August Weather at Port Alberni, B. C. British Columbia, CanadaDaily high temperatures decrease by 4°F, from 80°F to 76°F, rarely falling below 66°F or exceeding 91°F. The highest daily average high temperature is 80°F on August 4. Daily low temperatures decrease by 3°F, from 54°F to 51°F, rarely falling below 44°F or exceeding 59°F. The highest daily average low temperature is 54°F on August 2. For reference, on August 3, the hottest day of the year, temperatures at Port Alberni, B. C. typically range from 54°F to 80°F, while on January 1, the coldest day of the year, they range from 32°F to 39°F. Average High and Low Temperature in August at Port Alberni, B. C.
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, 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 August at Port Alberni, B. C.
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
Ezcaray, Spain (5,201 miles away) and Montmarault, France (5,135 miles) are the far-away foreign places with temperatures most similar to Port Alberni, B. C. (view comparison). CloudsThe month of August at Port Alberni, B. C. experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 30% to 38%. The lowest chance of overcast or mostly cloudy conditions is 30% on August 3. The clearest day of the month is August 3, with clear, mostly clear, or partly cloudy conditions 70% of the time. For reference, on January 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 76%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%. Cloud Cover Categories in August at Port Alberni, B. C.
0%
clear
20%
mostly clear
40%
partly cloudy
60%
mostly cloudy
80%
overcast
100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
Compare Port Alberni, B. C. to:PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Port Alberni, B. C., the chance of a wet day over the course of August is rapidly increasing, starting the month at 10% and ending it at 17%. For reference, the year's highest daily chance of a wet day is 58% on November 18, and its lowest chance is 10% on July 31. Probability of Precipitation in August at Port Alberni, B. C.
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
RainfallTo show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during August at Port Alberni, B. C. is increasing, starting the month at 0.8 inches, when it rarely exceeds 1.9 inches or falls below 0.1 inches, and ending the month at 1.4 inches, when it rarely exceeds 2.8 inches or falls below 0.2 inches. Average Monthly Rainfall in August at Port Alberni, B. C.
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
SunOver the course of August at Port Alberni, B. C., the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 38 minutes, implying an average daily decrease of 3 minutes, 16 seconds, and weekly decrease of 22 minutes, 50 seconds. The shortest day of the month is August 31, with 13 hours, 29 minutes of daylight and the longest day is August 1, with 15 hours, 7 minutes of daylight. Hours of Daylight and Twilight in August at Port Alberni, B. C.
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
The earliest sunrise of the month at Port Alberni, B. C. is 5:51 AM on August 1 and the latest sunrise is 43 minutes later at 6:34 AM on August 31. The latest sunset is 8:58 PM on August 1 and the earliest sunset is 55 minutes earlier at 8:03 PM on August 31. Daylight saving time is observed at Port Alberni, B. C. during 2026, but it neither starts nor ends during August, so the entire month is in daylight saving time. For reference, on June 21, the longest day of the year, the Sun rises at 5:13 AM and sets 16 hours, 15 minutes later, at 9:28 PM, while on December 21, the shortest day of the year, it rises at 8:11 AM and sets 8 hours, 11 minutes later, at 4:23 PM. Sunrise & Sunset with Twilight in August at Port Alberni, B. C.
The solar day over the course of August. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.
The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. Solar Elevation and Azimuth in August at Port Alberni, B. C.
northeastsouthwest
Solar elevation and azimuth over the course of August 2026. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).
MoonThe figure below presents a compact representation of key lunar data for August 2026. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. Moon Rise, Set & Phases in August at Port Alberni, B. C.
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
HumidityWe 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. The chance that a given day will be muggy at Port Alberni, B. C. is essentially constant during August, remaining around 0% throughout. For reference, on August 7, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time. WindThis 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 at Port Alberni, B. C. is essentially constant during August, remaining within 0.1 miles per hour of 3.2 miles per hour throughout. For reference, on November 30, the windiest day of the year, the daily average wind speed is 5.4 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 3.1 miles per hour. The lowest daily average wind speed during August is 3.1 miles per hour on August 2. The hourly average wind direction at Port Alberni, B. C. throughout August is predominantly from the west, with a peak proportion of 53% on August 1. Wind Direction in August at Port Alberni, B. C.
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).
Water TemperaturePort Alberni, B. C. 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 surface water temperature at Port Alberni, B. C. is essentially constant during August, remaining within 1°F of 59°F throughout. The highest average surface water temperature during August is 59°F on August 4. Growing SeasonDefinitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). The growing season at Port Alberni, B. C. typically lasts for 6.2 months (190 days), from around April 22 to around October 29, rarely starting before March 30 or after May 13, and rarely ending before September 30 or after November 22. The month of August at Port Alberni, B. C. is reliably fully within the growing season. Time Spent in Various Temperature Bands and the Growing Season in August at Port Alberni, B. C.
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F. The average accumulated growing degree days at Port Alberni, B. C. are increasing during August, increasing by 416°F, from 954°F to 1,370°F, over the course of the month. Solar EnergyThis 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 at Port Alberni, B. C. is decreasing during August, falling by 1.4 kWh, from 6.5 kWh to 5.0 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Port Alberni, B. C. are 49.250 deg latitude, -124.833 deg longitude, and 26 ft elevation. The topography within 2 miles of Port Alberni, B. C. contains very significant variations in elevation, with a maximum elevation change of 1,083 feet and an average elevation above sea level of 183 feet. Within 10 miles contains very significant variations in elevation (4,846 feet). Within 50 miles also contains extreme variations in elevation (6,834 feet). The area within 2 miles of Port Alberni, B. C. is covered by trees (44%), artificial surfaces (15%), water (13%), and sparse vegetation (13%), within 10 miles by trees (84%), and within 50 miles by trees (59%) and water (33%). Data SourcesThis report illustrates the typical weather at Port Alberni, B. C., based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointPort Alberni, B. C. 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 Comox Valley Airport, Sisters Island Automatic Weather Reporting System, Powell River Airport, Ballenas Island Automatic Weather Reporting System, Entrance Island Automatic Weather Reporting System, Sheringham Automatic Weather Reporting System, Port Mellon, and Malahat Automatic Weather Reporting System. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page. |
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