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Diamond Valley Lake is a 4,500-acre man-made reservoir near Hemet in Riverside County, California. Known for exceptional water quality, it is one of Southern California's leading bass and trout fisheries.
Updated
No active alerts for this lake as of the last check (Oct 11, 4:16 PM PDT). Alerts are re-checked automatically; see the official source for updates.
Overall Fair (70/100) across 4 activities. Best right now: Sailing (83/100).
How the score is calculated →Best good fishing window, averaging 81/100 across these hours. Wind 10 mph from the south. Dusk hours (18:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 64° | 62° | 62° | 61° | 62° | 61° | 60° | 60° | 59° | 59° | 59° | 58° | 57° | 57° | 56° | 54° | 56° | 56° | 57° | 58° | 59° | 60° | 61° | 60° |
| Wind (kts) | 13 | 13 | 9 | 9 | 9 | 13 | 17 | 13 | 13 | 13 | 13 | 9 | 9 | 9 | 4 | 9 | 9 | 9 | 9 | 13 | 13 | 13 | 13 | 13 |
| Direction | SW | SW | S | S | S | S | S | S | S | S | S | S | S | S | SW | S | SW | SW | SW | SW | SW | SW | SW | SW |
| Gusts (kts) | 21 | 19 | 17 | 17 | 17 | 22 | 26 | 23 | 22 | 19 | 18 | 15 | 13 | 13 | 11 | 12 | 13 | 13 | 18 | 20 | 20 | 19 | 20 | 20 |
| Precip % | 63% | 43% | 43% | 43% | 43% | 43% | 43% | 67% | 67% | 67% | 67% | 67% | 67% | 59% | 59% | 59% | 59% | 59% | 59% | 64% | 64% | 64% | 64% | 64% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 4 PM PDT | 64°F | 15 mph SW (225°) | 24 mph | 63% | 82% | Rain Showers Likely |
| Sun, 5 PM PDT | 62°F | 15 mph SW (225°) | 22 mph | 43% | 68% | Chance Rain Showers |
| Sun, 6 PM PDT | 62°F | 10 mph S (180°) | 20 mph | 43% | 68% | Chance Rain Showers |
| Sun, 7 PM PDT | 61°F | 10 mph S (180°) | 20 mph | 43% | 68% | Chance Rain Showers |
| Sun, 8 PM PDT | 62°F | 10 mph S (180°) | 20 mph | 43% | 72% | Chance Rain Showers |
| Sun, 9 PM PDT | 61°F | 15 mph S (180°) | 25 mph | 43% | 72% | Chance Rain Showers |
| Sun, 10 PM PDT | 60°F | 20 mph S (180°) | 30 mph | 43% | 72% | Chance Rain Showers |
| Sun, 11 PM PDT | 60°F | 15 mph S (180°) | 27 mph | 67% | 80% | Rain Showers |
| Mon, 12 AM PDT | 59°F | 15 mph S (180°) | 25 mph | 67% | 80% | Rain Showers |
| Mon, 1 AM PDT | 59°F | 15 mph S (180°) | 22 mph | 67% | 80% | Rain Showers |
| Mon, 2 AM PDT | 59°F | 15 mph S (180°) | 21 mph | 67% | 80% | Rain Showers |
| Mon, 3 AM PDT | 58°F | 10 mph S (180°) | 17 mph | 67% | 80% | Rain Showers |
| Mon, 4 AM PDT | 57°F | 10 mph S (180°) | 15 mph | 67% | 80% | Rain Showers |
| Mon, 5 AM PDT | 57°F | 10 mph S (180°) | 15 mph | 59% | 77% | Rain Showers |
| Mon, 6 AM PDT | 56°F | 5 mph SW (225°) | 13 mph | 59% | 77% | Rain Showers |
| Mon, 7 AM PDT | 54°F | 10 mph S (180°) | 14 mph | 59% | 77% | Rain Showers |
| Mon, 8 AM PDT | 56°F | 10 mph SW (225°) | 15 mph | 59% | 78% | Rain Showers |
| Mon, 9 AM PDT | 56°F | 10 mph SW (225°) | 15 mph | 59% | 78% | Rain Showers |
| Mon, 10 AM PDT | 57°F | 10 mph SW (225°) | 21 mph | 59% | 78% | Rain Showers |
| Mon, 11 AM PDT | 58°F | 15 mph SW (225°) | 23 mph | 64% | 77% | Rain Showers Likely |
| Mon, 12 PM PDT | 59°F | 15 mph SW (225°) | 23 mph | 64% | 77% | Rain Showers Likely |
| Mon, 1 PM PDT | 60°F | 15 mph SW (225°) | 22 mph | 64% | 77% | Rain Showers Likely |
| Mon, 2 PM PDT | 61°F | 15 mph SW (225°) | 23 mph | 64% | 77% | Rain Showers Likely |
| Mon, 3 PM PDT | 60°F | 15 mph SW (225°) | 23 mph | 64% | 77% | Rain Showers Likely |
| Mon, 4 PM PDT | 60°F | 15 mph SW (225°) | 23 mph | 64% | 77% | Rain Showers Likely |
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) | 66° | 54° | 63° | 49° | 71° | 50° | 78° | 54° | 83° | 59° | 84° | 63° | 83° | 60° |
| Wind | SW 15 to 20 mph | S 10 to 20 mph | SW 5 to 15 mph | S 0 to 10 mph | SE 0 to 5 mph | S 0 to 15 mph | N 0 to 5 mph | E 0 to 25 mph | NE 5 to 10 mph | NE 5 to 30 mph | NE 15 to 25 mph | NE 15 to 25 mph | E 15 to 20 mph | E 10 to 25 mph |
| Gusts | 35 mph | 30 mph | 25 mph | 17 mph | 8 mph | 22 mph | 12 mph | 39 mph | 20 mph | 45 mph | 36 mph | 40 mph | 31 mph | 35 mph |
| Precip % | 63% | 67% | 64% | 45% | 1% | 0% | 0% | 0% | 0% | 0% | 1% | 1% | 1% | 0% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Diamond Valley Lake. Not available from a verified source for this lake.
Fair for fishing (68/100), from 5 available inputs. Supporting this: Afternoon hours (16:00 local). Sky is cloudy (82% cloud cover). Working against it: 63% chance of precipitation is likely. 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 (66/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Working against it: 63% chance of precipitation is likely. 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 (83/100), from 4 available inputs. Supporting this: Wind 15 mph from the SW is in the preferred sailing range. No active official alerts for this lake. Working against it: 63% chance of precipitation is likely. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Fair for kayaking (67/100), from 5 available inputs. Supporting this: No active official alerts for this lake. Air temperature 64°F. Working against it: 63% chance of precipitation is likely. 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 Metropolitan Water District of Southern California. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Diamond Valley Lake is an established freshwater reservoir in CA that delivers excellent freshwater boating, fishing, and outdoor recreation. The waterbody's bathymetry and shoreline vegetation provide productive habitat for gamefish year-round. Public recreation areas and boat launch facilities are administered by Metropolitan Water District of Southern California.
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 Metropolitan Water District of Southern California. 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 Rainbow Trout, Largemouth Bass, Common Carp, 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.
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 Diamond Valley 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 11, 4:16 PM PDT