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Tokyo, Japan All-Time Weather Extremes

The most extreme temperature, precipitation, and snowfall ever recorded in Tokyo, from NOAA GHCN daily weather observations.

Station: IRUMA
All-time weather extremes for Tokyo, Japan, from NOAA daily observations at IRUMA
Temperature
Record High104°F (40°C)August 5, 2025
Record Low15°F (-9°C)January 26, 1960
Lowest High32°F (0°C)February 8, 2026
Highest Low84.2°F (29°C)August 5, 2025
Highest Mean94.1°F (35°C)August 5, 2025
Lowest Mean28.4°F (-2°C)February 8, 2026
Precipitation
Max in One Calendar Day9.28" (235.7 mm)September 26, 1958
Max in One Month18.07" (458.9 mm)September 1958
Least in One Month0.04" (1.0 mm)January 1957
Max in One Year77.97" (1980.5 mm)1950
Least in One Year50.71" (1288.1 mm)1960
Snowfall
Max in One Calendar Day11.3" (28.7 cm)January 24, 1954
Max in One Month25.7" (65.4 cm)February 1952
Max in One Season39.8" (101.0 cm)1951-52
Max in One Year39.8" (101.0 cm)1952
Earliest Snow0.1" (0.3 cm)November 29, 1950
Earliest Measurable Snow0.1" (0.3 cm)November 29, 1950
Latest Snow2.6" (6.6 cm)April 1, 1956
Latest Measurable Snow2.6" (6.6 cm)April 1, 1956
Period of Record
TemperatureJanuary 1, 1949 – February 12, 2026
PrecipitationJanuary 1, 1949 – December 31, 1960
SnowfallJanuary 1, 1949 – December 31, 1960

Note: Records compiled from NOAA GHCN-Daily observations at IRUMA (19 mi from Tokyo, Japan). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.

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Tokyo, Japan all-time weather extremes table — record high 104°F on August 5, 2025, record low 15°F on January 26, 1960, with precipitation and snowfall records from NOAA data

Frequently Asked Questions

What is the hottest temperature ever recorded in Tokyo, Japan?

The all-time record high in Tokyo, Japan is 104°F (40°C), set on August 5, 2025.

What is the coldest temperature ever recorded in Tokyo, Japan?

The all-time record low in Tokyo, Japan is 15°F (-9°C), set on January 26, 1960.

What is the most rain Tokyo, Japan has ever had in one day?

The most precipitation recorded in one calendar day near Tokyo, Japan is 9.28 inches, on September 26, 1958.

What is the biggest snowfall ever recorded in Tokyo, Japan?

The most snow recorded in one calendar day near Tokyo, Japan is 11.3 inches, on January 24, 1954.

Weather Extremes in Other Japan Cities

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