Peak in July
Coolest in January
Heavy in April
Peak in dry season
Ottawa Monthly Weather Guide
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Essential Travel Info for Ottawa
Currency
CAD
$ Canadian dollar
Language
English
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Driving
Right side
Connect
The area codes for Ottawa are613and the ...
Safety
Very High Safety
GPI: 1.389
Best Time to Visit Ottawa
Location, climate overview & historical trends
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📍 45.4215° N, 75.6972° W
Open in Google MapsOttawa is a prominent destination in Canada.
Located at 45.42°N latitude,Ottawa experiences a temperate climate with four distinct seasons.
Based on 30 years of data, July is the warmest month (avg. 26°C), while January is the coolest. April sees the most rain (30% chance), making January the driest month.
Historical Climate Trend
30-Year Analysis+1.12°C
Total over 30 years
+0.37°C
Per decade
Linear regression analysis of historical maximum temperatures for Ottawa, based on 1995-2024 satellite data from NASA POWER.
Best Time to Visit
NASA POWER Data (1991-2021)May, June, July
Best months to visit
12°C
Avg High
Based on 30 years of NASA satellite data,Ottawa receives approximately 652mm of rainfall annually. These months offer optimal temperatures and minimal rain probability for your visit.
Climate Trends
EXCLUSIVE1995-2040 Temperature Trend
1995 Avg
11.4°
2024 Avg
12.5°
2040 Proj
13.3°
+0.37°C
per decade (observed)
+0.52°C
per decade (CMIP6)
🌡️ Ottawa has warmed by +1.1°C since 1995. By 2040, an additional +0.8°C is projected (based on CMIP6 rate of 0.523°C/decade), for a total of +2.0°C from 1995 baseline.
NASA POWER (1995-2024) + CMIP6 (CMCC_CM2_VHR4, EC_Earth3P_HR, FGOALS_f3_H, HiRAM_SIT_HR, MRI_AGCM3_2_S, NICAM16_8S)
Travel Intelligence
Exclusive flight analytics & health data for Ottawa
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Flight Connectivity Analysis
Airport traffic data & seasonal patterns
Balanced traffic
0
slots per day
Peak
Jul
Low
Jan
Monthly Traffic Distribution
Key Connections
Health & Safety Advisory
CDC travel health recommendations
COVID-19
All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.
Hepatitis A
Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.
Hepatitis B
Recommended for unvaccinated travelers younger than 60 years old traveling to Canada. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Canada.
Measles
Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.
Rabies
Dogs infected with rabies are not commonly found in Canada.Rabies is commonly found in some terrestrial wildlife species and bats.If rabies exposures occur while in Canada, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.
Yellow Fever
CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025
Source: CDC Travelers' Health
View Complete Health GuideOttawa Climate Data by Month
Historical temperature and precipitation averages
| Month | Avg High (°C) | Rain Probability (%) | Status |
|---|---|---|---|
| January | -4°C | 23% | ❄️ Cold |
| February | -3°C | 25% | ❄️ Cold |
| March | 3°C | 26% | ❄️ Cold |
| April | 11°C | 30% | Neutral |
| May | 19°C | 26% | 😊 Pleasant |
| June | 24°C | 28% | 😊 Pleasant |
| July | 26°C | 29% | 😊 Pleasant |
| August | 25°C | 25% | 😊 Pleasant |
| September | 21°C | 25% | 😊 Pleasant |
| October | 14°C | 27% | Neutral |
| November | 6°C | 27% | Neutral |
| December | -1°C | 28% | ❄️ Cold |
Weather in Cities Near Ottawa
Explore climate data for popular destinations within easy reach
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Compare weather conditions with nearby destinations for your trip planning
Compare Ottawa Weather vs Popular Destinations
Similar Climate Destinations
Discover destinations with weather similar to Ottawa
Amsterdam
Netherlands
Antwerp
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Aspen
United States
Bariloche
Argentina
Berlin
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Bruges
Belgium
These destinations share similar weather patterns with Ottawa. Perfect alternatives if you're looking for the same climate in a different location.
Ottawa Weather FAQ
When is the best time to visit Ottawa?
Honestly, look for months with mild temperatures (20°C-25°C) and low rain chance. Based on historical data, May, June, July are usually great choices.
When is the hottest month in Ottawa?
July is historically the hottest month in Ottawa with average highs of 26°C.
When does it rain the most in Ottawa?
April typically sees the highest probability of rain (30%).
Is Ottawa expensive?
Prices vary by season. The "Perfect" weather months usually coincide with peak tourist season and higher prices, while the rainy or cold months offer better deals.