St. Helena weather in December (California, United States of America)
What can you expect from the weather in St. Helena during December? Here's what the weather might have in store during this month.
In December, St. Helena generally has moderate temperatures and heavy rainfall. December falls within the winter season. Daytime temperatures hover around 14°C, while nights can cool down to about 4°C. On average, December has the most moderate temperatures of the year.
St. Helena in December usually receives heavy rainfall, averaging around 175 mm for the month. It records the year's peak rainfall, often coming down quite heavily. We recommend bringing a poncho, which will keep you dry. Delving into the climate records from the past 30 years, one can predict that nearly 14 days of the month will see rainfall.
The area experiences a moderate amount of sunshine, with approximately 160 hours of sunlight expected. This makes it neither too gloomy nor overly bright.
If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit St. Helena. April, May, June, July, August, September and October typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.
For an in-depth look at the yearly conditions, visit our specialized St. Helena climate page with graphs.
St. Helena, monthly averages in December
Min Temperature
4°C
Max Temperature
14°C
Chance of Rain
46%
Precipitation
175 mm
Rainy days
14 days
Sunshine
160 hours *
Percentage Sunshine
55% *
Where to go in the United States of America in December
Find out more about the weather in the United States of America in December and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in St. Helena in December?
Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in December.
Interested in more climate information?
This site provides you with all the information you need about the climate in St. Helena.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
