Yellowknife weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: June – August
What is the weather like in Yellowknife in August?
In August, Yellowknife is mild: daytime highs average 18 °C, and nights cool down to about 11 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 9 rainy days and 46 mm in total. All in all, August is an excellent month for a holiday in Yellowknife.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 93 | 85 | 44 |
| Day | 21° | 18° | 11° |
| Night | 13° | 11° | 6° |
| Sun | 10 h | 8 h | 5 h |
| Rain days | 7 | 9 | 8 |
More details for August
- Daylight
- 16 h 11 min05:37 – 21:48
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 63 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−6America/Edmonton
How the score comes together
- Temperatureweight 50 %98 %
- Sunshineweight 20 %83 %
- Few rainy daysweight 30 %63 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Yellowknife in August: quick answers
Is Yellowknife hot in August?
No. In August, Yellowknife is mild: daytime highs average 18 °C and nights drop to about 11 °C.
Does it rain much in Yellowknife in August?
Rain is frequent, with about 9 rainy days and 46 mm in total.
Yellowknife month by month
The whole year in YellowknifeAll destinations: CanadaWhere to go in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences