Gilroy Weather in December

December in Gilroy averages 16°C (61°F) during the day and 4°C (39°F) at night. It is the wettest month of the year, with 98 mm (3.9 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Gilroy in December

This is the wettest month of the year, so having an umbrella ready is a smart choice. Typically around 10 days of rainfall are expected, averaging 98 mm (3.9 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Gilroy in December

In December, expect moderate temperatures in Gilroy, with highs of 16°C (61°F) and lows of 4°C (39°F) at night. December is typically considered a winter month. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 4°C (39°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Enjoy a month of mild temperatures, still offering warmth and comfort throughout.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. March, April, May, June, September, October and November typically offer the best weather for Gilroy.