Dease Lake Weather in August
During August, Dease Lake experiences moderate daytime temperatures of 16°C (61°F) and cooler nights around 6°C (43°F). As part of the summer season, expect quite a bit of rainfall. Around 93 mm (3.7 in) is typical.
Rainfall in Dease Lake in August
Expect around 16 days of rain based on historical data, with 93 mm (3.7 in) average. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Dease Lake in August
Dease Lake in August gets highs of 16°C (61°F) during the day and drops to 6°C (43°F) at night. During August, you'll experience the summer season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Dease Lake in August
The month brings about 187 hours of sunlight, offering a comfortable mix of sun and overcast.
Wind Speed in Dease Lake in August
August has wind speeds averaging 1 m/s (2 knots). You can expect very gentle conditions with light air movement on typical days. Since this is an average, daily weather varies from perfectly still moments to some breezier days.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
Dease Lake Temperature in August
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Dease Lake Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dease Lake - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Dease Lake typically drop from around 20°C (68°F) at the start of August to approximately 15°C (59°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 8°C (46°F).
Average temperatures in August
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather records for Dease Lake in August
Browse day-by-day weather records for Dease Lake spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dease Lake historical weather extremes in August
Based on 28 years of weather observations (1998-2026), these are the most extreme conditions recorded in Dease Lake.
- The hottest August day on record in Dease Lake reached 30°C (86°F) (August 9, 2017).
- On August 18, 2019, Dease Lake saw its coldest August day with temperatures maxing out at 2°C (36°F).
- The coldest night in August in Dease Lake was on August 10, 2003, with a minimum of -3°C (27°F).
Best Places in Canada in August
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in August →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Dease Lake in August
Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Dease Lake in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Barbeque6/10 -
Camping4/10 -
Outdoor sports9/10
Dease Lake 3-Day Forecast
Temperature Rainfall Sunshine Wind Speed
See the full Dease Lake climate overview or explore weather in Canada.
Popular in August
Where to go in August - average daytime high across popular destinations.
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