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Sea
15°
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15°
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15°
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16°
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16°
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18°
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19°
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20°
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19°
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17°
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16°
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15°
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The weather in December is noticeably colder than the previous month. December has average maximum temperatures of 18°C (65°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 71.5% making it sunny and pleasant most of the time. The hours of sunshine per day are 7.2hrs making the days quite long and bright. It is not a good time for sunbathing in San Diego County.
December has total rainfall of 5.3cm (2.1inches) making it mostly dry with only light showers. There are just 9.4 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days.
Sea temperatures are a cold 15°C (59°F). December is too cold for swimming in San Diego County for any length of time, unless you have a wetsuit. The sea temperature in December is marginally cooler than the previous month and temperatures continue to drop slightly into January.
Consider visiting San Diego County in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for December.
No, December is not a good time for sunbathing in San Diego County.
December has average maximum temperatures of 18°C (65°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 71.5% making it sunny and pleasant most of the time. The hours of sunshine per day are 7.2hrs making the days quite long and bright. December has total rainfall of 5.3cm (2.1inches) making it mostly dry with only light showers. There are just 9.4 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days.
More about December temperature and sunshine.
No, December is too cold for swimming in San Diego County for any length of time, with the sea water at 15°C (59°F), unless you have a wetsuit.
More about December sea temperatures.
Yes, December is a good time for a holiday in San Diego County.
December has average maximum temperatures of 18°C (65°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 71.5% making it sunny and pleasant most of the time. The hours of sunshine per day are 7.2hrs making the days quite long and bright. December has total rainfall of 5.3cm (2.1inches) making it mostly dry with only light showers. There are just 9.4 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days. It is not a good time for sunbathing in San Diego County. Sea temperatures are a cold 15°C (59°F). December is too cold for swimming in San Diego County for any length of time, unless you have a wetsuit.
More about the December temperatures and sunshine.
Yes, San Diego County is not that warm but sunbathing may be possible on some clear days in December.
The average maximum temperature in San Diego County in December is 18°C (65°F). The average maximum temperature is 21°C (71°) in the previous month and 19°C (66°F) in the next month.
The average temperature in San Diego County in December is 13°C (55°F). The average temperature is 16°C (60°F) in the previous month and 13°C (56°F) in the next month.
More info about the December temperatures and sunshine.
The average day light hours per day in San Diego County in December are 10. The sunshine percentage is 71.5% making it sunny and pleasant most of the time. The hours of sunshine per day are 7.2hrs making the days quite long and bright.
More about December sunshine.
The weather in December is noticeably colder than the previous month. The average maximum temperature in San Diego County in December is 18°C (65°F). The average maximum temperature is 21°C (71°F) in the previous month and 19°C (66°F) in the next month.
The average temperature in San Diego County in December is 13°C (55°F). The average temperature is 16°C (60°F) in the previous month and 13°C (56°F) in the next month.
The average minimum temperature in San Diego County in December is 8°C (46°F). The minimum temperature is 11°C (51°F) in the previous month and 8°C (46°F) in the next month.
The days in December are slightly shorter than the previous month. December has slightly less hours of sunshine than the previous month. During December the average day light hours are 10 per day in San Diego County. The sunshine percentage is 71.5% making it sunny and pleasant most of the time. The hours of sunshine per day are 7.2hrs making the days quite long and bright.
The ultraviolet index in San Diego County in December is typically 3.5 during December. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in San Diego County in December is 14.9°C (58.8°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. The sea temperature in December is marginally cooler than the previous month and temperatures continue to drop slightly into January.
December weather is slightly wetter than the previous month. December has a few more days of rain than the previous month. The average total rainfall in San Diego County in December is 5.3cm (2.1inches) and on average there are 9.4 rainy days in December making it a quite rainy time to visit the beach.
The maximum dew point (an indicator of humidity) in San Diego County in December is 9°C (49°F) which is a bit dry for some. The dew point is 11°C (52°F) in the previous month and 8°C (8°F) in the next month.
The average maximum relative humidity in San Diego County in December is typically 85.2%. The maximum relative humidity is 83.4% in the previous month and 81.6% in the next month.
The average relative humidity in San Diego County in December is typically 66.1%. The average relative humidity is 64.1% in the previous month and 61.8% in the next month.
The average maximum wind speed in San Diego County in December is typically 18KM/H (11MPH). The average maximum wind speed is 18KM/H (11MPH) in the previous month and 18KM/H (11MPH) in the next month.
The average wind speed in San Diego County in December is typically 8KM/H (5MPH). The average wind speed is 7KM/H (4MPH) in the previous month and 7KM/H (5MPH) in the next month.
The average wind direction in San Diego County in December is from the East-Southeast.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
