Weather

Osaka weather by month

The Japan Meteorological Agency's normals for its Osaka station: the average of the 30 years 1991 to 2020, month by month. They say what a month is usually like, not what this week will bring; for that, check a forecast.

Warnings and advisories now

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Forecast

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Typhoons now

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Month High / low Rain Sun
Jan 9.7° / 3.0° 47 mm 5.6 days 147 h
Feb 10.5° / 3.2° 61 mm 6.3 days 141 h
Mar 14.2° / 6.0° 103 mm 9.1 days 172 h
Apr 19.9° / 10.9° 102 mm 9.2 days 193 h
May 24.9° / 16.0° 137 mm 9.5 days 204 h
Jun 28.0° / 20.3° 185 mm 11.3 days 154 h
Jul 31.8° / 24.6° 174 mm 10.0 days 184 h
Aug 33.7° / 25.8° 113 mm 7.2 days 222 h
Sep 29.5° / 21.9° 153 mm 9.5 days 162 h
Oct 23.7° / 16.0° 136 mm 8.3 days 166 h
Nov 17.8° / 10.2° 73 mm 6.2 days 153 h
Dec 12.3° / 5.3° 56 mm 6.1 days 152 h

High and low: the average daily high and low (°C). Rain: the month's total, and the days with 1 mm or more. Sun: hours of sunshine in the month.

Summer heat

May1.1 days of 30°C or more, 0.0 of 35°C or more; 0.0 nights that stay at 25°C or above

June7.9 days of 30°C or more, 0.1 of 35°C or more; 1.0 nights that stay at 25°C or above

July22.6 days of 30°C or more, 3.7 of 35°C or more; 15.0 nights that stay at 25°C or above

August28.3 days of 30°C or more, 9.9 of 35°C or more; 21.4 nights that stay at 25°C or above

September14.4 days of 30°C or more, 0.8 of 35°C or more; 4.1 nights that stay at 25°C or above

Average days a month, 1991-2020. The hottest month is August, with an average high of 33.7°C (93°F).

Seasons to plan around

Cherry blossom

In an average year the agency's Osaka cherry opens on 27 Mar and is in full bloom on 4 Apr. In 2026 it opened on 26 Mar and was in full bloom on 3 Apr.

Rainy season

In the Kinki region the rainy season usually starts around 6 Jun and ends around 19 Jul. In 2026 it ran from around 2 Jun to around 9 Jul.

Typhoons

In an average year 3.4 typhoons pass within 300 km of a weather station in the Kinki region, from May to October, most in September (1.1 on average).

Autumn colours

In 2025 the agency saw Osaka's ginkgo turn yellow on 25 Nov (3 days later than normal) and its maple turn red on 4 Dec (3 days later than normal).

Source: Japan Meteorological Agency website, edited for this page by DealOsaka. Read from the agency’s own data on this device each time the page opens; the names are the agency’s own translations. JMA warnings for Osaka

Source: Japan Meteorological Agency website, edited for this page by DealOsaka. The agency’s forecast for Osaka Prefecture, read on this device each time the page opens: high and low at its Osaka station, chance of rain of 1 mm or more. Weather words are the agency’s own translations; where it has none, its English. JMA forecast for Osaka

Source: Japan Meteorological Agency website, edited for this page by DealOsaka. The typhoons the agency is tracking and its latest analysis of each, read on this device each time the page opens, in the words of its own multilingual dictionary; the distance from Osaka is worked out by DealOsaka from the centre. The track forecast is on the agency's typhoon page. JMA typhoon information

出典：気象庁ホームページ（https://www.data.jma.go.jp/stats/etrn/view/nml_sfc_ym.php?prec_no=62&block_no=47772、https://www.data.jma.go.jp/sakura/data/sakura003_07.html、https://www.data.jma.go.jp/sakura/data/phn_014.html、https://www.data.jma.go.jp/cpd/baiu/kako_baiu07.html、https://www.data.jma.go.jp/yoho/typhoon/statistics/average/average.html）を加工して作成 (公共データ利用規約（第1.0版）). Read 2026-10-01. DealOsaka laid the agency's tables out by month and wrote the sentences; no forecast is made here.

Sources and methods