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In New Jersey, Lake Atsion is a lake used for time on and around the water. At around 100 acres, it is a modest waterbody. The deepest point reaches about 12 feet, and the surface sits near 40 feet above sea level. Fish documented in the area include White Crappie, Chain Pickerel, Bluegill, and Pumpkinseed Sunfish. Water data on this page comes from a mapped monitoring station near the lake. Other waters in the region include Union Lake and Swimming River Reservoir. For this location, LakeRadar tracks an hourly and 7-day forecast, wind and gust outlook, water readings, fishing conditions, and activity scores for boating, paddling, and swimming. Use the conditions and forecast on this page to decide when to go boating, fishing, or paddling at Lake Atsion.
Updated
No active alerts for this lake as of the last check (Oct 9, 12:31 PM EDT). Alerts are re-checked automatically; see the official source for updates.
Overall Good (86/100) across 4 activities. Best right now: Sailing (93/100).
How the score is calculated →Best excellent fishing window, averaging 93/100 across these hours. Wind 5 mph from the north. Dawn hours (06:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 68° | 70° | 72° | 72° | 72° | 71° | 68° | 64° | 61° | 59° | 57° | 56° | 55° | 54° | 53° | 52° | 51° | 50° | 50° | 50° | 52° | 56° | 62° | 66° |
| Wind (kts) | 9 | 9 | 13 | 9 | 9 | 9 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Direction | W | W | W | W | W | NW | NW | W | W | W | W | W | W | W | W | NW | NW | N | N | N | N | NE | NE | NE |
| Gusts (kts) | 15 | 18 | 20 | 19 | 16 | 14 | 11 | 11 | 9 | 7 | 5 | 5 | 5 | 5 | 6 | 5 | 5 | 6 | 6 | 7 | 9 | 9 | 9 | 9 |
| 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 |
|---|---|---|---|---|---|---|
| Fri, 12 PM EDT | 68°F | 10 mph W (270°) | 17 mph | 0% | 48% | Mostly Sunny |
| Fri, 1 PM EDT | 70°F | 10 mph W (270°) | 21 mph | 0% | 49% | Mostly Sunny |
| Fri, 2 PM EDT | 72°F | 15 mph W (270°) | 23 mph | 0% | 50% | Mostly Sunny |
| Fri, 3 PM EDT | 72°F | 10 mph W (270°) | 22 mph | 0% | 55% | Partly Sunny |
| Fri, 4 PM EDT | 72°F | 10 mph W (270°) | 18 mph | 0% | 63% | Partly Sunny |
| Fri, 5 PM EDT | 71°F | 10 mph NW (315°) | 16 mph | 0% | 62% | Partly Sunny |
| Fri, 6 PM EDT | 68°F | 5 mph NW (315°) | 13 mph | 0% | 62% | Mostly Cloudy |
| Fri, 7 PM EDT | 64°F | 5 mph W (270°) | 13 mph | 0% | 69% | Mostly Cloudy |
| Fri, 8 PM EDT | 61°F | 5 mph W (270°) | 10 mph | 0% | 69% | Mostly Cloudy |
| Fri, 9 PM EDT | 59°F | 5 mph W (270°) | 8 mph | 0% | 70% | Mostly Cloudy |
| Fri, 10 PM EDT | 57°F | 5 mph W (270°) | 6 mph | 0% | 78% | Mostly Cloudy |
| Fri, 11 PM EDT | 56°F | 5 mph W (270°) | 6 mph | 0% | 76% | Mostly Cloudy |
| Sat, 12 AM EDT | 55°F | 5 mph W (270°) | 6 mph | 0% | 71% | Mostly Cloudy |
| Sat, 1 AM EDT | 54°F | 5 mph W (270°) | 6 mph | 0% | 75% | Mostly Cloudy |
| Sat, 2 AM EDT | 53°F | 5 mph W (270°) | 7 mph | 0% | 60% | Mostly Cloudy |
| Sat, 3 AM EDT | 52°F | 5 mph NW (315°) | 6 mph | 0% | 55% | Mostly Cloudy |
| Sat, 4 AM EDT | 51°F | 5 mph NW (315°) | 6 mph | 0% | 53% | Mostly Cloudy |
| Sat, 5 AM EDT | 50°F | 5 mph N (0°) | 7 mph | 0% | 49% | Partly Cloudy |
| Sat, 6 AM EDT | 50°F | 5 mph N (0°) | 7 mph | 0% | 57% | Partly Sunny |
| Sat, 7 AM EDT | 50°F | 5 mph N (0°) | 8 mph | 0% | 60% | Partly Sunny |
| Sat, 8 AM EDT | 52°F | 5 mph N (0°) | 10 mph | 0% | 56% | Partly Sunny |
| Sat, 9 AM EDT | 56°F | 5 mph NE (45°) | 10 mph | 0% | 57% | Partly Sunny |
| Sat, 10 AM EDT | 62°F | 5 mph NE (45°) | 10 mph | 0% | 56% | Partly Sunny |
| Sat, 11 AM EDT | 66°F | 5 mph NE (45°) | 10 mph | 0% | 60% | Partly Sunny |
| Sat, 12 PM EDT | 68°F | 5 mph E (90°) | 10 mph | 0% | 59% | Partly 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 | Today October 9, 2026 | Tonight 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 | Thursday Night October 15, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 73° | 50° | 72° | 57° | 68° | 62° | 71° | 58° | 75° | 56° | 68° | 51° | 66° | 53° |
| Wind | W 5 to 15 mph | W 5 mph | NE 5 to 10 mph | E 5 mph | E 5 to 10 mph | E 0 to 10 mph | N 5 mph | NW 0 to 5 mph | W 0 to 5 mph | W 5 mph | NW 5 mph | N 0 to 5 mph | NW 0 to 5 mph | 0 mph |
| Gusts | 23 mph | 13 mph | 14 mph | 13 mph | 16 mph | 16 mph | 12 mph | 7 mph | 13 mph | 15 mph | 16 mph | 13 mph | 10 mph | 7 mph |
| Precip % | 0% | 0% | 0% | 13% | 95% | 95% | 57% | 5% | 12% | 19% | 10% | 6% | 3% | 9% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Lake Atsion. Not available from a verified source for this lake.
Nearby river temperature: 62.2°F at Southwest Branch Rancocas Creek at Medford NJ (12.4 mi away) · Oct 9, 4:30 PM UTC
Good for fishing (85/100), from 5 available inputs. Supporting this: Wind 10 mph from the west. 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.
Good for boating (85/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Wind 10 mph from the west. 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.
Excellent for sailing (93/100), from 4 available inputs. Supporting this: Wind 10 mph from the W is in the preferred sailing range. No active official alerts for this lake. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Good for kayaking (85/100), from 5 available inputs. Supporting this: Wind 10 mph from the west. No active official alerts for this lake. 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 New Jersey Division of Parks and Forestry. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
A staple of freshwater recreation in NJ, Lake Atsion draws paddlers, powerboaters, and anglers seeking time on the water. The surrounding geography creates dynamic wind patterns and diverse aquatic structure suitable for sport fishing. Watercraft access and shoreline recreation areas are administered by New Jersey Division of Parks and Forestry.
Valid freshwater sport fishing license issued by New Jersey Division of Fish and Wildlife 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 New Jersey Division of Parks and Forestry. Verify seasonal gate hours, launch fees, and parking rules before travel.
Low-wake cruising, electric-troll fishing craft, and quiet-water exploration. Target gamefish include White Crappie, Chain Pickerel, Bluegill, Pumpkinseed Sunfish. 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 Lake Atsion 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, 12:43 PM EDT