Siyazan weather in May

In May, Siyazan sees average daytime highs of 20°C and overnight lows near 11°C, with 45 mm of precipitation across 10 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 22°C by the end. The sky is clear or mostly clear about 30% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of May to 14 h 42 min by month's end. Set against the rest of the year, May is Siyazan's 6th-clearest and 9th-windiest month. For the whole year in context, see Siyazan's year-round climate.

Daytime high
20°
5th warmest
Overnight low
11°
8th coldest
Precipitation
45 mm
10 wet days
Daylight
14 h 18 min
5:31 AM – 7:49 PM
Cloud cover
58%
6th clearest
Wind
7 km/h
9th windiest
Solar energy
5.64 kWh/m²
Travel score
6.3
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 22°C by the end.

A typical May day in Siyazan reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, May runs about 6°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1178
2178
3178
4179
5189
6189
7189
8189
91910
101910
111910
121910
131910
142011
152011
162011
172011
182011
192111
202111
212112
222112
232112
242212
252212
262212
272213
282213
292213
302313
312313

How May really feels in Siyazan

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Siyazan weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 5th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34060
44159
54159
64159
74258
84258
94357
104357
114456
124555
134654
144753
154753
164951
175050
185149
195248
205248
215446
225545
235644
245743
255842
265842
275941
285941
295941
306139
316139

Chance of precipitation in May

Any precipitationSnow

Siyazan gets around 45 mm of rain and snow over 10 wet days in May. 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.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1332
2331
3331
4331
5331
6331
7340
8340
9340
10340
11350
12350
13340
14340
15340
16340
17330
18330
19330
20320
21320
22310
23300
24300
25290
26290
27280
28280
29280
30270
31270

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69820
79820
89730
99730
109730
119640
129640
139550
149550
159460
169370
179280
189280
1990100
2089110
2187121
2286131
2384151
2483161
2582171
2680191
2778202
2876222
2975232
3073252
3172262

Wind in May

Winds average 7 km/h in May.

Across May, 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 May

DaylightNight

Daylight runs from about 13 h 42 min at the start of May to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 5:49 AM to 5:20 AM, and sunset from 7:33 PM to 8:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:497:33
213.85:477:34
313.85:467:35
413.95:457:36
513.95:437:37
613.95:427:38
714.05:417:39
814.05:407:40
914.05:397:41
1014.15:377:42
1114.15:367:43
1214.25:357:44
1314.25:347:45
1414.25:337:47
1514.35:327:48
1614.35:317:49
1714.35:307:50
1814.45:297:50
1914.45:287:51
2014.45:277:52
2114.45:277:53
2214.55:267:54
2314.55:257:55
2414.55:247:56
2514.65:237:57
2614.65:237:58
2714.65:227:59
2814.65:218:00
2914.75:218:01
3014.75:208:01
3114.75:208:02

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.64 kWh/m².

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 — May's 5.64 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.4Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Siyazan?

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

6.3
Sightseeing
5th-best month of the year
3.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Siyazan for sightseeing.

What to pack for Siyazan in May

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

In May, Siyazan sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Siyazan in May

The nearest coast averages about 14°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. 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 May

GoodModeratePoorUnhealthyVery unhealthy

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