Harmanli weather in May

In May, Harmanli sees average daytime highs of 23°C and overnight lows near 12°C, with 67 mm of rain across 11.3 wet days and about 14.3 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 35% 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 48 min by month's end. Set against the rest of the year, May is Harmanli's 6th-clearest and 8th-windiest month. For the whole year in context, see Harmanli's year-round climate.

Daytime high
23°
5th warmest
Overnight low
12°
8th coldest
Rainfall
67 mm
11.3 wet days
Daylight
14 h 24 min
5:02 AM – 7:24 PM
Cloud cover
53%
6th clearest
Wind
9 km/h
8th windiest
Solar energy
6.02 kWh/m²
Travel score
6.7
out of 10

Harmanli is city in Harmanli municipality, Haskovo oblast, Bulgaria.

Density
368/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 21°C in the first days to 24°C by the end.

A typical May day in Harmanli reaches about 23°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 18°C and 28°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)
12110
22110
32110
42110
52110
62210
72211
82211
92211
102211
112211
122211
132312
142312
152312
162312
172312
182312
192312
202313
212413
222413
232413
242413
252413
262413
272413
282414
292514
302514
312514

How May really feels in Harmanli

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.

Harmanli 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 / -1°517.33.19.30.4
Feb / 497.32.410.31.6
Mar12° / 608.81.911.73.5
Apr18° / 548.90.313.15.8
May23° / 12°6711.3014.36.7
Jun27° / 16°559.40156.5
Jul30° / 18°506.6014.75.6
Aug31° / 18°284.4013.75.7
Sep26° / 14°415.6012.37.7
Oct19° / 10°606.40.110.96.7
Nov13° / 546.50.89.63.8
Dec / 627.82.591.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55545
65644
75644
85644
95644
105644
115743
125743
135743
145743
155842
165842
175842
185842
195842
205941
215941
225941
235941
246040
255941
266040
276040
286139
296139
306139
316139

Chance of precipitation in May

Any precipitation

Harmanli gets around 67 mm of rain over 11.3 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 36% 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 (%)
131
232
332
433
533
633
734
834
934
1034
1134
1234
1334
1434
1534
1635
1735
1836
1936
2037
2138
2238
2339
2439
2540
2640
2740
2840
2940
3040
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 69% 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
787121
885141
984151
1082171
1180182
1278202
1376222
1474242
1572253
1670273
1767294
1866304
1964315
2061336
2159347
2258357
2356368
2454379
2553389
26513910
27494011
28484112
29464113
30444214
31424314

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 48 min at the start of May to 14 h 48 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 5:20 AM to 4:50 AM, and sunset from 7:07 PM to 7:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:207:07
213.85:187:08
313.95:177:10
413.95:167:11
514.05:147:12
614.05:137:13
714.05:127:14
814.15:117:15
914.15:097:16
1014.15:087:17
1114.25:077:18
1214.25:067:19
1314.35:057:20
1414.35:047:21
1514.35:037:23
1614.45:027:24
1714.45:017:25
1814.45:007:26
1914.54:597:27
2014.54:587:28
2114.54:577:29
2214.64:567:30
2314.64:557:30
2414.64:557:31
2514.64:547:32
2614.74:537:33
2714.74:527:34
2814.74:527:35
2914.74:517:36
3014.84:517:37
3114.84:507:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.02 kWh/m².

For context, solar energy here swings from a low near 1.52 kWh/m² to a high of 6.62 kWh/m² in June across the year — May's 6.02 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Intense
166.0Intense
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.3Intense
316.3Intense
Planning a trip in May

Is May a good time to visit Harmanli?

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
5.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Harmanli for sightseeing.

What to pack for Harmanli in May

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

In May, Harmanli sees daytime highs around 23°C and nights near 12°C. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

UV index in Harmanli 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 Harmanli peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 17UV 9Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr8Very high
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Harmanli 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 Harmanli 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 1810 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar16Moderate
Apr15Moderate
May14Moderate
Jun13Moderate
Jul12Good
Aug11Good
Sep10Good
Oct11Good
Nov11Good
Dec11Good
Location & terrain

Where is Harmanli?

Harmanli sits at 41.9°N, 25.9°E, 61 m above sea level, in Bulgaria. The nearest listed city is Dimitrovgrad, 28 km away.

SvilengradKardzhaliChirpanStara ZagoraParvomayEdirne

Topography around Harmanli

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

Within 3 km, the terrain around Harmanli has only modest variations in elevation — a maximum elevation change of 178 m around an average of 114 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 361 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,691 m.

The land around Harmanli is covered by trees (29%), grassland (29%) and cropland (27%) within 3 km, cropland (34%), grassland (32%) and trees (31%) within 16 km, and cropland (42%), trees (35%) and grassland (20%) within 80 km.

3 km
178 m
16 km
361 m
80 km
1,691 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Dimitrovgrad 28 km · Haskovo 29 km · Svilengrad 31 km · Kardzhali 55 km · Chirpan 56 km · Stara Zagora 60 km · Parvomay 60 km · Edirne 61 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 Harmanli (41.9323°, 25.9017°, elevation 61 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).