Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
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 excellent 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.
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).
Irvine Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Irvine - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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.
-
Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Irvine 3-Day Forecast
More climate data for Irvine
See the full Irvine climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.