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Weather in Irvine, California for December 2025

Your guide to Irvine weather in December - trends and predictions

    Temperatures

  • Until now, December 2025 in Irvine has been nearly identical to the historical average, with a temperature of 20 °F (showing only a slight deviation of 0.3 °F).

  • The forecast for the next days in Irvine predicts temperatures to be around 19 °F, close to the historical average.

  • In general, the average temperature in Irvine at the beginning of December is 19.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 16.6 °F by the end of December.

    • Rain 🌧️

  • Irvine experiences moderate rainfall in December, with an average of 8 rainy days and a total precipitation of 34 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
23
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/11°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
57 %
Avg humidity

Irvine Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
20°
2
Sunny
18°
3
Sunny
18°
4
Overcast
19°
5
Sunny
21°
6
Partly cloudy
21°
7
Partly cloudy
19°
8
Partly cloudy
20°
9
Cloudy
23°
10
Sunny
23°
11
Overcast
19°
12
Sunny
16°
13
Sunny
19°
14
Overcast
19°
15
Sunny
21°
16
Sunny
21°
17
Fog
20°
18
Sunny
23°
19
Partly cloudy
21°
20
Sunny
21°
21
Sunny
22°
22
Sunny
22°
23
Sunny
20°
24
Patchy rain possible
18°
25
Patchy rain possible
17°
26
Sunny
17°
27
Sunny
17°
28
Patchy rain possible
16°
29
Partly cloudy
16°
30
Patchy rain possible
17°
31
Moderate rain at times
16°

Temperatures trend during December in Irvine

See the weather trend as well as the moving average line

December weather in Irvine day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Overcast
Overcast
 20° /9° 0 mm 5
Dec. 2 Sunny
Sunny
 18° /8° 0 mm 5
Dec. 3 Sunny
Sunny
 18° /8° 0 mm 5
Dec. 4 Overcast
Overcast
 19° /8° 0 mm 5
Dec. 5 Sunny
Sunny
 21° /8° 0 mm 6
Dec. 6 Partly cloudy
Partly cloudy
 21° /10° 0 mm 6
Dec. 7 Partly cloudy
Partly cloudy
 19° /9° 0 mm 5
Dec. 8 Partly cloudy
Partly cloudy
 20° /8° 0 mm 5
Dec. 9 Cloudy
Cloudy
 23° /8° 0 mm 6
Dec. 10 Sunny
Sunny
 23° /8° 0 mm 6
Dec. 11 Overcast
Overcast
 19° /11° 0 mm 5
Dec. 12 Sunny
Sunny
 16° /11° 0 mm 4
Dec. 13 Sunny
Sunny
 19° /9° 0 mm 5
Dec. 14 Overcast
Overcast
 19° /11° 0 mm 5
Dec. 15 Sunny
Sunny
 21° /12° 0 mm 5
Dec. 16 Sunny
Sunny
 21° /11° 0 mm 6
Dec. 17 Fog
Fog
 20° /12° 0 mm 0.6
Dec. 18 Sunny
Sunny
 23° /12° 0 mm 0.7
Dec. 19 Partly cloudy
Partly cloudy
 21° /13° 0 mm 0.6
Dec. 20 Sunny
Sunny
 21° /16° 0 mm 0.7
Dec. 21 Sunny
Sunny
 22° /16° 0 mm 0
Dec. 22 Sunny
Sunny
 22° /16° 0 mm 5
Dec. 23 Sunny
Sunny
 20° /16° 0 mm 5
Dec. 24 Patchy rain possible
Patchy rain possible
 18° /16° 1.6 mm 4
Dec. 25 Patchy rain possible
Patchy rain possible
 17° /15° 3.5 mm 4
Dec. 26 Sunny
Sunny
 17° /13° 0 mm 4
Dec. 27 Sunny
Sunny
 17° /12° 0 mm 4
Dec. 28 Patchy rain possible
Patchy rain possible
 16° /13° 0 mm 3
Dec. 29 Partly cloudy
Partly cloudy
 16° /13° 0 mm 4
Dec. 30 Patchy rain possible
Patchy rain possible
 17° /14° 1 mm 4
Dec. 31 Moderate rain at times
Moderate rain at times
 16° /11° 7.9 mm 4
Next
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?
In December, Irvine can expect light to moderate rainfall, totaling 34 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
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 8 rainy days in December with a total of 34 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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Get accurate weather forecasts for Irvine, located at latitude 33.669 and longitude -117.823. Stay updated with localized weather information tailored for Irvine.

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