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Lake Winnisquam is one of the lakes LakeRadar tracks in New Hampshire. It covers roughly 4,264 surface acres (about 7 square miles). Nearby alternatives include Winnisquam Lake, Lake Winnipesaukee, and Squam 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 Lake Winnisquam.
Updated
No active alerts for this lake as of the last check (Oct 11, 1:09 PM EDT). Alerts are re-checked automatically; see the official source for updates.
Overall Good (87/100) across 4 activities. Best right now: Boating (95/100).
How the score is calculated →Best good fishing window, averaging 84/100 across these hours. Wind 5 mph from the south. Afternoon hours (17:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 54° | 54° | 54° | 54° | 54° | 54° | 54° | 52° | 52° | 51° | 50° | 50° | 50° | 50° | 49° | 49° | 49° | 47° | 48° | 49° | 52° | 56° | 61° | 65° |
| Wind (kts) | 4 | 4 | 4 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Direction | S | S | S | S | S | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW |
| Gusts (kts) | 10 | 10 | 12 | 12 | 8 | 6 | 7 | 2 | 10 | 8 | 4 | 5 | 7 | — | — | — | — | — | — | 2 | 2 | 4 | 4 | 8 |
| Precip % | 3% | 12% | 6% | 11% | 19% | 20% | 41% | 61% | 85% | 89% | 93% | 93% | 96% | 81% | 67% | 51% | 30% | 22% | 21% | 7% | 6% | 1% | 0% | 0% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 1 PM EDT | 54°F | 5 mph S (180°) | 12 mph | 3% | 89% | Cloudy |
| Sun, 2 PM EDT | 54°F | 5 mph S (180°) | 12 mph | 12% | 90% | Cloudy |
| Sun, 3 PM EDT | 54°F | 5 mph S (180°) | 14 mph | 6% | 93% | Cloudy |
| Sun, 4 PM EDT | 54°F | 5 mph S (180°) | 14 mph | 11% | 93% | Cloudy |
| Sun, 5 PM EDT | 54°F | 5 mph S (180°) | 9 mph | 19% | 94% | Isolated Rain Showers |
| Sun, 6 PM EDT | 54°F | Calm | 7 mph | 20% | 96% | Isolated Rain Showers |
| Sun, 7 PM EDT | 54°F | Calm | 8 mph | 41% | 97% | Chance Rain Showers |
| Sun, 8 PM EDT | 52°F | Calm | 2 mph | 61% | 93% | Rain Showers Likely |
| Sun, 9 PM EDT | 52°F | Calm | 12 mph | 85% | 98% | Rain Showers |
| Sun, 10 PM EDT | 51°F | Calm | 9 mph | 89% | 97% | Rain Showers |
| Sun, 11 PM EDT | 50°F | Calm | 5 mph | 93% | 96% | Rain Showers |
| Mon, 12 AM EDT | 50°F | Calm | 6 mph | 93% | 96% | Rain Showers |
| Mon, 1 AM EDT | 50°F | Calm | 8 mph | 96% | 98% | Rain Showers |
| Mon, 2 AM EDT | 50°F | Calm | 0 mph | 81% | 97% | Rain Showers |
| Mon, 3 AM EDT | 49°F | Calm | 0 mph | 67% | 97% | Rain Showers Likely |
| Mon, 4 AM EDT | 49°F | Calm | 0 mph | 51% | 96% | Chance Rain Showers |
| Mon, 5 AM EDT | 49°F | Calm | 0 mph | 30% | 92% | Chance Rain Showers |
| Mon, 6 AM EDT | 47°F | Calm | 0 mph | 22% | 89% | Slight Chance Rain Showers |
| Mon, 7 AM EDT | 48°F | Calm | 0 mph | 21% | 86% | Slight Chance Rain Showers |
| Mon, 8 AM EDT | 49°F | Calm | 2 mph | 7% | 72% | Mostly Cloudy |
| Mon, 9 AM EDT | 52°F | Calm | 2 mph | 6% | 42% | Mostly Sunny |
| Mon, 10 AM EDT | 56°F | Calm | 5 mph | 1% | 26% | Mostly Sunny |
| Mon, 11 AM EDT | 61°F | Calm | 5 mph | 0% | 22% | Sunny |
| Mon, 12 PM EDT | 65°F | 5 mph NW (315°) | 9 mph | 0% | 6% | Sunny |
| Mon, 1 PM EDT | 67°F | 5 mph NW (315°) | 9 mph | 0% | 3% | 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) | 54° | 47° | 69° | 45° | 58° | 50° | 63° | 42° | 58° | 38° | 58° | 41° | 53° | 34° |
| Wind | S 5 mph | 0 mph | NW 0 to 5 mph | N 0 to 5 mph | E 5 mph | S 5 mph | NW 5 to 10 mph | NW 5 to 10 mph | NW 10 mph | NW 0 to 5 mph | S 0 to 5 mph | SW 5 to 15 mph | NW 15 mph | NW 10 to 15 mph |
| Gusts | 14 mph | 12 mph | 14 mph | 9 mph | 12 mph | 14 mph | 20 mph | 17 mph | 20 mph | 14 mph | 14 mph | 25 mph | 29 mph | 25 mph |
| Precip % | 19% | 96% | 22% | 54% | 75% | 82% | 34% | 5% | 4% | 18% | 57% | 55% | 49% | 21% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Lake Winnisquam. Not available from a verified source for this lake.
Good for fishing (81/100), from 5 available inputs. Supporting this: Wind 5 mph from the south. 3% 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 (95/100), from 4 available inputs. Supporting this: Wind 5 mph from the south. No active official alerts for this lake. 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 (82/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Gusts exceed sustained wind by 7 mph, making the breeze puffy. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Excellent for kayaking (93/100), from 5 available inputs. Supporting this: Wind 5 mph from the south. Gusts to 12 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 NH Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Lake Winnisquam is a well-known freshwater lake in NH, providing refreshing open water and abundant outdoor recreation. Anglers value its seasonal bite while recreational boaters enjoy expansive open water corridors. Checking active weather advisories and water temperatures ensures a rewarding visit.
Valid freshwater sport fishing license issued by New Hampshire Fish and Game Department 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 Rainbow Trout, Brook Trout, Yellow Perch, Rock Bass. 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.
Northern cold winter conditions with freezing air temperatures and potential surface ice formation. Ramps and water systems may be winterized. Confirm open status before visiting.
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 Winnisquam 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, 1:09 PM EDT