Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Suwon-si is from May, June, October. — consistent weather climate
🌦Humid
| Score | 24 | 27 | 42 | 74 | 81 | 78 | 44 | 45 | 73 | 85 | 40 | 24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Cold | Cold | Mild | Cool & rainy | Humid | Rainy | Rainy | Humid | Mild | Cold | Polar |
| Temperature | -6–2°C | -4–5°C | 0–11°C | 6–18°C | 11–23°C | 17–27°C | 22–29°C | 22–29°C | 17–25°C | 9–19°C | 2–11°C | -5–4°C |
| Feels like | -11–-2°C | -9–1°C | -4–8°C | 3–16°C | 10–22°C | 18–28°C | 25–33°C | 26–34°C | 18–27°C | 7–18°C | -1–9°C | -9–-1°C |
| Precipitation | 19mm 4 days | 28mm 4 days | 38mm 4 days | 62mm 6 days | 101mm 7 days | 114mm 9 days | 296mm 20 days | 257mm 17 days | 141mm 10 days | 72mm 5 days | 64mm 6 days | 28mm 5 days |
| Sunshine | 7.7h ☀︎ 77% | 8.3h ☀︎ 77% | 9.2h ☀︎ 77% | 9.4h ☀︎ 72% | 9.9h ☀︎ 70% | 9.7h ☀︎ 66% | 7.1h ☀︎ 49% | 8.8h ☀︎ 65% | 8.5h ☀︎ 68% | 8.3h ☀︎ 74% | 7.2h ☀︎ 71% | 7.2h ☀︎ 75% |
| Wind | NW · 16 km/h | NW · 17 km/h | W · 17 km/h | W · 18 km/h | W · 17 km/h | W · 16 km/h | S · 15 km/h | SW · 14 km/h | NE · 14 km/h | N · 14 km/h | N · 15 km/h | NW · 15 km/h |
| Humidity (%) | 59% | 62% | 66% | 65% | 69% | 73% | 83% | 82% | 77% | 73% | 71% | 63% |
| Day length | 9.9h | 10.8h | 12.0h | 13.2h | 14.2h | 14.7h | 14.4h | 13.6h | 12.4h | 11.2h | 10.2h | 9.6h |
This festival honors King Jeongjo's historic procession to Hwaseong Fortress with a massive costumed parade, martial art…
Suwon experiences its heaviest crowds during the biting chill of late autumn and early winter, yet its massive stone battlements are made for the open-air brilliance of October—the single best month to visit, which strangely sees the thinnest crowds of the year.
Most travelers know Suwon as the fortified citadel just a short train ride south of Seoul, where nearly six kilometers of intact eighteenth-century stone walls loop over ridges, through monumental gates, and across modern avenues. Built by King Jeongjo to honor his father and anchor royal power, Hwaseong Fortress dominates the skyline and dictates how you spend your day: on your feet, exposed to the elements, climbing ramparts and watching city life churn beneath watchtowers. To the east, the sprawling glass campus of Yeongtong District hums with the tech power of Samsung, providing a sharp modern contrast to the old fortress walls. Because Suwon is fundamentally an open-air city best experienced by hiking along stone parapets, getting the weather right is everything.
October is the undisputed pinnacle of the Suwon calendar. The suffocating summer humidity has broken completely, leaving behind brilliant, dry air and a soft autumn sun that warms the grey granite masonry without tiring you out. Walking the entire circuit of Hwaseong Fortress—a trek that involves steep inclines, uneven flagstones, and expansive views across the entire valley—feels utterly effortless in this climate. The surrounding foliage turns amber and crimson, framing the arches of Janganmun and the royal courtyards of Hwaseong Haenggung in rich seasonal color.
Remarkably, while the city's overall travel figures surge in late autumn, October remains exceptionally peaceful on the crowd index. You get wide-open ramparts and quiet perimeter paths, punctured only by the vibrant spectacle of the Suwon Hwaseong Cultural Festival. During this signature event, King Jeongjo’s historic royal procession is recreated with elaborate period costumes, traditional martial arts displays along the ramparts, and night fireworks that illuminate the stone battlements. September acts as the transition, still holding a whisper of summer warmth and occasional lingering showers, but by late September and through October, the conditions are as close to perfection as Korea ever gets.
Spring arrives with genuine vigor in April and May, bringing mild afternoons and long stretches of bright sunshine. The hillsides flanking Hwaseong Fortress turn bright green as cherry blossoms and wild azaleas bloom against the dark tiles of the guard towers. It is an exceptionally comfortable window to explore the palatial grounds of Hwaseong Haenggung or sit with a coffee along the stream that cuts through the fortress walls.
Rainfall does begin to tick upward in May, shifting from gentle spring drizzles into heavier downpours that can occasionally interrupt a long walk on the walls. Still, rain rarely washes out entire days, and temperatures hover in that pleasant realm where a light jacket is all you need once the sun sets. Crowds remain light and manageable throughout these months, making spring the prime alternative if you cannot arrange an autumn journey.
Summer in Suwon is a test of endurance. By late June, the monsoon regime takes hold, transforming the city into a lush, sodden basin. July and August bring relentless, heavy deluges that dump torrential water in brief, furious spells, making stone staircases slick and turning outdoor exploration into an ordeal of umbrellas and soaked shoes.
Even when the rain breaks, the heat and humidity are relentless. The apparent temperature easily climbs past thirty-four degrees, and because walking Hwaseong Fortress requires climbing exposed stone steps with virtually no overhead shade, tackling the battlements during midday is exhausting. If you find yourself in Suwon during July or August, keep your fortress explorations strictly to dusk, when the stones cool down, the lighting illuminates the gates, and a mild evening breeze occasionally cuts through the heavy air.
Here lies Suwon’s greatest travel paradox: the visitor numbers spike dramatically in November and reach the annual peak in December, precisely when outdoor comfort collapses. November sees a massive influx of regional travelers catching the tail end of fall foliage and entering the holiday season, but temperatures tumble rapidly, leaving the windswept walls bitterly cold. December follows with the year's highest crowd volume, despite sub-zero wind chills that turn walking the elevated parapets into a biting, shiver-inducing trial.
By January and February, the tourist crush finally recedes, leaving the fortress desolate and still under freezing northern winds. When fresh snow dusts the curved rooflines of Paldalmun and coats the fortress bricks, the town takes on a austere, cinematic quiet. March brings the first hints of thaw, but the ground remains cold and the wind stubborn. Unless you specifically desire the frosty solitude of a snow-covered fortress, the late winter months demand heavy thermal layers, frequent retreats indoors, and plenty of patience.