Ottawa Klima and Average Vær
Klima of Ottawa: average temperatures, rainfall and seasons month by month.
Klima in Ottawa month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Måned | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januar | -5° | -13° | 61 mm | ★★☆☆☆ |
| februar | -3° | -13° | 49 mm | ★★☆☆☆ |
| mars | 5° | -6° | 79 mm | ★★☆☆☆ |
| april | 11° | 1° | 128 mm | ★★★☆☆ |
| mai | 19° | 9° | 87 mm | ★★★★☆ |
| juni | 24° | 15° | 136 mm | ★★★★☆ |
| juli | 27° | 18° | 113 mm | ★★★★☆ |
| august | 25° | 16° | 150 mm | ★★★★☆ |
| september | 22° | 13° | 38 mm | ★★★★☆ |
| oktober | 15° | 7° | 74 mm | ★★★★☆ |
| november | 5° | -1° | 60 mm | ★★★☆☆ |
| desember | -2° | -9° | 90 mm | ★★☆☆☆ |
Klima type: Subarctic. Kilde: Open-Meteo archive (ERA5).
Recent extremes in Ottawa
Høyest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Ottawa compares med nearby places
Annual averages, and the difference against Ottawa.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| mant-Tremblant National Park | 144 km | 4°C | 3°C cooler | 1298 mm |
| mantreal-Trudeau International Airport | 153 km | 8°C | +1°C warmer | 1094 mm |
| mantreal | 166 km | 8°C | +1°C warmer | 1076 mm |
| Algonquin Provincial Park | 214 km | 6°C | 2°C cooler | 894 mm |
| Burlington | 222 km | 9°C | +2°C warmer | 1157 mm |
Beste tid å besøke Ottawa
Go in september. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januar, februar and desember - expect the least comfortable mix of heat, cold or rain.
What this means for Ottawa
Today is slightly cooler than average for september. The forecast high of 19°C is 3°C below the 22°C typical for this month.
A 10% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in juni til august.
The gap between the warmest and coldest month averages 31°C.
What til pack, what til skip
- Layers - the daily swing is 18°C, so mornings feel nothing like afternoons
- A warm mid-layer and gloves for early mornings and evenings
- A packable rain shell - 2 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid januar, februar and desember - historically the least comfortable months here.
Sammendrag
Ottawa is a city in Ontario. Ottawa is known for Parliament Hill and the Rideau Canal. Befolkningen er rundt 1 million.
Akkurat nå er det 19°C (66°F) in Ottawa med overskyet. Det føles som 20°C. I dag varierer temperaturen mellom 8°C til 19°C. Sannsynligheten for nedbør er 10%. Sightseeing conditions score 9.5/10 - utmerket — dra nå.
Beste tidspunkt å besøke Ottawa is september. Klimaet er subarctic. januar, februar and desember tend til be the least comfortable months. juli is the warmest month med average highs near 27°C, while januar is the coldest med lows near -13°C.
The closest major airport is mantreal-Trudeau International Airport (YUL), about 153 km away. Nearby highlights include mant-Tremblant National Park, Algonquin Provincial Park, Franconia Notch State Park and Watkins Glen State Park.
Kort sagt. Today is slightly cooler than average for september. The forecast high of 19°C is 3°C below the 22°C typical for this month. The best window til be outside is roughly 6 PM til 9 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Ottawa today at 9.7/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Ottawa
| Type | City |
|---|---|
| State | Ontario |
| Land | Canada |
| Kontinent | Nord-Amerika |
| Koordinater | 45°25′17.4″N 75°41′49.9″W (45.4215, -75.6972) |
| Befolkning | 1.020.000 |
| Known for | Parliament Hill and the Rideau Canal |
| Lokal tid | 8:05 PM (UTC-04:00) |
| Best months | september |
| Klima | Subarctic |
Vær map for Ottawa
Animated model layers. Pick a layer til load it.
Animated layers by Vindy. For pin-level detail and nearby places, see the interactive map below.
Explore Ottawa
Every topic we hold for this place, and the same topic for the places around it.
Klima for related places
Frequently asked questions
Where is Ottawa?
Ottawa is a city in Ontario. Its coordinates are 45.4215, -75.6972. It lies in Nord-Amerika.
What is the weather like in Ottawa akkurat nå?
It is currently 19°C (66°F) med overskyet. Luftfuktighet is 82% and wind is 6 km/h.
When is the best time til visit Ottawa?
september offer the most comfortable conditions in Ottawa, which has a subarctic climate. januar, februar and desember are usually the hardest months for outdoor plans.
What time zone is Ottawa in?
Ottawa observes America/Toronto (UTC-04:00). The local time is 8:05 PM.
How many people live in Ottawa?
Ottawa has a population of approximately 1 million.
What is the nearest airport til Ottawa?
The closest airports are mantreal-Trudeau International Airport (YUL), 153 km away and Toronto Pearson International Airport (YYZ), 367 km away.
What are the top things til do in Ottawa?
Popular options include mant-Tremblant National Park, Algonquin Provincial Park, Franconia Notch State Park, Watkins Glen State Park, CN Tower and Letchworth State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-supported) - coordinates, hierarchy and facts. |
|---|---|
| Værmelding and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated september 30, 2026 at 8:05 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
