Irvine Weather in September

September in Irvine averages 29°C (84°F) during the day and 18°C (64°F) at night. With only 5.3 mm (0.2 in) of rainfall expected on average, it's a largely dry month.

Rainfall in Irvine in September

Past climate data indicates that roughly a single day will see rain, totalling around 5.3 mm (0.2 in) for the month. If rain does fall, it tends to be a moderate shower rather than anything heavy.

Temperature in Irvine in September

Irvine in September has perfect weather. Days reach 29°C (84°F) and nights cool to 18°C (64°F). Overall, the month follows a fairly predictable daily temperature pattern. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. On average, it is the warmest month of the year.

Sunshine in Irvine in September

There are approximately 290 hours of sunshine this month, resulting in mostly clear days.

If you're planning additional trips, our weather planner can help you find destinations that match your weather preferences.

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• January
• February
• March
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• May
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• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Irvine's climate page.

Irvine Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 3%  

Precipitation 5.3 mm (0.2 in)  

Rainy days a single day  

Sunshine 290 hours *  

Percentage Sunshine *  

* Data from: Corona, the United States of America (31 KM, 19 Miles).

What to Wear in Irvine in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Irvine in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Irvine's climate page.

More climate data for Irvine

Temperature Rainfall Sunshine

See the full Irvine climate overview or explore weather in the United States of America.