Siyazan weather in December

In December, Siyazan sees average daytime highs of 6°C and overnight lows near -1°C, with 39 mm of precipitation across 8.3 wet days and about 9.1 hours of daylight. It is the 10th-warmest and 8th-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 30% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of December to 9 h 06 min by month's end. Set against the rest of the year, December is Siyazan's 7th-clearest and 11th-windiest month. For the whole year in context, see Siyazan's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
3rd coldest
Precipitation
39 mm
8.3 wet days
Daylight
9 h 06 min
8:08 AM – 5:11 PM
Cloud cover
60%
7th clearest
Wind
7 km/h
11th windiest
Solar energy
1.66 kWh/m²
Travel score
0.3
out of 10

Siyazan is city in Azerbaijan.

Density
34/km²
people per km²
Founded
1954

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 Siyazan reaches about 6°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 0°C and 11°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
171
271
370
470
570
660
760
860
960
1060
116-1
126-1
136-1
146-1
156-1
166-1
175-1
185-1
195-1
205-1
215-1
225-1
235-1
245-1
255-2
265-2
275-2
285-2
295-2
305-2
315-2

How December really feels in Siyazan

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.

Siyazan 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 / -3°368.47.39.40.0
Feb / -3°439.18.310.40.1
Mar / 469.15.611.71.9
Apr14° / 4591.313.14.2
May20° / 11°4510014.36.3
Jun25° / 15°347.1014.97.6
Jul28° / 18°204.1014.77.6
Aug28° / 18°245.5013.67.3
Sep23° / 14°477.7012.37.3
Oct17° / 559.70.610.95.6
Nov10° / 539.43.39.72.3
Dec / -1°398.35.79.10.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54060
64159
74159
84159
94258
104258
114258
124357
134357
144357
154357
164456
174654
184753
194852
204753
214951
225050
235149
245149
255149
265149
275149
285248
295248
305050
315050

Chance of precipitation in December

Any precipitationSnow

Siyazan gets around 39 mm of rain and snow over 8.3 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 27% and peaks near 31% on the wettest days, and about 6 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13118
23018
33018
42918
52918
62918
72918
82818
92818
102818
112818
122818
132818
142818
152718
162718
172719
182719
192719
202619
212619
222518
232518
242518
252418
262418
272417
282317
292317
302317
312318

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 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 7 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
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 06 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 7:55 AM to 8:14 AM, and sunset from 5:11 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:555:11
29.27:565:11
39.27:575:11
49.27:585:11
59.27:595:10
69.28:005:10
79.28:015:10
89.18:025:10
99.18:035:10
109.18:045:10
119.18:045:10
129.18:055:11
139.18:065:11
149.18:075:11
159.18:075:11
169.18:085:11
179.18:095:12
189.08:095:12
199.08:105:12
209.08:105:13
219.08:115:13
229.08:115:14
239.08:125:14
249.08:125:15
259.08:135:15
269.08:135:16
279.18:135:16
289.18:145:17
299.18:145:18
309.18:145:18
319.18:145:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.66 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.66 kWh/m² to a high of 6.43 kWh/m² in July across the year — December's 1.66 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.6Dim
61.6Dim
71.6Dim
81.6Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.6Dim
141.6Dim
151.6Dim
161.6Dim
171.6Dim
181.6Dim
191.7Dim
201.7Dim
211.7Dim
221.7Dim
231.7Dim
241.7Dim
251.7Dim
261.7Dim
271.7Dim
281.7Dim
291.7Dim
301.7Dim
311.7Dim
Planning a trip in December

Is December a good time to visit Siyazan?

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

0.3
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Siyazan.

What to pack for Siyazan in December

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

In December, Siyazan sees daytime highs around 6°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 8 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Siyazan in December

The nearest coast averages about 10°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 22 km away) is warmest in August at about 26°C and coldest in February near 7°C.

It's comfortable for a long swim from Jun 15 to Oct 6 — about 3.7 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb7Bracing
Mar7Bracing
Apr9Bracing
May14Bracing
Jun20Refreshing
Jul24Warm
Aug26Warm
Sep23Refreshing
Oct19Cool
Nov14Bracing
Dec10Bracing

UV index in Siyazan in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siyazan peaks around July 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateLowJul 19UV 9Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar3Moderate
Apr5High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5Moderate
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Siyazan 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 Siyazan is worst in September — around 20 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1119 µg/m³Dec 197 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar17Moderate
Apr16Moderate
May16Moderate
Jun13Moderate
Jul15Moderate
Aug18Moderate
Sep20Moderate
Oct14Moderate
Nov10Good
Dec7Good
Location & terrain

Where is Siyazan?

Siyazan sits at 41.1°N, 49.1°E, 34 m above sea level, in Azerbaijan. The nearest listed city is Divichibazar, 17 km away.

XaçmazQubaHaji ZeynalabdinShemakhaQusarSumqayitJorat

Topography around Siyazan

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

Within 3 km, the terrain around Siyazan has only modest variations in elevation — a maximum elevation change of 248 m around an average of 49 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,101 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,652 m.

The land around Siyazan is covered by grassland (42%), cropland (28%) and artificial surfaces (20%) within 3 km, grassland (48%) and water (27%) within 16 km, and water (42%) and grassland (31%) within 80 km.

3 km
248 m
16 km
1,101 m
80 km
3,652 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Divichibazar 17 km · Xaçmaz 50 km · Quba 59 km · Haji Zeynalabdin 63 km · Shemakha 64 km · Qusar 69 km · Sumqayit 72 km · Jorat 75 km

Azerbaijan travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 28% of US
price level, 2025
GDP per capita
$7,411
2025
Happiness
5.0 / 10
World Happiness, 2025
Safe drinking water
58%
of population, 2024
Homicide rate
2.2
per 100k, 2023
Road deaths
6.7
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 454
Religion
Muslim 97%Christian 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 Siyazan (41.0781°, 49.1156°, elevation 34 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. 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).