Oceanside, CA weather in January
Oceanside is cool in January, with some rain: highs average 63°F and nights drop to about 47°F. Expect about 6 wet days.
- Normal high
- 63°F
- Normal low
- 47°F
- Wet days
- 6
- 2.2 in total
- Muggy days
- 0
- dew point 65°F+
How January changes from start to finish
| January 1 | January 31 | |
|---|---|---|
| Normal high | 63°F | 62°F |
| Normal low | 47°F | 47°F |
| Chance of a wet day | 19% | 19% |
| Sunrise / sunset | 6:53 am / 4:53 pm | 6:45 am / 5:20 pm |
| Daylight | 10.0 h | 10.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical January day
- 6 am43°Fdew point 37°F
- 9 am53°Fdew point 41°F
- Noon67°Fdew point 41°F
- 3 pm66°Fdew point 42°F
- 6 pm57°Fdew point 44°F
- 9 pm50°Fdew point 42°F
NOAA hourly normals (local standard time) from Camp Pendleton MCAS (7 mi away); average wind 3 mph; clear or few clouds in 58% of daytime hours, mostly cloudy or overcast in 35%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph1 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow6 of 31
- Notable rainat least 0.10 in5 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per January, counted from daily records for each year 1991-2020.
Rain in January
Normal precipitation is 2.2 in; a dry January brings about 0.5 in and a wet one about 2.9 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How January varies from year to year
- Warmest January, 1991-20202003: average high 67°F
- Coolest January2002: average high 60°F
- Wettest January1993: 8.8 in
- Driest January2014: 0.01 in
- Highest reading87°F (January 28, 2018)
- Lowest reading30°F (January 15, 2007)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
January compared with December and February
| December | January | February | |
|---|---|---|---|
| Normal high | 63°F | 63°F | 62°F |
| Normal low | 47°F | 47°F | 48°F |
| Wet days | 5 | 6 | 6 |
| Comfortable days | 10 | 9 | 6 |
| Daylight | 10.0 h | 10.2 h | 11.0 h |
Highs change by 0°F from December and -1°F into February.
Nearby alternatives in January
- Warmer: Escondido, CA18 mi · high 69°F · 6 wet days
- Drier: Yuma, AZ163 mi · high 70°F · 3 wet days
- Cooler: Big Bear Lake, CA77 mi · high 46°F · 7 wet days
How Oceanside ranks in January
- Normal high83rd warmest of 378 cities; 29th of 60 in California
- Wet days71st driest of 378
- Comfortable days84th most of 339
Frost in January
The last spring frost typically comes around Jan 23; in 1 year in 10 it comes after Feb 22. All frost dates for Oceanside.
Heating and cooling
January has 313 heating degree days and 2 cooling degree days (base 65°F), 15% of the year's total heating and cooling demand.
Questions
How cold is Oceanside in January?
The normal high is 63°F and the normal low is 47°F. From 1991 to 2020 the coldest January reading was 30°F (most recently on January 15, 2007).
Does it rain a lot in Oceanside in January?
About 6 days in January have at least 0.01 in of precipitation, and the normal total is 2.2 in. The wettest January in 1991-2020 was in 1993 (8.8 in); the driest was in 2014 (0.01 in).
Is January a good time to visit Oceanside?
January ranks 11th of 12 months on our comfort score for Oceanside (56 out of 100). It has about 9 comfortable days. The best months are June and October.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Oceanside Marina (USC00046377), 1.3 mi NW of the city center, 10 ft (60 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Oceanside Muni Airport (USW00053121), 2.4 mi NE of the city center, 28 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Camp Pendleton MCAS (USW00003154), 7.4 mi NNE of the city center, 75 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: March AFB (USW00023119), 49 mi N of the city center, 1,516 ft (1,446 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Marine Corps Air Station (722926-03154), 7.6 mi N of the city center, 70 ft . Hourly observations, 1991-2020.