Average Weather in Charlottetown Canada
In Charlottetown, the temperature typically varies from 11°F to 74°F over the course of the year, and is rarely below -3°F or above 82°F.
The warm season lasts for 102 days, from June 10 to September 20, with an average daily high temperature above 64°F. The hottest day of the year is July 28, with an average high of 74°F and low of 61°F.
The cold season lasts for 103 days, from December 8 to March 21, with an average daily high temperature below 36°F. The coldest day of the year is January 30, with an average low of 11°F and high of 26°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
The length of the day in Charlottetown varies significantly over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 37 minutes of daylight; the longest day is June 21, with 15 hours, 47 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:20 AM on June 15, and the latest sunrise is 2 hours, 38 minutes later at 7:58 AM on November 4. The earliest sunset is at 4:26 PM on December 10, and the latest sunset is 4 hours, 42 minutes later at 9:08 PM on June 25.
Daylight saving time (DST) is observed in Charlottetown during 2017, starting in the spring on March 12, lasting 237 days, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
In Charlottetown, 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 Charlottetown begins around June 11 and lasts for 153 days, ending around November 11. On September 3, 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 11 and lasts for 212 days, ending around June 11. On February 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 69% of the time, and clear, mostly clear, or partly cloudy 31% of the time.
Charlottetown does not experience significant seasonal variation in the frequency of wet days (i.e., those with greater than 0.04 inches of liquid or liquid-equivalent precipitation). The frequency ranges from 27% to 35%, with an average value of 30%.
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 Charlottetown changes throughout the year.
Rain alone is the most common for 288 days, from March 13 to December 26. The highest chance of a day with rain alone is 33% on October 8.
Snow alone is the most common for 77 days, from December 26 to March 13. The highest chance of a day with snow alone is 15% on February 13.
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 in the year. Charlottetown experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Charlottetown. The most rain falls during the 31 days centered around October 30, with an average total accumulation of 3.5 inches.
The least rain falls around February 8, with and average total accumulation of 1.0 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 in the year. Charlottetown experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 179 days, from November 7 to May 5, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around February 5, with an average total liquid-equivalent accumulation of 1.5 inches.
The snowless period of the year lasts for 186 days, from May 5 to November 7. The least snow falls around August 3, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
Charlottetown experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 81 days, from June 23 to September 12, during which time the comfort level is muggy, oppressive, or miserable at least 4% of the time. The muggiest day of the year is August 2, with muggy conditions 15% of the time.
The least muggy day of the year is December 5, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Charlottetown experiences mildly seasonal variation over the course of the year.
The windier part of the year lasts for 199 days, from September 24 to April 11, with average wind speeds of more than 6.7 miles per hour. The windiest day of the year is January 8, with an average hourly wind speed of 8.2 miles per hour.
The calmer time of year lasts for 166 days, from April 11 to September 24. The calmest day of the year is August 1, with an average hourly wind speed of 5.3 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Charlottetown varies throughout the year.
The wind is most often from the north for 27 days, from April 8 to May 5, with a peak percentage of 30% on April 29. The wind is most often from the south for 89 days, from May 5 to August 2, with a peak percentage of 42% on July 15. The wind is most often from the west for 249 days, from August 2 to April 8, with a peak percentage of 53% on January 11.
Charlottetown 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 88 days, from July 5 to October 1, with an average temperature above 58°F. The day of the year with the warmest water is August 13, with an average temperature of 65°F.
The time of year with cooler water lasts for 152 days, from December 8 to May 9, with an average temperature below 37°F. The day of the year with the coolest water is February 22, with an average temperature of 30°F.
Average Water Temperature
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences very significant seasonal variation over the course of the year.
The brighter period of the year lasts for 102 days, from May 12 to August 22, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is July 2, with an average of 6.6 kWh.
The darker period of the year lasts for 107 days, from October 29 to February 13, with an average daily incident shortwave energy per square meter below 2.2 kWh. The darkest day of the year is December 21, with an average of 1.1 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Charlottetown are 46.239 deg latitude, -63.134 deg longitude, and 26 ft elevation (map ).
The topography within 2 miles of Charlottetown contains only modest variations in elevation, with a maximum elevation change of 108 feet, and an average elevation above sea level of 20 feet. Within 10 miles also contains only modest variations in elevation (348 feet). Within 50 miles contains very significant variations in elevation (1,175 feet).
The area within 2 miles of Charlottetown is covered by water (41%), artificial surfaces (35%), and trees (10%), within 10 miles by cropland (45%) and water (28%), and within 50 miles by water (61%) and trees (25%).
This report illustrates the typical weather in Charlottetown, 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 Charlottetown.
For each station, the records are corrected for the elevation difference between that station and Charlottetown 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 Charlottetown is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Charlottetown and a given station.
The stations contributing to this reconstruction are: Charlottetown Airport (95%, 4.9 kilometers, north), Caribou Point Meteorological Aeronautical Presentation System (3.0%, 63 kilometers, southeast), and Truro, N. S. (1.6%, 95 kilometers, south).
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .