Dej weather in January

In January, Dej sees average daytime highs of 0°C and overnight lows near -5°C, with 48 mm of precipitation across 10 wet days and about 8.7 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 0°C through the month. The sky is clear or mostly clear about 20% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 24 min at the start of January to 9 h 12 min by month's end. Set against the rest of the year, January is Dej's 11th-clearest and 7th-windiest month. For the whole year in context, see Dej's year-round climate.

Daytime high
12th warmest
Overnight low
-5°
1st coldest
Precipitation
48 mm
10 wet days
Daylight
8 h 42 min
8:13 AM – 4:54 PM
Cloud cover
71%
11th clearest
Wind
8 km/h
7th windiest
Solar energy
1.26 kWh/m²
Travel score
0.0
out of 10

Dej is locality in Cluj County, Romania.

Air quality
Good
PM10 24.8 µg/m³ · 2019
Founded
1061

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 0°C through the month.

A typical January day in Dej reaches about 0°C in the afternoon and slips back to -5°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between -5°C and 6°C. Set against its neighbours, January runs about 1°C cooler than December and about 3°C cooler than February.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
10-5
20-5
30-5
40-5
50-5
60-5
70-5
80-5
90-5
101-5
111-5
121-5
131-5
141-5
151-5
161-5
170-5
180-5
190-5
200-5
210-5
220-5
230-6
240-6
250-6
260-6
270-6
280-6
291-6
301-6
311-5

How January really feels in Dej

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.

Dej weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°48107.78.70.0
Feb / -4°469.75.9100.0
Mar / -0°5910.73.311.61.7
Apr15° / 68120.813.34.4
May20° / 8915014.85.6
Jun23° / 13°10114.5015.66.2
Jul25° / 14°9414.1015.36.3
Aug25° / 14°6910.60146.9
Sep20° / 10°7310.4012.46.3
Oct14° / 659.80.310.64.3
Nov / 549.73.19.11.2
Dec / -3°57105.78.40.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 10% of January, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32872
42872
52872
62971
72971
83070
93070
103169
113268
123268
133367
143367
153466
163466
173565
183367
193367
203367
213367
223268
233169
243169
253070
263070
272971
282971
292971
302971
312872

Chance of precipitation in January

Any precipitationSnow

Dej gets around 48 mm of rain and snow over 10 wet days in January. 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 8 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13323
23323
33223
43223
53223
63123
73123
83123
93123
103123
113023
123023
133023
143123
153123
163123
173123
183124
193124
203225
213225
223225
233326
243326
253426
263427
273427
283527
293527
303527
313527

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 8 km/h on the calmest days to 9 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
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
319calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 24 min at the start of January to 9 h 12 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 8:17 AM to 8:00 AM, and sunset from 4:38 PM to 5:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.48:174:38
28.48:174:39
38.48:174:40
48.48:174:41
58.48:174:42
68.48:174:43
78.58:174:44
88.58:174:45
98.58:164:46
108.58:164:47
118.58:164:48
128.68:154:49
138.68:154:51
148.68:144:52
158.78:144:53
168.78:134:54
178.78:134:56
188.78:124:57
198.88:114:58
208.88:115:00
218.98:105:01
228.98:095:02
238.98:085:04
249.08:075:05
259.08:075:07
269.08:065:08
279.18:055:09
289.18:045:11
299.28:035:12
309.28:015:14
319.28:005:15

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.26 kWh/m².

For context, solar energy here swings from a low near 0.99 kWh/m² to a high of 5.87 kWh/m² in June across the year — January's 1.26 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.0Dim
21.0Dim
31.1Dim
41.1Dim
51.1Dim
61.1Dim
71.1Dim
81.1Dim
91.1Dim
101.1Dim
111.2Dim
121.2Dim
131.2Dim
141.2Dim
151.3Dim
161.3Dim
171.3Dim
181.3Dim
191.3Dim
201.4Dim
211.4Dim
221.4Dim
231.4Dim
241.4Dim
251.5Dim
261.5Dim
271.5Dim
281.5Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in January

Is January a good time to visit Dej?

Our two travel scores rate January 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

January is a weaker month for outdoor sightseeing in Dej.

What to pack for Dej in January

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

In January, Dej sees daytime highs around 0°C and nights near -5°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Dej 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 Dej peaks around July 15 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 15UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Dej?

Dej sits at 47.1°N, 23.9°E, 231 m above sea level, in Romania. The nearest listed city is Gherla, 14 km away.

Cluj-NapocaBistriţaBaia SprieBaia MareZalăuTurdaCâmpia Turzii

Topography around Dej

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

Within 3 km, the terrain around Dej has only modest variations in elevation — a maximum elevation change of 205 m around an average of 278 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 588 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,127 m.

The land around Dej is covered by grassland (30%), trees (29%) and cropland (24%) within 3 km, trees (46%) and grassland (37%) within 16 km, and trees (46%) and grassland (37%) within 80 km.

3 km
205 m
16 km
588 m
80 km
2,127 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Gherla 14 km · Cluj-Napoca 47 km · Bistriţa 48 km · Baia Sprie 58 km · Baia Mare 61 km · Zalău 62 km · Turda 65 km · Câmpia Turzii 67 km

Romania travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 44% of US
price level, 2025
GDP per capita
$22,538
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
82%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
10.3
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 605
Religion
Romanian Orthodox 85%other 5%Roman Catholic 5%Reformed 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 Dej (47.15°, 23.8667°, elevation 231 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).