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Santa Catalina Island (CA)
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Weather in Santa Catalina Island, California for December 2026

Your guide to Santa Catalina Island weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in Santa Catalina Island at the beginning of December is 16.9 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 16.4 °F by the end of December.

    • Rain 🌧️

  • With an average of 4 rainy days, Santa Catalina Island experiences minimal rainfall in December.

    • More

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Average dry days
27
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/12°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
88 %
Avg humidity

Santa Catalina Island Weather December

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

Temperatures trend during December in Santa Catalina Island

See the weather trend as well as the moving average line

December weather in Santa Catalina Island day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Overcast
Overcast
 21° /14° 0 mm 1
Dec. 2 Fog
Fog
 17° /12° 0 mm 0
Dec. 3 Fog
Fog
 16° /12° 0 mm 0
Dec. 4 Partly cloudy
Partly cloudy
 17° /14° 0 mm 1
Dec. 5 Sunny
Sunny
 18° /14° 0 mm 1
Dec. 6 Fog
Fog
 15° /11° 0 mm 0
Dec. 7 Fog
Fog
 14° /10° 0 mm 0
Dec. 8 Fog
Fog
 17° /11° 0 mm 0
Dec. 9 Sunny
Sunny
 22° /17° 0 mm 1
Dec. 10 Fog
Fog
 17° /13° 0 mm 0
Dec. 11 Fog
Fog
 15° /11° 0 mm 0
Dec. 12 Fog
Fog
 15° /11° 0 mm 0
Dec. 13 Fog
Fog
 15° /11° 0 mm 0
Dec. 14 Fog
Fog
 15° /12° 0 mm 0
Dec. 15 Fog
Fog
 17° /12° 0 mm 0
Dec. 16 Fog
Fog
 15° /11° 0 mm 0
Dec. 17 Fog
Fog
 15° /11° 0 mm 0
Dec. 18 Partly cloudy
Partly cloudy
 18° /15° 0 mm 1
Dec. 19 Fog
Fog
 16° /12° 0 mm 0
Dec. 20 Fog
Fog
 15° /12° 0 mm 0
Dec. 21 Fog
Fog
 16° /12° 0 mm 0
Dec. 22 Fog
Fog
 16° /12° 0 mm 0
Dec. 23 Fog
Fog
 17° /14° 0 mm 0
Dec. 24 Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /13° 96.3 mm 0
Dec. 25 Heavy rain at times
Heavy rain at times
 17° /13° 5.5 mm 0
Dec. 26 Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /13° 54.6 mm 0
Dec. 27 Overcast
Overcast
 14° /11° 0 mm 1
Dec. 28 Fog
Fog
 15° /8° 0 mm 1
Dec. 29 Partly cloudy
Partly cloudy
 18° /12° 0 mm 1
Dec. 30 Overcast
Overcast
 16° /13° 0 mm 1
Dec. 31 Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /16° 23.9 mm 0
Next
Important Notice
Our weather forecast for Santa Catalina Island 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 Santa Catalina Island forecast closer to your planned date for the most up-to-date weather information.
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Santa Catalina Island in December - FAQ

What are the expected maximum and minimum temperatures in Santa Catalina Island during December?

Enjoy moderate daytime temperatures of up to 17° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Santa Catalina Island during December?

Significant rainfall exceeding 180.3 mm is expected in Santa Catalina Island during December, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Santa Catalina Island during December?

The average wind speed in Santa Catalina Island during December is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Santa Catalina Island

Explore the daily rainfall trends and prepare for Santa Catalina Islands December weather 💧
Typically, Santa Catalina Island has 4 rainy days in December with a total of 180.3 mm of rainfall.

UV exposure in Santa Catalina Island during December

Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️

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Location coordinates Where is Santa Catalina Island?

Get accurate weather forecasts for Santa Catalina Island, located at latitude 33.383 and longitude -118.418. Stay updated with localized weather information tailored for Santa Catalina Island.

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