The most comfortable time to visit Santa Ana is from mid March to mid July, and again from mid September to mid December. For sun, aim for mid July to early September; for walking, go from late October to early June.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
For sun, go from mid July to early September. It peaks in early August, at 68. Avoid December to March for this: it falls to 0, mostly because it is too cool. The clearest skies come in August, when the sky is typically 16% covered at midday (mostly clear).
The being outside season here runs from mid March to mid July, with a second spell from mid September to mid December. It peaks in late May, at 86. The weakest stretch is in early September, when it drops to 46, mostly because it is too hot.
For walking, go from late October to early June. It peaks in early December, at 89. Avoid late July to early September for this: it falls to 16, mostly because it is too warm.
The year, measured
The average temperature in Santa Ana over the whole year is 18°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 9°C. Santa Ana has no sharply defined rainy season: the chance of rain on a given day runs from 2% in July, the driest month, to 16% in January, the wettest. Winds in Santa Ana are highest in May, averaging 2.5 m/s (9 km/h), and lightest in December, at 1.5 m/s (5 km/h). The prevailing wind is from the SW. The clearest skies in Santa Ana come in November, when the sky is typically 25% covered; May is the cloudiest month, at 52%.
Month by month Santa Ana climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 18°C | 9°C | 15°C | 16% | 34% | 1.7 m/s | 55 | 2 | 87 |
| February | 18°C | 10°C | 15°C | 16% | 34% | 2.0 m/s | 56 | 4 | 82 |
| March | 19°C | 11°C | 15°C | 14% | 42% | 2.3 m/s | 59 | 4 | 84 |
| April | 21°C | 13°C | 18°C | 8% | 39% | 2.4 m/s | 76 | 11 | 80 |
| May | 21°C | 15°C | 19°C | 6% | 52% | 2.5 m/s | 84 | 11 | 79 |
| June | 25°C | 18°C | 23°C | 3% | 44% | 2.5 m/s | 80 | 33 | 55 |
| July | 28°C | 20°C | 27°C | 2% | 29% | 2.5 m/s | 59 | 60 | 25 |
| August | 29°C | 20°C | 28°C | 6% | 26% | 2.3 m/s | 51 | 68 | 17 |
| September | 28°C | 19°C | 27°C | 4% | 31% | 2.1 m/s | 62 | 53 | 29 |
| October | 26°C | 16°C | 24°C | 9% | 29% | 1.8 m/s | 77 | 39 | 48 |
| November | 22°C | 12°C | 19°C | 10% | 25% | 1.6 m/s | 82 | 14 | 75 |
| December | 18°C | 10°C | 16°C | 14% | 31% | 1.5 m/s | 64 | 2 | 88 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Santa Ana weather by season
Year round, Santa Ana has days of about 18°C at their warmest in January, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from 9°C to 20°C through the year, and the average temperature over the year is 18°C around the clock. Rain is most likely around January and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Santa Ana weather in winterDecember to February
Winter in Santa Ana has typical daily highs of about 18°C and lows of about 10°C, with a 15% chance of rain on a given day.
Santa Ana weather in springMarch to May
Spring in Santa Ana has typical daily highs of about 20°C and lows of about 13°C, with a 9% chance of rain on a given day.
Santa Ana weather in summerJune to August
Summer in Santa Ana has typical daily highs of about 27°C and lows of about 19°C, with a 3% chance of rain on a given day.
Santa Ana weather in autumnSeptember to November
Autumn in Santa Ana has typical daily highs of about 25°C and lows of about 15°C, with a 8% chance of rain on a given day.
When is the rainy season in Santa Ana?
Santa Ana has no sharply defined rainy season: the chance of rain on a given day runs from 2% in July, the driest month, to 16% in January, the wettest.
What time of year is Santa Ana windiest?
Winds in Santa Ana are highest in May, averaging 2.5 m/s (9 km/h), and lightest in December, at 1.5 m/s (5 km/h). The prevailing wind is from the SW.
What is the average temperature in Santa Ana year round?
The average temperature in Santa Ana over the whole year is 18°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 9°C.
Where to go instead in early September, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.