Trondheim weather in October

In October, Trondheim sees average daytime highs of 8°C and overnight lows near 3°C, with 87 mm of precipitation across 15.2 wet days and about 9.4 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 11°C in the first days to 6°C by the end. The sky is clear or mostly clear about 17% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of October to 7 h 48 min by month's end. Set against the rest of the year, October is Trondheim's 2nd-clearest and 6th-windiest month. For the whole year in context, see Trondheim's year-round climate.

Daytime high
7th warmest
Overnight low
7th coldest
Precipitation
87 mm
15.2 wet days
Daylight
9 h 24 min
7:22 AM – 4:45 PM
Cloud cover
72%
2nd clearest
Wind
9 km/h
6th windiest
Solar energy
0.99 kWh/m²
Travel score
1.3
out of 10

Trondheim is city in Trøndelag, Norway.

Air quality
Good
PM2.5 5.7 µg/m³ · 2019
Density
3,766/km²
people per km²
Founded
~997 CE

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 11°C in the first days to 6°C by the end.

A typical October day in Trondheim reaches about 8°C in the afternoon and slips back to 3°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 13°C. Set against its neighbours, October runs about 6°C cooler than September and about 5°C warmer than November.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1125
2115
3115
4115
5115
6114
7104
8104
9104
10104
1193
1293
1393
1493
1583
1683
1782
1882
1972
2072
2172
2272
2372
2472
2561
2661
2761
2861
2961
3061
3161

How October really feels in Trondheim

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 15 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
15
wind chill below the day's low

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

Trondheim weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°9615.912.75.20.0
Feb / -5°8414.211.98.10.0
Mar / -3°8815.410.811.20.1
Apr / 6713.65.414.51.6
May13° / 7015.61.417.73.2
Jun16° / 9515.6019.84.3
Jul19° / 11°8514.8018.95.3
Aug19° / 11°9914.9015.95.1
Sep14° / 10214.8012.73.6
Oct / 8715.22.89.41.3
Nov / -1°7913.27.36.20.0
Dec / -4°9415.310.74.20.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32872
42872
52872
62971
72971
82971
93070
103070
113070
123070
133070
142971
153070
163070
172971
182971
192971
202872
212971
222872
232872
242872
252773
262773
272674
282674
292773
302674
312674

Chance of precipitation in October

Any precipitationSnow

Trondheim gets around 87 mm of rain and snow over 15.2 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 48% and peaks near 51% on the wettest days, and about 3 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1482
2482
3482
4483
5483
6483
7484
8484
9475
10475
11476
12477
13477
14468
15469
164610
174710
184711
194812
204812
214913
224913
235014
245014
255114
265115
275115
285115
295115
305116
315016

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in October

Winds average 9 km/h in October.

Across October, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 hours at the start of October to 7 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 192 minutes over October. Sunrise moves from 6:37 AM to 8:08 AM, and sunset from 5:38 PM to 3:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:375:38
210.96:405:34
310.86:435:30
410.76:465:27
510.66:495:23
610.56:525:20
710.46:555:16
810.36:585:13
910.17:015:09
1010.07:045:06
119.97:075:02
129.87:104:59
139.77:134:56
149.67:164:52
159.57:194:49
169.47:224:45
179.37:254:42
189.27:284:38
199.17:314:35
209.07:344:32
218.97:374:28
228.87:404:25
238.67:434:22
248.57:464:18
258.47:494:15
268.37:524:12
278.27:564:09
288.17:594:05
298.08:024:02
307.98:053:59
317.88:083:56

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 0.99 kWh/m².

For context, solar energy here swings from a low near 0.06 kWh/m² to a high of 4.7 kWh/m² in June across the year — October's 0.99 kWh/m² falls in the middle.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.5Dim
21.5Dim
31.4Dim
41.4Dim
51.4Dim
61.3Dim
71.3Dim
81.3Dim
91.2Dim
101.2Dim
111.2Dim
121.1Dim
131.1Dim
141.1Dim
151.0Dim
161.0Dim
170.9Dim
180.9Dim
190.9Dim
200.8Dim
210.8Dim
220.8Dim
230.8Dim
240.7Dim
250.7Dim
260.7Dim
270.6Dim
280.6Dim
290.6Dim
300.6Dim
310.5Dim
Planning a trip in October

Is October a good time to visit Trondheim?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

1.3
Sightseeing
7th-best month of the year
0.0
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Trondheim.

What to pack for Trondheim in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Trondheim sees daytime highs around 8°C and nights near 3°C. Pack a warm layer and rain gear. About 15 days see rain.

a warm layerrain gear

Sea temperature near Trondheim in October

The nearest coast averages about 11°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 55 km away) is warmest in August at about 14°C and coldest in March near 5°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan6Bracing
Feb6Bracing
Mar5Bracing
Apr6Bracing
May8Bracing
Jun10Bracing
Jul13Bracing
Aug14Bracing
Sep13Bracing
Oct11Bracing
Nov9Bracing
Dec7Bracing

UV index in Trondheim in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Trondheim peaks around July 13 at about 4 (moderate) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 13UV 4Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr2Moderate
May4Moderate
Jun4Moderate
Jul5Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Trondheim?

Trondheim sits at 63.4°N, 10.4°E, 18 m above sea level, in Norway. The nearest listed city is Stjørdalshalsen, 27 km away.

MoldeÖstersundAlesundLillehammer

Topography around Trondheim

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Trondheim.

Within 3 km, the terrain around Trondheim has significant variations in elevation — a maximum elevation change of 312 m around an average of 52 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 558 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,431 m.

The land around Trondheim is covered by trees (33%), artificial surfaces (31%) and water (31%) within 3 km, water (48%) and trees (34%) within 16 km, and grassland (37%), trees (36%) and water (22%) within 80 km.

3 km
312 m
16 km
558 m
80 km
1,431 m
treesgrasslandcroplandartificial surfaceswatermoss and lichen
October weather nearby: Stjørdalshalsen 27 km · Levanger 57 km · Åre 134 km · Kristiansund 138 km · Molde 180 km · Östersund 214 km · Alesund 239 km · Lillehammer 257 km

Norway travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 91% of US
price level, 2025
GDP per capita
$94,594
2025
Happiness
7.2 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
2.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 613
Religion
Church of Norway 68%other Christian 4%Muslim 3%Roman Catholic 3%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Trondheim (63.4305°, 10.3951°, elevation 18 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).