City · South Korea
Best time to visit Seongnam-si
The best time to visit Seongnam-si is April–June and September and October, with daytime temperatures around 25°C.
Seongnam-si at a glance: warmest in August with daytime temperatures around 31°C and coolest in January (2°C). The wettest month is July (371 mm) and the driest January (20 mm), with about 1,360 mm of rain a year. The sea is warmest in August (26°C). Sunniest in January.
Eddigo
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Seongnam-si
70 mWarm
85
24°/12°15°100 mm56 %14 h
A typical mid-May in Seongnam-si
Sunny 16Cloudy 6Rain 8
Daytime temperature (night ☾)
12°19°29°−12°36°
Sea temperature
15°−12°36°
Daylight (solar time)
04:5319:07
0006121824
14 h 15 m
Precipitation
0380 mm
100 mm
Air feel
FreshComfortableHumidMuggy
RH 62 %
Month by month
| Month | Score | Day | Night | Sea | Rain | Wet days | Sun | Daylight | Feels like |
|---|---|---|---|---|---|---|---|---|---|
| January | 55 | 2° | −9° | 5° | 20 mm | 7 | 66 % | 10 h | Cold, snowy and sunny |
| February | 53 | 6° | −6° | 3° | 26 mm | 7 | 59 % | 11 h | Chilly |
| March | 54 | 12° | −1° | 6° | 43 mm | 7 | 60 % | 12 h | Mild |
| April | 81 | 19° | 6° | 10° | 84 mm | 8 | 53 % | 13 h | Pleasantly warm |
| May | 85 | 25° | 12° | 15° | 101 mm | 8 | 56 % | 14 h | Warm |
| June | 73 | 28° | 17° | 20° | 138 mm | 10 | 42 % | 15 h | Warm |
| July | 38 | 30° | 22° | 24° | 371 mm | 16 | 28 % | 14 h | Rainy season · warm, showery and muggy |
| August | 45 | 31° | 22° | 26° | 297 mm | 14 | 39 % | 14 h | Rainy season · hot, showery and muggy |
| September | 81 | 27° | 16° | 24° | 150 mm | 8 | 43 % | 12 h | Rainy season · warm |
| October | 90 | 21° | 8° | 20° | 56 mm | 7 | 63 % | 11 h | Pleasantly warm |
| November | 45 | 12° | 1° | 14° | 50 mm | 9 | 53 % | 10 h | Mild |
| December | 50 | 4° | −7° | 9° | 23 mm | 8 | 61 % | 10 h | Cold and snowy |
The score (0–100) combines daytime temperature, rain days, humidity and cloud cover, weighted for a typical warm-weather trip: 20–28 °C, little rain. On the map you can change these preferences.
Climate averages 2016–2025 (ERA5, CRU TS). Sea temperature from ERA5. Not a forecast. Elevation: 65 m. Coordinates: 37.44, 127.14.