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Castaic Lake is a 2,235-acre reservoir in northwestern Los Angeles County, California, featuring upper and lower lagoons renowned for power boating, wakeboarding, jet skiing, and trophy bass fishing.
Updated
Latest source update is older than expected. Use caution and check the official source.
The last automated check (Oct 9, 4:58 AM PDT) 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 Excellent (94/100) across 4 activities. Best right now: Boating (98/100).
How the score is calculated →Best excellent fishing window, averaging 94/100 across these hours. Wind 5 mph from the south-southwest. Dawn hours (07:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 68° | 67° | 65° | 75° | 78° | 81° | 85° | 87° | 89° | 89° | 87° | 85° | 82° | 76° | 68° | 67° | 67° | 65° | 65° | 65° | 64° | 64° | 63° | 63° |
| Wind (kts) | 4 | 4 | 4 | 4 | 4 | 4 | 9 | 9 | 9 | 13 | 13 | 13 | 9 | 9 | 9 | 9 | 9 | 9 | 4 | 4 | 4 | 4 | 4 | 4 |
| Direction | N | N | N | N | N | N | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | S | S | S | SW | SW | SW |
| Gusts (kts) | 4 | 4 | 4 | 4 | 4 | 4 | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 15 | 15 | 10 | 10 | 10 | 4 | 4 | 4 | 4 | 4 | 4 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 1% | 1% | 1% | 1% | 1% | 1% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 5 AM PDT | 68°F | 5 mph N (0°) | 5 mph | 0% | 2% | Clear |
| Fri, 6 AM PDT | 67°F | 5 mph N (0°) | 5 mph | 0% | 2% | Sunny |
| Fri, 7 AM PDT | 65°F | 5 mph N (0°) | 5 mph | 0% | 2% | Sunny |
| Fri, 8 AM PDT | 75°F | 5 mph N (0°) | 5 mph | 0% | 2% | Sunny |
| Fri, 9 AM PDT | 78°F | 5 mph N (0°) | 5 mph | 0% | 2% | Sunny |
| Fri, 10 AM PDT | 81°F | 5 mph N (0°) | 5 mph | 0% | 2% | Sunny |
| Fri, 11 AM PDT | 85°F | 10 mph SSW (203°) | 17 mph | 0% | 3% | Sunny |
| Fri, 12 PM PDT | 87°F | 10 mph SSW (203°) | 17 mph | 0% | 3% | Sunny |
| Fri, 1 PM PDT | 89°F | 10 mph SSW (203°) | 17 mph | 0% | 3% | Sunny |
| Fri, 2 PM PDT | 89°F | 15 mph SSW (203°) | 18 mph | 0% | 3% | Sunny |
| Fri, 3 PM PDT | 87°F | 15 mph SSW (203°) | 18 mph | 0% | 3% | Sunny |
| Fri, 4 PM PDT | 85°F | 15 mph SSW (203°) | 18 mph | 0% | 3% | Sunny |
| Fri, 5 PM PDT | 82°F | 10 mph SSW (203°) | 17 mph | 0% | 2% | Sunny |
| Fri, 6 PM PDT | 76°F | 10 mph SSW (203°) | 17 mph | 0% | 2% | Clear |
| Fri, 7 PM PDT | 68°F | 10 mph SSW (203°) | 17 mph | 0% | 2% | Clear |
| Fri, 8 PM PDT | 67°F | 10 mph SSW (203°) | 12 mph | 0% | 2% | Clear |
| Fri, 9 PM PDT | 67°F | 10 mph SSW (203°) | 12 mph | 0% | 2% | Clear |
| Fri, 10 PM PDT | 65°F | 10 mph SSW (203°) | 12 mph | 0% | 2% | Clear |
| Fri, 11 PM PDT | 65°F | 5 mph S (180°) | 5 mph | 1% | 23% | Mostly Clear |
| Sat, 12 AM PDT | 65°F | 5 mph S (180°) | 5 mph | 1% | 23% | Mostly Clear |
| Sat, 1 AM PDT | 64°F | 5 mph S (180°) | 5 mph | 1% | 23% | Mostly Clear |
| Sat, 2 AM PDT | 64°F | 5 mph SSW (203°) | 5 mph | 1% | 23% | Mostly Clear |
| Sat, 3 AM PDT | 63°F | 5 mph SSW (203°) | 5 mph | 1% | 23% | Mostly Clear |
| Sat, 4 AM PDT | 63°F | 5 mph SSW (203°) | 5 mph | 1% | 23% | Mostly Clear |
| Sat, 5 AM PDT | 66°F | 5 mph SSW (203°) | 7 mph | 1% | 79% | Mostly Cloudy |
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 9, 2026 | Friday October 9, 2026 | Friday Night October 9, 2026 | Saturday October 10, 2026 | Saturday Night October 10, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 65° | 89° | 63° | 78° | 61° | 72° | 50° | 65° | 46° | 70° | 48° | 77° | 54° | 82° |
| Wind | N 5 mph | SW 5 to 15 mph | SSW 5 to 10 mph | SSW 5 to 15 mph | SSW 5 to 15 mph | WNW 5 to 20 mph | SSW 5 to 20 mph | SSW 5 to 15 mph | WNW 0 to 10 mph | W 0 to 10 mph | NW 5 to 15 mph | N 5 to 10 mph | NNW 5 to 20 mph | NNE 5 to 20 mph |
| Gusts | 5 mph | 20 mph | 20 mph | 20 mph | 20 mph | 28 mph | 29 mph | 21 mph | 16 mph | 13 mph | 20 mph | 13 mph | 28 mph | 30 mph |
| Precip % | 0% | 0% | 1% | 16% | 39% | 39% | 65% | 65% | 27% | 6% | 1% | 1% | 0% | 0% |
| Forecast |
Excellent for fishing (91/100), from 5 available inputs. Supporting this: Wind 5 mph from the north. 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 (98/100), from 4 available inputs. Supporting this: Wind 5 mph from the north. Gusts to 5 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.
Good for sailing (87/100), from 4 available inputs. Supporting this: Gusts are within 0 mph of sustained wind, so the breeze is steady. No active official alerts for this lake. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Excellent for kayaking (98/100), from 5 available inputs. Supporting this: Wind 5 mph from the north. Gusts to 5 mph. 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 Los Angeles County Parks & Recreation. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Castaic Lake offers an inviting freshwater retreat in CA, administered by Los Angeles County Parks & Recreation. Its waters provide ample room for watersports, pontoon cruising, and quiet morning paddle trips along sheltered bays. Staying updated on real-time streamflow and meteorological conditions ensures a smooth trip on the water.
Valid freshwater sport fishing license issued by California Department of Fish and Wildlife (CDFW) is required for anglers age 16+. Digital license on mobile is accepted.
Mandatory Clean, Drain & Dry inspection. Out-of-area craft require on-site Aquatic Invasive Species (AIS Quagga/Zebra) inspection or decontamination before launch. USCG life jackets required for all.
Public shoreline and boating access managed by Los Angeles County Parks & Recreation. 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 Largemouth Bass, Striped Bass, Rainbow Trout. 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.
No external source rows are cited by the data currently shown on this page.
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 Castaic Lake 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 9, 5:29 AM PDT