Weather by month for Banja Luka, the best months to go and how Bosnia and Herzegovina's regions differ, scored from 10 years of climate data.
Apr, Jun, Sep, Oct
The highest month scores: comfortable temperatures, little rain and plenty of sun.
Highs 18°C to 26°C · 9–12 rain days
May, Jul, Aug
Still good weather, just not quite the top months.
Highs 21°C to 29°C · 9–16 rain days
Jan, Feb, Dec
The weakest weather of the year: too hot, too cold or too wet.
Highs 7°C to 10°C · 10–12 rain days
Weather by month
Average highs and lows, rain days, sunshine and our month score out of 10.
| Month | High / low | Rain days | Sunshine | Score |
|---|---|---|---|---|
| January | 7°C / -2°C | 12 days (82 mm) | 5.5 h/day | 2.1/10 |
| February | 10°C / 1°C | 10 days (77 mm) | 6.5 h/day | 3.8/10 |
| March | 13°C / 3°C | 11 days (77 mm) | 8.2 h/day | 5.4/10 |
| Best month: April | 18°C / 6°C | 11 days (78 mm) | 9.6 h/day | 7.6/10 |
| May | 21°C / 11°C | 16 days (129 mm) | 10.2 h/day | 7.0/10 |
| Best month: June | 26°C / 15°C | 12 days (92 mm) | 12.1 h/day | 7.5/10 |
| July | 29°C / 17°C | 9 days (75 mm) | 12.7 h/day | 6.7/10 |
| August | 29°C / 17°C | 9 days (63 mm) | 11.8 h/day | 6.0/10 |
| Best month: September | 23°C / 13°C | 10 days (91 mm) | 9.4 h/day | 8.1/10 |
| Best month: October | 19°C / 9°C | 9 days (76 mm) | 8.0 h/day | 8.3/10 |
| November | 13°C / 4°C | 11 days (101 mm) | 5.4 h/day | 4.5/10 |
| December | 8°C / 1°C | 10 days (94 mm) | 5.2 h/day | 2.5/10 |
Figures for Banja Luka; the country's best months are weighted across its cities. Best months are highlighted. How we score months
Month by month
7°C / -2°C · 12 rain days · 5.5 h sun
Banja Luka averages a high of 7°C and about 11.5 rain days, with just 5.5 hours of sun a day. Cold, grey and damp conditions make this the lowest-scoring month on our scale (2.1). New Year's Day falls on 1 and 2 January, giving the start of the month a holiday feel despite the weather.
10°C / 1°C · 10 rain days · 6.5 h sun
Highs reach 10°C with around 10.2 rain days and 6.5 hours of sun. The score stays low at 3.8, as winter chill and frequent rain or snow keep conditions difficult for sightseeing. It's a quiet month with no major holidays listed.
13°C / 3°C · 11 rain days · 8.2 h sun
Temperatures climb to a 13°C high, though rain is still frequent at 11.2 days a month. Sun hours rise to 8.2, and the month scores a middling 5.4, marking an early transition toward spring.
18°C / 6°C · 11 rain days · 9.6 h sun
April brings a 18°C high, 11 rain days and 9.6 hours of sunshine, and scores 7.6, the joint-top rating for the year. Mild days and greening countryside make it one of the best windows to travel.
21°C / 11°C · 16 rain days · 10.2 h sun
May is the wettest month, with 129mm of rain over nearly 16 days, though highs reach a pleasant 21°C and sun hours hit 10.2. The score of 7.0 is still good, but pack for showers. May Day holidays fall on 1 and 2 May.
26°C / 15°C · 12 rain days · 12.1 h sun
Summer arrives with a 26°C high, 11.8 rain days and 12.1 hours of sun. June scores 7.5, tied for the best month, thanks to long bright days and moderate rainfall.
29°C / 17°C · 9 rain days · 12.7 h sun
July is hot, with highs of 29°C, the year's lowest rain-day count at 9.2, and 12.7 hours of sun. The score dips slightly to 6.7 because the heat can feel intense for sightseeing, but conditions are dry and sunny overall.
29°C / 17°C · 9 rain days · 11.8 h sun
August stays hot at 28.5°C with just 63mm of rain over 8.9 days, and sun hours reach 11.8. The score settles at 6.0, good for travel, though midday heat can be a factor to plan around.
23°C / 13°C · 10 rain days · 9.4 h sun
September cools to 23°C with 9.7 rain days and 9.4 hours of sun, earning a strong score of 8.1. Warm days, lower rainfall and fewer crowds make this one of the top-rated months.
19°C / 9°C · 9 rain days · 8.0 h sun
October is the highest-scoring month at 8.3, with a mild 19°C high, just 8.6 rain days and 8 hours of sun. Crisp air and autumn colour, combined with low rainfall, make conditions comfortable for exploring.
13°C / 4°C · 11 rain days · 5.4 h sun
Highs fall to 12.5°C and rain returns, with 10.7 rain days and only 101mm total but noticeably less sun at 5.4 hours. The score drops to 4.5, reflecting the shift into cold, damp late-autumn weather.
8°C / 1°C · 10 rain days · 5.2 h sun
December is cold and dark, with an 8°C high, 10.1 rain days and just 5.2 hours of sun. The month scores 2.5, the second-lowest of the year, as grey skies and chill dominate; New Year's Eve approaches but the main holidays land in January.
By trip type
City sightseeing
September and October bring warm days of 23 to 19°C with fewer rain days than summer, making them easy months for walking around Sarajevo or Mostar. April and June also work well, with highs of 18 to 26°C and 9.6 to 12.1 hours of sun, before or after the hottest, busiest summer weeks.
Hiking & nature
September and October are the top hiking months, with highs of 23.3°C and 18.7°C, lows down to 8.7°C and fewer rain days (9.7 and 8.6) than the wetter spring months, giving trails time to dry out and cooler air for climbing.
Events calendar
Keep planning
FAQ
Yes, August scores 6 out of 10, a good month. Expect hot days averaging 28.5°C, warm nights around 17.3°C, and the fewest rainy days of the year at just 8.9. With 11.8 hours of sunshine daily, it's bright but can feel intense without shade.
Yes, October is the top-rated month, scoring 8.3 out of 10. Days average 18.7°C and nights cool to 8.7°C, giving comfortable conditions for walking and sightseeing. Rain falls on only 8.6 days, and sunshine averages 8 hours, making it a reliable choice.
The best months are October, September, April and June, all scoring 7.5 or higher. October leads at 8.3, with mild highs of 18.7°C. September follows closely at 8.1, with warmer days near 23.3°C. These months balance comfortable temperatures with manageable rainfall.
No, January scores just 2.1 out of 10, the lowest of the year. Highs reach only 6.9°C and lows drop to -1.5°C, with 11.5 rainy days and just 5.5 hours of sunshine. It's cold and gray, though this can suit travellers seeking quiet winter scenery.
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