Kazanlak weather in May

In May, Kazanlak sees average daytime highs of 21°C and overnight lows near 11°C, with 95 mm of rain across 14.2 wet days and about 14.4 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 22°C by the end. The sky is clear or mostly clear about 28% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is Kazanlak's 6th-clearest and 4th-windiest month. For the whole year in context, see Kazanlak's year-round climate.

Daytime high
21°
5th warmest
Overnight low
11°
8th coldest
Rainfall
95 mm
14.2 wet days
Daylight
14 h 24 min
5:02 AM – 7:27 PM
Cloud cover
58%
6th clearest
Wind
7 km/h
4th windiest
Solar energy
5.89 kWh/m²
Travel score
5.9
out of 10

Kazanlak is city in Kazanlak municipality, Stara Zagora oblast, Bulgaria.

Density
1,329/km²
people per km²
Founded
1300

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 19°C in the first days to 22°C by the end.

A typical May day in Kazanlak reaches about 21°C in the afternoon and slips back to 11°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1199
2199
3199
4199
5209
62010
72010
82010
92010
102010
112010
122110
132111
142111
152111
162111
172111
182111
192111
202211
212212
222212
232212
242212
252212
262212
272212
282212
292212
302313
312313

How May really feels in Kazanlak

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.

Kazanlak weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°4984.39.20.0
Feb / -1°487.63.710.30.7
Mar11° / 6310.23.211.62.6
Apr16° / 6711.60.613.14.8
May21° / 11°9514.2014.45.9
Jun25° / 15°8313.1015.16.4
Jul28° / 17°7110.4014.86.6
Aug28° / 17°507.5013.76.9
Sep23° / 13°527.2012.37.5
Oct17° / 587.20.310.85.9
Nov11° / 557.21.69.62.7
Dec / -1°608.53.58.90.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 24% of May, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24951
35050
45050
55050
65149
75149
85149
95050
105050
115149
125149
135149
145149
155248
165248
175248
185248
195248
205347
215347
225347
235347
245446
255545
265545
275545
285644
295644
305644
315743

Chance of precipitation in May

Any precipitation

Kazanlak gets around 95 mm of rain over 14.2 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 46% and peaks near 51% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
140
241
341
442
542
643
743
843
944
1044
1144
1245
1345
1445
1545
1645
1745
1845
1946
2046
2147
2247
2348
2448
2549
2650
2750
2851
2951
3051
3151

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 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19640
29550
39550
49460
59370
69190
790100
889110
986131
1085141
1183161
1282171
1380191
1478202
1576222
1675232
1773252
1871263
1969283
2068293
2167303
2265314
2364324
2461345
2560355
2658366
2757376
2855387
2953398
3051409
31484110

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 48 min at the start of May to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 5:21 AM to 4:50 AM, and sunset from 7:11 PM to 7:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:217:11
213.95:197:12
313.95:187:13
414.05:167:14
514.05:157:15
614.05:147:16
714.15:127:17
814.15:117:19
914.25:107:20
1014.25:097:21
1114.25:087:22
1214.35:067:23
1314.35:057:24
1414.45:047:25
1514.45:037:26
1614.45:027:27
1714.55:017:28
1814.55:007:29
1914.54:597:30
2014.64:587:31
2114.64:577:32
2214.64:567:33
2314.74:557:34
2414.74:557:35
2514.74:547:36
2614.74:537:37
2714.84:527:38
2814.84:527:39
2914.84:517:40
3014.84:507:41
3114.94:507:42

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.89 kWh/m².

For context, solar energy here swings from a low near 1.51 kWh/m² to a high of 6.43 kWh/m² in June across the year — May's 5.89 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
236.0Bright
246.0Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Kazanlak?

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

5.9
Sightseeing
5th-best month of the year
3.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Kazanlak for sightseeing.

What to pack for Kazanlak in May

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

In May, Kazanlak sees daytime highs around 21°C and nights near 11°C. Pack rain gear. Worth having: sun protection. About 14 days see rain.

rain gearsun protection

UV index in Kazanlak 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 Kazanlak peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highVery highHighModerateLowJul 15UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr8Very high
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Kazanlak 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 Kazanlak is worst in March — around 16 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 2015 µg/m³Dec 1210 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar16Moderate
Apr14Moderate
May14Moderate
Jun14Moderate
Jul12Moderate
Aug12Good
Sep10Good
Oct10Good
Nov10Good
Dec10Good
Location & terrain

Where is Kazanlak?

Kazanlak sits at 42.6°N, 25.4°E, 366 m above sea level, in Bulgaria. The nearest listed city is Stara Zagora, 29 km away.

Stara ZagoraGabrovoChirpanKarlovoRakovskiSevlievoNova ZagoraVeliko Tarnovo

Topography around Kazanlak

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

Within 3 km, the terrain around Kazanlak has only modest variations in elevation — a maximum elevation change of 171 m around an average of 382 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,210 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,335 m.

The land around Kazanlak is covered by trees (26%), artificial surfaces (25%) and grassland (24%) within 3 km, trees (55%), grassland (20%) and cropland (20%) within 16 km, and trees (45%) and cropland (37%) within 80 km.

3 km
171 m
16 km
1,210 m
80 km
2,335 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Stara Zagora 29 km · Gabrovo 29 km · Chirpan 47 km · Karlovo 49 km · Rakovski 51 km · Sevlievo 51 km · Nova Zagora 53 km · Veliko Tarnovo 55 km

Bulgaria travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$20,328
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
96%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
9.2
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 594
Religion
Christian 65%Muslim 10%none 5%other 0%

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 Kazanlak (42.6167°, 25.4°, elevation 366 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).