Sejong, Sejong-si Climate
South Korea
Pop. 394,630 Elev. 49 m / 161 ft
TZ: Asia/Seoul (UTC+9) ·
Sejong is largely arid, with hot summers peaking at 90°F (32°C) in July and cold winters around 22°F (-6°C) in February. Humidity pushes the summer feels-like temperature to 110°F (43°C), while wind chill can drive winter lows to 15°F (-9°C). Precipitation occurs on roughly 49 days per year (52.4 in / 1331 mm total), with snow on 1 days and 14 in (346 mm) of annual accumulation. The city averages 113 sunny days per year and around 24 thunderstorm days. Ocean water temperatures reach 84°F (29°C) in summer.
| Temperature | 32°C (90°F) high | -5°C (22°F) low |
| Feels like | 43°C (110°F) high | -9°C (15°F) low |
| Rain | 49 days | 1331 mm (52.4 in) /yr |
| Snow | 1 days | 346 mm (13.6 in) /yr |
| Sky | 113 sunny | 24 stormy |
| Wind | 1.3 m/s (2.9 mph) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May
Sky & Air by Month
Cloud cover (%)
48
Jan 42
Feb 53
Mar 48
Apr 60
May 69
Jun 61
Jul 67
Aug 75
Sep 73
Oct 35
Nov 47
Dec Humidity (%)
64
Jan 55
Feb 54
Mar 51
Apr 62
May 66
Jun 72
Jul 79
Aug 80
Sep 78
Oct 65
Nov 64
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 23 km Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ)
Ski resort 45 km
National park 27 km 계룡산국립공원
Mountain peak
(1,522 m) 90 km 설천봉
Hospital 2 km 중앙요양병원
Hiking trail 21 km
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 5°C 40°F | -4°C 24°F | 8 mm 0.3 in | 91 mm3.6 in | 12 |
| February | 4°C 40°F | -5°C 22°F | 3 mm 0.1 in | 73 mm2.9 in | 13 |
| March | 14°C 57°F | 3°C 37°F | 40 mm 1.6 in | 114 mm4.5 in | 11 |
| April | 21°C 69°F | 8°C 46°F | 58 mm 2.3 in | 29 mm1.1 in | 11 |
| May | 23°C 74°F | 13°C 55°F | 91 mm 3.6 in | — | 9 |
| June | 29°C 84°F | 20°C 67°F | 251 mm 9.9 in | — | 4 |
| July | 32°C 90°F | 24°C 75°F | 220 mm 8.7 in | — | 10 |
| August | 32°C 89°F | 24°C 75°F | 127 mm 5.0 in | — | 4 |
| September | 27°C 81°F | 20°C 68°F | 278 mm 10.9 in | — | 2 |
| October | 21°C 70°F | 13°C 56°F | 211 mm 8.3 in | — | 3 |
| November | 15°C 58°F | 3°C 37°F | 11 mm 0.5 in | 1 mm0.0 in | 21 |
| December | 6°C 44°F | -3°C 27°F | 32 mm 1.3 in | 37 mm1.5 in | 13 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 12 | 0 |
| February | 13 | 0 |
| March | 11 | 0 |
| April | 11 | 0 |
| May | 9 | 3 |
| June | 4 | 4 |
| July | 10 | 4 |
| August | 4 | 2 |
| September | 2 | 8 |
| October | 3 | 3 |
| November | 21 | 0 |
| December | 13 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 8°C 47°F | 0°C 32°F |
| February | 5°C 42°F | 0°C 32°F |
| March | 7°C 45°F | 3°C 37°F |
| April | 12°C 53°F | 10°C 51°F |
| May | 16°C 61°F | 15°C 60°F |
| June | 23°C 73°F | 21°C 71°F |
| July | 27°C 80°F | 28°C 82°F |
| August | 29°C 84°F | 28°C 82°F |
| September | 29°C 84°F | 24°C 75°F |
| October | 24°C 75°F | 17°C 63°F |
| November | 17°C 63°F | 8°C 47°F |
| December | 13°C 55°F | 2°C 35°F |