Kajaani weather in December

In December, Kajaani sees average daytime highs of -4°C and overnight lows near -9°C, with 47 mm of precipitation across 11.6 wet days and about 3.8 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about -2°C in the first days to -6°C by the end. The sky is clear or mostly clear about 6% of the time in December, and the air most often feels dry.

Daylight stretches from about 4 h 30 min at the start of December to 3 h 42 min by month's end. Set against the rest of the year, December is Kajaani's 11th-clearest and 1st-windiest month. For the whole year in context, see Kajaani's year-round climate.

Daytime high
-4°
10th warmest
Overnight low
-9°
3rd coldest
Precipitation
47 mm
11.6 wet days
Daylight
3 h 36 min
10:18 AM – 1:52 PM
Cloud cover
89%
11th clearest
Wind
13 km/h
1st windiest
Solar energy
0.04 kWh/m²
Travel score
0.0
out of 10

Kajaani is urban area and center of Kajaani, Kainuu, Finland.

Air quality
Excellent
PM10 13.8 µg/m³ · 2018

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about -2°C in the first days to -6°C by the end.

A typical December day in Kajaani reaches about -4°C in the afternoon and slips back to -9°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -12°C and 2°C. Set against its neighbours, December runs about 3°C cooler than November and about 3°C warmer than January.

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

How December really feels in Kajaani

Once humidity and wind are folded in, December 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 December is cold — wind chill drags the overnight "feels like" below the raw low.

Kajaani weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-7° / -12°369.311.24.90.0
Feb-6° / -12°298.69.67.90.0
Mar-1° / -8°328.79.511.20.0
Apr / -3°328.65.714.60.3
May11° / 5510.91.317.92.7
Jun17° / 7412.90.120.24.8
Jul19° / 12°9214.1019.25.5
Aug17° / 11°7412.8016.15.1
Sep12° / 6411.80.112.72.8
Oct / 5711.83.89.30.3
Nov-1° / -4°5211.18.760.0
Dec-4° / -9°4711.6123.80.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 4% of December, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
141090
151090
161090
171090
181090
191189
201189
211189
221189
231189
241189
251189
261189
271288
281189
291189
301189
311189

Chance of precipitation in December

Any precipitationSnow

Kajaani gets around 47 mm of rain and snow over 11.6 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 39% on the wettest days, and about 12 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13936
23936
33937
43937
53938
63938
73938
83939
93939
103939
113839
123839
133838
143738
153738
163638
173638
183638
193638
203638
213538
223538
233538
243538
253538
263538
273438
283438
293438
303338
313338

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December 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 December

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

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

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light 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 December

DaylightNight

Daylight runs from about 4 h 30 min at the start of December to 3 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over December. Sunrise moves from 9:45 AM to 10:22 AM, and sunset from 2:13 PM to 2:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
14.59:452:13
24.49:482:11
34.39:502:09
44.29:532:07
54.29:562:05
64.19:582:03
74.010:012:02
84.010:032:00
93.910:051:59
103.810:071:58
113.810:101:56
123.710:121:55
133.710:131:54
143.610:151:54
153.610:171:53
163.610:181:52
173.510:191:52
183.510:211:52
193.510:221:52
203.510:221:52
213.510:231:52
223.510:241:52
233.510:241:53
243.510:241:54
253.510:241:55
263.510:241:56
273.510:241:57
283.610:241:58
293.610:231:59
303.610:232:01
313.710:222:03

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.04 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.04 kWh/m² to a high of 5.16 kWh/m² in June across the year — December's 0.04 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
100.0Dim
110.0Dim
120.0Dim
130.0Dim
140.0Dim
150.0Dim
160.0Dim
170.0Dim
180.0Dim
190.0Dim
200.0Dim
210.0Dim
220.0Dim
230.0Dim
240.0Dim
250.0Dim
260.0Dim
270.0Dim
280.0Dim
290.0Dim
300.0Dim
310.0Dim
Planning a trip in December

Is December a good time to visit Kajaani?

Our two travel scores rate December 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

December is a weaker month for outdoor sightseeing in Kajaani.

What to pack for Kajaani in December

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

In December, Kajaani sees daytime highs around -4°C and nights near -9°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

UV index in Kajaani in December

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Kajaani peaks around July 15 at about 4 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 15UV 4Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb0Low
Mar1Low
Apr3Moderate
May4Moderate
Jun4Moderate
Jul5Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Kajaani?

Kajaani sits at 64.2°N, 27.7°E, 145 m above sea level, in Finland. The nearest listed city is Iisalmi, 79 km away.

IisalmiSiilinjärviOuluKostomukshaKuopioHaukipudasYlivieskaRaahe

Topography around Kajaani

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

Within 3 km, the terrain around Kajaani has only modest variations in elevation — a maximum elevation change of 84 m around an average of 154 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 165 m; within 80 km, significant variations in elevation — a maximum elevation change of 377 m.

The land around Kajaani is covered by trees (66%) within 3 km, trees (66%) and water (25%) within 16 km, and trees (79%) within 80 km.

3 km
84 m
16 km
165 m
80 km
377 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Iisalmi 79 km · Siilinjärvi 127 km · Oulu 139 km · Kostomuksha 142 km · Kuopio 148 km · Haukipudas 155 km · Ylivieska 155 km · Raahe 164 km

Finland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 85% of US
price level, 2025
GDP per capita
$56,149
2025
Happiness
7.8 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 603
Religion
Lutheran 67%none 31%other 2%Greek Orthodox 1%

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 Kajaani (64.2273°, 27.7285°, elevation 145 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. 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).