Average Weather in Rimouski Canada
In Rimouski, the summers are cool; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 7°F to 66°F and is rarely below -8°F or above 73°F.
Based on the tourism score, the best time of year to visit Rimouski for warm-weather activities is from early July to mid August.
The warm season lasts for 3.6 months, from May 31 to September 17, with an average daily high temperature above 57°F. The hottest day of the year is July 27, with an average high of 66°F and low of 54°F.
The cold season lasts for 3.2 months, from December 7 to March 12, with an average daily high temperature below 29°F. The coldest day of the year is January 29, with an average low of 7°F and high of 20°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Rimouski, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Rimouski begins around June 7 and lasts for 4.8 months, ending around November 2. On August 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 60% of the time, and overcast or mostly cloudy 40% of the time.
The cloudier part of the year begins around November 2 and lasts for 7.2 months, ending around June 7. On January 11, the cloudiest day of the year, the sky is overcast or mostly cloudy 67% of the time, and clear, mostly clear, or partly cloudy 33% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Rimouski varies throughout the year.
The wetter season lasts 6.5 months, from May 6 to November 21, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 39% on July 8.
The drier season lasts 5.5 months, from November 21 to May 6. The smallest chance of a wet day is 21% on February 13.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Rimouski changes throughout the year.
Rain alone is the most common for 8.2 months, from March 24 to November 30. The highest chance of a day with rain alone is 39% on July 8.
Snow alone is the most common for 3.7 months, from November 30 to March 24. The highest chance of a day with snow alone is 20% on January 9.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Rimouski experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.5 months, from March 11 to December 28, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 30, with an average total accumulation of 3.2 inches.
The rainless period of the year lasts for 2.5 months, from December 28 to March 11. The least rain falls around February 9, with an average total accumulation of 0.3 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Rimouski experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 6.3 months, from October 23 to May 2, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 26, with an average total liquid-equivalent accumulation of 1.5 inches.
The snowless period of the year lasts for 5.7 months, from May 2 to October 23. The least snow falls around July 26, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Rimouski varies extremely over the course of the year. In 2021, the shortest day is December 21, with 8 hours, 18 minutes of daylight; the longest day is June 20, with 16 hours, 7 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:31 AM on June 16, and the latest sunrise is 2 hours, 56 minutes later at 7:28 AM on November 6. The earliest sunset is at 3:38 PM on December 11, and the latest sunset is 5 hours, 1 minute later at 8:39 PM on June 25.
Daylight saving time (DST) is observed in Rimouski during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.
Sunrise & Sunset with Twilight and Daylight Saving Time
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases
The perceived humidity level in Rimouski, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Rimouski experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.1 months, from October 18 to April 21, with average wind speeds of more than 8.8 miles per hour. The windiest day of the year is January 12, with an average hourly wind speed of 10.9 miles per hour.
The calmer time of year lasts for 5.9 months, from April 21 to October 18. The calmest day of the year is August 1, with an average hourly wind speed of 6.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Rimouski varies throughout the year.
The wind is most often from the north for 1.4 months, from April 1 to May 13, with a peak percentage of 33% on April 13. The wind is most often from the west for 11 months, from May 13 to April 1, with a peak percentage of 45% on January 1.
Rimouski is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.5 months, from June 26 to September 9, with an average temperature above 50°F. The day of the year with the warmest water is August 3, with an average temperature of 54°F.
The time of year with cooler water lasts for 6.1 months, from November 9 to May 13, with an average temperature below 36°F. The day of the year with the coolest water is February 16, with an average temperature of 31°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Rimouski throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Rimouski for general outdoor tourist activities is from early July to mid August, with a peak score in the last week of July.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Rimouski for hot-weather activities is from mid July to early August, with a peak score in the last week of July.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Rimouski typically lasts for 5.4 months (166 days), from around May 6 to around October 19, rarely starting before April 19 or after May 24, and rarely ending before September 28 or after November 8.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Rimouski should appear around June 10, only rarely appearing before May 31 or after June 19.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.7 months, from May 1 to August 23, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is June 20, with an average of 6.4 kWh.
The darker period of the year lasts for 3.5 months, from October 26 to February 12, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest day of the year is December 17, with an average of 1.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Rimouski are 48.449 deg latitude, -68.524 deg longitude, and 72 ft elevation.
The topography within 2 miles of Rimouski contains significant variations in elevation, with a maximum elevation change of 561 feet and an average elevation above sea level of 113 feet. Within 10 miles contains significant variations in elevation (1,247 feet). Within 50 miles contains very significant variations in elevation (2,959 feet).
The area within 2 miles of Rimouski is covered by artificial surfaces (39%), water (28%), and trees (21%), within 10 miles by water (42%) and trees (38%), and within 50 miles by trees (59%) and water (34%).
This report illustrates the typical weather in Rimouski, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Rimouski.
For each station, the records are corrected for the elevation difference between that station and Rimouski according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Rimouski is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Rimouski and a given station.
The stations contributing to this reconstruction are: Ile Bicquette, Que. (49%, 27 kilometers, west); Mont-Joli Airport (46%, 28 kilometers, northeast); and Edmundston Airport (6%, 116 kilometers, south).
Time zones for airports and weather stations are provided by AskGeo.com .