Žumberak in Summer
In summer (June, July and August), Žumberak sees average daytime highs around 27°C and overnight lows near 16°C, with 287 mm of rain over about 34 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 42% of the time across summer, and the air most often feels humid.
Summer is Žumberak's best season of the year to visit on our travel score. For the whole year in context, see Žumberak's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 16°C
- Rainfall
- 287 mm
- 34 wet days
- Avg wind
- 6 km/h
- Travel score
- 6.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Žumberak in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in Žumberak reaches about 27°C and drops to 16°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Žumberak
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.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Žumberak 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 | 5° / -2° | 56 | 9 | 5.2 | 8.9 | 0.0 |
| Feb | 7° / -1° | 67 | 9 | 4.6 | 10.1 | 0.9 |
| Mar | 12° / 2° | 64 | 10.2 | 2.6 | 11.6 | 3.3 |
| Apr | 17° / 6° | 78 | 11 | 0.5 | 13.3 | 5.2 |
| May | 22° / 11° | 99 | 13.4 | 0 | 14.7 | 6.1 |
| Jun | 25° / 15° | 97 | 11.8 | 0 | 15.4 | 6.5 |
| Jul | 28° / 16° | 91 | 11.3 | 0 | 15.2 | 6.4 |
| Aug | 27° / 16° | 99 | 10.6 | 0 | 13.9 | 6.5 |
| Sep | 22° / 12° | 110 | 11.3 | 0 | 12.3 | 6.4 |
| Oct | 17° / 8° | 87 | 9.3 | 0.1 | 10.7 | 5.3 |
| Nov | 10° / 4° | 89 | 10.1 | 1.8 | 9.3 | 2.4 |
| Dec | 5° / -1° | 77 | 9.9 | 4 | 8.5 | 0.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 42% of the time across summer.
Chance of precipitation in Summer
Žumberak gets around 287 mm of rain over 34 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — 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
Daylight runs from about 15 h 12 min in early June to 13 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.7 kWh/m².
Is summer a good time to visit Žumberak?
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.
summer is a reasonable time to visit Žumberak for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Žumberak in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Žumberak sees daytime highs around 27°C and nights near 16°C. Pack light clothes. Worth having: rain gear and sun protection. About 34 days see rain.
UV index in Žumberak in Summer
Clear-sky midday UV across summer averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Žumberak peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 7 | 6 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 7 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Žumberak in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Žumberak is worst in March — around 19 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 18 | 16 | 19 | 18 | 16 | 16 | 14 | 14 | 13 | 14 | 14 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 18 | Moderate |
| Feb | 16 | Moderate |
| Mar | 19 | Moderate |
| Apr | 18 | Moderate |
| May | 16 | Moderate |
| Jun | 16 | Moderate |
| Jul | 14 | Moderate |
| Aug | 14 | Moderate |
| Sep | 13 | Moderate |
| Oct | 14 | Moderate |
| Nov | 14 | Moderate |
| Dec | 15 | Moderate |
Where is Žumberak?
Žumberak sits at 45.8°N, 15.4°E, 0 m above sea level, in Croatia. The nearest listed city is Novo Mesto, 20 km away.
Topography around Žumberak
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Žumberak.
Within 3 km, the terrain around Žumberak has large variations in elevation — a maximum elevation change of 718 m around an average of 703 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,061 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,649 m.
The land around Žumberak is covered by trees (97%) within 3 km, trees (76%) within 16 km, and trees (75%) within 80 km.
Croatia travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 53% of US
- price level, 2025
- GDP per capita
- $27,104
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 87%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2023
- Road deaths
- 7.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 617
- 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 Žumberak (45.7671°, 15.4148°, elevation 0 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.