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Kirwin Reservoir is one of the reservoirs LakeRadar tracks in Kansas. It covers roughly 5,079 surface acres (about 8 square miles). Nearby alternatives include Wilson Lake. The page brings together an hourly and 7-day forecast, wind and gust outlook, and activity scores for boating, paddling, and swimming. Check the hourly forecast and activity outlook below before heading out to Kirwin Reservoir.
Updated
No active alerts for this lake as of the last check (Oct 11, 3:38 PM CDT). Alerts are re-checked automatically; see the official source for updates.
Overall Fair (70/100) across 4 activities. Best right now: Sailing (86/100).
How the score is calculated →Best excellent fishing window, averaging 91/100 across these hours. Wind 5 mph from the south-southwest. Dusk hours (19:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 91° | 92° | 90° | 89° | 87° | 84° | 80° | 77° | 76° | 76° | 74° | 74° | 73° | 73° | 73° | 72° | 72° | 71° | 73° | 76° | 81° | 85° | 90° | 92° |
| Wind (kts) | 17 | 17 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Direction | SW | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | SW |
| Gusts (kts) | 23 | 24 | 24 | 22 | 20 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 24 | 23 | 24 | 24 | 23 | 24 | 25 | 24 | 24 | 23 | 22 | 21 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 3 PM CDT | 91°F | 20 mph SSW (203°) | 27 mph | 0% | 24% | Sunny |
| Sun, 4 PM CDT | 92°F | 20 mph S (180°) | 28 mph | 0% | 12% | Sunny |
| Sun, 5 PM CDT | 90°F | 15 mph S (180°) | 28 mph | 0% | 19% | Sunny |
| Sun, 6 PM CDT | 89°F | 15 mph S (180°) | 25 mph | 0% | 26% | Partly Cloudy |
| Sun, 7 PM CDT | 87°F | 15 mph S (180°) | 23 mph | 0% | 33% | Partly Cloudy |
| Sun, 8 PM CDT | 84°F | 15 mph S (180°) | 29 mph | 0% | 23% | Mostly Clear |
| Sun, 9 PM CDT | 80°F | 15 mph S (180°) | 29 mph | 0% | 13% | Mostly Clear |
| Sun, 10 PM CDT | 77°F | 15 mph S (180°) | 28 mph | 0% | 3% | Clear |
| Sun, 11 PM CDT | 76°F | 15 mph S (180°) | 28 mph | 0% | 1% | Clear |
| Mon, 12 AM CDT | 76°F | 15 mph S (180°) | 28 mph | 1% | 2% | Clear |
| Mon, 1 AM CDT | 74°F | 15 mph S (180°) | 27 mph | 1% | 2% | Clear |
| Mon, 2 AM CDT | 74°F | 15 mph SSW (203°) | 27 mph | 1% | 7% | Mostly Clear |
| Mon, 3 AM CDT | 73°F | 15 mph SSW (203°) | 28 mph | 1% | 11% | Mostly Clear |
| Mon, 4 AM CDT | 73°F | 15 mph SSW (203°) | 27 mph | 1% | 15% | Mostly Clear |
| Mon, 5 AM CDT | 73°F | 15 mph SSW (203°) | 28 mph | 1% | 17% | Mostly Clear |
| Mon, 6 AM CDT | 72°F | 15 mph SSW (203°) | 28 mph | 1% | 15% | Sunny |
| Mon, 7 AM CDT | 72°F | 15 mph SSW (203°) | 27 mph | 0% | 21% | Sunny |
| Mon, 8 AM CDT | 71°F | 15 mph SSW (203°) | 28 mph | 0% | 19% | Sunny |
| Mon, 9 AM CDT | 73°F | 15 mph SW (225°) | 29 mph | 0% | 17% | Sunny |
| Mon, 10 AM CDT | 76°F | 15 mph SW (225°) | 28 mph | 0% | 12% | Sunny |
| Mon, 11 AM CDT | 81°F | 15 mph SW (225°) | 28 mph | 0% | 14% | Sunny |
| Mon, 12 PM CDT | 85°F | 15 mph WSW (248°) | 27 mph | 0% | 2% | Sunny |
| Mon, 1 PM CDT | 90°F | 15 mph WSW (248°) | 25 mph | 0% | 4% | Sunny |
| Mon, 2 PM CDT | 92°F | 15 mph SW (225°) | 24 mph | 0% | 5% | Sunny |
| Mon, 3 PM CDT | 93°F | 15 mph SW (225°) | 23 mph | 0% | 5% | Sunny |
Official National Weather Service hourly forecast. Showing 10 of 25 hours. Wind arrows point the way the wind is blowing; the compass point and degrees show where it comes from.
| Period | This Afternoon October 11, 2026 | Tonight October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 | Wednesday October 14, 2026 | Wednesday Night October 14, 2026 | Thursday October 15, 2026 | Thursday Night October 15, 2026 | Friday October 16, 2026 | Friday Night October 16, 2026 | Saturday October 17, 2026 | Saturday Night October 17, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 93° | 71° | 94° | 60° | 83° | 54° | 68° | 51° | 67° | 46° | 61° | 36° | 64° | 43° |
| Wind | SSW 15 to 20 mph | S 15 mph | SW 10 to 15 mph | SE 5 to 10 mph | NE 10 mph | NNE 10 mph | NE 10 to 15 mph | NE 10 mph | N 10 to 15 mph | NNW 10 to 15 mph | NNW 10 to 15 mph | NNW 0 to 10 mph | SSW 5 to 10 mph | S 10 mph |
| Gusts | 30 mph | 30 mph | 30 mph | 17 mph | 18 mph | 20 mph | 22 mph | 20 mph | 25 mph | 24 mph | 30 mph | 17 mph | 20 mph | 18 mph |
| Precip % | 0% | 1% | 1% | 7% | 10% | 53% | 53% | 73% | 73% | 14% | 5% | 2% | 2% | 3% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Kirwin Reservoir. Not available from a verified source for this lake.
Fair for fishing (69/100), from 5 available inputs. Supporting this: 0% chance of precipitation. Sky is partly cloudy (24% cloud cover). Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Fair for boating (65/100), from 4 available inputs. Supporting this: No active official alerts for this lake. 0% chance of precipitation. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Good for sailing (86/100), from 4 available inputs. Supporting this: Wind 20 mph from the SSW is workable but not ideal. No active official alerts for this lake. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Fair for kayaking (63/100), from 5 available inputs. Supporting this: No active official alerts for this lake. 0% chance of precipitation. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of KS Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Kirwin Reservoir is a versatile freshwater reservoir in KS, overseen by state and local natural resource agencies to provide safe, sustainable outdoor recreation for all visitors. The lake supports active watersports, pontoon cruising, and bank fishing along accessible public easements. Checking current weather alerts and wave forecasts ensures a safe trip.
Valid freshwater sport fishing license issued by Kansas Department of Wildlife and Parks (KDWP) is required for anglers age 16+. Digital license on mobile is accepted.
Current motorized watercraft registration mandatory. Practice Clean, Drain & Dry protocols: drain all livewells and inspect props before launching. Life jackets required for all passengers.
Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.
High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Walleye, White Crappie, Largemouth Bass, Channel Catfish. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.
Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.
Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.
Mild year-round outdoor climate. Uncrowded waters, active winter bass and crappie fishing, and open year-round boat launch access.
NWS API Web Service · License: U.S. Government work · Attribution: Data provided by the National Weather Service (api.weather.gov)
Updated
Scores are heuristics, not safety guarantees. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
All telemetry for Kirwin Reservoir is synchronized directly from authorized federal and state monitoring networks (USGS, NWS, NOAA, and state environmental authorities). Observations are strictly instrumented readings — unmonitored sensors are transparently disclosed rather than synthetic estimates.
Last source audit: Oct 11, 3:38 PM CDT