Irvine
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Irvine, CA

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A unique sunrise sky view over the neon-lit city of Irvine in California, with highway lights, and the distant hill ranges and skyscape
A unique sunrise sky view over the neon-lit city of Irvine in California, with highway lights, and the distant hill ranges and skyscape

Weather in January

January, like December, in Irvine, California, is another comfortable winter month, with average temperature ranging between max 64.9°F (18.3°C) and min 51.8°F (11°C). In Irvine, the average high-temperature is essentially the same as in December - a still enjoyable 64.9°F (18.3°C). Weather in January »

Weather in February

February, the last month of the winter, in Irvine, is also an enjoyable month, with average temperature ranging between max 64°F (17.8°C) and min 50.5°F (10.3°C). In February, the average high-temperature is essentially the same as in January - a still comfortable 64°F (17.8°C). Weather in February »

Weather in March

March, the first month of the spring, in Irvine, is also an enjoyable month, with average temperature varying between 66°F (18.9°C) and 52°F (11.1°C). In March, the average high-temperature is almost the same as in February - a still comfortable 66°F (18.9°C). Weather in March »

Weather in April

April in Irvine, California, is an agreeable spring month, with average temperature fluctuating between 68.4°F (20.2°C) and 54°F (12.2°C). In Irvine, California, the average high-temperature is essentially the same as in March - an agreeable 68.4°F (20.2°C). Weather in April »

Weather in May

The last month of the spring, May, is also an agreeable month in Irvine, California, with average temperature fluctuating between 69.8°F (21°C) and 56.3°F (13.5°C). In May, the average high-temperature is almost the same as in April - a still pleasant 69.8°F (21°C). Weather in May »

Weather in June

June, the first month of the summer, in Irvine, is a moderately hot month, with average temperature ranging between min 58.5°F (14.7°C) and max 73.6°F (23.1°C). In June, the average high-temperature is relatively the same as in May - a warm 73.6°F (23.1°C). Weather in June »

Weather in July

July, like June, in Irvine, California, is a moderately hot summer month, with average temperature ranging between max 77.9°F (25.5°C) and min 63.3°F (17.4°C). In Irvine, the average high-temperature is practically the same as in June - a still moderately hot 77.9°F (25.5°C). Weather in July »

Weather in August

August, the last month of the summer, in Irvine, is another warm month, with average temperature fluctuating between 79.9°F (26.6°C) and 64.9°F (18.3°C). With an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 64.9°F (18.3°C), August is the warmest month. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Irvine, California, with average temperature ranging between max 79°F (26.1°C) and min 64.4°F (18°C). In September, the average high-temperature is almost the same as in August - a still moderately hot 79°F (26.1°C). Weather in September »

Weather in October

October, like September, in Irvine, California, is another warm autumn month, with average temperature ranging between max 74.7°F (23.7°C) and min 61.5°F (16.4°C). In October, the average high-temperature is practically the same as in September - a still warm 74.7°F (23.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Irvine, California, with temperature in the range of an average high of 69.6°F (20.9°C) and an average low of 56.5°F (13.6°C). In November, the average high-temperature is essentially the same as in October - an agreeable 69.6°F (20.9°C). Weather in November »

Weather in December

The first month of the winter, December, is also an enjoyable month in Irvine, California, with average temperature ranging between min 51.8°F (11°C) and max 63°F (17.2°C). With an average high-temperature of 63°F (17.2°C) and an average low-temperature of 51.8°F (11°C), December is the coldest month. Weather in December »

FAQ

How many days does it rain in Irvine?

In Irvine, during the entire year, the rain falls for 63.7 days and collects up to 7.91" (201mm) of precipitation.

What are the months with the lowest UV index in Irvine?

Months with the lowest UV index in Irvine, California, are January through March, November and December, with an average maximum UV index of 4.

What is the most humid month in Irvine?

June is the most humid month, with an average relative humidity of 71%.

What is the driest month in Irvine?

June is the month with the least rainfall. Rain falls for 2.2 days and accumulates 0.08" (2mm) of precipitation.

When are the longest days in Irvine?

With an average of 14.4h of daylight, June has the longest days of the year in Irvine.

When is the highest UV index in Irvine?

Months with the highest UV index in Irvine are June through September, with an average maximum UV index of 6.

What is the month with the most sunshine in Irvine?

Months with the most sunshine are July and August, with an average of 12h of sunshine.

What is the warmest month in Irvine?

August is the warmest month, with an average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 64.9°F (18.3°C).

What is the least humid month in Irvine?

The least humid month in Irvine is November, with an average relative humidity of 56%.

What is the coldest month in Irvine?

The coldest month is December, with an average high-temperature of 63°F (17.2°C) and an average low-temperature of 51.8°F (11°C).

What is the wettest month in Irvine?

The month with the most rainfall in Irvine, California, is December when the rain falls for 6.9 days and typically aggregates up to 1.54" (39mm) of precipitation.

What is the month with the shortest days in Irvine?

The month with the shortest days in Irvine, California, is December, with an average of 9.9h of daylight.

What is the month with the least sunshine in Irvine?

December has the least sunshine of the year, with an average of 6.6h of sunshine.

Average temperature
Irvine, CA

Average temperature - Irvine, CA

The warmest month (with the highest average high temperature) is August (79.9°F).
The month with the lowest average high temperature is December (63°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 (50.5°F).

Average humidity
Irvine, CA

Average humidity - Irvine, CA

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).

Average rainfall
Irvine, CA

Average rainfall - Irvine, CA

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

Average rainfall days
Irvine, CA

Average rainfall days - Irvine, CA

The month with the highest number of rainy days is March (7.9 days).
The month with the lowest number of rainy days is June (2.2 days).

Average daylight / Average sunshine
Irvine, CA

Average daylight / Average sunshine - Irvine, CA

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

Months with most sunshine are July and August (Average sunshine: 12h).
The month with least sunshine is December (Average sunshine: 6.6h).

Average UV index
Irvine, CA

Average UV index - Irvine, CA

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