Savonlinna weather in December

In December, Savonlinna sees average daytime highs of -3°C and overnight lows near -6°C, with 48 mm of precipitation across 11.8 wet days and about 5 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about -1°C in the first days to -4°C by the end. The sky is clear or mostly clear about 5% of the time in December, and the air most often feels dry.

Daylight stretches from about 5 h 30 min at the start of December to 4 h 54 min by month's end. Set against the rest of the year, December is Savonlinna's 12th-clearest and 1st-windiest month. For the whole year in context, see Savonlinna's year-round climate.

Daytime high
-3°
10th warmest
Overnight low
-6°
3rd coldest
Precipitation
48 mm
11.8 wet days
Daylight
4 h 48 min
9:36 AM – 2:26 PM
Cloud cover
89%
12th clearest
Wind
15 km/h
1st windiest
Solar energy
0.11 kWh/m²
Travel score
0.0
out of 10
Air quality
Excellent
PM10 13 µg/m³ · 2017

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 -1°C in the first days to -4°C by the end.

A typical December day in Savonlinna reaches about -3°C in the afternoon and slips back to -6°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -10°C and 3°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

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

How December really feels in Savonlinna

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
25 feel bitter (≤ -10°C)

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

Savonlinna 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-5° / -9°3810.3125.80.0
Feb-5° / -10°328.9108.30.0
Mar-0° / -6°338.98.911.30.0
Apr / -1°328.43.914.30.6
May14° / 499.50.417.23.9
Jun18° / 12°7412.60195.4
Jul21° / 14°8113.2018.35.9
Aug19° / 13°7112015.75.6
Sep13° / 5410.4012.63.5
Oct / 5510.929.60.7
Nov / -2°50116.76.70.0
Dec-3° / -6°4811.810.950.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of December, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
41090
51090
61090
71090
81090
9991
10991
11991
12991
13991
14991
15991
16991
17892
18892
19892
20892
21892
22991
23991
24991
251090
261090
271090
281090
291090
301090
311189

Chance of precipitation in December

Any precipitationSnow

Savonlinna gets around 48 mm of rain and snow over 11.8 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 11 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13832
23832
33933
43933
53933
63933
73933
83933
93833
103833
113733
123733
133633
143633
153633
163533
173534
183534
193534
203535
213535
223636
233636
243637
253637
263637
273637
283637
293637
303537
313537

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 15 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 14 km/h on the calmest days to 15 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
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 5 h 30 min at the start of December to 4 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over December. Sunrise moves from 9:10 AM to 9:40 AM, and sunset from 2:39 PM to 2:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
15.59:102:39
25.49:122:37
35.49:142:36
45.39:162:35
55.39:182:33
65.29:202:32
75.29:222:31
85.19:242:30
95.19:262:29
105.09:272:29
115.09:292:28
124.99:302:27
134.99:322:27
144.99:332:26
154.99:342:26
164.89:362:26
174.89:372:26
184.89:372:26
194.89:382:26
204.89:392:26
214.89:402:26
224.89:402:27
234.89:412:27
244.89:412:28
254.89:412:29
264.89:412:29
274.89:412:30
284.89:412:31
294.99:412:33
304.99:412:34
314.99:402:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.11 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.11 kWh/m² to a high of 5.37 kWh/m² in June across the year — December's 0.11 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
100.1Dim
110.1Dim
120.1Dim
130.1Dim
140.1Dim
150.1Dim
160.1Dim
170.1Dim
180.1Dim
190.1Dim
200.1Dim
210.1Dim
220.1Dim
230.1Dim
240.1Dim
250.1Dim
260.1Dim
270.1Dim
280.1Dim
290.1Dim
300.1Dim
310.1Dim
Planning a trip in December

Is December a good time to visit Savonlinna?

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 Savonlinna.

What to pack for Savonlinna in December

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

In December, Savonlinna sees daytime highs around -3°C and nights near -6°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 Savonlinna 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 Savonlinna peaks around July 13 at about 5 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 13UV 5Dec 17UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar1Low
Apr3Moderate
May4Moderate
Jun5Moderate
Jul5Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Savonlinna?

Savonlinna sits at 61.9°N, 28.9°E, 75 m above sea level, in Finland. The nearest listed city is Varkaus, 72 km away.

VarkausImatraSvetogorskMikkeliJoensuuLappeenrantaSortavalaPieksämäki

Topography around Savonlinna

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

Within 3 km, the terrain around Savonlinna has only modest variations in elevation — a maximum elevation change of 72 m around an average of 83 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 89 m; within 80 km, only modest variations in elevation — a maximum elevation change of 200 m.

The land around Savonlinna is covered by water (54%) and trees (34%) within 3 km, trees (58%) and water (35%) within 16 km, and trees (70%) and water (26%) within 80 km.

3 km
72 m
16 km
89 m
80 km
200 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Varkaus 72 km · Imatra 78 km · Svetogorsk 84 km · Mikkeli 87 km · Joensuu 93 km · Lappeenranta 97 km · Sortavala 98 km · Pieksämäki 103 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 Savonlinna (61.8699°, 28.88°, elevation 75 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).