The highest day temperature in July 2026 was 86°F. The lowest night temperature was 47°F. The average values for day and night temperatures during July were 69.0°F и 54.1°F respectivly.

The average sea surface temperature in July 2026 for Sundsvall was 61.7°F. The maximum and minimum values were 58.6°F and 64.2°F respectively.

You can expect various weather conditions during July. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in July for Sundsvall is 1.8 in.

The average wind speed in July is 6.5 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Sundsvall in July is 10.8 hours.