Mattawa, Ontario Weather
Mattawa, 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 Mattawa in Nipissing.
Marine forecast and fishing conditions near Mattawa.
Flight conditions near Mattawa. Data source: locating…
About Mattawa, Ontario
Mattawa is a town in Nipissing, Ontario, Canada. It has a population of approximately 1,881. Mattawa is located at 46.3129°N, 78.7097°W. It observes Eastern Time (UTC−5 / −4). Postal code area: P0H.
Mattawa occupies a singular position where the land rises to meet the sky near the Colline Nedeous, anchored firmly by the presence of the Mattawa River. It lies 54.1 km south-south-east of Témiscaming, ON (from Témiscaming, ON: bearing 147°T), and is situated 14.3 km south-south-east of Smith's Landing. The water of the Mattawa River carries a deep, dark clarity that reflects the surrounding hills, mirroring the shifting clouds as they drift over the heights of the Colline Nedeous. Beyond the immediate banks, the terrain holds a quiet intensity, with Boom Lake resting in the nearby woods as a hidden, still eye amidst the dense timber. When the light of dusk descends, it catches the surface of the river, turning the moving currents into a ribbon of polished silver that defines the mood of the landscape. Historically, Mattawa served as a vital junction for those navigating the waterways, drawing its character from the demanding work of moving goods through the wilderness. The economy has long relied upon the bounty of the timber stands, sustaining a working culture that values the steady, persistent labor required by the forest industry. Today, Mattawa maintains this connection to the land, where the sound of the river acts as a constant companion to the residents who move through their days with a focus on practical, grounded endurance. The cultural identity of Mattawa draws strength from its long history as a meeting point, fostering a spirit of resilience that remains visible in the local traditions and the way people gather. Landmarks stand as quiet reminders of the past, marking the routes and gathering spots that have supported life here for generations. The atmosphere in Mattawa feels sharpened by the crisp air, inviting a sense of clarity that is found only in places where the horizon is defined by the silhouette of the Colline Nedeous and the persistent, flowing edge of the water.
Live animated radar for Mattawa 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 | Mattawa, Nipissing, Ontario |
| Coordinates | 46.31294°N, 78.70973°W |
| Timezone | Eastern Time (UTC−5 / −4) |
| Postal FSA | P0H |
| 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 Mattawa, Ontario Weather Page
This page provides live weather conditions and forecasts for Mattawa, 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 Mattawa includes coordinates 46.312940°N, 78.709730°W, situated in Nipissing. Postal FSA: P0H. 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.