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Weather in Oceanside for September 2025

Your guide to Oceanside weather in September - trends and predictions
  • In general, the average temperature in Oceanside at the beginning of September is 26.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.3 °F by the end of September.

  • With an average of 2 rainy days, Oceanside experiences minimal rainfall in September, ensuring that most days remain pleasantly dry.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
28
Dry days
Average rainy days
2
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/17°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Oceanside in September average weather

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Temperatures trend during September in Oceanside

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
Sept. 1 Partly cloudy
Partly cloudy
25° /18° 0 mm 7
Sept. 2 Overcast
Overcast
25° /19° 0 mm 6
Sept. 3 Patchy rain possible
Patchy rain possible
25° /18° 0.1 mm 6
Sept. 4 Partly cloudy
Partly cloudy
25° /18° 0 mm 7
Sept. 5 Mist
Mist
27° /19° 0 mm 7
Sept. 6 Overcast
Overcast
27° /19° 0 mm 7
Sept. 7 Partly cloudy
Partly cloudy
29° /19° 0 mm 7
Sept. 8 Partly cloudy
Partly cloudy
30° /22° 0.2 mm 7
Sept. 9 Partly cloudy
Partly cloudy
30° /20° 0 mm 8
Sept. 10 Overcast
Overcast
27° /19° 0 mm 7
Sept. 11 Cloudy
Cloudy
25° /18° 0 mm 6
Sept. 12 Mist
Mist
24° /17° 0 mm 6
Sept. 13 Cloudy
Cloudy
22° /16° 0 mm 5
Sept. 14 Cloudy
Cloudy
22° /16° 0 mm 6
Sept. 15 Overcast
Overcast
22° /16° 0 mm 6
Sept. 16 Mist
Mist
21° /16° 0.3 mm 5
Sept. 17 Overcast
Overcast
20° /17° 0 mm 5
Sept. 18 Mist
Mist
21° /16° 0 mm 5
Sept. 19 Mist
Mist
20° /16° 0 mm 5
Sept. 20 Patchy rain possible
Patchy rain possible
20° /15° 0.1 mm 5
Sept. 21 Patchy rain possible
Patchy rain possible
20° /16° 0.2 mm 5
Sept. 22 Overcast
Overcast
22° /16° 0 mm 5
Sept. 23 Overcast
Overcast
22° /16° 0 mm 5
Sept. 24 Cloudy
Cloudy
22° /16° 0 mm 5
Sept. 25 Partly cloudy
Partly cloudy
22° /15° 0 mm 6
Sept. 26 Overcast
Overcast
21° /15° 0 mm 5
Sept. 27 Overcast
Overcast
22° /15° 0 mm 5
Sept. 28 Mist
Mist
21° /15° 0 mm 5
Sept. 29 Patchy rain possible
Patchy rain possible
21° /14° 0 mm 6
Sept. 30 Light rain
Light rain
20° /15° 1.5 mm 6
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Important Notice
Our weather forecast for Oceanside 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 Oceanside forecast closer to your planned date for the most up-to-date weather information.

Oceanside in September - FAQ

What are the expected maximum and minimum temperatures in Oceanside during September?
During September, expect a variety of temperatures with highs around 23° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Oceanside during September?
Rainfall in Oceanside during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 2 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 Oceanside during September?
The average wind speed in Oceanside during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Oceanside

Explore the daily rainfall trends and prepare for Oceansides September weather 💧

UV exposure in Oceanside during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Oceanside?

Get accurate weather forecasts for Oceanside, located at latitude 33.196 and longitude -117.379. Stay updated with localized weather information tailored for Oceanside.

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