Monthly climate guide
Santa Ana weather in January
January in Santa Ana is typically mild, with average daytime highs around 18°C (64°F) and night-time lows near 13°C (56°F). The month usually brings about 67 mm of rain (some rain) and is a mix of sun and cloud. Daytime highs are about the same as December and about the same as February.
What stands out in January
- Seasonally, January counts as mid-winter in Santa Ana.
- It's wetter than a typical month in Santa Ana — roughly 170% more rain than average.
- January is among Santa Ana's three coolest months.
- Days and nights are close, only about 4°C apart.
It's usually the wettest month of the year.
Avg high
18°C
64°F
Avg low
13°C
56°F
Rainfall
67 mm
some rain
Humidity
69%
relative
Sky
41%
cloud · a mix of sun and cloud
Santa Ana weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 18°C / 64°F | 13°C / 56°F | 67 mm | 69% | 41% |
| February | 17°C / 63°F | 13°C / 55°F | 50 mm | 71% | 37% |
| March | 17°C / 63°F | 13°C / 56°F | 49 mm | 76% | 44% |
| April | 18°C / 65°F | 14°C / 57°F | 17 mm | 76% | 40% |
| May | 19°C / 65°F | 15°C / 58°F | 10 mm | 78% | 44% |
| June | 20°C / 68°F | 16°C / 60°F | 1 mm | 78% | 41% |
| July | 22°C / 72°F | 18°C / 65°F | 2 mm | 76% | 34% |
| August | 23°C / 74°F | 19°C / 66°F | 1 mm | 75% | 28% |
| September | 24°C / 75°F | 19°C / 67°F | 4 mm | 74% | 27% |
| October | 23°C / 73°F | 18°C / 65°F | 8 mm | 71% | 28% |
| November | 20°C / 69°F | 16°C / 61°F | 30 mm | 67% | 34% |
| December | 18°C / 64°F | 14°C / 56°F | 59 mm | 66% | 40% |
What to pack for January
- A warm sweater or fleece for layering
- A mid-weight jacket
- A small travel umbrella, just in case
Is January a good time to visit Santa Ana?
Compare the months in the chart above to find your ideal window.
Best time to visit Santa Ana →Other United States cities in January
Cite or embed this data
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Santa Ana weather in January. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/santa-ana-usa/january
<a href="https://weathercompare.eu/weather/usa/santa-ana-usa/january">Santa Ana weather in January</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/santa-ana-usa" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Santa Ana weather in January"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/santa-ana-usa/january">Santa Ana weather in January</a> – WeatherCompare</p>
Santa Ana in January: quick answers
Is January a good time to visit Santa Ana?
January is a reasonable time for Santa Ana: highs around 18°C and about 67 mm of rain, though not one of the three best months.
How warm is Santa Ana in January?
Average highs are about 18°C (64°F) and average lows about 13°C (56°F), based on 10 years of daily data.
Does it rain a lot in Santa Ana in January?
Santa Ana typically gets around 67 mm of rain in January — some rain. It's usually the wettest month of the year.
Figures are long-term averages for the area around Santa Ana (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.