Troyan weather in May

In May, Troyan sees average daytime highs of 20°C and overnight lows near 10°C, with 122 mm of rain across 15 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 21°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels dry.

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

Daytime high
20°
5th warmest
Overnight low
10°
8th coldest
Rainfall
122 mm
15 wet days
Daylight
14 h 24 min
5:04 AM – 7:31 PM
Cloud cover
59%
6th clearest
Wind
6 km/h
6th windiest
Solar energy
5.78 kWh/m²
Travel score
5.7
out of 10

Troyan is city in Troyan municipality, Lovech oblast, Bulgaria.

Density
351/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 19°C in the first days to 21°C by the end.

A typical May day in Troyan reaches about 20°C in the afternoon and slips back to 10°C overnight — a 10°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 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1198
2199
3199
4199
5199
6199
7199
8209
92010
102010
112010
122010
132010
142010
152010
162010
172011
182111
192111
202111
212111
222111
232111
242111
252111
262111
272112
282112
292212
302212
312212

How May really feels in Troyan

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.

Troyan 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 / -4°538.66.59.20.0
Feb / -2°538.7610.20.4
Mar10° / 75125.111.62.2
Apr16° / 9013.11.213.14.4
May20° / 10°12215014.45.7
Jun24° / 14°10914.2015.16.3
Jul26° / 16°10411.5014.86.8
Aug27° / 15°668.4013.87.3
Sep22° / 12°738.9012.37.1
Oct16° / 618.50.710.85.4
Nov10° / 507.82.39.52.4
Dec / -2°609.768.90.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
34951
45050
54951
64951
74951
85050
94852
104951
114852
124951
134951
144951
154951
164951
174951
184951
194951
204852
214852
224852
234951
244951
255050
265050
275050
285050
295149
305149
315149

Chance of precipitation in May

Any precipitation

Troyan gets around 122 mm of rain over 15 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 49% and peaks near 52% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
141
242
342
443
544
644
745
846
947
1048
1148
1249
1349
1450
1550
1650
1750
1850
1951
2051
2151
2251
2351
2451
2551
2651
2752
2852
2952
3052
3152

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 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19550
29550
39460
49370
59280
69190
790100
888120
986131
1085141
1183161
1282171
1381181
1478202
1577212
1676222
1774242
1872253
1971263
2070273
2168284
2267294
2366304
2465314
2563325
2662335
2760346
2859356
2957367
3055378
3153389

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 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 60 minutes over May. Sunrise moves from 5:23 AM to 4:52 AM, and sunset from 7:14 PM to 7:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:237:14
213.95:217:15
313.95:207:16
414.05:197:17
514.05:177:19
614.15:167:20
714.15:157:21
814.15:137:22
914.25:127:23
1014.25:117:24
1114.35:107:25
1214.35:087:26
1314.35:077:28
1414.45:067:29
1514.45:057:30
1614.45:047:31
1714.55:037:32
1814.55:027:33
1914.65:017:34
2014.65:007:35
2114.64:597:36
2214.64:587:37
2314.74:577:38
2414.74:577:39
2514.74:567:40
2614.84:557:41
2714.84:547:42
2814.84:547:43
2914.84:537:44
3014.94:527:44
3114.94:527:45

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.78 kWh/m².

For context, solar energy here swings from a low near 1.45 kWh/m² to a high of 6.34 kWh/m² in June across the year — May's 5.78 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
296.0Bright
306.0Bright
316.0Intense
Planning a trip in May

Is May a good time to visit Troyan?

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

5.7
Sightseeing
5th-best month of the year
3.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Troyan for sightseeing.

What to pack for Troyan in May

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

In May, Troyan sees daytime highs around 20°C and nights near 10°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.

rain gearsun protection

UV index in Troyan 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 Troyan 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
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Troyan 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 Troyan is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 2016 µg/m³Dec 1411 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar16Moderate
Apr15Moderate
May14Moderate
Jun14Moderate
Jul14Moderate
Aug13Moderate
Sep12Good
Oct11Good
Nov12Good
Dec10Good
Location & terrain

Where is Troyan?

Troyan sits at 42.9°N, 24.7°E, 389 m above sea level, in Bulgaria. The nearest listed city is Lovech, 26 km away.

KarlovoSevlievoGabrovoPlevenPanagyurishteKazanlakRakovski

Topography around Troyan

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

Within 3 km, the terrain around Troyan has significant variations in elevation — a maximum elevation change of 353 m around an average of 474 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,460 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,343 m.

The land around Troyan is covered by trees (73%) within 3 km, trees (83%) within 16 km, and trees (51%) and cropland (32%) within 80 km.

3 km
353 m
16 km
1,460 m
80 km
2,343 m
treesgrasslandcroplandartificial surfaces
May weather nearby: Lovech 26 km · Karlovo 30 km · Sevlievo 35 km · Gabrovo 49 km · Pleven 59 km · Panagyurishte 62 km · Kazanlak 64 km · Rakovski 70 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 Troyan (42.8943°, 24.7159°, elevation 389 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).