Monthly Climate
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Best time to visit Zanjan

September is the best time to visit Zanjan for general sightseeing, with average highs of 26 °C and about 2 wet days. The comfortable season runs roughly May to July.

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 93/100
The least cloud August 29 % average cloud cover
The least rain August 6 mm
Warmth August 29 °C
Cooler weather January 2.1 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 September 93 26 °C 2
2 June 90 27 °C 4
3 October 88 19 °C 6
4 May 85 22 °C 11
5 July 85 29 °C 2
6 August 83 29 °C 2
7 April 65 16 °C 13
8 November 49 10 °C 8
9 March 40 10 °C 12
10 December 32 4.9 °C 8
11 January 32 2.1 °C 8
12 February 30 4.0 °C 10

When to think twice

February scores lowest with about 10 wet days and highs near 4.0 °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 2.1 °C 41 mm 53 %
February 4.0 °C 51 mm 53 %
March 10.1 °C 67 mm 54 %
April 16.5 °C 74 mm 54 %
May 21.7 °C 55 mm 46 %
June 26.6 °C 15 mm 30 %
July 28.7 °C 9 mm 30 %
August 29.4 °C 6 mm 29 %
September 25.7 °C 7 mm 31 %
October 19.2 °C 33 mm 43 %
November 10.4 °C 52 mm 51 %
December 4.9 °C 40 mm 52 %

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.