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 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 is the coldest month, exhibiting average temperatures of 63°F (17.2°C) at the peak and 46.9°F (8.3°C) at the base.Humidity
The average relative humidity in December is 60%.Rainfall
December is the month with the most rainfall in Bonsall. Rain falls for 7.2 days and accumulates 1.85" (47mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:35 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:52 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6.6h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 3 in December suggests the following recommendations:
Take precautions - Protection against sunburn is recommended. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What is the temperature in December?
What is the average humidity in December?
What is the wettest month?
How many days does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Bonsall have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Bonsall, CA
- Average high temperature in December: 63°F
The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in December: 46.9°F
The month with the highest average low temperature is August (63°F).
The coldest months (with the lowest average low temperature) are February and December (46.9°F).
Average pressure in December
Bonsall, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Bonsall, CA
- Average wind speed in December: 4.8mph
The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is October (4.3mph).
Average humidity in December
Bonsall, CA
- Average humidity in December: 60%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall in December
Bonsall, CA
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Bonsall, CA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.2 days).
Average daylight in December /
Average sunshine in December
Bonsall, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Bonsall, CA
- Average sunshine days in December: 22.2 days
The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is February (20 days).
Average UV index in December
Bonsall, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Bonsall, CA
- Average cloud cover in December: 24
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Bonsall, 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).
Bonsall, California, USA
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