Weather in Trondheim in October 2025
Average weather
Average temperature in Trondheim in October
The temperature in October is +6°C on average, with a range between a maximum of +15°C during the day and a minimum of -7°C at night.
The average maximum temperature goes down 64% by the end of the month, compared with the beginning of the month, from +12°C to -2°C.
Is Trondheim warm or cold in October?
Trondheim is typically cool in October.
Maximum temperatures go down compared to the previous month from +14°C to +9°C. The minimum temperature also goes down from +7°C to +3°C.
Pack a sweater and a jacket as there will be cooler temperatures.
Take a look at how October is compared to other months in Trondheim:
Water temperature in Trondheim in October
Water in Trondheim in October is Cold. It varies from +9°C to +13°C, with an average of +11°C. Note that the air temperature is lower than the water temperature, averaging around +9°C.
In October, water temperatures are average relative to the rest of the year:
Can you swim in Trondheim in October?
Climate in Trondheim in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +14°C | +9°C | +4°C | ||||
| Min. temperature | ||||||
| -2°C | -12°C | -18°C | ||||
| Max. temperature | ||||||
| +25°C | +22°C | +16°C | ||||
| Rainfall | ||||||
| 121 mm | 92 mm | 62 mm | ||||
| Wind | ||||||
| 1 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +13°C | +11°C | +9°C | ||||
| Humidity | ||||||
| 79% | 80% | 80% | ||||
| Air pressure | ||||||
| 1010 HPa | 1008 HPa | 1006 HPa | ||||
| Sunny days | ||||||
| 2 | 2 | 2 | ||||
| Cloudy days | ||||||
| 7 | 8 | 9 | ||||
| Rainy days | ||||||
| 21 | 18 | 9 | ||||
| Snowy days | ||||||
| 0 | 3 | 10 | ||||
October weather is still as ok as in September. It’s getting colder in October. From +14°C in the day, the average maximum temperature lowers to +9°C. As October arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 121 mm to 92 mm. Humidity rises from 79% to 80%. Winds are stronger in comparison to September, going up from 1 m/s to 2 m/s on average. The amount of sunny days stay about the same, averaging 2 sunny days during the month.
November brings much the same weather, it remains ok.
Wind
The average wind speed is 1 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Trondheim is gradually increasing during October, going from 1 m/s to 1 m/s over the course of the month.
Rain
Snow
Here’s how October is compared with other months in the amount of snow, total mm:
How was the weather last October in Trondheim?
Climate Change over Years
The climate in Trondheim in October has not changed much over the last 43 years.
The average temperature was the lowest in 1981 (+7°C) and the highest in 2014 (+11°C). The driest year was 2002 with only 617 mm of rainfall, and the wettest year was 2007 with 1311 mm.
FAQ
Is October a good time to visit Trondheim?
Can you sunbathe in Trondheim in October?
Can you swim in Trondheim in October?
Is Trondheim rainy in October?
Is it sunny in Trondheim in October?
Other cities in Norway
Monthly weather in Trondheim
Source of the data
For this page, we’ve looked at the typical weather in Trondheim, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.