Oshima Arpt

Weather station · 34.8°N 139.4°E · 37 m above sea level

ICAO RJTOWMO 47735Station data since 1951

Right now21.0°C00:00 UTC · 8 h agoSource: NOAA METAR

Today so far21.0°/21.0°High at 00:00 UTC · low at 00:00 UTCSource: NOAA METAR and SYNOP

All-time record high34.3°CWednesday, 21 July 2004 · highest in available records since 1951Source: NOAA GHCN-Daily

All-time record low−10.2°CSunday, 28 January 1990 · lowest in available records since 1951Source: NOAA GHCN-Daily

On this day · 23 September

Record high

29.5°C

in 2010

Record low

12.4°C

in 1964

Average high

23.9°C

all years on record

Record watch

8.5°C short of the record for 23 September

Today’s high 21.0°C against 29.5°C in 2010. A reading that beats it is flagged here automatically, once a second cycle confirms it.

All-time record high

34.3°C

Date: Wednesday, 21 July 2004
Time of day: Not recorded. The daily archive stores the day, not the hour.
Location: Oshima Arpt, Japan
Position: 34.78°N 139.36°E · 37 m

Highest highest in available records since 1951. Source: NOAA GHCN-Daily.

All-time record low

−10.2°C

Date: Sunday, 28 January 1990
Time of day: Not recorded. The daily archive stores the day, not the hour.
Location: Oshima Arpt, Japan
Position: 34.78°N 139.36°E · 37 m

Highest and lowest lowest in available records since 1951. Source: NOAA GHCN-Daily.

Where Oshima Arpt is

34.78°N 139.36°E

Every year on record

1951 to 2026

Annual average · °C

Trend over 67 years with data: +0.42 °C per decade

Source: NOAA GHCN-Daily. Years the station did not cover are left as gaps, never joined across. The dashed line is a least squares trend through the years that have data.

Records by month

Jan

20.9°

−10.2°

Feb

21.0°

−4.0°

Mar

22.5°

−1.4°

Apr

25.5°

0.1°

May

28.4°

5.3°

Jun

32.3°

10.5°

Jul

34.3°

12.4°

Aug

34.1°

16.0°

Sep

33.7°

Recent days

Daily highest and lowest air temperature at Oshima Arpt, most recent first.
Day	High	At	Low	At
2026-09-23	21.0°C	00:00 UTC	21.0°C	00:00 UTC
2026-09-22	21.0°C	23:00 UTC	21.0°C	23:00 UTC

Nearby stations

Data sources for this page

Where each figure on this page comes from.
Figure	Source	Type
Right now, today so far	NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP)	Measured, station
All-time, monthly and on-this-day records	NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1951 to 2026	Measured, station
Nearby stations and distances	Computed from station positions in our own database	Calculated