Sundsvall Weather in August
August in Sundsvall averages 20°C (68°F) during the day and 10°C (50°F) at night. It is the wettest month of the year, with 80 mm (3.1 in) of rainfall on average, so waterproof gear is a must.
Rainfall in Sundsvall in August
As the month with the highest rainfall, make sure to have an umbrella to manage the showers. Climate statistics over the past 30 years suggest around 14 days of rain, with 80 mm (3.1 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Sundsvall in August
If you're visiting Sundsvall in August, expect perfect temperatures with highs of 20°C (68°F) and overnight lows of 10°C (50°F). August is part of the summer season. The difference between afternoon and evening temperatures is usually noticeable. Nights drop to around 10°C (50°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Sundsvall in August
The month enjoys around 217 hours of sunshine, creating mostly sunny days with good weather conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Sundsvall.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sweden, check out our Sundsvall's climate page.
Sundsvall Temperature in August
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
46%
Precipitation
80 mm (3.1 in)
Rainy days
14 days
Sunshine
217 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Sundsvall typically drop from around 21°C (70°F) at the start of August to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 13°C (55°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Sundsvall in August
Browse day-by-day weather records for Sundsvall spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sundsvall historical weather extremes in August
Based on weather observations in Sundsvall between 1976 and 2025, these are the recorded extremes during August.
- On August 5, 2006, temperatures climbed to 30°C (86°F), marking the warmest August day on record.
- The coldest August day was on August 30, 1986, with a maximum of 9°C (48°F).
- The lowest overnight temperature recorded in August was 0°C (32°F) (August 30, 1994).
Best Places in Sweden in August
Find out more about the weather in Sweden and which places have the best travel conditions in this month. See all of Sweden in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Sundsvall in August
For Sundsvall in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Sundsvall in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sweden, check out our Sundsvall's climate page.
See the full Sundsvall climate overview or explore weather in Sweden.
