Osan climate

Osan Weather in July

NASA POWER reanalysis for the half-degree grid cell around Osan, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 26°C on July 1 to 29°C on July 31, and lows from 19°C to 23°C. Normal precipitation for the month is 310 mm over about 19 wet days.

July day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Osan, in °C, with the record for each date.101520253035151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

July at a glance

Average high
27°C
Average low
21°C
Precipitation
310 mm
Reanalysis high
34°CJul 22, 2018
Reanalysis low
14°CJul 10, 1996
Daylight
14 h 41 min to 14 h 05 min
Cloud cover
77%
Humidity
86%
Dew point
21°C
Wind
12.6 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
Jul 126°C19°C31°C 201416°C 199350%
Jul 227°C19°C29°C 200017°C 199151%
Jul 327°C19°C30°C 200217°C 199953%
Jul 427°C19°C31°C 200016°C 201554%
Jul 527°C20°C33°C 201917°C 201155%
Jul 627°C20°C33°C 201917°C 199656%
Jul 727°C20°C31°C 201917°C 199656%
Jul 827°C20°C31°C 200815°C 199657%
Jul 927°C20°C33°C 201415°C 199659%
Jul 1027°C20°C31°C 201414°C 199658%
Jul 1127°C20°C32°C 201516°C 199658%
Jul 1227°C20°C31°C 199416°C 199958%
Jul 1327°C20°C31°C 199418°C 199658%
Jul 1427°C21°C30°C 201417°C 200359%
Jul 1527°C21°C32°C 201517°C 200760%
Jul 1627°C21°C31°C 201418°C 201561%
Jul 1727°C21°C32°C 199416°C 201562%
Jul 1827°C21°C32°C 199418°C 200361%
Jul 1928°C21°C33°C 201917°C 199359%
Jul 2028°C21°C31°C 201415°C 199358%
Jul 2128°C22°C32°C 201814°C 199358%
Jul 2228°C22°C34°C 201814°C 199358%
Jul 2328°C22°C33°C 199416°C 199356%
Jul 2428°C22°C33°C 199418°C 200654%
Jul 2528°C22°C32°C 199419°C 200954%
Jul 2628°C22°C32°C 199419°C 200955%
Jul 2728°C22°C32°C 201819°C 201456%
Jul 2829°C22°C32°C 199420°C 201456%
Jul 2929°C23°C32°C 199419°C 200956%
Jul 3029°C23°C33°C 201819°C 200356%
Jul 3129°C23°C32°C 201820°C 199356%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Osan, in percent.0204060801102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+9).

July 1
sunrise 5:15 AM, sunset 7:56 PM
July 31
sunrise 5:35 AM, sunset 7:40 PM

Every day of July: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.