The highest day temperature in July 2025 was 80°F. The lowest night temperature was 47°F. The average values for day and night temperatures during July were 66.8°F и 57.2°F respectivly.

The average sea surface temperature in July 2025 for Trondheim was 65.1°F. The maximum and minimum values were 56.2°F and 74.0°F respectively.

Most of the days in July are gloomy but you can also expect sunny days.

Precipitation total in July for Trondheim is 2.6 in.

The average wind speed in July is 5.4 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 Trondheim in July is 9.1 hours.