Norrtälje in Fall
In fall (September, October and November), Norrtälje sees average daytime highs around 10°C and overnight lows near 5°C, with 149 mm of precipitation over about 29 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 17°C in early September to 4°C by late November. The sky is clear or mostly clear about 18% of the time across fall, and the air most often feels dry.
Fall is Norrtälje's 2nd-best season to visit on our travel score. For the whole year in context, see Norrtälje's year-round climate.
- Avg daytime high
- 10°C
- 2nd-warmest season
- Avg overnight low
- 5°C
- Precipitation
- 149 mm
- 29 wet days
- Avg wind
- 16 km/h
- Travel score
- 2.3
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Norrtälje in Fall
Over the season highs ease from about 17°C in early September to 4°C by late November.
A typical fall day in Norrtälje reaches about 10°C and drops to 5°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Norrtälje
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 36 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Norrtälje 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 | 0° / -3° | 36 | 8.6 | 6.5 | 6.5 | 0.0 |
| Feb | 0° / -4° | 29 | 7.3 | 7 | 8.7 | 0.0 |
| Mar | 3° / -2° | 29 | 7.4 | 5 | 11.3 | 0.0 |
| Apr | 8° / 1° | 31 | 7.8 | 2 | 14.1 | 1.4 |
| May | 13° / 5° | 39 | 8.5 | 0.1 | 16.7 | 3.8 |
| Jun | 17° / 10° | 59 | 10 | 0 | 18.2 | 5.5 |
| Jul | 20° / 13° | 62 | 10.2 | 0 | 17.6 | 6.4 |
| Aug | 20° / 13° | 64 | 11.5 | 0 | 15.3 | 6.0 |
| Sep | 15° / 9° | 50 | 9 | 0 | 12.6 | 4.6 |
| Oct | 10° / 5° | 50 | 9.7 | 0.3 | 9.8 | 2.0 |
| Nov | 5° / 2° | 49 | 10.7 | 3.1 | 7.2 | 0.2 |
| Dec | 2° / -2° | 46 | 10.8 | 6.4 | 5.8 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 18% of the time across fall.
Chance of precipitation in Fall
Norrtälje gets around 149 mm of rain and snow over 29 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 16 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 54 min in early September to 6 h 12 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 1.4 kWh/m².
Is fall a good time to visit Norrtälje?
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 Norrtälje.
What to pack for Norrtälje in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Norrtälje sees daytime highs around 10°C and nights near 5°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 29 days see rain.
Sea temperature near Norrtälje in Fall
The nearest coast averages about 10°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 18 km away) is warmest in August at about 17°C and coldest in February near 1°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) | 3 | 1 | 2 | 3 | 6 | 11 | 16 | 17 | 14 | 10 | 7 | 4 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 3 | Bracing |
| Feb | 1 | Bracing |
| Mar | 2 | Bracing |
| Apr | 3 | Bracing |
| May | 6 | Bracing |
| Jun | 11 | Bracing |
| Jul | 16 | Cool |
| Aug | 17 | Cool |
| Sep | 14 | Bracing |
| Oct | 10 | Bracing |
| Nov | 7 | Bracing |
| Dec | 4 | Bracing |
UV index in Norrtälje in Fall
Clear-sky midday UV across fall averages around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Norrtälje peaks around June 17 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 19 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 | 4 | 5 | 5 | 4 | 3 | 1 | 0 | 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 | 4 | Moderate |
| Jun | 5 | Moderate |
| Jul | 5 | Moderate |
| Aug | 4 | Moderate |
| Sep | 3 | Moderate |
| Oct | 1 | Low |
| Nov | 0 | Low |
| Dec | 0 | Low |
Where is Norrtälje?
Norrtälje sits at 59.8°N, 18.7°E, 13 m above sea level, in Sweden. The nearest listed city is Åkersberga, 38 km away.
Topography around Norrtälje
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Norrtälje.
Within 3 km, the terrain around Norrtälje has only modest variations in elevation — a maximum elevation change of 51 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 68 m; within 80 km, only modest variations in elevation — a maximum elevation change of 111 m.
The land around Norrtälje is covered by trees (43%) and grassland (23%) within 3 km, trees (61%) within 16 km, and water (53%) and trees (35%) 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 Norrtälje (59.758°, 18.705°, elevation 13 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.