Sisak weather in January

In January, Sisak sees average daytime highs of 5°C and overnight lows near -1°C, with 55 mm of precipitation across 8.5 wet days and about 8.9 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 5°C through the month. The sky is clear or mostly clear about 22% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 36 min at the start of January to 9 h 24 min by month's end. Set against the rest of the year, January is Sisak's 10th-clearest and 5th-windiest month. For the whole year in context, see Sisak's year-round climate.

Daytime high
12th warmest
Overnight low
-1°
1st coldest
Precipitation
55 mm
8.5 wet days
Daylight
8 h 54 min
7:37 AM – 4:30 PM
Cloud cover
69%
10th clearest
Wind
8 km/h
5th windiest
Solar energy
1.35 kWh/m²
Travel score
0.1
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 5°C through the month.

A typical January day in Sisak reaches about 5°C in the afternoon and slips back to -1°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between -1°C and 12°C. Set against its neighbours, January runs on par with December and about 3°C cooler than February.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
15-1
25-1
35-1
45-1
55-1
65-1
75-1
85-1
95-1
105-1
115-1
125-1
135-1
145-1
155-1
165-1
175-1
185-1
195-1
205-1
215-1
225-1
235-1
245-2
255-2
265-2
275-2
285-2
296-2
306-2
316-2

How January really feels in Sisak

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
wind chill below the day's low

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

Sisak weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 12th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% 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 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23565
33565
43565
53565
63565
73565
83565
93565
103565
113664
123664
133664
143664
153664
163565
173565
183466
193367
203367
213367
223367
233466
243466
253466
263466
273466
283565
293565
303664
313664

Chance of precipitation in January

Any precipitationSnow

Sisak gets around 55 mm of rain and snow over 8.5 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 27% and peaks near 31% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13110
23110
33010
43010
52910
62810
72810
82710
92610
102610
112610
122611
132611
142611
152612
162612
172713
182713
192714
202714
212714
222715
232715
242715
252715
262715
272715
282715
292614
302614
312614

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 8 km/h in January.

Across January, 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.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
97calm
107calm
117calm
127calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 36 min at the start of January to 9 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:40 AM to 7:25 AM, and sunset from 4:15 PM to 4:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.67:404:15
28.67:404:16
38.67:404:17
48.67:404:18
58.67:404:18
68.77:404:19
78.77:404:20
88.77:404:21
98.77:404:22
108.77:404:24
118.87:394:25
128.87:394:26
138.87:394:27
148.87:384:28
158.97:384:29
168.97:374:30
178.97:374:32
188.97:364:33
199.07:354:34
209.07:354:35
219.07:344:37
229.17:334:38
239.17:334:39
249.17:324:41
259.27:314:42
269.27:304:43
279.37:294:45
289.37:284:46
299.37:274:47
309.47:264:49
319.47:254:50

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.35 kWh/m².

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 — January's 1.35 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.2Dim
21.2Dim
31.2Dim
41.2Dim
51.2Dim
61.2Dim
71.2Dim
81.2Dim
91.3Dim
101.3Dim
111.3Dim
121.3Dim
131.3Dim
141.3Dim
151.3Dim
161.3Dim
171.4Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.5Dim
231.5Dim
241.5Dim
251.5Dim
261.6Dim
271.6Dim
281.6Dim
291.7Dim
301.7Dim
311.7Dim
Planning a trip in January

Is January a good time to visit Sisak?

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

0.1
Sightseeing
12th-best month of the year
0.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Sisak.

What to pack for Sisak in January

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

In January, Sisak sees daytime highs around 5°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

UV index in Sisak in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).