Monthly Climate
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Best time to visit Banja Luka

September is the best time to visit Banja Luka for general sightseeing, with average highs of 22 °C and about 11 wet days. The comfortable season runs roughly May to September.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking September comfort 86/100
The least cloud August 39 % average cloud cover
The least rain February 70 mm
Warmth August 27 °C
Cooler weather January 5.3 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 September 86 22 °C 11
2 June 83 25 °C 12
3 May 81 21 °C 13
4 August 81 27 °C 8
5 July 80 27 °C 10
6 October 74 17 °C 9
7 April 68 17 °C 12
8 March 50 12 °C 11
9 November 49 12 °C 10
10 February 32 7.5 °C 10
11 January 26 5.3 °C 10
12 December 25 6.0 °C 11

When to think twice

December scores lowest with about 11 wet days and highs near 6.0 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 5.3 °C 70 mm 67 %
February 7.5 °C 70 mm 64 %
March 12.3 °C 80 mm 60 %
April 17.1 °C 90 mm 58 %
May 21.3 °C 111 mm 57 %
June 25.0 °C 93 mm 50 %
July 27.4 °C 86 mm 40 %
August 27.5 °C 70 mm 39 %
September 22.2 °C 95 mm 52 %
October 17.4 °C 72 mm 56 %
November 11.5 °C 86 mm 65 %
December 6.0 °C 83 mm 68 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.