Frost Dates for Tokyo, Tokyo, Japan

Coordinates: 35.690, 139.692

Growing Season

The last spring air frost in Tokyo, Tokyo, Japan typically occurs around Mar 16, and the first autumn air frost around Nov 17. This gives a frost-free growing season of approximately 246 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 8b, where the average annual extreme minimum temperature is -9.4 to -6.7°C (15 to 20°F). This zone rating helps gardeners determine which perennial plants are likely to survive winter.

Temperature Overview

The coldest month is January, with an average low of 3°C (37°F). The warmest month is August, with an average high of 31°C (88°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Mar 16 (last spring) to Nov 17 (first autumn). Light ground frost (-1°C / 30°F): Mar 1 (last spring) to Nov 29 (first autumn). Hard ground frost (-2°C / 28°F): Jan 24 (last spring) to Jan 1 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 8b

... and the frost data for your area is ...

Current Risk Level: Unlikely (Safest)

for today based on past data only.

We predict a frost free growing season at your location from Mar 16 to Nov 17, which provides approximately 245 frost free days.

For the less tender plants, or if you are planning to protect your plants with fleece etc, your growing season could stretch from Mar 1 to Nov 29, which provides a total of 273 days for growing.

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