Sisak weather in December

In December, Sisak sees average daytime highs of 6°C and overnight lows near -0°C, with 68 mm of precipitation across 9.8 wet days and about 8.6 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 7°C in the first days to 5°C by the end. The sky is clear or mostly clear about 20% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of December to 8 h 36 min by month's end. Set against the rest of the year, December is Sisak's 12th-clearest and 6th-windiest month. For the whole year in context, see Sisak's year-round climate.

Daytime high
11th warmest
Overnight low
-0°
3rd coldest
Precipitation
68 mm
9.8 wet days
Daylight
8 h 30 min
7:35 AM – 4:07 PM
Cloud cover
71%
12th clearest
Wind
8 km/h
6th windiest
Solar energy
1.08 kWh/m²
Travel score
0.3
out of 10
Air quality
Good
PM10 29.8 µg/m³ · 2019

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 7°C in the first days to 5°C by the end.

A typical December day in Sisak reaches about 6°C in the afternoon and slips back to -0°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between -0°C and 13°C. Set against its neighbours, December runs about 5°C cooler than November and on par with January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
172
271
371
471
571
671
761
860
960
1060
1160
1260
1360
1460
1550
1650
175-1
185-1
195-1
205-1
215-1
225-1
235-1
245-1
255-1
265-1
275-1
285-1
295-1
305-1
315-1

How December really feels in Sisak

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.

Sisak weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°558.53.98.90.1
Feb / -1°578.83.510.11.3
Mar13° / 629.91.811.63.8
Apr18° / 6910.90.313.25.6
May23° / 12°8512.3014.76.5
Jun27° / 16°7710.8015.46.5
Jul29° / 17°719.3015.15.9
Aug29° / 17°738.6013.96.2
Sep23° / 13°909.8012.36.8
Oct18° / 768.7010.75.8
Nov11° / 799.31.49.32.8
Dec / -0°689.82.68.60.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42971
52971
62971
72971
83070
93070
103070
113169
123169
133169
143169
153169
163169
173169
183169
193169
203367
213367
223367
233466
243466
253565
263565
273466
283466
293466
303466
313565

Chance of precipitation in December

Any precipitationSnow

Sisak gets around 68 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 33% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1327
2327
3327
4337
5338
6338
7338
8338
9338
10338
11338
12329
13329
14329
15319
16319
17319
18319
19319
20309
21309
22309
23309
24309
25319
26319
27319
28319
293210
303210
313210

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 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 48 min at the start of December to 8 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:21 AM to 7:41 AM, and sunset from 4:08 PM to 4:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:214:08
28.87:224:07
38.77:234:07
48.77:244:07
58.77:254:07
68.77:264:06
78.77:274:06
88.67:284:06
98.67:294:06
108.67:304:06
118.67:314:06
128.67:324:06
138.67:324:06
148.67:334:06
158.57:344:07
168.57:354:07
178.57:354:07
188.57:364:07
198.57:364:08
208.57:374:08
218.57:384:08
228.57:384:09
238.57:394:09
248.57:394:10
258.57:394:10
268.57:404:11
278.57:404:12
288.57:404:12
298.57:404:13
308.67:414:14
318.67:414:15

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.08 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.08 kWh/m² to a high of 6.01 kWh/m² in July across the year — December's 1.08 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.1Dim
21.1Dim
31.1Dim
41.1Dim
51.1Dim
61.1Dim
71.1Dim
81.1Dim
91.1Dim
101.1Dim
111.1Dim
121.1Dim
131.1Dim
141.1Dim
151.1Dim
161.1Dim
171.1Dim
181.1Dim
191.1Dim
201.1Dim
211.1Dim
221.1Dim
231.1Dim
241.1Dim
251.1Dim
261.1Dim
271.1Dim
281.1Dim
291.1Dim
301.1Dim
311.1Dim
Planning a trip in December

Is December a good time to visit Sisak?

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

0.3
Sightseeing
11th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Sisak.

What to pack for Sisak in December

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

In December, Sisak sees daytime highs around 6°C and nights near -0°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Sisak in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sisak peaks around July 14 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Sisak in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Sisak is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2317 µg/m³Sep 1912 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb15Moderate
Mar17Moderate
Apr17Moderate
May16Moderate
Jun15Moderate
Jul14Moderate
Aug14Moderate
Sep12Moderate
Oct13Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Sisak?

Sisak sits at 45.5°N, 16.4°E, 108 m above sea level, in Croatia. The nearest listed city is Velika Gorica, 36 km away.

Velika GoricaSesveteCentarZagrebVelika KladušaPrijedorBjelovarZaprešić

Topography around Sisak

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

Within 3 km, the terrain around Sisak has only modest variations in elevation — a maximum elevation change of 43 m around an average of 102 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 334 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,248 m.

The land around Sisak is covered by trees (39%) within 3 km, trees (60%) within 16 km, and trees (68%) within 80 km.

3 km
43 m
16 km
334 m
80 km
1,248 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Velika Gorica 36 km · Sesvete 45 km · Centar 50 km · Zagreb 50 km · Velika Kladuša 55 km · Prijedor 60 km · Bjelovar 60 km · Zaprešić 62 km

Croatia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 53% of US
price level, 2025
GDP per capita
$27,104
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
87%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
7.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 617
Religion
Roman Catholic 79%other Christian 5%none or atheist 5%Orthodox 3%

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 Sisak (45.4661°, 16.3775°, elevation 108 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).