Oskarshamn weather in December

In December, Oskarshamn sees average daytime highs of 3°C and overnight lows near -1°C, with 42 mm of precipitation across 9.8 wet days and about 6.5 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 4°C in the first days to 2°C by the end. The sky is clear or mostly clear about 14% of the time in December, and the air most often feels dry.

Daylight stretches from about 6 h 48 min at the start of December to 6 h 24 min by month's end. Set against the rest of the year, December is Oskarshamn's 11th-clearest and 2nd-windiest month. For the whole year in context, see Oskarshamn's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
4th coldest
Precipitation
42 mm
9.8 wet days
Daylight
6 h 24 min
8:39 AM – 3:02 PM
Cloud cover
77%
11th clearest
Wind
16 km/h
2nd windiest
Solar energy
0.3 kWh/m²
Travel score
0.0
out of 10

Oskarshamn is urban area in Oskarshamn Municipality, Sweden.

Founded
1856

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 4°C in the first days to 2°C by the end.

A typical December day in Oskarshamn reaches about 3°C in the afternoon and slips back to -1°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -2°C and 8°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer than January.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
141
241
341
441
541
641
740
840
940
1040
1140
1240
1330
1430
153-1
163-1
173-1
183-1
193-1
203-1
213-1
223-1
232-2
242-2
252-2
262-2
272-2
282-2
292-2
302-2
312-2

How December really feels in Oskarshamn

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
wind chill below the day's low

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

Oskarshamn 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 / -2°338.65.47.10.0
Feb / -3°3185.790.0
Mar / -1°287.83.111.40.4
Apr11° / 297.10.913.92.7
May16° / 469.9016.25.0
Jun20° / 10°5710.6017.56.0
Jul22° / 13°7010.80176.6
Aug22° / 13°5810.60156.4
Sep17° / 448.4012.55.5
Oct11° / 489.90.1102.8
Nov / 5010.41.97.70.6
Dec / -1°429.83.86.50.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11783
21882
31783
41882
51882
61882
71981
81981
91981
102080
112179
122179
132179
142278
152377
162377
172476
182575
192575
202575
212674
222674
232773
242773
252773
262872
272872
282872
292872
302872
312872

Chance of precipitation in December

Any precipitationSnow

Oskarshamn gets around 42 mm of rain and snow over 9.8 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 32% and peaks near 35% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13210
23310
33310
43410
53411
63411
73511
83511
93511
103511
113411
123411
133311
143311
153211
163211
173112
183112
193112
203013
213013
222913
232914
242914
252914
262915
272915
282915
293016
303016
313017

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 16 km/h in December.

Across December, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 6 h 48 min at the start of December to 6 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over December. Sunrise moves from 8:19 AM to 8:44 AM, and sunset from 3:09 PM to 3:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
16.88:193:09
26.88:213:08
36.78:223:07
46.78:243:06
56.78:253:06
66.68:273:05
76.68:283:04
86.68:303:04
96.58:313:03
106.58:323:03
116.58:343:03
126.58:353:02
136.48:363:02
146.48:373:02
156.48:383:02
166.48:393:02
176.48:403:02
186.48:403:02
196.48:413:02
206.38:423:03
216.38:423:03
226.38:433:04
236.38:433:04
246.38:443:05
256.48:443:05
266.48:443:06
276.48:443:07
286.48:443:08
296.48:443:09
306.48:443:09
316.48:443:11

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.3 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.3 kWh/m² to a high of 5.89 kWh/m² in June across the year — December's 0.3 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.3Dim
20.3Dim
30.3Dim
40.3Dim
50.3Dim
60.3Dim
70.3Dim
80.3Dim
90.3Dim
100.3Dim
110.3Dim
120.3Dim
130.3Dim
140.3Dim
150.3Dim
160.3Dim
170.3Dim
180.3Dim
190.3Dim
200.3Dim
210.3Dim
220.3Dim
230.3Dim
240.3Dim
250.3Dim
260.3Dim
270.3Dim
280.3Dim
290.3Dim
300.3Dim
310.3Dim
Planning a trip in December

Is December a good time to visit Oskarshamn?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Oskarshamn.

What to pack for Oskarshamn in December

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

In December, Oskarshamn sees daytime highs around 3°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Oskarshamn in December

The nearest coast averages about 5°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in August at about 18°C and coldest in March near 2°C.

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

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan3Bracing
Feb2Bracing
Mar2Bracing
Apr4Bracing
May8Bracing
Jun13Bracing
Jul17Cool
Aug18Cool
Sep15Bracing
Oct11Bracing
Nov7Bracing
Dec5Bracing

UV index in Oskarshamn 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 Oskarshamn peaks around June 17 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 17UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May5Moderate
Jun6High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Oskarshamn?

Oskarshamn sits at 57.3°N, 16.4°E, 22 m above sea level, in Sweden. The nearest listed city is Västervik, 56 km away.

VäxjöNässjöVisbyKarlskronaLinköpingHuskvarna

Topography around Oskarshamn

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

Within 3 km, the terrain around Oskarshamn has only modest variations in elevation — a maximum elevation change of 62 m around an average of 20 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 103 m; within 80 km, significant variations in elevation — a maximum elevation change of 318 m.

The land around Oskarshamn is covered by trees (59%) within 3 km, trees (57%) and water (36%) within 16 km, and trees (54%) and water (35%) within 80 km.

3 km
62 m
16 km
103 m
80 km
318 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Västervik 56 km · Kalmar 67 km · Växjö 108 km · Nässjö 113 km · Visby 118 km · Karlskrona 133 km · Linköping 137 km · Huskvarna 141 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 Oskarshamn (57.2645°, 16.4484°, elevation 22 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).