Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December, on average, is the coldest month, registering a high temperature of 55.4°F (13°C) and a low of 43.9°F (6.6°C).Humidity
The average relative humidity in December in Pinole is 71%.Rainfall
In December, in Pinole, the rain falls for 10.4 days. Throughout December, 2.13" (54mm) of precipitation is accumulated. Throughout the year, there are 72.2 rainfall days, and 12.83" (326mm) of precipitation is accumulated.Ocean temperature
In Pinole, the average seawater temperature in December is 54.1°F (12.3°C).Note: Swimming in 54.1°F (12.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Pinole.On the first day of the month, sunrise is at 7:07 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:25 am and sunset at 5:00 pm PST.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year in Pinole.UV index
The months with the lowest UV index in Pinole are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 3 in December translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What are the coldest months in Pinole?
What are the temperatures in Pinole in December?
What is the average humidity in December in Pinole?
How much does it rain in Pinole in December?
What is the ocean temperature in December in Pinole?
What is the month with the shortest days in Pinole?
What is the average length of the day in December in Pinole?
When are sunrise and sunset in December in Pinole?
What is the month with the least sunshine in Pinole?
How many hours of sunshine does Pinole have in December?
What is the month with the lowest UV index in Pinole?
What is the UV index reading in December in Pinole?
Average temperature in December
Pinole, CA
- Average high temperature in December: 55.4°F
The warmest month (with the highest average high temperature) is September (77.5°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in December: 43.9°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (43.9°F).
Average pressure in December
Pinole, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in December
Pinole, CA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is May (7.5mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in December
Pinole, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (63%).
Average rainfall in December
Pinole, CA
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is February (2.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Pinole, CA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (1.1 days).
Average sea temperature in December
Pinole, CA
- Average sea temperature in December: 54.2°F
The best month for swimming (with the highest average sea temperature) is September (57°F).
The coldest month (with the lowest average sea temperature) is April (52.6°F).
Average daylight in December /
Average sunshine in December
Pinole, CA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Pinole, CA
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (16.4 days).
Average UV index in December
Pinole, CA
- Average UV index in December: 3
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Pinole, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in December
Pinole, CA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Pinole, California, USA
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