Sundsvall Temperature by Month
The average annual maximum temperature in Sundsvall, Västernorrland, Sweden is 10°C (50°F), with daytime highs ranging from -1°C (30°F) in February to 22°C (72°F) in July. This page covers monthly averages, day-night differences, and how Sundsvall compares to cities worldwide.
Sundsvall Monthly Temperatures
Visitors to Sundsvall can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 11°C (52°F) in July to -8°C (18°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Sundsvall by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 268 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Sundsvall Temperatures: 1976-2026
Browse day-by-day temperature records for Sundsvall spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Sundsvall vs Sweden
The map below shows the annual temperature across Sweden. You can also select individual months if you want to compare a specific time of year.
very warm
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pleasant
moderate
cold
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Sundsvall vs World: Temperature Compared
Sundsvall's average annual maximum temperature is 10°C (50°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Sundsvall's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sundsvall climate page.
