with SSE wind around 6 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 John Martin Reservoir 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 John Martin is blown out, these are the closest alternatives. Tap through for their wind forecasts.