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Weather in Irvine for September 2026

Your guide to Irvine weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Irvine at the beginning of September is 16.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Irvine in September is notably wet, with an average of 13 rainy days, and a total of 69.6 mm of precipitation.

    • More

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Average dry days
17
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/8°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
84 %
Avg humidity

Irvine Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
16°
2
Moderate or heavy rain shower
16°
3
Moderate rain at times
12°
4
Moderate or heavy rain shower
15°
5
Overcast
17°
6
Partly cloudy
19°
7
Partly cloudy
21°
8
Patchy rain possible
18°
9
Heavy rain at times
14°
10
Patchy rain possible
14°
11
Overcast
12°
12
Patchy rain possible
12°
13
Patchy rain possible
12°
14
Moderate rain at times
15°
15
Patchy rain possible
15°
16
Cloudy
15°
17
Partly cloudy
17°
18
Sunny
18°
19
Sunny
17°
20
Sunny
16°
21
Cloudy
15°
22
Cloudy
14°
23
Overcast
14°
24
Heavy rain at times
13°
25
Overcast
13°
26
Moderate rain at times
12°
27
Cloudy
11°
28
Patchy rain possible
12°
29
Overcast
12°
30
Light drizzle
13°

Temperatures trend during September in Irvine

See the weather trend as well as the moving average line

September weather in Irvine day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 16° /9° 4.9 mm 4
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /10° 6.6 mm 4
3 Sept. Moderate rain at times
Moderate rain at times
 12° /7° 11.3 mm 3
4 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /7° 4.6 mm 4
5 Sept. Overcast
Overcast
 17° /8° 0.4 mm 4
6 Sept. Partly cloudy
Partly cloudy
 19° /11° 0 mm 5
7 Sept. Partly cloudy
Partly cloudy
 21° /12° 3.9 mm 6
8 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 0.2 mm 5
9 Sept. Heavy rain at times
Heavy rain at times
 14° /8° 3.5 mm 4
10 Sept. Patchy rain possible
Patchy rain possible
 14° /8° 11.1 mm 4
11 Sept. Overcast
Overcast
 12° /6° 3.6 mm 3
12 Sept. Patchy rain possible
Patchy rain possible
 12° /6° 4 mm 3
13 Sept. Patchy rain possible
Patchy rain possible
 12° /4° 2.8 mm 3
14 Sept. Moderate rain at times
Moderate rain at times
 15° /8° 5.1 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 8.9 mm 4
16 Sept. Cloudy
Cloudy
 15° /7° 1.3 mm 4
17 Sept. Partly cloudy
Partly cloudy
 17° /9° 2.4 mm 5
18 Sept. Sunny
Sunny
 18° /10° 0.7 mm 5
19 Sept. Sunny
Sunny
 17° /8° 2.5 mm 5
20 Sept. Sunny
Sunny
 16° /7° 6.7 mm 4
21 Sept. Cloudy
Cloudy
 15° /6° 0.2 mm 4
22 Sept. Cloudy
Cloudy
 14° /5° 0.1 mm 4
23 Sept. Overcast
Overcast
 14° /5° 0.2 mm 3
24 Sept. Heavy rain at times
Heavy rain at times
 13° /5° 0.9 mm 3
25 Sept. Overcast
Overcast
 13° /4° 0.6 mm 4
26 Sept. Moderate rain at times
Moderate rain at times
 12° /5° 6.9 mm 4
27 Sept. Cloudy
Cloudy
 11° /6° 7.9 mm 3
28 Sept. Patchy rain possible
Patchy rain possible
 12° /4° 1.1 mm 3
29 Sept. Overcast
Overcast
 12° /5° 0.5 mm 3
30 Sept. Light drizzle
Light drizzle
 13° /8° 1.7 mm 4
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.
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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 13 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 ☀️

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Location coordinates 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.

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