Sea Temperature in Oceanside in December

Complete information on the sea temperature range in the Pacific Ocean in Oceanside in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Oceanside. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Oceanside in December

57°F

MINIMUN

61°F

AVERAGE

64°F

MAXIMUM

Historical Data of Water Temperature in December in Oceanside

Water Temperature Chart for Pacific Ocean in Oceanside in December

Sea Temperature Table in Oceanside in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	59°C	64°C	61°C	62°C
Dec 2	59°C	63°C	61°C	61°C
Dec 3	59°C	61°C	59°C	60°C
Dec 4	61°C	61°C	61°C	61°C
Dec 5	61°C	63°C	61°C	62°C
Dec 6	59°C	61°C	61°C	61°C
Dec 7	59°C	63°C	61°C	61°C
Dec 8	59°C	59°C	63°C	60°C
Dec 9	59°C	59°C	63°C	60°C
Dec 10	57°C	63°C	61°C	61°C
Dec 11	59°C	63°C	59°C	60°C
Dec 12	59°C	63°C	59°C	61°C
Dec 13	57°C	61°C	61°C	60°C
Dec 14	57°C	61°C	59°C	60°C
Dec 15	57°C	61°C	57°C	59°C
Dec 16	59°C	61°C	59°C	60°C
Dec 17	57°C	63°C	59°C	60°C
Dec 18	57°C	61°C	59°C	60°C
Dec 19	59°C	63°C	59°C	60°C
Dec 20	59°C	61°C	59°C	60°C
Dec 21	59°C	63°C	57°C	60°C
Dec 22	57°C	61°C	59°C	59°C
Dec 23	57°C	63°C	57°C	60°C
Dec 24	57°C	63°C	59°C	60°C
Dec 25	57°C	63°C	59°C	60°C
Dec 26	57°C	63°C	59°C	60°C
Dec 27	57°C	63°C	59°C	60°C
Dec 28	59°C	63°C	59°C	60°C
Dec 29	59°C	63°C	59°C	60°C
Dec 30	57°C	63°C	57°C	59°C

Oceanside Climate and Swimming Opportunities in December

66°F

Average Day Air Temperature

45°F

Average Night Air Temperature

2 in

Precipitation Amount per Month

5 days

Number of Rainy Days

10 hrs

Daylight
per Day

7 hrs

Sunshine
per Day

6 mph

Average Wind Speed

65%

Average
humidity

Oceanside lies within the California in United States. The average daytime temperature in Oceanside in December is 66°F (19°C), while the nighttime average is 45°F (7°C). There are typically five rainy days during the month, with a total precipitation of 1.9 inches (48 mm). The daylight duration in December in Oceanside is 10 hours, with an average of 7 hours of sunshine per day. The average wind speed in December is 6 mph (9 km/h), and the humidity level is around 65%.

The water temperature in Oceanside in December ranges from 59°F to 61°F (15°C to 16°C). At the beginning of the month, the average temperature is around 61°F (16°C), shifting to 61°F (16°C) by mid-December and reaching 59°F (15°C) in the last ten days. Overall, the average sea temperature in Oceanside for December is 61°F (16°C). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Oceanside

What is the sea temperature in Oceanside in December?

The water temperature in the Pacific Ocean in Oceanside in December ranges from 59°F to 61°F (15°C to 16°C).

Is it possible to swim in the Pacific Ocean in Oceanside in December?

The average sea temperature in Oceanside in December is 61°F (16°C), and the air temperature is 66°F (19°C), so ideal conditions for a refreshing swim, though some may still find it a bit cool.