Gyeongju weather by month
Gyeongju runs from about 2°C in January to 28°C in August, with September the wettest month at 213 mm.
warmest month
August
28°C
coolest month
January
2°C
wettest month
September
213 mm
worst air month
March
32 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 2°C | 35 mm | 231 h | 18 |
| February | 5°C | 92 mm | 139 h | 21 |
| March | 7°C | 85 mm | 257 h | 32 |
| April | 14°C | 83 mm | 233 h | 20 |
| May | 18°C | 98 mm | 318 h | 16 |
| June | 24°C | 123 mm | 279 h | 13 |
| July | 27°C | 180 mm | 254 h | 13 |
| August | 28°C | 69 mm | 356 h | 14 |
| September | 25°C | 213 mm | 243 h | 11 |
| October | 17°C | 193 mm | 202 h | 12 |
| November | 11°C | 84 mm | 225 h | 19 |
| December | 2°C | 3 mm | 264 h | 17 |
About 3,001 hours of sun a year. Roughly 125 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-25. Full method, licences and the list of sources we rejected are on the methodology page.