When to go · South Korea

When to go to Sejong

Twelve months of averages for Sejong, and what they say about when to go.

When to go

What the averages say

Mean daily highs and lows and the month's rain, averaged over 2001 to 2020.

On these averages, Sejong has a mean high between 18°C and 32°C and under 150 mm of rain in May, June, September and October.

Wet months (150 mm of rain or more): July and August.
Humid months (a high of 25°C or more with relative humidity of 70% or more): June to August.
Cold months (a mean high under 10°C): December to February.
The warmest month is August (29°C) and the coolest January (1°C). The wettest is July (316 mm) and the driest January (24 mm); about 1,225 mm of rain falls in a year.

How these sentences are worded

Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.

Sejong: highs, lows and rainHighLowRain

The year at a glance

Mild to warm and dry
Mild to warm, humid or showery
Hot
Cool
Wet
Cold

JanCold
FebCold
MarCool
AprCool
MayMild–warm, mixed
JunMild–warm, mixed
JulWet
AugWet
SeptMild–warm, mixed
OctMild–warm, mixed
NovCool
DecCold

Month by month

Every month in Sejong

The whole year, with humidity, cloud and the sunlight reaching the ground.

Climate in Sejong by month: mean daily high and low, rain, and what the month is like
Month	High	Low	Rain	Humidity	Cloud	Sunlight (kWh/m²/day)	High in Dubai	What it is like
January	1°C	-8°C	24 mm	81%	56%	2.5	23°C	Cold
February	4°C	-6°C	34 mm	76%	55%	3.2	24°C	Cold
March	10°C	-2°C	46 mm	74%	53%	4.2	27°C	Cool
April	17°C	4°C	81 mm	72%	56%	5	31°C	Cool
May	23°C	10°C	80 mm	71%	58%	5.6	35°C	Mild to warm, humid or showery
June	28°C	16°C	134 mm	71%	70%	5.1	37°C	Mild to warm, humid or showery
July	28°C	20°C	316 mm	84%	78%	4.2	39°C	Wet
August	29°C	21°C	255 mm	84%	71%	4.4	39°C	Wet
September	24°C	15°C	134 mm	82%	65%	4	37°C	Mild to warm, humid or showery
October	18°C	7°C	54 mm	79%	50%	3.6	34°C	Mild to warm, humid or showery
November	11°C	1°C	41 mm	79%	53%	2.5	29°C	Cool
December	3°C	-6°C	26 mm	80%	54%	2.2	25°C	Cold

The Dubai column is Dubai's mean daily high, for comparison.

Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.

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Tell us when and who is travelling, and a person puts the flights, the stays and the rest into one quote.

Plan a trip to Sejong More about Sejong When to go

Month

High

Low

Rain

Humidity

Cloud

Sunlight (kWh/m²/day)

High in Dubai

What it is like

January

1°C

-8°C

24 mm

81%

56%

2.5

23°C

Cold

February

4°C

-6°C

34 mm

76%

55%

3.2

24°C

Cold

March

10°C

-2°C

46 mm

74%

53%

4.2

27°C

Cool

April

17°C

4°C

81 mm

72%

56%

31°C

Cool

May

23°C

10°C

80 mm

71%

58%

5.6

35°C

Mild to warm, humid or showery

June

28°C

16°C

134 mm

71%

70%

5.1

37°C

Mild to warm, humid or showery

July

28°C

20°C

316 mm

84%

78%

4.2

39°C

Wet

August

29°C

21°C

255 mm

84%

71%

4.4

39°C

Wet

September

24°C

15°C

134 mm

82%

65%

37°C

Mild to warm, humid or showery

October

18°C

7°C

54 mm

79%

50%

3.6

34°C

Mild to warm, humid or showery

November

11°C

1°C

41 mm

79%

53%

2.5

29°C

Cool

December

3°C

-6°C

26 mm

80%

54%

2.2

25°C

Cold