Average Weather at Nanaimo Airport Canada
At Nanaimo Airport, the summers are short, comfortable, dry, and partly cloudy and the winters are very cold, wet, and mostly cloudy. Over the course of the year, the temperature typically varies from 31°F to 78°F and is rarely below 21°F or above 87°F.
Based on the tourism score, the best time of year to visit Nanaimo Airport for warm-weather activities is from mid July to mid August.
The warm season lasts for 2.7 months, from June 22 to September 12, with an average daily high temperature above 70°F. The hottest day of the year is August 1, with an average high of 78°F and low of 54°F.
The cold season lasts for 3.7 months, from November 12 to March 3, with an average daily high temperature below 49°F. The coldest day of the year is January 1, with an average low of 31°F and high of 42°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
At Nanaimo Airport, 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 at Nanaimo Airport begins around June 4 and lasts for 4.0 months, ending around October 4. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 73% of the time, and overcast or mostly cloudy 27% of the time.
The cloudier part of the year begins around October 4 and lasts for 8.0 months, ending around June 4. On January 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 70% of the time, and clear, mostly clear, or partly cloudy 30% 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 at Nanaimo Airport varies significantly throughout the year.
The wetter season lasts 6.1 months, from October 11 to April 15, with a greater than 32% chance of a given day being a wet day. The chance of a wet day peaks at 55% on November 18.
The drier season lasts 5.9 months, from April 15 to October 11. The smallest chance of a wet day is 9% 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 51% on November 15.
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. Nanaimo Airport experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year at Nanaimo Airport. The most rain falls during the 31 days centered around November 20, with an average total accumulation of 6.2 inches.
The least rain falls around July 30, with an average total accumulation of 0.6 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. Nanaimo Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 3.0 months, from November 18 to February 17, 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 0.3 inches.
The snowless period of the year lasts for 9.0 months, from February 17 to November 18. The least snow falls around July 29, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Nanaimo Airport varies extremely over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 13 minutes of daylight; the longest day is June 21, with 16 hours, 13 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:10 AM on June 16, and the latest sunrise is 2 hours, 59 minutes later at 8:09 AM on December 31. The earliest sunset is at 4:17 PM on December 11, and the latest sunset is 5 hours, 6 minutes later at 9:24 PM on June 25.
Daylight saving time (DST) is observed at Nanaimo Airport 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 at Nanaimo Airport, 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 at Nanaimo Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.1 months, from October 19 to April 21, with average wind speeds of more than 5.2 miles per hour. The windiest day of the year is December 4, with an average hourly wind speed of 6.3 miles per hour.
The calmer time of year lasts for 5.9 months, from April 21 to October 19. The calmest day of the year is August 12, with an average hourly wind speed of 4.0 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Nanaimo Airport varies throughout the year.
The wind is most often from the south for 2.3 weeks, from March 20 to April 5 and for 4.0 days, from October 21 to October 25, with a peak percentage of 33% on April 2. The wind is most often from the west for 6.5 months, from April 5 to October 21, with a peak percentage of 68% on July 22. The wind is most often from the east for 4.8 months, from October 25 to March 20, with a peak percentage of 50% on January 1.
Nanaimo Airport 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 3.0 months, from June 15 to September 15, with an average temperature above 57°F. The day of the year with the warmest water is August 2, with an average temperature of 60°F.
The time of year with cooler water lasts for 4.4 months, from November 23 to April 4, with an average temperature below 48°F. The day of the year with the coolest water is January 28, with an average temperature of 45°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is at Nanaimo Airport 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 Nanaimo Airport 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 Nanaimo Airport for hot-weather activities is from mid 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 at Nanaimo Airport typically lasts for 6.3 months (194 days), from around April 15 to around October 26, rarely starting before March 29 or after May 2, and rarely ending before October 9 or after November 14.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Nanaimo Airport should appear around May 2, only rarely appearing before April 20 or after May 16.
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 10 to August 21, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest day of the year is July 20, with an average of 6.8 kWh.
The darker period of the year lasts for 3.9 months, from October 24 to February 19, with an average daily incident shortwave energy per square meter below 2.0 kWh. The darkest day of the year is December 25, with an average of 0.8 kWh.
Average Daily Incident Shortwave Solar Energy
This report illustrates the typical weather at Nanaimo Airport, 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
Nanaimo Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back include but are not limited to Entrance Island Automatic Weather Reporting System; Ballenas Island Automatic Weather Reporting System; Sand Heads CS, B. C.; Malahat Automatic Weather Reporting System; Victoria International Airport; Port Mellon; Point Atkinson; and Sheringham Automatic Weather Reporting System.
Time zones for aiports and weather stations are provided by AskGeo.com .