Pernik in Summer

In summer (June, July and August), Pernik sees average daytime highs around 26°C and overnight lows near 14°C, with 108 mm of rain over about 22 wet days across the season. It is the warmest season of the year and the driest season of the year.

Over the season highs climb from about 23°C in early June to 26°C by late August. The sky is clear or mostly clear about 57% of the time across summer, and the air most often feels dry.

Summer is Pernik's best season of the year to visit on our travel score. For the whole year in context, see Pernik's year-round climate.

Avg daytime high: 26°C; warmest season of the year
Avg overnight low: 14°C
Rainfall: 108 mm; 22 wet days
Avg wind: 6 km/h
Travel score: 7.3; best season of the year
Months: Jun · Jul · Aug

← Spring Pernik year-round climate Fall →

Spring Summer Fall Winter

Temperature in Pernik in Summer

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 23°C in early June to 26°C by late August.

A typical summer day in Pernik reaches about 26°C and drops to 14°C overnight. The warmest of the three months is August, the coolest June.

How summer really feels in Pernik

Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Pernik weather by month

How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	4° / -4°	40	7.4	5.1	9.2	0.0
Feb	6° / -3°	40	7.6	4.8	10.3	0.7
Mar	11° / 1°	54	9.7	4.2	11.6	2.7
Apr	16° / 5°	54	10	1.2	13.1	4.8
May	21° / 9°	52	10.5	0.1	14.4	6.4
Jun	25° / 13°	46	9.5	0	15.1	7.1
Jul	27° / 15°	36	7.3	0	14.8	7.3
Aug	28° / 15°	26	5.4	0	13.7	7.5
Sep	23° / 11°	32	5.8	0	12.3	7.7
Oct	17° / 6°	47	6.4	0.6	10.8	6.0
Nov	11° / 1°	39	7	2.1	9.6	2.7
Dec	5° / -3°	49	8.6	4.7	8.9	0.2

Cloud cover in Summer

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time across summer.

Chance of precipitation in Summer

Any precipitation

Pernik gets around 108 mm of rain over 22 wet days across summer. The line is the day-by-day chance of measurable precipitation.

Humidity in Summer

DryComfortableHumidMuggyOppressiveMiserable

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

Wind in Summer

Winds average 6 km/h across summer.

Sunrise & sunset in Summer

DaylightNight

Daylight runs from about 14 h 54 min in early June to 13 h 06 min by late August. The lit band spans sunrise to sunset each day.

Solar energy in Summer

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across summer, about 6.1 kWh/m².

Planning a trip in summer

Is summer a good time to visit Pernik?

Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

7.3

Sightseeing

1st-best month of the year

7.1

Beach & pool

1st-best month of the year

summer is one of the better times to visit Pernik for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Pernik in Summer

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

In summer, Pernik sees daytime highs around 26°C and nights near 14°C. Pack light clothes and sun protection. Worth having: rain gear. About 22 days see rain.

light clothessun protectionrain gear

UV index in Pernik in Summer

LowModerateHighVery highExtreme

Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pernik peaks around June 23 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	4	8	7	9	9	9	6	4	2	1
Level	Low	Moderate	Moderate	Very high	Very high	Very high	Very high	Very high	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	2	Low
Feb	3	Moderate
Mar	4	Moderate
Apr	8	Very high
May	7	Very high
Jun	9	Very high
Jul	9	Very high
Aug	9	Very high
Sep	6	High
Oct	4	Moderate
Nov	2	Moderate
Dec	1	Low

Air quality in Pernik in Summer

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.

Air quality in Pernik is worst in May — around 38 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (December, 21 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Pernik's WHO annual average of 30.8 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	25	28	34	37	38	37	33	35	28	27	26	21
Level	Moderate	Moderate	Moderate	Poor	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	25	Moderate
Feb	28	Moderate
Mar	34	Moderate
Apr	37	Poor
May	38	Poor
Jun	37	Poor
Jul	33	Moderate
Aug	35	Moderate
Sep	28	Moderate
Oct	27	Moderate
Nov	26	Moderate
Dec	21	Moderate

Location & terrain

Where is Pernik?

Pernik sits at 42.6°N, 23.0°E, 751 m above sea level, in Bulgaria. The nearest listed city is Sofia, 26 km away.

Topography around Pernik

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

Within 3 km, the terrain around Pernik has significant variations in elevation — a maximum elevation change of 478 m around an average of 794 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,261 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,683 m.

The land around Pernik is covered by trees (47%), grassland (25%) and artificial surfaces (21%) within 3 km, trees (38%), grassland (33%) and cropland (24%) within 16 km, and trees (66%) and grassland (22%) within 80 km.

3 km

478 m

trees 47%

16 km

1,261 m

trees 38%

80 km

2,683 m

trees 66%

treesgrasslandcroplandartificial surfacesbare terrain

← Spring Pernik year-round climate Fall →

Summer weather nearby: Sofia 26 km · Dupnitsa 38 km · Kyustendil 45 km · Samokov 52 km · Blagoevgrad 65 km · Botevgrad 71 km · Berkovitsa 72 km · Pirot 72 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

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 Pernik (42.5967°, 23.0332°, elevation 751 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.