Lake Simcoe (45151) — Live Marine Conditions & Buoy Data
NOAA station 45151, Lake Simcoe, reports real-time marine conditions from 44.500°N, 79.370°W in the western North Atlantic. Readings refresh roughly every 10 minutes, and Big Buoy adds 7-day tide predictions, a solunar table, and a multi-day weather outlook for the area.
Lake Ontario Marine Conditions — Lake Simcoe is one of several stations in Lake Ontario. See live tides, buoy data, and solunar for the whole area.
Current conditions at Lake Simcoe
As of October 19, 2026 at 19:00 UTC, Lake Simcoe (45151) is reporting water temperature 58°F, air temperature 59°F, wave height 0.3 ft at a 2-second dominant period, wind from the SE at 4 mph, and barometric pressure 30.37 inHg.
- Water temperature
- 58°F
- Air temperature
- 59°F
- Wave height
- 0.3 ft @ 2 s
- Wind
- SE 4 mph
- Barometric pressure
- 30.37 inHg
Observed October 19, 2026 at 19:00 UTC from NOAA NDBC station 45151. Readings update about every 10 minutes.
What NOAA buoy 45151 measures
As a NOAA meteorological station, 45151 reports wind speed, gusts and direction, barometric pressure, air and water temperature, and — where wave sensors are fitted — significant wave height, swell period, and wave direction.
What to watch in the western North Atlantic
Conditions along the Atlantic coast are driven by swell direction and the shifting western edge of the Gulf Stream. Northeast winds against an outgoing tide stack up steep, dangerous seas at inlets, and water temperature can change 10–20°F over just a few miles as the Gulf Stream boundary moves.
Frequently asked questions
- What is the water temperature at Lake Simcoe?
- Sea surface temperature at Lake Simcoe was 58°F. Measured October 19, 2026 at 19:00 UTC by NOAA station 45151 (Lake Simcoe). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at Lake Simcoe?
- Air temperature at Lake Simcoe was 59°F. Measured October 19, 2026 at 19:00 UTC by NOAA station 45151 (Lake Simcoe).
- What is the wind doing at Lake Simcoe?
- Wind at Lake Simcoe was from the SE at 4 mph. Measured October 19, 2026 at 19:00 UTC by NOAA station 45151 (Lake Simcoe). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- What is the barometric pressure at Lake Simcoe?
- Sea-level pressure at Lake Simcoe was 30.37 inHg (1028.3 hPa). Measured October 19, 2026 at 19:00 UTC by NOAA station 45151 (Lake Simcoe). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy 45151 located?
- Lake Simcoe (45151) reports from 44.500°N, 79.370°W in the western North Atlantic.
- How often is NOAA buoy 45151 updated?
- Station 45151 typically reports new observations about every 10 minutes. Big Buoy refreshes continuously so you always see the latest readings, alongside 7-day tide predictions and a solunar table for the area.
- What does NOAA buoy 45151 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Lake Simcoe, plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Lake Simcoe and every other NOAA buoy is free with no account required. Big Buoy Pro adds the Wind Tab, the Depth Chart, satellite overlays (sea surface temp, chlorophyll, currents), 16-day forecasts, and forecast model switching.