Frost Dates for Rotterdam, South Holland, Netherlands

Coordinates: 51.923, 4.479

Growing Season

The last spring air frost in Rotterdam, South Holland, Netherlands typically occurs around Apr 26, and the first autumn air frost around Oct 18. This gives a frost-free growing season of approximately 175 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 22°C (72°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Apr 26 (last spring) to Oct 18 (first autumn). Light ground frost (-1°C / 30°F): Apr 10 (last spring) to Nov 4 (first autumn). Hard ground frost (-2°C / 28°F): Mar 1 (last spring) to Dec 15 (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: Air Frost possible

for today based on past data only.

We predict a frost free growing season at your location from Apr 26 to Oct 18, which provides approximately 174 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 Apr 10 to Nov 4, which provides a total of 208 days for growing.

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