Monthly Climate
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Best time to visit Sariwŏn-si

May is the best time to visit Sariwŏn-si for general sightseeing, with average highs of 22 °C and about 7 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 92/100
The least cloud February 44 % average cloud cover
The least rain January 14 mm
Warmth August 28 °C
Cooler weather January 0.2 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 May 92 22 °C 7
2 September 91 24 °C 7
3 October 86 18 °C 5
4 June 82 27 °C 10
5 April 75 17 °C 7
6 August 64 28 °C 14
7 July 62 28 °C 16
8 November 49 9.6 °C 6
9 March 48 9.4 °C 4
10 January 38 0.2 °C 3
11 February 38 3.5 °C 4
12 December 38 2.3 °C 4

When to think twice

December scores lowest with about 4 wet days and highs near 2.3 °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 0.2 °C 14 mm 47 %
February 3.5 °C 19 mm 44 %
March 9.4 °C 26 mm 46 %
April 16.5 °C 47 mm 49 %
May 22.4 °C 86 mm 54 %
June 26.7 °C 104 mm 63 %
July 28.2 °C 254 mm 74 %
August 28.4 °C 219 mm 66 %
September 24.4 °C 90 mm 56 %
October 18.1 °C 40 mm 45 %
November 9.6 °C 42 mm 49 %
December 2.3 °C 21 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.