Irvine (CA)
December
Weather in Irvine, California for December 2026
Your guide to Irvine weather in December - trends and predictions
In general, the average temperature in Irvine at the beginning of December is 19.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 16.7 °C by the end of December.
With an average of 4 rainy days, Irvine experiences minimal rainfall in December.
Is December a good time to visit Irvine? check out the best time to travel to Irvine page.
✨ Is December a good time to visit Irvine? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
27
Dry days
4
Rainy days
0
Snow days
19°/11°
Temperatures
11 km/h
Avg max wind
62 %
Avg humidity
Irvine Weather December
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Temperatures trend during December in Irvine
See the weather trend as well as the moving average line
December weather in Irvine day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 20° /9° | 0 mm | 3.1 | |
| Dec. 2 |  Sunny | 18° /8° | 0 mm | 3.1 | |
| Dec. 3 | Sunny | 18° /9° | 0 mm | 3.1 | |
| Dec. 4 | Overcast | 19° /9° | 0 mm | 3 | |
| Dec. 5 | Sunny | 21° /9° | 0 mm | 3 | |
| Dec. 6 |  Partly cloudy | 21° /10° | 0 mm | 3 | |
| Dec. 7 | Partly cloudy | 19° /9° | 0 mm | 3 | |
| Dec. 8 | Partly cloudy | 20° /9° | 0 mm | 3 | |
| Dec. 9 |  Cloudy | 22° /8° | 0 mm | 2.9 | |
| Dec. 10 | Sunny | 23° /9° | 0 mm | 2.9 | |
| Dec. 11 | Overcast | 19° /11° | 0 mm | 2.9 | |
| Dec. 12 | Sunny | 16° /11° | 0 mm | 2.9 | |
| Dec. 13 | Sunny | 18° /9° | 0 mm | 2.9 | |
| Dec. 14 | Overcast | 19° /12° | 0 mm | 2.9 | |
| Dec. 15 | Sunny | 21° /12° | 0 mm | 2.9 | |
| Dec. 16 | Sunny | 21° /11° | 0 mm | 2.9 | |
| Dec. 17 | Partly cloudy | 19° /12° | 0 mm | 2.9 | |
| Dec. 18 | Overcast | 22° /13° | 0 mm | 2.9 | |
| Dec. 19 |  Light rain | 19° /13° | 4.1 mm | 2.9 | |
| Dec. 20 | Light rain | 18° /12° | 3.2 mm | 2.9 | |
| Dec. 21 | Light rain | 18° /12° | 2.9 mm | 2.9 | |
| Dec. 22 |  Patchy rain possible | 18° /12° | 2 mm | 2.9 | |
| Dec. 23 |  Mist | 17° /11° | 0 mm | 2.9 | |
| Dec. 24 |  Heavy rain | 18° /13° | 30.1 mm | 2.9 | |
| Dec. 25 | Patchy rain possible | 19° /12° | 1.7 mm | 2.9 | |
| Dec. 26 |  Moderate rain | 18° /12° | 11.5 mm | 2.9 | |
| Dec. 27 | Patchy rain possible | 15° /11° | 1.1 mm | 2.9 | |
| Dec. 28 | Overcast | 17° /9° | 0.6 mm | 2.9 | |
| Dec. 29 | Partly cloudy | 17° /10° | 0.1 mm | 2.9 | |
| Dec. 30 | Light rain | 16° /10° | 3.6 mm | 2.9 | |
| Dec. 31 | Moderate rain | 16° /12° | 11.7 mm | 2.9 | |
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Important Notice
Our weather forecast for Irvine 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 Irvine forecast closer to your planned date for the most up-to-date weather information.
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Irvine in December - FAQ
What are the expected maximum and minimum temperatures in Irvine during December?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Irvine during December?
Moderate rainfall is anticipated in Irvine during December, with a total of 72.5 mm spread over approximately 4 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Irvine during December?
The average wind speed in Irvine during December is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Irvine
Explore the daily rainfall trends and prepare for Irvines December weather 💧
Typically, Irvine has 4 rainy days in December with a total of 72.5 mm of rainfall.
UV exposure in Irvine during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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