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Oshima Island (Tokyo): temperature and climate normals

Latest20.3 °COct 9, 2026 20:10 JST
24 h max / min24.1 °C / 17.4 °C
Annual mean (normal)16.4 °Crank 141 of 903
Annual precipitation (normal)2,858.9mmrank 42
Altitude74 m

Last 24 hours

Oshima Island24.117.420.321:0009:0020:10

Monthly normals: temperature

Oshima Island0°15°30°JanFebMarAprMayJunJulAugSepOctNovDec
Mean maxMeanMean min

Monthly precipitation (normal)

PrecipitationJan: 137.3JanFeb: 146.0FebMar: 238.4MarApr: 247.4AprMay: 256.5MayJun: 328.8JunJul: 255.9JulAug: 191.7AugSep: 341.3SepOct: 405.2OctNov: 192.8NovDec: 117.6Dec

Monthly sunshine (normal)

SunshineJan: 153.7JanFeb: 145.4FebMar: 158.1MarApr: 174.2AprMay: 179.7MayJun: 125.1JunJul: 150.8JulAug: 190.1AugSep: 141.0SepOct: 131.4OctNov: 140.3NovDec: 147.6Dec

Normals table (1991–2020)

MonthMeanMaxMin≥30°CMin<0°CPrecip.Sun
Jan7.5 °C11.0 °C3.9 °C0.0days1.7days137.3mm153.7h
Feb7.8 °C11.6 °C4.0 °C0.0days2.4days146.0mm145.4h
Mar10.4 °C14.2 °C6.6 °C0.0days0.4days238.4mm158.1h
Apr14.4 °C18.2 °C10.7 °C0.0days0.0days247.4mm174.2h
May18.2 °C21.9 °C14.8 °C0.0days0.0days256.5mm179.7h
Jun21.0 °C24.3 °C18.4 °C0.2days0.0days328.8mm125.1h
Jul24.6 °C27.8 °C22.2 °C7.4days0.0days255.9mm150.8h
Aug26.0 °C29.5 °C23.5 °C16.2days0.0days191.7mm190.1h
Sep23.4 °C26.7 °C20.8 °C4.0days0.0days341.3mm141.0h
Oct18.9 °C22.0 °C16.1 °C0.0days0.0days405.2mm131.4h
Nov14.5 °C17.8 °C11.3 °C0.0days0.0days192.8mm140.3h
Dec10.0 °C13.4 °C6.5 °C0.0days0.4days117.6mm147.6h
Year16.4 °C19.9 °C13.2 °C27.8days4.9days2,858.9mm1,837.2h

For reference: latest 20.3 °C; the Oct mean normal is 18.9 °C (one observation vs a monthly mean).

Other stations in Tokyo

Normals: JMA 2020 normals (1991–2020 averages). Latest values are observations fetched once a day, not real time.