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United States weather

Weather in San Diego, California for September 2027

Your guide to San Diego weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in San Diego at the beginning of September is 26.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.3 °C by the end of September.

    • Rain 🌧️

  • Precipitation in San Diego during September is a rare event, with an average of fewer than 2 rainy days.

    • More

  • Is September a good time to visit San Diego? check out the best time to travel to San Diego page.

  • ✨ Is September a good time to visit San Diego? – Ask the AI Weatherman

Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/19°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
74 %
Avg humidity

San Diego Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
26°
2
Sunny
26°
3
Sunny
26°
4
Sunny
26°
5
Sunny
27°
6
Overcast
28°
7
Partly cloudy
29°
8
Partly cloudy
31°
9
Partly cloudy
28°
10
Overcast
27°
11
Cloudy
26°
12
Overcast
23°
13
Cloudy
23°
14
Cloudy
23°
15
Overcast
23°
16
Overcast
23°
17
Patchy rain possible
22°
18
Overcast
23°
19
Cloudy
23°
20
Overcast
22°
21
Overcast
21°
22
Cloudy
23°
23
Cloudy
24°
24
Mist
23°
25
Mist
23°
26
Overcast
22°
27
Overcast
22°
28
Cloudy
22°
29
Cloudy
22°
30
Patchy rain possible
22°

Temperatures trend during September in San Diego

See the weather trend as well as the moving average line

September weather in San Diego day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Cloudy
Cloudy
 26° /19° 0 mm 7
Sept. 2 Sunny
Sunny
 26° /20° 0 mm 7
Sept. 3 Sunny
Sunny
 26° /19° 0 mm 8
Sept. 4 Sunny
Sunny
 26° /19° 0 mm 7
Sept. 5 Sunny
Sunny
 27° /19° 0 mm 7
Sept. 6 Overcast
Overcast
 28° /21° 0.1 mm 5
Sept. 7 Partly cloudy
Partly cloudy
 29° /21° 0 mm 6
Sept. 8 Partly cloudy
Partly cloudy
 31° /22° 0 mm 8
Sept. 9 Partly cloudy
Partly cloudy
 28° /22° 0.1 mm 7
Sept. 10 Overcast
Overcast
 27° /21° 0 mm 7
Sept. 11 Cloudy
Cloudy
 26° /20° 0 mm 7
Sept. 12 Overcast
Overcast
 23° /19° 0 mm 5
Sept. 13 Cloudy
Cloudy
 23° /19° 0 mm 6
Sept. 14 Cloudy
Cloudy
 23° /18° 0 mm 6
Sept. 15 Overcast
Overcast
 23° /18° 0 mm 6
Sept. 16 Overcast
Overcast
 23° /19° 0.1 mm 7
Sept. 17 Patchy rain possible
Patchy rain possible
 22° /18° 1.9 mm 6
Sept. 18 Overcast
Overcast
 23° /19° 0 mm 7
Sept. 19 Cloudy
Cloudy
 23° /18° 0 mm 6
Sept. 20 Overcast
Overcast
 22° /18° 0 mm 4
Sept. 21 Overcast
Overcast
 21° /17° 0.4 mm 5
Sept. 22 Cloudy
Cloudy
 23° /18° 0.1 mm 6
Sept. 23 Cloudy
Cloudy
 24° /19° 0 mm 6
Sept. 24 Mist
Mist
 23° /18° 0 mm 6
Sept. 25 Mist
Mist
 23° /18° 0 mm 6
Sept. 26 Overcast
Overcast
 22° /17° 0 mm 5
Sept. 27 Overcast
Overcast
 22° /18° 0 mm 4
Sept. 28 Cloudy
Cloudy
 22° /17° 0.3 mm 6
Sept. 29 Cloudy
Cloudy
 22° /17° 0 mm 6
Sept. 30 Patchy rain possible
Patchy rain possible
 22° /17° 1.2 mm 5
Next
Important Notice
Our weather forecast for San Diego 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 San Diego forecast closer to your planned date for the most up-to-date weather information.
Change Month
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San Diego in September - FAQ

What are the expected maximum and minimum temperatures in San Diego during September?
During September, expect a variety of temperatures with highs around 24° and lows near 19°, suitable for diverse activities and preferences.

How much rainfall should be expected in San Diego during September?
Rainfall in San Diego during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.

What are the typical wind conditions in San Diego during September?
The average wind speed in San Diego during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in San Diego

Explore the daily rainfall trends and prepare for San Diegos September weather 💧
Typically, San Diego has 1 rainy days in September with a total of 4.2 mm of rainfall.

UV exposure in San Diego during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is San Diego?

Get accurate weather forecasts for San Diego, located at latitude 32.716 and longitude -117.165. Stay updated with localized weather information tailored for San Diego.

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