Loading page content…
Loading page content…
Loading lake conditions…
Grand Bayou Reservoir sits in Louisiana and is classified as a reservoir. The water surface spans about 2,600 acres, making it a mid-sized body of water. Nearby alternatives include Caddo Lake (LA), Bodcau Reservoir, and Lake Claiborne. Below you will find an hourly and 7-day forecast, wind and gust outlook, and activity scores for boating, paddling, and swimming. This page combines the live forecast, wind, and conditions for Grand Bayou Reservoir so you can plan a visit.
Updated
Latest source update is older than expected. Use caution and check the official source.
The last automated check (Oct 11, 3:21 AM CDT) found no active alerts for this lake, but that check is older than LakeRadar's alert freshness window, so the current alert status could not be confirmed.
Confirm before heading out: official alerts for this area or weather.gov/alerts. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
Overall Good (86/100) across 4 activities. Best right now: Boating (97/100).
How the score is calculated →Best excellent fishing window, averaging 91/100 across these hours. Wind 5 mph from the south. Dusk hours (19:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 61° | 60° | 59° | 60° | 66° | 74° | 78° | 81° | 85° | 87° | 89° | 90° | 91° | 88° | 84° | 81° | 76° | 75° | 73° | 72° | 70° | 68° | 67° | 65° |
| Wind (kts) | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Direction | — | — | — | — | — | SW | SW | SW | SW | SW | SW | SW | — | — | — | — | — | — | — | — | — | — | — | — |
| Gusts (kts) | 9 | 8 | 7 | 8 | 7 | 9 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 6 | 7 | 7 | 7 | 6 | 6 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 5 AM CDT | 61°F | Calm | 10 mph | 0% | 1% | Clear |
| Sun, 6 AM CDT | 60°F | Calm | 9 mph | 0% | 2% | Sunny |
| Sun, 7 AM CDT | 59°F | Calm | 8 mph | 0% | 3% | Sunny |
| Sun, 8 AM CDT | 60°F | Calm | 9 mph | 0% | 7% | Sunny |
| Sun, 9 AM CDT | 66°F | Calm | 8 mph | 0% | 14% | Sunny |
| Sun, 10 AM CDT | 74°F | 5 mph SW (225°) | 10 mph | 0% | 12% | Sunny |
| Sun, 11 AM CDT | 78°F | 5 mph SW (225°) | 10 mph | 0% | 15% | Sunny |
| Sun, 12 PM CDT | 81°F | 5 mph SW (225°) | 10 mph | 0% | 18% | Sunny |
| Sun, 1 PM CDT | 85°F | 5 mph SW (225°) | 10 mph | 0% | 7% | Sunny |
| Sun, 2 PM CDT | 87°F | 5 mph SW (225°) | 9 mph | 0% | 18% | Sunny |
| Sun, 3 PM CDT | 89°F | 5 mph SW (225°) | 9 mph | 0% | 28% | Mostly Sunny |
| Sun, 4 PM CDT | 90°F | 5 mph SW (225°) | 8 mph | 0% | 23% | Sunny |
| Sun, 5 PM CDT | 91°F | Calm | 8 mph | 0% | 36% | Mostly Sunny |
| Sun, 6 PM CDT | 88°F | Calm | 7 mph | 0% | 25% | Mostly Clear |
| Sun, 7 PM CDT | 84°F | Calm | 7 mph | 0% | 31% | Partly Cloudy |
| Sun, 8 PM CDT | 81°F | Calm | 6 mph | 0% | 37% | Partly Cloudy |
| Sun, 9 PM CDT | 76°F | Calm | 6 mph | 0% | 22% | Mostly Clear |
| Sun, 10 PM CDT | 75°F | Calm | 6 mph | 0% | 13% | Mostly Clear |
| Sun, 11 PM CDT | 73°F | Calm | 7 mph | 0% | 12% | Mostly Clear |
| Mon, 12 AM CDT | 72°F | Calm | 8 mph | 0% | 7% | Mostly Clear |
| Mon, 1 AM CDT | 70°F | Calm | 8 mph | 0% | 6% | Mostly Clear |
| Mon, 2 AM CDT | 68°F | Calm | 8 mph | 0% | 5% | Clear |
| Mon, 3 AM CDT | 67°F | Calm | 7 mph | 0% | 7% | Mostly Clear |
| Mon, 4 AM CDT | 65°F | Calm | 7 mph | 0% | 17% | Mostly Clear |
| Mon, 5 AM CDT | 64°F | Calm | 6 mph | 0% | 1% | Clear |
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 | Overnight October 11, 2026 | Sunday October 11, 2026 | Sunday Night 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 59° | 91° | 63° | 92° | 70° | 93° | 72° | 93° | 68° | 92° | 68° | 87° | 60° | 77° |
| Wind | 0 mph | SW 0 to 5 mph | 0 mph | S 0 to 5 mph | S 0 to 5 mph | S 0 to 5 mph | S 0 to 5 mph | S 0 to 5 mph | S 0 to 5 mph | S 0 to 5 mph | 0 mph | NW 0 to 15 mph | N 5 to 15 mph | N 10 to 15 mph |
| Gusts | 10 mph | 10 mph | 8 mph | 14 mph | 10 mph | 10 mph | 12 mph | 12 mph | 10 mph | 9 mph | 8 mph | 18 mph | 21 mph | 23 mph |
| Precip % | 0% | 0% | 0% | 0% | 0% | 26% | 26% | 12% | 12% | 3% | 3% | 11% | 11% | 1% |
| Forecast |
Good for fishing (87/100), from 5 available inputs. Supporting this: Wind 0 mph from the south-southwest. 0% chance of precipitation. 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.
Excellent for boating (97/100), from 4 available inputs. Supporting this: Wind 0 mph from the south-southwest. Gusts to 10 mph. 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.
Fair for sailing (55/100), from 4 available inputs. Supporting this: No active official alerts for this lake. 0% chance of precipitation. Working against it: Wind 0 mph is light; expect limited sailing. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Excellent for kayaking (97/100), from 5 available inputs. Supporting this: Wind 0 mph from the south-southwest. Gusts to 10 mph. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
Loading interactive map…
Individual boat ramp GPS coordinates are maintained under the jurisdiction of LA Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Grand Bayou Reservoir is a premier freshwater reservoir in LA, offering reliable water access and productive fishing throughout the spring, summer, and fall. The lake's surface character changes with shifting winds, offering glassy morning conditions for paddlers and active afternoon breezes for sailing. Public recreation is overseen by state and local natural resource agencies.
Valid freshwater sport fishing license issued by Louisiana Department of Wildlife and Fisheries (LDWF) is required for anglers age 18+. 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 Blue Catfish, Bluegill, Paddlefish, Flathead 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 Grand Bayou 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, 5:18 AM CDT