Weather in Slave Lake in August

General weather information about Slave Lake

Average annual temperature is 5.1 °C

Absolute maximum temperature: 28.7 °C

Absolute minimum temperature: -34.0 °C

Number of sunny days: 188 days

Number of rainy days: 121 days

Number of snow days: 56 days

Look at detailed online map of Slave Lake

* Weather data for Slave Lake Canada is based on climate observations for 2026 year

Slave Lake air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)5.96.17.220.028.728.527.727.523.619.46.67.0
Average daytime temperature (°C)-3.6-3.8-1.010.621.822.122.621.418.19.53.01.0
Average temperature (°C)-6.7-9.3-7.63.914.316.417.516.612.85.2-0.2-2.9
Average night temperature (°C)-9.4-13.5-12.8-1.47.611.513.312.88.52.0-2.6-6.1
Absolute minimum temperature (°C)-21.5-34.0-26.9-9.02.25.98.68.24.1-7.6-8.2-11.6

Slave Lake monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.013.015.016.017.017.015.013.011.09.07.0
Daylight mean duration (h)7.89.711.914.216.217.316.815.012.710.58.47.2
Daylight minimum duration (h)7.08.010.013.015.017.016.013.011.09.07.07.0
Sunshine mean duration (h)3.55.39.010.412.512.012.010.210.16.84.14.3
Precipitation (mm)34304115393143113142488
Sunny days16102120171391517161321
Rainy days470514172216137115
Snow days111110500000865

Slave Lake - weather forecast by months

Slave Lake weather in januarySlave Lake weather in februarySlave Lake weather in marchSlave Lake weather in aprilSlave Lake weather in maySlave Lake weather in juneSlave Lake weather in julySlave Lake weather in augustSlave Lake weather in septemberSlave Lake weather in octoberSlave Lake weather in novemberSlave Lake weather in december

Best time to visit Slave Lake:

The best time to visit Slave Lake during the most sunny months:

  • May — 12.5(h)
  • June — 12.0(h)
  • July — 12.0(h)

Months with the longest average daylight duration in Slave Lake:

  • May — 16.2(h)
  • June — 17.3(h)
  • July — 16.8(h)

The largest precipitation sum in Slave Lake is at

  • June — 93(mm)
  • July — 143(mm)
  • August — 113(mm)

    • Weather forecast in the closest to Slave Lake admin centers

    Weather forecast in the closest towns to Slave Lake

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    Frequently asked questions

    When is the best time to visit Slave Lake?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Slave Lake.
    What is the weather like in Slave Lake?
    See average temperature, rainfall and daylight hours for Slave Lake by month in the table above.
    How many sunny days does Slave Lake have?
    The monthly weather statistics above show sunshine and rainfall patterns for Slave Lake throughout the year.