Seoul weather in July
In July, Seoul has daytime highs averaging 28 °C, nights around 22 °C, with 17 wet days. Figures are 1991–2020 climate normals.
- 27.9°C Average high
- 21.6°C Average low
- 17days Wet days
- 315mm Rainfall
- 15h Daylight
Daily temperatures through July
How July develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 July | 27.3 °C | 20.4 °C | 50 % |
| 11–20 July | 27.5 °C | 21.3 °C | 53 % |
| 21–31 July | 28.8 °C | 22.8 °C | 57 % |
- Average highs rise from 27.3 °C early in July to 28.8 °C by the end of it.
- Rain is most likely over days 21–31 of July (57 % of days) and least likely over days 1–10 (50 %).
What to expect
| Measure | Typical July | Share of the month |
|---|---|---|
| Days above 25 °C | 27 of 31 | 87 % |
| Days above 30 °C | 5.7 of 31 | 18 % |
| Days below 0 °C | 0 of 31 | 0 % |
| Days with more than 1 mm rain | 17 of 31 | 53 % |
Conditions in July
| Measure | Average |
|---|---|
| Mean temperature | 24 °C |
| Record high (1991–2020) | 36 °C |
| Record low (1991–2020) | 14 °C |
| Relative humidity | 85 % |
| Wind speed | 15 km/h |
| Cloud cover | 75 % |
July compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| May | 22.0 °C | 95 mm | 56 % |
| June | 26.3 °C | 134 mm | 65 % |
| July | 27.9 °C | 315 mm | 75 % |
| August | 28.6 °C | 263 mm | 67 % |
| September | 24.7 °C | 123 mm | 58 % |
See all twelve months for Seoul
- July is the 2nd warmest month here.
- It is the 12th driest month of the year.
- It ranks 12th for least cloud cover.
- Days last about 15 hours from sunrise to sunset.
- It rains on 17 of 31 days — 53 % of the month.
- Nights are about 6.3 °C cooler than the middle of the day.
- The hottest July day on record since 1991 reached 36 °C, 7.7 °C above the usual daytime high.
Nearby destinations in July
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| Seoul | 28 °C | 17 | – |
| Goyang-si | 27 °C | 17 | – |
| Bucheon-si | 27 °C | 15 | 21 |
| Anyang-si | 27 °C | 17 | 21 |
| Seongnam-si | 28 °C | 17 | – |
| Gunpo | 27 °C | 15 | 21 |
| Incheon | 26 °C | 15 | 21 |
| Suwon | 28 °C | 15 | – |
| Hwaseong-si | 26 °C | 15 | 21 |
QuestionsJuly in Seoul, answered
How warm is Seoul in July?
Daily highs average 28 °C and nights fall to about 22 °C, a spread of 6.3 °C between afternoon and dawn. That makes July the 2nd warmest month of the year here.
Does it rain much in Seoul in July?
July averages 315 mm of rain, spread over about 17 of the 31 days — 53 % of the month. Cloud cover averages 75 % of the sky.
How long are the days in July?
Seoul averages 15 hours between sunrise and sunset in July. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- 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: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. 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.