Irvine
September
Weather in Irvine for September 2025
Your guide to Irvine weather in September - trends and predictions
In general, the average temperature in Irvine at the beginning of September is 17.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.9 °C by the end of September.
The climate of Irvine in September is notably wet, with an average of 15 rainy days, and a total of 69.6 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
15
Dry days
15
Rainy days
0
Snow days
15°/8°
Temperatures
20 km/h
Avg max wind
84 %
Avg humidity
Irvine Weather September
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  16° | 3 13° | 4 14° | 5 18° | 6  21° | 7 22° |
| 8  21° | 9  13° | 10 12° | 11 11° | 12 11° | 13 11° | 14 16° |
| 15 15° | 16  15° | 17 18° | 18  20° | 19 19° | 20 19° | 21 18° |
| 22 16° | 23 14° | 24 12° | 25 11° | 26 9° | 27 10° | 28 11° |
| 29 12° | 30  11° |
You can click on date
Access Irvine weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Irvine
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Overcast | 17° /8° | 1 mm | 4 | |
| 2 Sept. | Moderate or heavy rain shower | 16° /12° | 12.9 mm | 4 | |
| 3 Sept. | Moderate rain at times | 13° /6° | 1.4 mm | 3 | |
| 4 Sept. | Moderate or heavy rain shower | 14° /6° | 7 mm | 3 | |
| 5 Sept. | Overcast | 18° /9° | 0 mm | 4 | |
| 6 Sept. | Partly cloudy | 21° /13° | 0 mm | 6 | |
| 7 Sept. | Partly cloudy | 22° /12° | 0 mm | 6 | |
| 8 Sept. | Patchy rain possible | 21° /10° | 0.1 mm | 5 | |
| 9 Sept. | Heavy rain at times | 13° /9° | 6.9 mm | 3 | |
| 10 Sept. | Patchy rain possible | 12° /7° | 11.1 mm | 3 | |
| 11 Sept. | Overcast | 11° /5° | 0.1 mm | 3 | |
| 12 Sept. | Patchy rain possible | 11° /5° | 0.1 mm | 3 | |
| 13 Sept. | Patchy rain possible | 11° /3° | 0.5 mm | 3 | |
| 14 Sept. | Moderate rain at times | 16° /10° | 5.2 mm | 4 | |
| 15 Sept. | Patchy rain possible | 15° /8° | 1.7 mm | 4 | |
| 16 Sept. | Cloudy | 15° /6° | 0 mm | 4 | |
| 17 Sept. | Partly cloudy | 18° /10° | 0 mm | 5 | |
| 18 Sept. | Sunny | 20° /10° | 0 mm | 6 | |
| 19 Sept. | Sunny | 19° /8° | 0 mm | 5 | |
| 20 Sept. | Sunny | 19° /8° | 0 mm | 5 | |
| 21 Sept. | Cloudy | 18° /10° | 0 mm | 4 | |
| 22 Sept. | Cloudy | 16° /9° | 0 mm | 4 | |
| 23 Sept. | Overcast | 14° /8° | 0.4 mm | 3 | |
| 24 Sept. | Heavy rain at times | 12° /6° | 1.8 mm | 3 | |
| 25 Sept. | Overcast | 11° /4° | 1.3 mm | 3 | |
| 26 Sept. | Moderate rain at times | 9° /6° | 13.8 mm | 2 | |
| 27 Sept. | Cloudy | 10° /4° | 0 mm | 3 | |
| 28 Sept. | Patchy rain possible | 11° /3° | 1.6 mm | 3 | |
| 29 Sept. | Overcast | 12° /6° | 0.1 mm | 3 | |
| 30 Sept. | Light drizzle | 11° /8° | 2.7 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Irvine in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Irvine forecast closer to your planned date for the most up-to-date weather information.
Irvine in September - FAQ
What are the expected maximum and minimum temperatures in Irvine during September?
During September, expect a variety of temperatures with highs around 15° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Irvine during September?
Moderate rainfall is anticipated in Irvine during September, with a total of 69.6 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Irvine during September?
The average wind speed in Irvine during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Irvine
Explore the daily rainfall trends and prepare for Irvines September weather 💧
UV exposure in Irvine during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Irvine weather pages
You are here
Where is Irvine?Get accurate weather forecasts for Irvine, located at latitude 55.619 and longitude -4.655. Stay updated with localized weather information tailored for Irvine.
Found a mistake?
We appreciate your attention to details. Tell us here.