Frost Dates for Istanbul, Istanbul, Turkey

Coordinates: 41.019, 28.965

Growing Season

The last spring air frost in Istanbul, Istanbul, Turkey typically occurs around Mar 16, and the first autumn air frost around Dec 7. This gives a frost-free growing season of approximately 266 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 9b, where the average annual extreme minimum temperature is -3.9 to -1.1°C (25 to 30°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 6°C (43°F). The warmest month is July, with an average high of 29°C (84°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Mar 16 (last spring) to Dec 7 (first autumn). Light ground frost (-1°C / 30°F): Jan 17 (last spring) to Jan 9 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 9b

... 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 Dec 7, which provides approximately 265 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 Jan 17 to Jan 9, which provides a total of 357 days for growing.

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