September Weather in Malibu, United States

Last updated: February 24, 2025

September in Malibu offers a delightful blend of warm temperatures and minimal precipitation, making it an ideal time for outdoor activities. With maximum highs reaching 33°C (91°F) and a comfortable average of 21°C (70°F), the weather ensures pleasant beach days. Evenings cool down to a minimum of 15°C (59°F), inviting cozy gatherings. Remarkably, Malibu experiences no measurable precipitation, with only 1 mm (0.1 in) recorded, allowing for uninterrupted enjoyment of the sun-soaked days. The atmosphere is further enhanced by a humidity level of 68%, creating a refreshing coastal breeze that complements this picturesque month.

September Temperature in Malibu

In September, Malibu embraces the tail end of summer with delightful temperatures that invite beachgoers and sun-seekers alike. The minimum temperature hovers around 15°C (59°F), while the average reaches a comfortable 21°C (70°F), and highs can soar to an impressive 33°C (91°F). This warm weather reflects a gradual upward trend from the cooler spring months, making September one of the most pleasant times to enjoy the coastal allure. As daylight lingers, the blend of warmth and coastal breezes creates an ideal environment for outdoor activities, beach gatherings, and enjoying the stunning sunsets that Malibu is famed for.

September Weather in Malibu: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Malibu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec575757606165697070676357
Data source: Temperature data for Malibu generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Malibu

In September, Malibu experiences a notable shift in its weather patterns, characterized by exceptionally low precipitation. With just 1 mm (0.1 in) of rain recorded over the month, it's clear that summer's dry spell continues into early fall, as no rainy days were reported. This is part of a broader trend throughout the summer months, where rainfall dwindles to almost negligible amounts, culminating in a mere 1 mm in August and September combined. This stark decrease in precipitation is typical for the region, allowing residents and visitors alike to enjoy sun-soaked days on the beach. However, looking ahead, October brings a slight uptick, hinting at the return of more consistent rainfall as the season shifts.

September Precipitation Trends in Malibu

The chart displays monthly precipitation patterns in Malibu, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec7055691511221181883
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Malibu

As the summer warmth begins to wane, September in Malibu brings a slight dip in humidity to 68%, marking it as one of the least humid months of the year. This decrease continues the trend observed in the late summer, where August recorded 69%. Overall, while humidity levels have fluctuated throughout the year, they generally remain higher during the winter months, peaking in February at 79%. This gradual decline into fall hints at the region's shift toward a more refreshing and comfortable climate, making September an inviting time to enjoy the coastal beauty of Malibu.

September Average Humidity in Malibu

This chart illustrates the average monthly humidity levels in Malibu, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Malibu

In September, Malibu enjoys the sun with a UV Index of 10, placing it in the very high exposure category. This means that even short periods under the sun can lead to skin damage, with a burn time of just 15 minutes for unprotected skin. Interestingly, while summer months peaking at 11 reflect the extreme sun exposure, September marks a slight decrease, yet the need for sun protection remains critical. As daylight wanes and autumn approaches, it’s essential to stay vigilant about UV safety. For more details on the changing UV levels throughout the year, visit Malibu UV Index.

Maximum UV Index Levels in Malibu for September

The chart shows the monthly maximum UV Index (UVI) for Malibu in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec468101011111110754
Data source: Malibu September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Malibu

September in Malibu is a delightful transition as summer begins to wane, boasting 310 hours of sunshine. This month sees a gentle decline from the sun-drenched days of July, which holds the record at 379 hours, but it still offers a vibrant backdrop for outdoor activities and beach outings. The sustained warmth from the summer months lingers, providing pleasant days that are perfect for soaking up the sun before the cooler fall air settles in. As the days gradually shorten into October, the contrast becomes evident, but September remains a golden opportunity to relish the beautiful California coast.

Monthly Sunshine Duration in Malibu: September Highlighted

The September sunshine duration represents the total number of hours Malibu experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec188h227h278h314h342h355h379h357h310h288h253h224h
Data source: Malibu September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Malibu During September

In Malibu, the likelihood of sunny weather experiences some notable fluctuations throughout the year, with September standing out as a particularly bright month. With a 71% chance of sunshine, it's slightly higher than the summer months of July and August, which boast 65% and 70%, respectively. This trend indicates that as summer transitions into fall, the sunny days don't drastically diminish, suggesting that September retains a warm, inviting allure. As the year progresses towards the cooler months, chances of sun gently taper off, with October at 68% and November at 63%. So, if you're contemplating a trip to Malibu in September, rest assured you're likely to bask in plenty of sunshine!

Percentage of Sunny Days in September in Malibu

The chart illustrates the percentage of sunny days in Malibu throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Malibu experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec63%68%74%57%51%60%65%70%71%68%63%50%
Data source: Malibu September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Malibu in September

As summer gracefully transitions into autumn, September in Malibu sees a delightful 12 hours of daylight, marking a gentle decline from the sun-soaked 14 hours of June and July. The daylight hours begin to taper off, moving closer to the cozy conditions of fall, yet the vibrant coastal charm of Malibu remains captivating. This month acts as a bridge between the exuberance of summer and the tranquility of autumn, as beachgoers savor the lingering warmth and splendid sunsets. Interestingly, the trend reflects a gradual dimming of daylight, with October further reducing to 11 hours and November settling at 10 hours, inviting a shift towards a more serene and introspective season.

Average Daylight Hours in Malibu for September

The chart illustrates the variation in daylight duration in Malibu throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 9m10h 58m11h 59m13h 3m13h 56m14h 22m14h 7m13h 20m12h 19m11h 17m10h 22m9h 54m
Data source: Malibu daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Malibu

In September, Malibu experiences a gentle sigh of breeze with an average wind speed of 2.4 m/s (5 mph), reflecting the calm that often settles as summer wanes. This notably marks a decline from the slightly stronger winds of the earlier months. Since June, a gradual cooling trend has been observed, with wind speeds dipping from earlier highs, creating a more serene atmosphere ideal for beachgoers and sunset watchers alike. As the year progresses into October, a slight uptick to 2.8 m/s (6 mph) hints at the transition towards the more dynamic fall months. The consistency and moderation of September's winds embody the essence of Malibu's late summer charm, inviting relaxation in the face of nature's soothing rhythms.

Average September Wind Speed in Malibu

The chart displays monthly wind speed patterns in Malibu, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.33.03.22.92.72.72.42.52.4 m/s2.82.53.0
Data source: Malibu September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Malibu Compares to Other Months

The weather in Malibu changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Malibu and find detailed weather information for every month.

In September, the weather is warm and relatively dry, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 33°C (91°F) and almost no precipitation. The average temperature is a comfortable 21°C (70°F), accompanied by a humidity level of 68%. In contrast, January sees a significant drop in temperatures, with a minimum of 7°C (44°F) and a maximum of 28°C (83°F), resulting in an average temperature of 14°C (57°F). Unlike September, January experiences more rainfall, with about 70 mm (2.8 in) of precipitation spread over approximately five days and a slightly higher humidity of 74%. For more detailed insights, you can check Malibu weather in January.

September is characterized by warm and pleasant weather, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 33°C (91°F) and averaging around 21°C (70°F). It typically experiences very little precipitation, averaging only 1 mm (0.1 in) across the month, and maintains a moderate humidity level of 68%. In contrast, February presents cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 28°C (82°F), averaging 14°C (57°F). It is also a wetter month, receiving around 55 mm (2.1 in) of rainfall over approximately five days and experiencing higher humidity at 79%. For more detailed information, check out Malibu weather in February.

In September, the weather is generally warm and dry, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 33°C (91°F) and negligible precipitation. The average temperature sits comfortably at 21°C (70°F) with a humidity level of 68%. In contrast, March brings cooler temperatures, with a minimum of 7°C (46°F) and a maximum of 25°C (77°F), and significantly higher precipitation at 69 mm (2.7 in) over about 7 days, resulting in a humidity level of 75%. For more detailed information, you can check out Malibu weather in March.

September and April showcase distinct weather patterns. In September, temperatures are generally warmer, with averages around 21°C (70°F) and highs reaching up to 33°C (91°F), while precipitation is minimal with virtually no rainy days. In contrast, April tends to be cooler, averaging 16°C (60°F) and peaking at 31°C (89°F), accompanied by a higher precipitation level of 15 mm (0.6 in) over two days. Both months have similar humidity levels, hovering around 68-70%. For more detailed information about April weather in Malibu, you can check this link: Malibu weather in April.

In September, the weather tends to be warmer, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 33°C (91°F), giving it an average of 21°C (70°F). The month enjoys minimal precipitation, with no rainy days reported, and humidity levels around 68%. In contrast, May features cooler temperatures, with a minimum of 11°C (51°F) and a maximum of 27°C (80°F), averaging at 16°C (62°F). It experiences slightly higher precipitation at 11 mm (0.4 in) over one day, along with a comparable humidity level of 70%. For more detailed insights, check out Malibu weather in May.

In comparing the weather in September to that of June, September generally presents warmer temperatures, with average highs reaching up to 33°C (91°F) compared to June's maximum of 29°C (85°F). Both months feature minimal precipitation, with September receiving only 1 mm (0.1 in) and June slightly higher at 2 mm (0.1 in), yet both have dry conditions with no rainy days. Additionally, September tends to be slightly more humid at 68%, compared to the 72% humidity recorded in June. For a more detailed look at June's climate, check out Malibu weather in June.

In comparing the weather of September and July, we observe notable similarities and slight differences. Both months feature a minimum temperature of around 15°C (59°F), with average temperatures hovering at 21°C (70°F) and maximum temperatures reaching about 33°C (91°F in September and 92°F in July). Precipitation is minimal, with September receiving just 1 mm (0.1 in) and July slightly higher at 2 mm (0.1 in), both of which recorded 0 days of rain. However, humidity levels are slightly lower in September at 68% compared to July's 73%, indicating a marginally drier feel to the air as summer winds down. For more detailed insights, you can refer to Malibu weather in July.

In September, the weather remains quite pleasant, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 33°C (91°F), averaging at 21°C (70°F). The month experiences no precipitation, contributing to a humidity level of 68%. Comparatively, August has slightly higher minimum temperatures, starting at 17°C (63°F) and peaking at a maximum of 30°C (86°F), with a similar average of 21°C (71°F). Like September, August also sees minimal precipitation, with only 1 mm recorded across 0 days, and a humidity level that is marginally higher at 69%. For more details on the weather specifics, you can check Malibu weather in August.

September generally offers warmer temperatures, with an average of 21°C (70°F) and highs reaching up to 33°C (91°F). The month is quite dry, recording minimal precipitation and maintaining a humidity level of 68%. In contrast, October sees a slight dip in minimum and average temperatures, with a minimum of 12°C (53°F) and an average of 20°C (68°F). Despite the overall increase in maximum temperatures, peaking at 35°C (95°F), October experiences more rainfall, totaling 8 mm (0.3 in) over just one rainy day, while humidity remains relatively stable at 67%. For more detailed weather insights, you can visit Malibu weather in October.

September tends to offer warmer weather with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 33°C (91°F), while November cools down considerably, showcasing a minimum of 8°C (47°F) and an average of 17°C (63°F). Additionally, September boasts virtually no precipitation, with zero rainy days recorded, whereas November experiences slightly more moisture, with 18 mm (0.7 in) of rain over one day. Interestingly, despite these differences in temperature and precipitation, humidity remains constant at 68% for both months. For more detailed insights into November's weather, you can check out Malibu weather in November.

September and December present quite contrasting weather patterns. In September, temperatures range from a mild minimum of 15°C (59°F) to a maximum of 33°C (91°F), with an average of 21°C (70°F). This month is characterized by minimal precipitation, with only 1 mm recorded and no rainy days, along with a relative humidity of 68%. In contrast, December sees cooler temperatures, with a minimum of 7°C (45°F), an average of 14°C (57°F), and a maximum of 26°C (78°F). This winter month experiences significantly more precipitation, totaling 83 mm over 5 days, and slightly higher humidity at 71%. For more detailed information on December weather, check out Malibu weather in December.

Compare Malibu's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Malibu

In September, Malibu experiences delightful weather characterized by warm temperatures that typically outshine those of the preceding summer months. With minimal precipitation and pleasantly moderate humidity, this month offers an ideal climate for beachgoers and outdoor enthusiasts alike. The average temperature hovers around a comfortable 21°C (70°F), making it perfect for both daytime adventures and relaxed evenings by the shore. Compared to the cooler months that follow, September stands out as a beautiful transition, inviting visitors to indulge in the sparkling coast and vibrant sunsets. For more insights into what makes Malibu's weather unique throughout the year, explore Malibu Climate.