Ottawa 氣候 and Average 天氣
氣候 of Ottawa: average temperatures, rainfall and seasons month by month.
氣候 in Ottawa month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| 月份 | Avg high | Avg low | 雨fall | Rating |
|---|---|---|---|---|
| 一月 | -5° | -13° | 61 mm | ★★☆☆☆ |
| 二月 | -3° | -13° | 49 mm | ★★☆☆☆ |
| 三月 | 5° | -6° | 79 mm | ★★☆☆☆ |
| 四月 | 11° | 1° | 128 mm | ★★★☆☆ |
| 五月 | 19° | 9° | 87 mm | ★★★★☆ |
| 六月 | 24° | 15° | 136 mm | ★★★★☆ |
| 七月 | 27° | 18° | 113 mm | ★★★★☆ |
| 八月 | 25° | 16° | 150 mm | ★★★★☆ |
| 九月 | 22° | 13° | 38 mm | ★★★★☆ |
| 十月 | 15° | 7° | 74 mm | ★★★★☆ |
| 十一月 | 5° | -1° | 60 mm | ★★★☆☆ |
| 十二月 | -2° | -9° | 90 mm | ★★☆☆☆ |
氣候 type: Subarctic. 來源： Open-Meteo archive (ERA5).
Recent extremes in Ottawa
高est and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Ottawa compares，天氣為nearby places
Annual averages, and the difference against Ottawa.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| 週一t-Tremblant National Park | 144 km | 4°C | 3°C cooler | 1298 mm |
| 週一treal-Trudeau International Airport | 153 km | 8°C | +1°C warmer | 1094 mm |
| 週一treal | 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 |
最佳旅遊時間 Ottawa
Go in 九月. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: 一月, 二月 and 十二月 - expect the least comfortable mix of heat, cold or rain.
What this means for Ottawa
Today is slightly warmer than average for 十月. The forecast high of 19°C is 3.6°C above the 15°C typical for this month.
雨 is very unlikely today - plans do not need a backup.
Overnight lows near -3°C mean ice is possible on bridges before dawn.
Northern Hemisphere, so peak summer falls in 六月至八月.
The gap between the warmest and coldest month averages 31°C.
What至pack, what至skip
- A warm mid-layer and gloves for early mornings and evenings
- Insulated outer layer, hat and boots，天氣為grip for ice
- Avoid high-elevation trails without traction devices - frozen surfaces persist in shade all day.
- If your dates are flexible, avoid 一月, 二月 and 十二月 - historically the least comfortable months here.
摘要
Ottawa is a city in Ontario. Ottawa is known for Parliament Hill and the Rideau Canal. 人口約為1 million.
目前氣溫為10°C (50°F) in Ottawa，天氣為局部多雲. 體感溫度為8°C. 今天氣溫介於-3°C至19°C. 降雨機率為6%. Sightseeing conditions score 8.7/10 - 極佳 — 現在適合出發.
最佳旅遊時間是Ottawa is 九月. 氣候為subarctic. 一月, 二月 and 十二月 tend至be the least comfortable months. 七月 is the warmest month，天氣為average highs near 27°C, while 一月 is the coldest，天氣為lows near -13°C.
The closest major airport is 週一treal-Trudeau International Airport (YUL), about 153 km away. Nearby highlights include 週一t-Tremblant National Park, Algonquin Provincial Park, Franconia Notch State Park and Watkins Glen State Park.
簡單來說。 Today is slightly warmer than average for 十月. The forecast high of 19°C is 3.6°C above the 15°C typical for this month. The best window至be outside is roughly 12 PM至3 PM, when temperature, rain chance and wind line up best. hiking is the strongest bet in Ottawa today at 9.5/10. Overnight lows near -3°C mean ice is possible on bridges before dawn.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Ottawa
天氣 map for Ottawa
Animated model layers. Pick a layer至load it.
Animated layers by 風y. 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.
氣候 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 北美洲.
What is the weather like in Ottawa現在?
It is currently 10°C (50°F)，天氣為局部多雲. 濕度 is 73% and wind is 9 km/h.
When is the best time至visit Ottawa?
九月 offer the most comfortable conditions in Ottawa, which has a subarctic climate. 一月, 二月 and 十二月 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 5:37 AM.
How many people live in Ottawa?
Ottawa has a population of approximately 1 million.
What is the nearest airport至Ottawa?
The closest airports are 週一treal-Trudeau International Airport (YUL), 153 km away and Toronto Pearson International Airport (YYZ), 367 km away.
What are the top things至do in Ottawa?
Popular options include 週一t-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. |
|---|---|
| 預報 and observations | Open-Meteo (ECMWF and national models). |
| 空氣品質 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 氣候 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 十月 26, 2026 at 5:37 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
