Oceanside
September
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.
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28
Dry days
2
Rainy days
0
Snow days
23°/17°
Temperatures
16 km/h
Avg max wind
78 %
Avg humidity
Oceanside in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  25° | 3  25° | 4 25° | 5  27° | 6 27° | 7 29° |
| 8 30° | 9 30° | 10 27° | 11  25° | 12 24° | 13 22° | 14 22° |
| 15 22° | 16 21° | 17 20° | 18 21° | 19 20° | 20 20° | 21 20° |
| 22 22° | 23 22° | 24 22° | 25 22° | 26 21° | 27 22° | 28 21° |
| 29 21° | 30  20° |
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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 | 25° /18° | 0 mm | 7 | |
| Sept. 2 | Overcast | 25° /19° | 0 mm | 6 | |
| Sept. 3 | Patchy rain possible | 25° /18° | 0.1 mm | 6 | |
| Sept. 4 | Partly cloudy | 25° /18° | 0 mm | 7 | |
| Sept. 5 | Mist | 27° /19° | 0 mm | 7 | |
| Sept. 6 | Overcast | 27° /19° | 0 mm | 7 | |
| Sept. 7 | Partly cloudy | 29° /19° | 0 mm | 7 | |
| Sept. 8 | Partly cloudy | 30° /22° | 0.2 mm | 7 | |
| Sept. 9 | Partly cloudy | 30° /20° | 0 mm | 8 | |
| Sept. 10 | Overcast | 27° /19° | 0 mm | 7 | |
| Sept. 11 | Cloudy | 25° /18° | 0 mm | 6 | |
| Sept. 12 | Mist | 24° /17° | 0 mm | 6 | |
| Sept. 13 | Cloudy | 22° /16° | 0 mm | 5 | |
| Sept. 14 | Cloudy | 22° /16° | 0 mm | 6 | |
| Sept. 15 | Overcast | 22° /16° | 0 mm | 6 | |
| Sept. 16 | Mist | 21° /16° | 0.3 mm | 5 | |
| Sept. 17 | Overcast | 20° /17° | 0 mm | 5 | |
| Sept. 18 | Mist | 21° /16° | 0 mm | 5 | |
| Sept. 19 | Mist | 20° /16° | 0 mm | 5 | |
| Sept. 20 | Patchy rain possible | 20° /15° | 0.1 mm | 5 | |
| Sept. 21 | Patchy rain possible | 20° /16° | 0.2 mm | 5 | |
| Sept. 22 | Overcast | 22° /16° | 0 mm | 5 | |
| Sept. 23 | Overcast | 22° /16° | 0 mm | 5 | |
| Sept. 24 | Cloudy | 22° /16° | 0 mm | 5 | |
| Sept. 25 | Partly cloudy | 22° /15° | 0 mm | 6 | |
| Sept. 26 | Overcast | 21° /15° | 0 mm | 5 | |
| Sept. 27 | Overcast | 22° /15° | 0 mm | 5 | |
| Sept. 28 | Mist | 21° /15° | 0 mm | 5 | |
| Sept. 29 | Patchy rain possible | 21° /14° | 0 mm | 6 | |
| Sept. 30 | 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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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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