Oceanside in December
Find out everything about the water temperature in Oceanside in December. Average, minimum and maximum recorded temperatures as well as daily temperature in December for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in December
Minimum:
58.4 °F
Average:
61.5 °F
Maximum:
65.7 °F
Sea water temperature in Oceanside in December
In the city of Oceanside, the month of December is somewhat too cool for swimming. The minimum recorded temperature during this month was 58.4°F on December 15, 2024, with an average temperature being 61.5°F and a maximum temperature reaching 65.7°F on December 11, 2015.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Dec 1 | 62.5°F | 58.6°F | 62.5°F |
| Dec 2 | 62.3°F | 59.3°F | 62.3°F |
| Dec 3 | 62.5°F | 60.2°F | 62.2°F |
| Dec 4 | 62.4°F | 60.3°F | 62.2°F |
| Dec 5 | 62.4°F | 60.2°F | 62.2°F |
| Dec 6 | 62.2°F | 60.2°F | 63.0°F |
| Dec 7 | 62.1°F | 60.4°F | 63.0°F |
| Dec 8 | 62.2°F | 60.2°F | 63.5°F |
| Dec 9 | 62.0°F | 59.2°F | 62.9°F |
| Dec 10 | 62.1°F | 59.6°F | 62.5°F |
| Dec 11 | 62.0°F | 59.6°F | 62.2°F |
| Dec 12 | 62.0°F | 59.4°F | 62.3°F |
| Dec 13 | 62.0°F | 59.6°F | 62.2°F |
| Dec 14 | 62.0°F | 58.9°F | 62.6°F |
| Dec 15 | 61.8°F | 58.4°F | 62.6°F |
| Dec 16 | 61.6°F | 58.7°F | 62.6°F |
| Dec 17 | 61.5°F | 58.6°F | 62.5°F |
| Dec 18 | 61.3°F | 59.4°F | 62.2°F |
| Dec 19 | 61.3°F | 59.8°F | 62.0°F |
| Dec 20 | 61.1°F | 60.3°F | 61.8°F |
| Dec 21 | 61.1°F | 60.4°F | 62.5°F |
| Dec 22 | 61.1°F | 60.3°F | 62.7°F |
| Dec 23 | 61.0°F | 60.1°F | 62.3°F |
| Dec 24 | 60.9°F | 59.3°F | 62.3°F |
| Dec 25 | 60.9°F | 59.8°F | 62.7°F |
| Dec 26 | 60.9°F | 59.8°F | 62.9°F |
| Dec 27 | 60.6°F | 59.7°F | 62.8°F |
| Dec 28 | 60.7°F | 59.8°F | 63.0°F |
| Dec 29 | 60.6°F | 60.1°F | 62.7°F |
| Dec 30 | 60.4°F | 59.8°F | 62.7°F |
| Dec 31 | 60.4°F | 60.0°F | 62.4°F |
In an average year, Oceanside offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Oceanside was recorded on August 11, 2018, reaching a 79.1°F. While the coldest temperature occurred on April 7, 2023, dipping to 55.0°F. The average readings by season are 60.3°F in Winter, 61.7°F in Spring, 69.8°F in Summer, and 68.0°F in Autumn.
December's average temperature is a slight drop from November's average of 64.3°F. In January, the temperature is expected to decrease further, potentially averaging around 59.9°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Laguna Beach |
57.8°F
|
33mi |
| San Diego |
55.9°F
|
35mi |
| Tijuana |
55.8°F
|
53mi |
| Long Beach |
57.0°F
|
61mi |
* current water temperature in this city
** straight line distance from Oceanside