Climate and monthly weather forecast
Santa Ana, CA

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Night lights of the street in Santa Ana, California, with palm trees lining the street
Night lights of the street in Santa Ana, California, with palm trees lining the street

The climate of Santa Ana

The city of Santa Ana, situated in California, USA, exemplifies the Mediterranean hot summer climate, also known as Csa under the Köppen climate classification. Throughout the year, a range of weather conditions transpire, influenced significantly by this prevailing climate classification.

Temperature values in the region vary, with the yearly highs reaching a peak of 83.1°F (28.4°C) in August, followed closely by 81.7°F (27.6°C) in September. Contrastingly, the coldest temperatures are registered in the winter months, with 50.2°F (10.1°C) reported as a low in February. Examining the yearly humidity data, relative humidity percentage gravitates from a lower limit of 52% in November to a peak 66% in June.

Rainfall occurrence is another critical aspect of Santa Ana's climate. The maximum rainfall of 1.54" (39mm) is registered in December, while the driest month is evidenced in June, with rainfall measuring just 0.08" (2mm) on average. Daylight lasts the longest, 14.4 hours, in June, whereas the shortest days transpire in December, with a duration of 9.9 hours. As expected, sunshine hours mirror the daylight trend, reaching up to 12 hours in the months of July and August.

The wind parameters display a subtle deviation throughout the year. Wind speeds range from 4.6mph (7.4km/h) in September to 5.9mph (9.5km/h) in April. Peak gustiness in the wind is experienced in December, with a gust speed reaching 8.1mph (13km/h).

The best time to visit Santa Ana

Planning a visit to Santa Ana would bring the most pleasure between the months of June and September. During this period, the city witnesses its longest hours of daylight and a reduced rainfall frequency. Temperatures during these months range from 76.1°F (24.5°C) to 83.1°F (28.4°C), providing warm and comforting climate conditions. Moreover, around 14 hours of daily daylight ensures that tourist activities can be pursued without hindrance.

The worst time to visit Santa Ana

Rescheduling a potential trip is advisable for the winter months, particularly December and January. Despite attaining the peak in rainfall frequencies and quantities, these months witness the lowest daylight hours. With average temperatures also striking lower readings of about 63.7°F (17.6°C) in December and 65.1°F (18.4°C) in January, comfort is comparably diminished.

Spring weather in Santa Ana

The spring season, lasting from March to May, witnesses a steady temperature increase from 67.5°F (19.7°C) to 72°F (22.2°C). The frequency of rainfall days diminishes gradually from 7.1 days in March to 4.8 days in May, making Santa Ana a desirable springtime destination. The lengthening of daylight hours from 12 to 13.9 hours enhances the allure of outdoor pursuits in Santa Ana during this period.

Summer weather in Santa Ana

Throughout the summer months, Santa Ana offers a warm and welcoming climate for visitors and residents alike. With average highs oscillating from 76.1°F (24.5°C) in June to 83.1°F (28.4°C) in August, the weather is aptly warm. Correspond to this, the occurrence of rainfall days plummets to nearly negligible proportions, averaging 1.7 days in June to a modest 2.4 days in August. Furthermore, the duration of daylight hits its peak during the summer months, touched at a maximum of 14.4 hours.

Autumn weather in Santa Ana

A transition in weather conditions is evidenced during Autumn. The temperature gradually moves between 81.7°F (27.6°C) in September to 70.7°F (21.5°C) in November. Rainfall occurs slightly more frequently than in the summer, with September witnessing 3.7 rainfall days, which increases to 4.1 days by November. Daylight hours reduce as autumn progresses, ranging from 12.4 hours in September down to 10.4 hours in November.

Winter weather in Santa Ana

The winter months usher in the lowest registered temperatures of the year in Santa Ana, seeing the mercury drop from 70.7°F (21.5°C) in November to 63.7°F (17.6°C) in December. The increase in rainfall frequency is significant, with 6.3 days of rainfall reported in December. Shorter daylight hours, which dwindle down to 9.9 hours in December, is another characteristic of Santa Ana winters. Despite the drop in temperature, Santa Ana's winter temperatures remain comparatively moderate to those seen in colder climate zones. Wind speed maintains its average value around 5mph (8km/h), with notable gusts peaking at 8.1mph (13km/h) in December.

Weather in January

Weather in Santa Ana, California, in January, experiences mild temperatures with the high and low temperature averaging between 65.8°F (18.8°C) and 51.3°F (10.7°C). This makes the weather quite pleasant compared to the colder months of the year. Weather in January »

Weather in February

As one moves from January to February in Santa Ana, slight changes in weather conditions are noticeable. The month is characterized by a gradual increase in temperature and humidity, signaling the slow arrival of the spring season. Weather in February »

Weather in March

March sees weather conditions continuing to change, with a marginal rise in temperatures and humidity levels. Despite the spring season being well underway by this time, rainfall is surprisingly low, averaging at 0.83" (21mm) for the month. Weather in March »

Weather in April

April in Santa Ana is characterized by a noticeable shift in the weather pattern, with temperature and daylight hours increasing, indicating the onset of summer. The city experiences a dip in rainfall at 0.51" (13mm). Additionally, the cloud coverage decreases to 19%, allowing residents and visitors to enjoy ample sunshine and clear skies. Weather in April »

Weather in May

May ushers in a more definitive summer weather pattern in Santa Ana, with temperatures and humidity levels on the rise. Despite the increasing temperatures, rainfall decreases even further to 0.24" (6mm), marking the driest period of the year. Weather in May »

Weather in June

June in Santa Ana is characterized by peak summer conditions. It is one of the sunniest months, with the UV index peaking at 6. The heats up from May, but the rainfall remains minimal at an average of 0.08" (2mm). Notably, the wind speed drops to 5.3mph (8.5km/h), leading to calmer days. Weather in June »

Weather in July

July continues the summer trend in Santa Ana, with temperatures further increasing and hitting a yearly average high of 81.1°F (27.3°C). Rainfall slightly increases, registering 0.35" (9mm). The wind speed drops marginally to 5mph (8km/h), and the daylight hours slightly decrease to 14.1. Weather in July »

Weather in August

August in Santa Ana is typically the warmest month of the year, with the temperature reaching a yearly peak of 83.1°F (28.4°C). Despite the increase in heat, rainfall remains low at 0.24" (6mm). The city sees a decrease in wind speed further to 4.8mph (7.7km/h). Weather in August »

Weather in September

September brings a slight relief from the peak summer heat in Santa Ana, with temperatures subtly decreasing. Despite this, the city continues to enjoy high quantities of sunshine and clear skies, with cloud coverage standing at just 9%. Weather in September »

Weather in October

October in Santa Ana sees a definite arrival of the autumn season, characterized by cooler temperatures and a slight increase in rainfall to 0.31" (8mm). The reduced daylight hours reflect the changing season, but this does not stop the residents from enjoying outdoor activities, thanks to the warm climate. Weather in October »

Weather in November

The month of November signals the onset of winter in Santa Ana. The city experiences a notable drop in temperature, but it remains comfortable for outdoor activities. The rainfall increases to 0.67" (17mm), preparing the environment for the approaching winter. Weather in November »

Weather in December

Santa Ana, California, in December experiences winter conditions, with temperatures dipping down to 63.7°F (17.6°C) on average. The month sees the highest rainfall of the year, totaling 1.54" (39mm), providing a much-needed hydration to the region. Weather in December »
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Frequently asked questions

How much does it rain in Santa Ana?

In Santa Ana, during the entire year, the rain falls for 55 days and collects up to 7.4" (188mm) of precipitation.

What is the month with the lowest UV index in Santa Ana?

The months with the lowest UV index in Santa Ana, California, are January, February, November and December, with an average maximum UV index of 4.

When is Daylight Saving Time (DST) in Santa Ana?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

What is the most humid month in Santa Ana?

With an average relative humidity of 66%, June is the most humid month in Santa Ana, California.

What is the driest month in Santa Ana?

The month with the least rainfall in Santa Ana, California, is June, when the rain falls for 1.7 days and typically collects 0.08" (2mm) of precipitation.

When are the longest days in Santa Ana?

June has the longest days of the year in Santa Ana, California, with an average of 14h and 24min of daylight.

What is the month with the highest UV index in Santa Ana?

The months with the highest UV index are June through September, with an average maximum UV index of 6.

What is the month with the most sunshine in Santa Ana?

July and August, with an average of 12h of sunshine, are months with the most sunshine in Santa Ana.

What is the hottest time of year in Santa Ana?

Santa Ana's warmest month, August, registers temperatures that range from a high of 83.1°F (28.4°C) to a low of 64.9°F (18.3°C).

What is the least humid month in Santa Ana?

The least humid month in Santa Ana, California, is November, with an average relative humidity of 52%.

What is the coldest month in Santa Ana?

December stands out as Santa Ana's coldest month, with an average high-temperature of 63.7°F (17.6°C) and a low-temperature of 50.7°F (10.4°C).

What is the wettest month in Santa Ana?

December is the month with the most rainfall. Rain falls for 6.3 days and accumulates 1.54" (39mm) of precipitation.

What is the month with the shortest days in Santa Ana?

With an average of 10h and 0min of daylight, December has the shortest days of the year in Santa Ana, California.

What is the month with the least sunshine in Santa Ana?

December has the least sunshine of the year, with an average of 6.7h of sunshine.

Average temperature
Santa Ana, CA

Average temperature - Santa Ana, CA

The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (63.7°F).

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).

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Average pressure
Santa Ana, CA

Average pressure - Santa Ana, CA

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed
Santa Ana, CA

Average wind speed - Santa Ana, CA

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average rainfall
Santa Ana, CA

Average rainfall - Santa Ana, CA

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days
Santa Ana, CA

Average rainfall days - Santa Ana, CA

The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.7 days).

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Average daylight / Average sunshine
Santa Ana, CA

Average daylight / Average sunshine - Santa Ana, CA

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days
Santa Ana, CA

Average sunshine days - Santa Ana, CA

The month with the most sunshine days is January (25 days).
The month with the least sunshine days is February (20.8 days).

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Average UV index
Santa Ana, CA

Average UV index - Santa Ana, CA

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average visibility
Santa Ana, CA

Average visibility - Santa Ana, CA

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Santa Ana, California, USA

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