Ottawa Veður Spá
Ottawa weather: 16°C, að mestu heiðskýrt. Á klukkustund forecast, 14-day outlook, UV, air quality and the best time til visit.
14-day forecast for Ottawa
Hæst / Lægst; Úrkoma; UV
| Dagur | Aðstæður | Hæst / Lægst | Úrkoma | Vindur | UV |
|---|---|---|---|---|---|
| mið., sep 16 | ☁️ Skýjað | 24° / 15° | 19% | 12 km/h | 5 |
| fim., sep 17 | ☁️ Skýjað | 20° / 11° | 4% | 9 km/h | 5 |
| fös., sep 18 | ☁️ Skýjað | 17° / 9° | 0% | 23 km/h | 5 |
| lau., sep 19 | ☁️ Skýjað | 15° / 5° | 14% | 12 km/h | 5 |
| sun., sep 20 | 🌧️ Heavy drizzle | 19° / 8° | 25% · 3 mm | 16 km/h | 5 |
| mán., sep 21 | ☁️ Skýjað | 14° / 7° | 10% | 12 km/h | 4 |
| þri., sep 22 | 🌦️ Light drizzle | 11° / 9° | 13% · 3 mm | 19 km/h | 1 |
| mið., sep 23 | 🌦️ Drizzle | 14° / 11° | 21% · 5 mm | 15 km/h | 1 |
| fim., sep 24 | 🌦️ Lítil rigning | 17° / 11° | 23% · 8 mm | 26 km/h | 1 |
| fös., sep 25 | 🌦️ Light drizzle | 11° / 7° | 23% · 3 mm | 18 km/h | 2 |
| lau., sep 26 | ☁️ Skýjað | 15° / 4° | 16% | 18 km/h | 5 |
| sun., sep 27 | ☁️ Skýjað | 22° / 8° | 19% | 14 km/h | 5 |
| mán., sep 28 | ☁️ Skýjað | 23° / 13° | 16% | 19 km/h | 4 |
| þri., sep 29 | ⛅ Skýjað að hluta | 25° / 14° | 15% | 13 km/h | 4 |
The two-week trend
Steady. The second week averages within a degree of the first, so no big change is signalled.
The window averages 18°C against a september normal of 22°C - 5°C below.
Rigningfall over the next 7 days is close til normal for september (6 mm against a typical 9 mm).
What this means for Ottawa
Today is slightly warmer than average for september. The forecast high of 24°C is 1.6°C above the 22°C typical for this month.
A 19% 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 júní til ágúst.
The gap between the warmest and coldest month averages 31°C.
What til pack, what til skip
- sun.glasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 19°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid janúar, febrúar and desember - historically the least comfortable months here.
Sjá spá fyrir Ottawa eftir tímabili
Ottawa weather - more answers
Explore Ottawa
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Frequently asked questions
Where is Ottawa?
Ottawa is a city in Ontario. Its coordinates are 45.4215, -75.6972. It lies in Norður-Ameríka.
What is the weather like in Ottawa núna?
It is currently 16°C (61°F) með að mestu heiðskýrt. Raki is 81% and wind is 2 km/h.
When is the best time til visit Ottawa?
september offer the most comfortable conditions in Ottawa, which has a subarctic climate. janúar, febrúar 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 2:34 AM.
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 mán.treal-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 mán.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. |
|---|---|
| Spá and observations | Open-Meteo (ECMWF and national models). |
| Loftgæði and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Loftslag 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 16, 2026 at 2:34 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
