Seoul Weather by Month - Last 2 Years (2024)

Here's the weather data for Seoul in Korea for the past two years, including the highest and lowest temperatures, average temperatures, rainy days, and how much rain falls each month. And check out my list of the best months to travel to Seoul, considering both the weather and cultural events.

Seoul, Korea Temperature by Month - Last 2 Years

What temperatures can you expect in Seoul throughout the year? Here're two plots showing the 2022 and 2023 average temperatures in Seoul. The first one, in degrees Fahrenheit. The second, in degrees Celsius.

You may notice that in South Korea the temperatures are measured in degrees Celsius (°C). If you are from the US, you may be more familiar with degrees Fahrenheit (°F). In case you want to convert between these units, you can use the online tools I used to write this post. They are very easy and convenient to use:

• Convert temperature from °C to °F
• Convert temperature from °F to °C

Over the past two years, the hottest weather was in July and August, with temperatures reaching 97°F (36°C), while the coldest temperatures were in January, with temperatures dropping to 1°F (-17°C). There's a 96°F (53°C) gap between these two extremes. If you're planning to stay in Korea for a long time, you'll need different clothes to match the changing monthly weather.

During the spring and fall, it's dry and clear, while summers are hot and humid. Winters are cold and dry. May, June, and September have average temperatures around 70°F (20°C), which is perfect for outdoor activities. The table below shows the monthly lowest, highest, and average temperatures for 2022 and 2023.

🟠 Average temperatures in Seoul for 2022 and 2023:

Month	Min (ºF)	Average(ºF)	Max (ºF)
January	2	31	50
February	18	33	54
March	27	48	73
April	38	58	83
May	46	67	88
June	61	74	92
July	70	81	96
August	64	79	94
September	56	73	89
October	40	59	80
November	19	47	75
December	6	30	56

🟠 Seoul temperatures in 2023:

Month	Min (ºF)	Average(ºF)	Max (ºF)
January	1	33.6	54
February	23	36.1	57
March	27	49.5	77
April	37	56.8	82
May	46	67.1	88
June	63	74.1	93
July	70	80.1	95
August	68	81.0	97
September	59	74.7	91
October	41	60.4	77
November	21	44.2	79
December	5	34.0	63

🟠 Seoul temperatures in 2022:

Month	Min (ºF)	Average(ºF)	Max (ºF)
January	3	28.0	46
February	12	30.0	50
March	27	45.7	68
April	39	58.3	84
May	46	66.4	88
June	59	73.9	91
July	70	81.1	97
August	61	77.9	91
September	54	72.1	86
October	39	58.3	82
November	18	50.4	72
December	7	27.0	50

Seoul, Korea Rain by Month - Last 2 Years

In July and August, there is often a lot of rain because of the monsoon season and typhoons. Approximately 50% of South Korea's annual rainfall occurs during this time. The humidity increases and the days become hot, so outdoor activities can be difficult.

🟡 Seoul Monthly Average Rainy Days and Precipitation for 2022 and 2023:

In August 2022, it rained for 19 days with total rainfall of 22.4inches (570 mm). In July 2023, there was also 19 days of rain recording 18.1inches (460 mm).

Excluding summer, spring, fall and winter generally have relatively dry weather. In 2023, the months of January, February, March, May, October and November each saw 8 days or less of rain. The table below shows the number of rainy days and rainfall amounts in inches and mm for 2022 and 2023.

🟡 Seoul 2023 rain:

Month	Days	Inches	mm
January	7	1.9	48
February	2	0.0	1
March	3	0.4	11
April	11	3.8	97
May	8	6.1	156
June	11	7.7	196
July	19	18.1	460
August	13	11.7	298
September	11	5.3	135
October	5	1.2	31
November	6	3.2	82
December	12	3.4	86

🟡 Seoul 2022 rain:

Month	Days	Inches	mm
January	7	0.2	6
February	5	0.2	5
March	9	0.8	20
April	7	4.0	103
May	4	0.3	8
June	12	15.5	394
July	14	9.9	252
August	19	22.4	570
September	8	7.9	202
October	5	5.2	133
November	5	3.3	85
December	9	0.5	14

The Best Months for Visiting South Korea

🧡 April - Mild, pleasant weather. It's the best time to ther; if it rains, many cherry blossoms may fall.visit Korea for cherry blossoms. Cultural events, like nighttime tours of Gyeongbokgung Palace, are held.

You can see cherry blossoms in full bloom in April. Check the blooming period by region and recommended cherry blossom spots in Seoul📌:

The Gyeongbokgung palace with cherry blossoms

🧡 May - Pleasant spring weather, the last month for nighttime tours at Gyeongbokgung Palace in spring. Fewer crowds make it a good time for traveling before summer.

🧡 June - Start of summer. Schools have a 2 month break from July to August so fewer people in June.

🧡 September - Still warm enough for many events. Tree leaves start changing. Autumn nighttime tours at Gyeongbokgung Palace begin.

• 🤔 But Chuseok, Korea's Thanksgiving day, usually lands around mid-September. It's on the lunar calendar and one of Korea's biggest holidays. Lots of people go home for the holidays, so travel can be crazy. Many restaurants and bars close, too. Apart from that, September is a great time to travel around Korea. Make sure you check the Chuseok dates before you go.

🧡 October - There are clear blue skies and mountains covered in foliage. It's the last month for nighttime tours at Gyeongbokgung Palace.

Wrap-up

The best time to visit Seoul is spring (April-June) and autumn (September-October) when the weather is nice for outdoor activities and there aren't too many tourists. These times are great for visiting Korean landmarks and mountains. You can also catch cultural events. There usually aren't as many people as in the summer when students are on break, so popular attractions won't be as busy.