Climate averages 1991–2020
Osan weather
in November.
A cool, moderately wet month: the 8th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
November is a cool month in Osan: daytime highs average 11.3°C and nights cool to about 2.6°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 47 mm of rain on roughly 7 days, which makes November a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 13 min on an average November day.
The nearest other city in this atlas is Suwon (16 km away). In November its highs average 11.0°C, about as warm as Osan, with 47 mm of rain.
Among the 79 cities listed in South Korea, Osan ranks 51st of 79 for the warmest November highs and joint 31st of 79 for the driest November (rainfall, lowest first). The mean November high of those 79 cities is 12.3°C; Osan is 1.0°C cooler than that mean.
From November to December, average highs fall by 7.1°C to 4.2°C, and monthly rainfall falls from 47 mm to 23 mm.
The annual picture
November in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Osan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.2°C-5.5°C | -5.5°C | 20 | 3.8 | 9.910 h |
| February | 4.9°C-3.8°C | -3.8°C | 27 | 4.1 | 10.811 h |
| March | 10.2°C0.1°C | 0.1°C | 39 | 6.1 | 11.912 h |
| April | 16.8°C5.7°C | 5.7°C | 69 | 7.1 | 13.113 h |
| May | 22.2°C11.6°C | 11.6°C | 88 | 7.1 | 14.114 h |
| June | 26.5°C17.1°C | 17.1°C | 118 | 7.6 | 14.715 h |
| July | 28.2°C21.6°C | 21.6°C | 279 | 15.3 | 14.414 h |
| August | 28.8°C22.3°C | 22.3°C | 231 | 14.0 | 13.614 h |
| September | 24.8°C16.9°C | 16.9°C | 124 | 7.8 | 12.512 h |
| October | 18.9°C9.7°C | 9.7°C | 55 | 5.2 | 11.311 h |
| November, selected | 11.3°C2.6°C | 2.6°C | 47 | 7.3 | 10.210 h |
| December | 4.2°C-3.6°C | -3.6°C | 23 | 5.1 | 9.710 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
November in nearby cities
- Suwon in NovemberSouth Korea · 16 kmHigh 11.0°C · Low 2.4°C · 47 mm rain
- Pyeongtaek in NovemberSouth Korea · 18 kmHigh 11.4°C · Low 3.0°C · 46 mm rain
- Hwaseong-si in NovemberSouth Korea · 23 kmHigh 11.0°C · Low 4.9°C · 57 mm rain
- Ansan-si in NovemberSouth Korea · 29 kmHigh 11.1°C · Low 3.7°C · 57 mm rain
- Anyang-si in NovemberSouth Korea · 30 kmHigh 10.8°C · Low 3.0°C · 47 mm rain
- Seongnam-si in NovemberSouth Korea · 32 kmHigh 10.8°C · Low 2.1°C · 50 mm rain
- Gwangju, South Korea in NovemberSouth Korea · 33 kmHigh 11.0°C · Low 2.2°C · 50 mm rain
- Icheon-si in NovemberSouth Korea · 36 kmHigh 10.9°C · Low 1.9°C · 47 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Osan) is explained once on the Osan year overview and on the Sources, method and limits page.
Suwon lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.