Average Weather In August For Winnipeg, Manitoba, Canada

Location

This report describes the typical weather at the Winnipeg The Forks/ (Winnipeg, Manitoba, Canada) weather station over the course of an average August. It is based on the historical records from 2003 to 2012. Earlier records are either unavailable or unreliable.

Winnipeg, Manitoba has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by croplands (87%), grasslands (10%), and built-up areas (3%).

Temperature

The month of August is characterized by falling daily high temperatures, with daily highs decreasing from 80°F to 74°F over the course of the month, exceeding 87°F or dropping below 65°F only one day in ten.

Daily High and Low Temperature in August

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
Daily low temperatures range from 56°F to 62°F, falling below 50°F or exceeding 67°F only one day in ten.

Fraction of Time Spent in Various Temperature Bands in August

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

Over the course of August, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1:39 hours, implying an average day-over-day decrease of 3.2 minutes.

The shortest day of the month is August 31 with 13:31 hours of daylight; the longest day is August 1 with 15:10 hours of daylight.

Daily Hours of Daylight and Twilight in August

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 5:59am on August 1; the latest sunset is at 9:09pm on August 1; the latest sunrise is at 6:43am on August 31; the earliest sunset is at 8:14pm on August 31.

Daylight savings time is observed in 2012 but it neither starts nor ends in August, so the entire month is in daylight time.

Daily Sunrise & Sunset with Twilight and Daylight Savings Time in August

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight savings time are indicated by the "DST" labels.

Clouds

This weather station does not reliably report sky cover.

Precipitation

There is either very little precipitation at this location in August, or the weather station does not reliably report the conditions.

Snow

Either snow is exceptionally unlikely to fall at this location in August or this station does not reliably report precipitation types.

Humidity

The relative humidity typically ranges from 43% (comfortable) to 87% (very humid) over the course of a typical August, rarely dropping below 31% (comfortable) and reaching as high as 95% (very humid).

The air is driest around August 1, at which time the relative humidity drops below 50% (mildly humid) three days out of four; it is most humid around August 28, rising above 83% (humid) three days out of four.

Relative Humidity in August

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical August, the dew point typically varies from 47°F (dry) to 62°F (mildy humid) and is rarely below 41°F (dry) or above 68°F (muggy).

The time of the month between August 1 and August 31 is the most comfortable, with dew points that are neither too dry nor too muggy.

Dew Point in August

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of August typical wind speeds vary from 1 mph to 8 mph (light air to gentle breeze), rarely exceeding 12 mph (gentle breeze).

The highest average wind speed of 5 mph (light breeze) occurs around August 18, at which time the average daily maximum wind speed is 8 mph (gentle breeze).

The lowest average wind speed of 4 mph (light breeze) occurs around August 1, at which time the average daily maximum wind speed is 8 mph (gentle breeze).

Wind Speed in August

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind is most often out of the north (19% of the time), south west (18% of the time), south (13% of the time), north west (13% of the time), and east (11% of the time). The wind is least often out of the south east (2% of the time).

Wind Directions in August

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in August

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.