Climate averages 1991–2020
Trondheim weather
in July.
A mild, moderately wet month: the warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Trondheim: daytime highs average 18.6°C and nights cool to about 10.8°C. By daytime temperature it is the warmest month of the year.
Expect about 85 mm of rain on roughly 15 days, which makes July a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 19 h 19 min on an average July day.
The nearest other city in this atlas is Lillestrøm (388 km away). In July its highs average 21.0°C, 2.4°C warmer than Trondheim, with 94 mm of rain.
Among the 8 cities listed in Norway, Trondheim ranks 6th of 8 for the warmest July highs and 2nd of 8 for the driest July (rainfall, lowest first). The mean July high of those 8 cities is 19.6°C; Trondheim is 1.0°C cooler than that mean.
From July to August, average highs fall by 0.7°C to 17.9°C, and monthly rainfall rises from 85 mm to 99 mm.
The annual picture
July in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Trondheim climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.1°C-6.1°C | -6.1°C | 96 | 16.0 | 5.86 h |
| February | -0.5°C-6.1°C | -6.1°C | 86 | 14.5 | 8.69 h |
| March | 2.9°C-3.8°C | -3.8°C | 88 | 15.4 | 11.712 h |
| April | 7.8°C-0.4°C | -0.4°C | 67 | 13.6 | 14.915 h |
| May | 12.5°C3.8°C | 3.8°C | 70 | 15.6 | 18.118 h |
| June | 15.9°C8.1°C | 8.1°C | 95 | 15.6 | 20.320 h |
| July, selected | 18.6°C10.8°C | 10.8°C | 85 | 14.8 | 19.319 h |
| August | 17.9°C10.6°C | 10.6°C | 99 | 14.9 | 16.316 h |
| September | 14.0°C7.3°C | 7.3°C | 102 | 14.8 | 13.113 h |
| October | 7.8°C2.2°C | 2.2°C | 87 | 15.2 | 9.910 h |
| November | 2.3°C-2.4°C | -2.4°C | 79 | 13.2 | 6.87 h |
| December | -0.6°C-5.7°C | -5.7°C | 94 | 15.3 | 4.85 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Lillestrøm in JulyNorway · 388 kmHigh 21.0°C · Low 13.0°C · 94 mm rain
- Oslo in JulyNorway · 392 kmHigh 21.6°C · Low 13.9°C · 100 mm rain
- Drammen in JulyNorway · 410 kmHigh 21.6°C · Low 13.9°C · 101 mm rain
- Bergen in JulyNorway · 429 kmHigh 17.1°C · Low 11.3°C · 149 mm rain
- Gävle in JulySweden · 466 kmHigh 21.8°C · Low 13.8°C · 68 mm rain
- Fredrikstad in JulyNorway · 469 kmHigh 20.5°C · Low 14.4°C · 77 mm rain
- Umeå in JulySweden · 489 kmHigh 18.8°C · Low 13.1°C · 74 mm rain
- Örebro in JulySweden · 528 kmHigh 21.6°C · Low 13.9°C · 77 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Trondheim) is explained once on the Trondheim year overview and on the Sources, method and limits page.