Sarnia, Ontario Weather
Sarnia, Ontario — live current conditions, hourly and 7-day forecasts, ECCC alerts, aviation weather, radar and satellite imagery, marine and fishing conditions with a solunar forecast for Sarnia in Lambton.
Marine forecast and fishing conditions near Sarnia.
Flight conditions near Sarnia. Data source: locating…
About Sarnia, Ontario
Sarnia is a city in Lambton, Ontario, Canada. It has a population of 72,047. Sarnia is located at 42.9814°N, 82.3178°W. It observes Eastern Time (UTC−5 / −4). Postal code area: N7W.
Sarnia rests with a quiet, persistent presence upon the expansive shore of Lake Huron. It lies 62.8 km north-north-west of Chatham-Kent, ON (from Chatham-Kent, ON: bearing 346°T), and is situated 7.7 km south-west of Brights Grove. The land here carries a particular sharpness, where the horizon meets the water in a long, unbroken line that seems to hold the light of the setting sun long after the day has begun to fade. Just a short distance away, the Wawanosh Wetlands Conservation Area offers a retreat into a quieter, reed-lined silence, while the Bonnie Doon Creek winds its way through the nearby landscape, marking the terrain with subtle, earth-bound shifts in elevation. The air in Sarnia often tastes of the lake—a crisp, cool dampness that clings to the skin even when the streets are dry and the sun is high. The history of Sarnia is anchored in the movement of goods and the industry that grew alongside its position on the water. Large-scale infrastructure and manufacturing have long defined the economic engine of Sarnia, creating a skyline that is punctuated by the vertical silhouettes of refineries and the steady, purposeful hum of commerce. This industrial character is not merely a matter of economics; it is a weight that shapes the way the morning light catches the steel and concrete, lending the docks and transit corridors a stark, functional beauty. Life here is defined by the logistics of the border and the constant, rhythmic passage of vessels, a cycle of movement that provides a steady pulse for those who live and work within the frame of its busy port. Cultural life in Sarnia finds its expression in the resilience of its people and the quietude of its public spaces, where the legacy of the past lingers in the architecture and the local traditions of the waterfront. The community maintains a steadfast identity, one that values the practicalities of the northern climate and the seasonal shifts of the Great Lakes. Among those born in the region, individuals like the astronaut Chris Hadfield have brought a sense of vast, skyward ambition to the local consciousness, reflecting the same expansive spirit found in the view across the water. Sarnia remains a place of distinct clarity, where the intersection of industry and natural geography creates a singular, grounded experience for those who walk its streets and observe the changing moods of the lake.
Live animated radar for Sarnia and surroundings — RainViewer.
NOAA GOES-19 GEOCOLOR — Canada / Northern U.S. sector. Auto-refreshes every 10 minutes on page reload. Frames the whole country from Newfoundland to the BC coast, plus adjacent Pacific and Atlantic storm approaches.
Source: NOAA/NESDIS GOES-19 · Public domain · Sector code can (Canada / Northern U.S.) · Auto-updates on page reload
| Location | Sarnia, Lambton, Ontario |
| Coordinates | 42.981389°N, 82.317778°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | N7W |
| Area Code | 226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647, 705, 742, 807, 905 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), Environment and Climate Change Canada |
About This Sarnia, Ontario Weather Page
This page provides live weather conditions and forecasts for Sarnia, Ontario, including current conditions, a 24-hour hourly forecast, 7-day outlook, ECCC extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modelled estimate shown when no station is in range), precipitation radar and NOAA GOES satellite imagery. Additional sections may include marine and fishing conditions with a solunar forecast for coastal localities, and soil temperature, crop weather and live Water Survey of Canada river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Sarnia includes coordinates 42.981389°N, 82.317778°W, situated in Lambton. Postal FSA: N7W. Telephone area code: 226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647, 705, 742, 807, 905. Timezone: Eastern Time (UTC−5 / −4).
Weather data is sourced from Environment and Climate Change Canada (ECCC) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov, with a modelled estimate used where no nearby reporting station is available. River and stream data is sourced from Water Survey of Canada (WSC) via the ECCC GeoMet realtime hydrometric feed. Marine and solunar data are modelled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-19 and is public domain.