Yambol weather in May

In May, Yambol sees average daytime highs of 22°C and overnight lows near 12°C, with 58 mm of rain across 10.7 wet days and about 14.4 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 24°C by the end. The sky is clear or mostly clear about 36% 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 Yambol's 6th-clearest and 9th-windiest month. For the whole year in context, see Yambol's year-round climate.

Daytime high
22°
5th warmest
Overnight low
12°
8th coldest
Rainfall
58 mm
10.7 wet days
Daylight
14 h 24 min
4:58 AM – 7:23 PM
Cloud cover
53%
6th clearest
Wind
8 km/h
9th windiest
Solar energy
5.98 kWh/m²
Travel score
6.7
out of 10

Yambol is city in Yambol municipality, Yambol oblast, Bulgaria.

Density
702/km²
people per km²

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 20°C in the first days to 24°C by the end.

A typical May day in Yambol reaches about 22°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
1209
2209
32010
42010
52110
62110
72110
82110
92111
102111
112211
122211
132211
142211
152212
162212
172212
182212
192312
202312
212312
222313
232313
242313
252313
262313
272413
282413
292413
302413
312414

How May really feels in Yambol

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.

Yambol weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°487.33.29.20.3
Feb / 466.82.510.31.4
Mar12° / 568.71.811.63.2
Apr17° / 508.90.313.15.5
May22° / 12°5810.7014.46.7
Jun27° / 16°489.8015.16.7
Jul29° / 18°437.6014.86.0
Aug30° / 18°274.6013.76.2
Sep25° / 14°385.1012.37.8
Oct19° / 5460.110.86.5
Nov12° / 5470.89.63.5
Dec / 598.22.68.90.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55644
65644
75644
85743
95644
105644
115644
125644
135743
145743
155743
165743
175743
185743
195842
205842
215842
225842
235941
245941
255941
266040
276040
286040
296139
306139
316139

Chance of precipitation in May

Any precipitation

Yambol gets around 58 mm of rain over 10.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
129
229
330
431
531
632
732
832
933
1033
1133
1233
1333
1433
1534
1634
1734
1834
1934
2035
2135
2235
2336
2437
2537
2638
2738
2839
2939
3039
3140

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 68% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19460
29370
39280
49190
590100
689110
788120
886140
984151
1082171
1180191
1278211
1375232
1473252
1571272
1668293
1766313
1864324
1961345
2060355
2157376
2255387
2353398
2452399
25504010
26484111
27464212
28454213
29434314
30414315
31394417

Wind in May

Winds average 8 km/h in May.

Across May, 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
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
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 5:16 AM to 4:46 AM, and sunset from 7:06 PM to 7:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:167:06
213.95:157:07
313.95:147:08
414.05:127:09
514.05:117:11
614.05:107:12
714.15:087:13
814.15:077:14
914.25:067:15
1014.25:057:16
1114.25:037:17
1214.35:027:18
1314.35:017:19
1414.35:007:20
1514.44:597:22
1614.44:587:23
1714.44:577:24
1814.54:567:25
1914.54:557:26
2014.54:547:27
2114.64:537:28
2214.64:527:29
2314.64:517:30
2414.74:517:31
2514.74:507:32
2614.74:497:33
2714.84:487:33
2814.84:487:34
2914.84:477:35
3014.84:467:36
3114.94:467:37

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.98 kWh/m².

For context, solar energy here swings from a low near 1.44 kWh/m² to a high of 6.54 kWh/m² in June across the year — May's 5.98 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Intense
186.0Intense
196.0Intense
206.0Intense
216.0Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in May

Is May a good time to visit Yambol?

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

6.7
Sightseeing
2nd-best month of the year
4.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Yambol for sightseeing.

What to pack for Yambol in May

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

In May, Yambol sees daytime highs around 22°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Yambol in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Yambol peaks around July 17 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 highHighModerateLowJul 17UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr8Very high
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

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

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 1916 µg/m³Sep 1910 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar16Moderate
Apr15Moderate
May13Moderate
Jun13Moderate
Jul12Good
Aug11Good
Sep10Good
Oct10Good
Nov11Good
Dec11Good
Location & terrain

Where is Yambol?

Yambol sits at 42.5°N, 26.5°E, 115 m above sea level, in Bulgaria. The nearest listed city is Sliven, 27 km away.

Nova ZagoraKarnobatAytosStara ZagoraHarmanliBurgasSvilengrad

Topography around Yambol

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

Within 3 km, the terrain around Yambol has only modest variations in elevation — a maximum elevation change of 104 m around an average of 136 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 400 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,518 m.

The land around Yambol is covered by cropland (42%) and artificial surfaces (31%) within 3 km, cropland (81%) within 16 km, and cropland (40%) and trees (39%) within 80 km.

3 km
104 m
16 km
400 m
80 km
1,518 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Sliven 27 km · Nova Zagora 40 km · Karnobat 44 km · Aytos 66 km · Stara Zagora 71 km · Harmanli 79 km · Burgas 79 km · Svilengrad 83 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 Yambol (42.4824°, 26.5001°, elevation 115 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).