Una National Park

National Park · Bihać, 🇧🇦 Bosnia & Herzegovina

Area 249 km²

Time zone Europe/Sarajevo, Europe/Zagreb

Official website nationalpark-una.ba

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Martin Brož / CC BY 3.0

Una National Park Essentials

Una National Park centers on the Una and Unac rivers, characterized by travertine barriers and the 24-meter Štrbački Buk waterfall. This selection includes the 15th-century Ostrovica fortress and the Ottoman-era Havala ruins near Kulen Vakuf. It also features the 16th-century Rmanj Monastery in Martin Brod and the Japodian Islands, a cluster of river islets connected by wooden bridges. These sites represent the park's blend of natural karst formations and historical defensive architecture spanning the medieval and Ottoman periods.

8 places

Una National Park — Map

Climate & when to visit

Best time to visit: June, July, August, September

Select a month

Typical weather in January

Poor

3° (feels like -1°) · extremes -12°–10°
-4° at night
11 rainy days
4 sunny days
3 hours of sunshine per day
Dry air
Calm winds
UV index 1 · low

Typical weather in February

Poor

4° (feels like 0°) · extremes -12°–12°
-3° at night
10 rainy days
6 sunny days
4 hours of sunshine per day
Dry air
Calm winds
UV index 2 · low

Typical weather in March

Poor

9° (feels like 5°) · extremes -7°–16°
-1° at night
11 rainy days
9 sunny days
5 hours of sunshine per day
Dry air
Calm winds
UV index 3 · moderate

Typical weather in April

Fair

13° (feels like 11°) · extremes -3°–20°
3° at night
12 rainy days
9 sunny days
6 hours of sunshine per day
Dry air
Calm winds
UV index 4 · moderate

Typical weather in May

Good

18° (feels like 17°) · extremes 3°–24°
8° at night
13 rainy days
10 sunny days
7 hours of sunshine per day
Dry air
Calm winds
UV index 5 · moderate

Typical weather in June

Great

22° · extremes 6°–29°
12° at night
11 rainy days
14 sunny days
9 hours of sunshine per day
Dry air
Calm winds
UV index 7 · high

Typical weather in July

Great

25° · extremes 8°–32°
14° at night
9 rainy days
16 sunny days
10 hours of sunshine per day
Comfortable humidity
Calm winds
UV index 7 · high

Typical weather in August

Great

26° (feels like 25°) · extremes 9°–33°
14° at night
8 rainy days
16 sunny days
9 hours of sunshine per day
Dry air
Calm winds
UV index 6 · high

Typical weather in September

Great

20° (feels like 18°) · extremes 3°–27°
9° at night
11 rainy days
11 sunny days
6 hours of sunshine per day
Dry air
Calm winds
UV index 4 · moderate

Typical weather in October

Good

15° (feels like 13°) · extremes -2°–22°
6° at night
10 rainy days
9 sunny days
5 hours of sunshine per day
Dry air
Calm winds
UV index 3 · moderate

Typical weather in November

Poor

9° (feels like 6°) · extremes -6°–16°
2° at night
14 rainy days
5 sunny days
3 hours of sunshine per day
Dry air
Calm winds
UV index 1 · low

Typical weather in December

Poor

4° (feels like 0°) · extremes -10°–11°
-2° at night
13 rainy days
3 sunny days
3 hours of sunshine per day
Dry air
Calm winds
UV index 1 · low

Climate data: NASA POWER (MERRA-2) · 1996–2025

Practical information

Currency: Bosnia-Herzegovina Convertible Mark BAM KM · Card payments · Commonly accepted
Emergency numbers: 112
Electricity: Type C / Type F
230 V · 50 Hz

Languages: Bosnian, Croatian, Serbian
Tap water: Drink with caution
Driving side: Right
Calling code: +387