Trollhättan in Fall
In fall (September, October and November), Trollhättan sees average daytime highs around 11°C and overnight lows near 5°C, with 212 mm of precipitation over about 36 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 18°C in early September to 4°C by late November. The sky is clear or mostly clear about 19% of the time across fall, and the air most often feels dry.
Fall is Trollhättan's 3rd-best season to visit on our travel score. For the whole year in context, see Trollhättan's year-round climate.
- Avg daytime high
- 11°C
- 2nd-warmest season
- Avg overnight low
- 5°C
- Precipitation
- 212 mm
- 36 wet days
- Avg wind
- 14 km/h
- Travel score
- 2.5
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Trollhättan in Fall
Over the season highs ease from about 18°C in early September to 4°C by late November.
A typical fall day in Trollhättan reaches about 11°C and drops to 5°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Trollhättan
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 33 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Trollhättan weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 2° / -3° | 60 | 11.2 | 5.7 | 6.8 | 0.0 |
| Feb | 2° / -3° | 46 | 9.3 | 5.6 | 8.9 | 0.0 |
| Mar | 5° / -1° | 43 | 8.9 | 3.9 | 11.4 | 0.4 |
| Apr | 11° / 2° | 49 | 9.4 | 1.1 | 14 | 2.6 |
| May | 15° / 7° | 62 | 11.3 | 0.1 | 16.4 | 4.6 |
| Jun | 19° / 10° | 86 | 13.1 | 0 | 17.8 | 5.5 |
| Jul | 21° / 13° | 84 | 12.4 | 0 | 17.2 | 6.1 |
| Aug | 20° / 12° | 90 | 13.7 | 0 | 15.1 | 5.8 |
| Sep | 16° / 9° | 75 | 11.6 | 0 | 12.5 | 4.7 |
| Oct | 11° / 5° | 77 | 12.8 | 0.5 | 9.9 | 2.3 |
| Nov | 6° / 2° | 61 | 12 | 2.3 | 7.5 | 0.4 |
| Dec | 3° / -1° | 65 | 11.8 | 4.7 | 6.2 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 19% of the time across fall.
Chance of precipitation in Fall
Trollhättan gets around 212 mm of rain and snow over 36 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 14 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 48 min in early September to 6 h 36 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 1.5 kWh/m².
Is fall a good time to visit Trollhättan?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Trollhättan.
What to pack for Trollhättan in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Trollhättan sees daytime highs around 11°C and nights near 5°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 36 days see rain.
Sea temperature near Trollhättan in Fall
The nearest coast averages about 12°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 56 km away) is warmest in August at about 18°C and coldest in February near 3°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 4 | 3 | 3 | 6 | 11 | 15 | 17 | 18 | 15 | 12 | 9 | 6 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 4 | Bracing |
| Feb | 3 | Bracing |
| Mar | 3 | Bracing |
| Apr | 6 | Bracing |
| May | 11 | Bracing |
| Jun | 15 | Bracing |
| Jul | 17 | Cool |
| Aug | 18 | Cool |
| Sep | 15 | Cool |
| Oct | 12 | Bracing |
| Nov | 9 | Bracing |
| Dec | 6 | Bracing |
UV index in Trollhättan in Fall
Clear-sky midday UV across fall averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Trollhättan peaks around June 17 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 20 at about 0 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 0 | 1 | 2 | 3 | 5 | 5 | 5 | 4 | 3 | 1 | 1 | 0 |
| Level | Low | Low | Low | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 0 | Low |
| Feb | 1 | Low |
| Mar | 2 | Low |
| Apr | 3 | Moderate |
| May | 5 | Moderate |
| Jun | 5 | Moderate |
| Jul | 5 | Moderate |
| Aug | 4 | Moderate |
| Sep | 3 | Moderate |
| Oct | 1 | Low |
| Nov | 1 | Low |
| Dec | 0 | Low |
Where is Trollhättan?
Trollhättan sits at 58.3°N, 12.3°E, 49 m above sea level, in Sweden. The nearest listed city is Vänersborg, 11 km away.
Topography around Trollhättan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Trollhättan.
Within 3 km, the terrain around Trollhättan has only modest variations in elevation — a maximum elevation change of 107 m around an average of 57 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 186 m; within 80 km, significant variations in elevation — a maximum elevation change of 343 m.
The land around Trollhättan is covered by trees (50%) and artificial surfaces (24%) within 3 km, trees (63%) within 16 km, and trees (50%) and water (28%) within 80 km.
Sweden travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 87% of US
- price level, 2025
- GDP per capita
- $63,133
- 2025
- Happiness
- 7.3 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2023
- Road deaths
- 3.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 609
- Religion
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 Trollhättan (58.2837°, 12.2886°, elevation 49 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.