Average Weather in Cumberland Canada
In Cumberland, the summers are short, comfortable, dry, and partly cloudy and the winters are long, very cold, wet, and mostly cloudy. Over the course of the year, the temperature typically varies from 32°F to 75°F and is rarely below 23°F or above 84°F.
Based on the tourism score, the best time of year to visit Cumberland for warm-weather activities is from mid July to mid August.
The warm season lasts for 2.6 months, from June 21 to September 10, with an average daily high temperature above 68°F. The hottest day of the year is August 1, with an average high of 75°F and low of 55°F.
The cool season lasts for 3.8 months, from November 11 to March 5, with an average daily high temperature below 46°F. The coldest day of the year is January 1, with an average low of 32°F and high of 39°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 Cumberland, 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 Cumberland begins around June 1 and lasts for 4.0 months, ending around October 2. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 69% of the time, and overcast or mostly cloudy 31% of the time.
The cloudier part of the year begins around October 2 and lasts for 8.0 months, ending around June 1. On January 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 75% of the time, and clear, mostly clear, or partly cloudy 25% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Cumberland varies significantly throughout the year.
The wetter season lasts 6.4 months, from October 8 to April 20, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 57% on November 17.
The drier season lasts 5.6 months, from April 20 to October 8. The smallest chance of a wet day is 10% on July 31.
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 throughout the year is rain alone, with a peak probability of 55% on November 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. Cumberland experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Cumberland. The most rain falls during the 31 days centered around November 18, with an average total accumulation of 6.8 inches.
The least rain falls around July 30, with an average total accumulation of 0.8 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. Cumberland experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.1 months, from November 11 to March 15, 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 30, with an average total liquid-equivalent accumulation of 0.4 inches.
The snowless period of the year lasts for 7.9 months, from March 15 to November 11. The least snow falls around July 23, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Cumberland varies extremely over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 8 minutes of daylight; the longest day is June 21, with 16 hours, 18 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:12 AM on June 16, and the latest sunrise is 3 hours, 5 minutes later at 8:16 AM on December 31. The earliest sunset is at 4:19 PM on December 11, and the latest sunset is 5 hours, 12 minutes later at 9:31 PM on June 25.
Daylight saving time (DST) is observed in Cumberland during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Cumberland, 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
The average hourly wind speed in Cumberland experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.9 months, from October 7 to May 4, with average wind speeds of more than 3.9 miles per hour. The windiest day of the year is November 19, with an average hourly wind speed of 4.6 miles per hour.
The calmer time of year lasts for 5.1 months, from May 4 to October 7. The calmest day of the year is August 2, with an average hourly wind speed of 3.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Cumberland varies throughout the year.
The wind is most often from the south for 3.8 months, from January 9 to May 2 and for 3.0 months, from October 1 to December 31, with a peak percentage of 42% on November 3. The wind is most often from the west for 5.0 months, from May 2 to October 1, with a peak percentage of 56% on July 23. The wind is most often from the east for 1.3 weeks, from December 31 to January 9, with a peak percentage of 34% on January 1.
Cumberland 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 some seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.9 months, from June 16 to September 13, with an average temperature above 58°F. The day of the year with the warmest water is August 4, with an average temperature of 61°F.
The time of year with cooler water lasts for 4.5 months, from November 23 to April 8, with an average temperature below 48°F. The day of the year with the coolest water is February 3, with an average temperature of 45°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Cumberland 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 Cumberland for general outdoor tourist activities is from mid July to mid August, with a peak score in the first week of August.
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 Cumberland for hot-weather activities is from late July to mid August, with a peak score in the first week of August.
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 Cumberland typically lasts for 6.5 months (200 days), from around April 13 to around October 30, rarely starting before March 26 or after May 2, and rarely ending before October 10 or after November 19.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Cumberland should appear around May 15, only rarely appearing before May 2 or after May 29.
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 3.3 months, from May 11 to August 21, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is July 20, with an average of 6.7 kWh.
The darker period of the year lasts for 4.0 months, from October 22 to February 21, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest day of the year is December 26, with an average of 0.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Cumberland are 49.616 deg latitude, -125.036 deg longitude, and 548 ft elevation.
The topography within 2 miles of Cumberland contains very significant variations in elevation, with a maximum elevation change of 1,348 feet and an average elevation above sea level of 723 feet. Within 10 miles contains very significant variations in elevation (4,905 feet). Within 50 miles also contains extreme variations in elevation (7,070 feet).
The area within 2 miles of Cumberland is covered by trees (72%), shrubs (12%), and sparse vegetation (10%), within 10 miles by trees (69%) and water (14%), and within 50 miles by trees (67%) and water (26%).
This report illustrates the typical weather in Cumberland, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Cumberland.
For each station, the records are corrected for the elevation difference between that station and Cumberland 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 Cumberland is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cumberland and a given station.
The stations contributing to this reconstruction are: Comox Valley Airport (53%, 15 kilometers, northeast); Port Alberni, B. C. (24%, 34 kilometers, south); Campbell River Airport (19%, 41 kilometers, northwest); and Estevan Point Meteorological Station (4.1%, 112 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .