Normal weather for Santa Monica in September
It's warm in September in Santa Monica with an average temperature of 26°C. Temperatures this month range from a low of 24°C to a high of 29°C. At night, you can expect temperatures between 17°C and 21°C.
In September, there is an average of 24 mm of precipitation, spread over 2 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Santa Monica in September |
New York | ||
|---|---|---|---|
 Average Temperature |
26°C | 27°C | |
 High Temp |
29°C | 31°C | |
| Low Temp |
24°C | 21°C | |
 Total Precipitation |
24 mm | 57 mm | |
| Rainy Days |
2 days | 9 days | |
Start of September
The month of September starts in Santa Monica with hot temps, averaging around 27°C during the day and nights around 20°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, a T-shirt, light pants or skirt, and a light jacket are ideal.
Mid September
By mid-September, daytime temps drop to around 26°C, with nights around 19°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
End of September
By the end of September, the average daytime temperature in Santa Monica is around 26°C, while nighttime temps are about 19°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
Because temperatures drop in the evening, wearing layers is recommended. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. For the evening and morning, a shirt, maybe a light sweater, and thin pants are recommended.
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Water temperature
The water temperature at Santa Monica is 25°C this month. Lovely temperature for a swim.
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Santa Monica?
Looking for great weather? September is a good time to be in Santa Monica. The temperatures are nice, and there’s not too much rain.
Temperature records for Santa Monica in September
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Daily Temperature in September in Santa Monica
This chart shows the average daily high and low temperatures in September for Santa Monica, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Santa Monica
The chart below shows the average daily precipitation in September for Santa Monica, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 2 days of precipitation in Santa Monica.
Daily UV Index in September in Santa Monica
This chart shows the average daily UV index in September in Santa Monica, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Santa Monica Over the Years
This chart shows the average temperature in September in Santa Monica, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Santa Monica Over the Years
This chart shows the average precipitation in September in Santa Monica, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in September for Santa Monica
Click on any day in September to get detailed info about the usual weather on that day in Santa Monica. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Santa Monica
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Average Weather in Santa Monica by Month
Click on a month below to see detailed weather info for Santa Monica. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Santa Monica for all months at once
