Oceanside (CA)
December
Weather in Oceanside, California for December 2026
Your guide to Oceanside weather in December - trends and predictions
In general, the average temperature in Oceanside at the beginning of December is 17 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 16 °C by the end of December.
Oceanside experiences moderate rainfall in December, with an average of 9 rainy days and a total precipitation of 61.8 mm.
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Temperatures
Rain 🌧️
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22
Dry days
9
Rainy days
0
Snow days
17°/11°
Temperatures
13 km/h
Avg max wind
69 %
Avg humidity
Oceanside Weather December
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Temperatures trend during December in Oceanside
See the weather trend as well as the moving average line
December weather in Oceanside day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Mist | 17° /10° | 0 mm | 5 | |
| Dec. 2 |  Partly cloudy | 16° /8° | 0 mm | 5 | |
| Dec. 3 |  Sunny | 16° /9° | 0 mm | 4 | |
| Dec. 4 |  Overcast | 17° /8° | 0 mm | 4 | |
| Dec. 5 | Partly cloudy | 18° /8° | 0 mm | 5 | |
| Dec. 6 | Partly cloudy | 18° /10° | 0 mm | 5 | |
| Dec. 7 | Partly cloudy | 17° /9° | 0 mm | 5 | |
| Dec. 8 | Sunny | 17° /9° | 0 mm | 5 | |
| Dec. 9 | Partly cloudy | 20° /8° | 0 mm | 6 | |
| Dec. 10 | Sunny | 21° /10° | 0 mm | 6 | |
| Dec. 11 | Overcast | 19° /11° | 0 mm | 4 | |
| Dec. 12 | Sunny | 16° /11° | 0 mm | 4 | |
| Dec. 13 | Sunny | 17° /10° | 0 mm | 4 | |
| Dec. 14 |  Cloudy | 17° /11° | 0 mm | 4 | |
| Dec. 15 | Sunny | 19° /11° | 0 mm | 5 | |
| Dec. 16 | Sunny | 18° /10° | 0 mm | 5 | |
| Dec. 17 | Partly cloudy | 18° /11° | 0 mm | 5 | |
| Dec. 18 | Partly cloudy | 21° /12° | 0 mm | 6 | |
| Dec. 19 |  Light rain shower | 17° /12° | 1.8 mm | 4 | |
| Dec. 20 | Partly cloudy | 17° /12° | 2.1 mm | 3 | |
| Dec. 21 |  Moderate rain at times | 17° /11° | 3.3 mm | 3 | |
| Dec. 22 | Light rain shower | 16° /11° | 3.5 mm | 3 | |
| Dec. 23 | Partly cloudy | 16° /12° | 0 mm | 3 | |
| Dec. 24 | Patchy rain possible | 16° /12° | 26.7 mm | 2 | |
| Dec. 25 | Sunny | 16° /11° | 1.2 mm | 3 | |
| Dec. 26 | Overcast | 16° /11° | 0.9 mm | 3 | |
| Dec. 27 | Overcast | 15° /10° | 1.4 mm | 3 | |
| Dec. 28 | Partly cloudy | 16° /8° | 0 mm | 3 | |
| Dec. 29 | Overcast | 17° /9° | 0 mm | 3 | |
| Dec. 30 | Light rain shower | 15° /11° | 18 mm | 3 | |
| Dec. 31 | Light rain shower | 17° /11° | 2.9 mm | 2 | |
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Important Notice
Our weather forecast for Oceanside in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Oceanside forecast closer to your planned date for the most up-to-date weather information.
Change Month
Oceanside in December - FAQ
What are the expected maximum and minimum temperatures in Oceanside during December?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Oceanside during December?
Moderate rainfall is anticipated in Oceanside during December, with a total of 61.8 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Oceanside during December?
The average wind speed in Oceanside during December is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Oceanside
Explore the daily rainfall trends and prepare for Oceansides December weather 💧
Typically, Oceanside has 9 rainy days in December with a total of 61.8 mm of rainfall.
UV exposure in Oceanside during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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Where is Oceanside?Get accurate weather forecasts for Oceanside, located at latitude 33.196 and longitude -117.379. Stay updated with localized weather information tailored for Oceanside.
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