Sundsvall weather in January

In January, Sundsvall sees average daytime highs of -3°C and overnight lows near -9°C, with 48 mm of precipitation across 9.8 wet days and about 5.6 hours of daylight. It is the 12th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near -3°C through the month. The sky is clear or mostly clear about 17% of the time in January, and the air most often feels dry.

Daylight stretches from about 4 h 42 min at the start of January to 6 h 48 min by month's end. Set against the rest of the year, January is Sundsvall's 11th-clearest and 1st-windiest month. For the whole year in context, see Sundsvall's year-round climate.

Daytime high
-3°
12th warmest
Overnight low
-9°
2nd coldest
Precipitation
48 mm
9.8 wet days
Daylight
5 h 36 min
9:13 AM – 2:47 PM
Cloud cover
74%
11th clearest
Wind
13 km/h
1st windiest
Solar energy
0.22 kWh/m²
Travel score
0.0
out of 10

Sundsvall is urban area in Sundsvall Municipality, Sweden.

Air quality
Good
PM2.5 5.8 µg/m³ · 2019
Founded
1621

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near -3°C through the month.

A typical January day in Sundsvall reaches about -3°C in the afternoon and slips back to -9°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between -10°C and 4°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

-20°-15°-10°-5°151015202531
Avg high (°C)Avg low (°C)
1-2-8
2-2-8
3-2-8
4-2-8
5-2-8
6-2-8
7-2-8
8-2-8
9-2-8
10-2-8
11-2-8
12-2-8
13-2-8
14-2-8
15-2-8
16-2-8
17-3-8
18-3-8
19-3-8
20-3-9
21-3-9
22-3-9
23-3-9
24-3-9
25-3-9
26-3-9
27-3-9
28-3-9
29-3-9
30-3-9
31-3-9

How January really feels in Sundsvall

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 31 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
31
31 feel bitter (≤ -10°C)

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

Sundsvall weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -9°489.89.65.60.0
Feb-2° / -9°347.88.48.30.0
Mar / -6°357.3711.30.0
Apr / -1°377.94.314.41.2
May13° / 449.80.617.33.6
Jun17° / 5810.6019.25.4
Jul20° / 11°7312.1018.55.9
Aug19° / 10°7511.7015.75.7
Sep14° / 559.6012.64.0
Oct / 6310.21.99.51.0
Nov / -3°5310.66.56.60.0
Dec-1° / -7°5010.58.94.70.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

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

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
32971
42872
52971
62971
72872
82872
92971
102971
112971
123070
133070
142971
152971
163070
173070
182971
192971
202971
212872
222872
232872
242872
252872
262872
272773
282872
292872
302872
312773

Chance of precipitation in January

Any precipitationSnow

Sundsvall gets around 48 mm of rain and snow over 9.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 38% on the wettest days, and about 10 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13737
23837
33837
43737
53737
63736
73636
83535
93534
103433
113333
123232
133131
143130
153029
162929
172928
182828
192827
202827
212827
222827
232828
242828
252829
262929
272930
282931
293031
303031
313032

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January 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 January

Winds average 13 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 4 h 42 min at the start of January to 6 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 126 minutes over January. Sunrise moves from 9:32 AM to 8:39 AM, and sunset from 2:15 PM to 3:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
14.79:322:15
24.89:322:17
34.89:312:19
44.89:302:20
54.99:292:22
64.99:282:24
75.09:272:26
85.09:262:28
95.19:242:30
105.29:232:33
115.29:212:35
125.39:202:37
135.49:182:40
145.49:172:42
155.59:152:45
165.69:132:47
175.69:112:50
185.79:092:52
195.89:072:55
205.99:052:58
216.09:033:01
226.09:013:03
236.18:583:06
246.28:563:09
256.38:543:12
266.48:513:15
276.58:493:18
286.68:463:21
296.78:443:23
306.88:413:26
316.88:393:29

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.22 kWh/m².

For context, solar energy here swings from a low near 0.1 kWh/m² to a high of 5.57 kWh/m² in June across the year — January's 0.22 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.1Dim
20.1Dim
30.1Dim
40.1Dim
50.1Dim
60.1Dim
70.1Dim
80.1Dim
90.1Dim
100.2Dim
110.2Dim
120.2Dim
130.2Dim
140.2Dim
150.2Dim
160.2Dim
170.2Dim
180.2Dim
190.2Dim
200.3Dim
210.3Dim
220.3Dim
230.3Dim
240.3Dim
250.3Dim
260.3Dim
270.4Dim
280.4Dim
290.4Dim
300.4Dim
310.4Dim
Planning a trip in January

Is January a good time to visit Sundsvall?

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

0.0
Sightseeing
8th-best month of the year
0.0
Beach & pool
6th-best month of the year

January is a weaker month for outdoor sightseeing in Sundsvall.

What to pack for Sundsvall in January

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

In January, Sundsvall sees daytime highs around -3°C and nights near -9°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Sundsvall in January

The nearest coast averages about 2°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 km away) is warmest in August at about 16°C and coldest in February near 1°C.

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

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May6Bracing
Jun10Bracing
Jul15Cool
Aug16Cool
Sep13Bracing
Oct9Bracing
Nov5Bracing
Dec3Bracing

UV index in Sundsvall in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sundsvall peaks around June 18 at about 4 (moderate) — a little sun protection helps at midday. It bottoms out near December 17 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 18UV 4Dec 17UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar1Low
Apr2Moderate
May4Moderate
Jun5Moderate
Jul4Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Sundsvall?

Sundsvall sits at 62.4°N, 17.3°E, 26 m above sea level, in Sweden. The nearest listed city is Härnösand, 42 km away.

ÖrnsköldsvikÖstersundGävleSandvikenFalunUmeå

Topography around Sundsvall

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

Within 3 km, the terrain around Sundsvall has only modest variations in elevation — a maximum elevation change of 241 m around an average of 70 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 343 m; within 80 km, significant variations in elevation — a maximum elevation change of 549 m.

The land around Sundsvall is covered by trees (54%) and artificial surfaces (29%) within 3 km, trees (61%) and water (23%) within 16 km, and trees (66%) and water (28%) within 80 km.

3 km
241 m
16 km
343 m
80 km
549 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Härnösand 42 km · Hudiksvall 75 km · Örnsköldsvik 123 km · Östersund 162 km · Gävle 191 km · Sandviken 199 km · Falun 218 km · Umeå 218 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
Church of Sweden 54%none or unspecified 37%other 9%

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 Sundsvall (62.3913°, 17.3063°, elevation 26 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).