Monthly Climate
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Best time to visit Cheongju-si

May is the best time to visit Cheongju-si for general sightseeing, with average highs of 24 °C and about 8 wet days. The comfortable season runs roughly September to October.

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 May comfort 93/100
The least cloud October 46 % average cloud cover
The least rain January 23 mm
Warmth August 29 °C
Cooler weather January 2.9 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 May 93 24 °C 8
2 October 91 19 °C 5
3 September 86 25 °C 9
4 April 82 18 °C 7
5 June 80 28 °C 9
6 November 59 12 °C 6
7 August 58 29 °C 16
8 July 58 29 °C 17
9 March 56 11 °C 6
10 January 39 2.9 °C 4
11 February 39 5.7 °C 4
12 December 38 4.7 °C 5

When to think twice

December scores lowest with about 5 wet days and highs near 4.7 °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 2.9 °C 23 mm 52 %
February 5.7 °C 32 mm 50 %
March 11.4 °C 49 mm 52 %
April 18.2 °C 81 mm 52 %
May 23.6 °C 91 mm 56 %
June 27.8 °C 130 mm 66 %
July 29.0 °C 261 mm 75 %
August 29.4 °C 233 mm 67 %
September 25.1 °C 141 mm 58 %
October 19.4 °C 56 mm 46 %
November 11.8 °C 43 mm 48 %
December 4.7 °C 24 mm 48 %

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.