South Georgian Bay (45143) — Live Marine Conditions & Buoy Data
NOAA station 45143, South Georgian Bay, reports real-time marine conditions from 44.940°N, 80.627°W in Lake Huron. Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Current conditions at South Georgian Bay
As of October 19, 2026 at 19:00 UTC, South Georgian Bay (45143) is reporting water temperature 57°F, air temperature 58°F, wave height 1.3 ft at a 3-second dominant period, wind from the W at 7 mph gusting 9 mph, and barometric pressure 30.37 inHg.
- Water temperature
- 57°F
- Air temperature
- 58°F
- Wave height
- 1.3 ft @ 3 s
- Wind
- W 7 mph (gust 9)
- Barometric pressure
- 30.37 inHg
Observed October 19, 2026 at 19:00 UTC from NOAA NDBC station 45143. Readings update about every 10 minutes.
What NOAA buoy 45143 measures
As a NOAA meteorological station, 45143 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 Lake Huron
Lake Huron pairs a big open main basin with the sheltered waters of Georgian Bay and the North Channel, so conditions vary a lot with where you are. The open lake builds steep, short-period seas on a sustained blow — check the buoy nearest your water and mind the wind direction.
Frequently asked questions
- What is the water temperature at South Georgian Bay?
- Sea surface temperature at South Georgian Bay was 57°F. Measured October 19, 2026 at 19:00 UTC by NOAA station 45143 (South Georgian Bay). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at South Georgian Bay?
- Air temperature at South Georgian Bay was 58°F. Measured October 19, 2026 at 19:00 UTC by NOAA station 45143 (South Georgian Bay).
- What is the wind doing at South Georgian Bay?
- Wind at South Georgian Bay was from the W at 7 mph, with peak gusts to 9 mph. Measured October 19, 2026 at 19:00 UTC by NOAA station 45143 (South Georgian Bay). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- How big are the waves at South Georgian Bay?
- Significant wave height at South Georgian Bay was 1.3 ft, with a 3-second dominant period. Measured October 19, 2026 at 19:00 UTC by NOAA station 45143 (South Georgian Bay). Significant wave height is the average of the highest one-third of waves — individual waves can be larger.
- What is the barometric pressure at South Georgian Bay?
- Sea-level pressure at South Georgian Bay was 30.37 inHg (1028.6 hPa). Measured October 19, 2026 at 19:00 UTC by NOAA station 45143 (South Georgian Bay). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy 45143 located?
- South Georgian Bay (45143) reports from 44.940°N, 80.627°W in Lake Huron.
- How often is NOAA buoy 45143 updated?
- Station 45143 typically reports new observations about every 10 minutes. Big Buoy refreshes continuously so you always see the latest readings, alongside a solunar table for the area.
- What does NOAA buoy 45143 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for South Georgian Bay, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for South Georgian Bay 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.