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Oceanside (CA)
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Oceanside (CA)
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United States weather

Weather in Oceanside, California for December 2025

Your guide to Oceanside weather in December - trends and predictions

    Temperatures

  • Until now, December 2025 in Oceanside has been nearly identical to the historical average, with a temperature of 17.6 °F (showing only a slight deviation of -0.1 °F).

  • The forecast for the next days in Oceanside predicts temperatures to be around 18 °F, close to the historical average.

  • In general, the average temperature in Oceanside at the beginning of December is 17 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 16 °F by the end of December.

    • Rain 🌧️

  • Oceanside experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 22.7 mm.

    • More

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

Average dry days
25
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/10°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Oceanside Weather December

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

Temperatures trend during December in Oceanside

See the weather trend as well as the moving average line

December weather in Oceanside day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Mist
Mist
 17° /10° 0 mm 5
Dec. 2 Partly cloudy
Partly cloudy
 16° /8° 0 mm 5
Dec. 3 Sunny
Sunny
 16° /9° 0 mm 4
Dec. 4 Overcast
Overcast
 17° /8° 0 mm 4
Dec. 5 Partly cloudy
Partly cloudy
 18° /8° 0 mm 5
Dec. 6 Partly cloudy
Partly cloudy
 18° /10° 0 mm 5
Dec. 7 Partly cloudy
Partly cloudy
 17° /9° 0 mm 5
Dec. 8 Sunny
Sunny
 17° /9° 0 mm 5
Dec. 9 Partly cloudy
Partly cloudy
 20° /8° 0 mm 6
Dec. 10 Sunny
Sunny
 21° /10° 0 mm 6
Dec. 11 Overcast
Overcast
 19° /11° 0 mm 4
Dec. 12 Sunny
Sunny
 16° /11° 0 mm 4
Dec. 13 Sunny
Sunny
 17° /10° 0 mm 4
Dec. 14 Cloudy
Cloudy
 17° /11° 0 mm 4
Dec. 15 Sunny
Sunny
 19° /11° 0 mm 5
Dec. 16 Sunny
Sunny
 18° /10° 0 mm 5
Dec. 17 Partly cloudy
Partly cloudy
 17° /10° 0 mm 0.7
Dec. 18 Sunny
Sunny
 22° /11° 0 mm 0.7
Dec. 19 Partly cloudy
Partly cloudy
 18° /14° 0 mm 0.7
Dec. 20 Partly cloudy
Partly cloudy
 20° /15° 0 mm 0.7
Dec. 21 Sunny
Sunny
 21° /15° 0 mm 0
Dec. 22 Sunny
Sunny
 21° /16° 0 mm 5
Dec. 23 Partly cloudy
Partly cloudy
 19° /15° 0 mm 5
Dec. 24 Patchy rain possible
Patchy rain possible
 18° /15° 0.7 mm 4
Dec. 25 Patchy rain possible
Patchy rain possible
 17° /15° 3.1 mm 4
Dec. 26 Sunny
Sunny
 16° /13° 0 mm 4
Dec. 27 Sunny
Sunny
 16° /13° 0 mm 4
Dec. 28 Patchy rain possible
Patchy rain possible
 16° /13° 0.1 mm 3
Dec. 29 Partly cloudy
Partly cloudy
 16° /12° 0 mm 4
Dec. 30 Patchy rain possible
Patchy rain possible
 16° /14° 0.5 mm 3
Dec. 31 Light rain shower
Light rain shower
 15° /10° 1.6 mm 4
Next
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.
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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 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Oceanside during December?
In December, Oceanside can expect light to moderate rainfall, totaling 22.7 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
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 6 rainy days in December with a total of 22.7 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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Location coordinates 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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