Seoul weather in July
In July, Seoul has an average high of 28 °C82 °F and an average low of 21 °C70 °F, with about 361 mm14 in of precipitation. It is the 2nd warmest month of the year and the wettest.
How July compares with other months
Compared with June, July is 3.2 °C5.7 °F warmer on average and wetter by 245 mm9.6 in. Compared with August, July is 0.9 °C1.6 °F cooler on average and wetter by 100 mm3.9 in. Daylight lasts about 14.5 hours around the middle of the month. Average relative humidity is 84% and the average cloud amount 76%.
Is July a good time to visit Seoul?
July is not among the most comfortable months by our comfort score: it is fairly wet (361 mm14 in) and it is humid (84%). The most comfortable months in Seoul are May and October.
What to wear in July
For Seoul in July, pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
July in nearby places
Other months in Seoul
- January1 °C33 °F / −7 °C20 °F
- February3 °C38 °F / −5 °C23 °F
- March9 °C48 °F / −1 °C30 °F
- April15 °C60 °F / 5 °C40 °F
- May21 °C70 °F / 11 °C52 °F
- June26 °C78 °F / 17 °C62 °F
- July28 °C82 °F / 21 °C70 °F
- August28 °C83 °F / 22 °C71 °F
- September25 °C76 °F / 17 °C62 °F
- October19 °C65 °F / 10 °C49 °F
- November11 °C51 °F / 3 °C37 °F
- December3 °C37 °F / −4 °C24 °F
Frequently asked questions
How warm is Seoul in July?
In July the average high in Seoul is 28 °C (82 °F) and the average low is 21 °C (70 °F).
Does it rain a lot in Seoul in July?
On average about 361 mm (14.2 in) of precipitation falls in July; it ranks 1st of the 12 months.
Is July the warmest month in Seoul?
No. The warmest month in Seoul is August, with an average high of 28 °C (83 °F). The coldest month is January, with an average low of -7 °C (20 °F).
How long is the day in Seoul in July?
In the middle of July the day in Seoul lasts about 14.5 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Seoul in July?
The average relative humidity in July is about 84%. Combined with warm days, it can feel muggy.
How cloudy is Seoul in July?
On average about 76% of the sky is covered by cloud in July. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.