Last updated: February 24, 2025
In Sausalito during September, the weather showcases a delightful Mediterranean charm characterized by a maximum temperature of 35°C (96°F) and an inviting average of 17°C (63°F). With a minimum temperature dipping to 11°C (51°F), the month offers a comfortable range for outdoor activities. Notably, precipitation is minimal, with only 2 mm (0.1 in) recorded, and remarkably, no rainy days to disrupt your plans. With a humidity level of 86%, the air remains pleasantly brisk, making September an ideal time to explore the scenic beauty of this coastal gem.
As summer draws to a close, Sausalito basks in pleasantly warm September temperatures that create a perfect backdrop for exploration. With minimums around 11°C (51°F) and average highs soaring to a striking 35°C (96°F), this month marks the peak of warmth for the region. The weather is comfortably mild, with an average of 17°C (63°F) making it ideal for outdoor activities and scenic views. As the days start to cool down prior to the autumn chill, September showcases a delightful transition where residents and visitors alike can enjoy the vibrant landscapes and coastal charm that Sausalito has to offer.
In Sausalito, September marks the tail end of the summer dry spell, contributing only 2 mm (0.1 in) of precipitation—a slight continuation of the previous months' scant rainfall. This month stands out as it recorded 0 days of precipitation, aligning with the trend of increasingly arid conditions from late spring through summer. The region typically experiences its lowest rainfall during these months, setting the stage for a dramatic shift with the onset of autumn. As temperatures cool, the precipitation levels begin to rise again in October, with an anticipated increase to 30 mm (1.2 in), reminding residents of the seasonal transitions that characterize Sausalito’s Mediterranean climate.
In September, Sausalito experiences a slight dip in humidity, averaging around 86%. This marks a continuation of the high humidity trend seen in the summer months of July and August, both at 87%. Interestingly, as the season transitions into autumn, the humidity gradually decreases, foreshadowing a shift toward the drier conditions typical of the fall months ahead. Overall, September's humidity still retains a comfortably damp feel, characteristic of the coastal climate, while setting the stage for the nicer, more moderate levels anticipated in October.
In September, Sausalito experiences a UV Index of 9, placing it in the very high exposure category, with a burn time of just 15 minutes. This follows a summer of extreme UV levels, peaking at 11 in June and July. As the season transitions into fall, the UV Index begins to decline, yet caution is still advised due to lingering intensity. This trend of decreasing UV levels continues into October, where the index drops to 7, reflecting the gradual decrease in sun exposure as temperatures cool. For those enjoying the beautiful vistas of Sausalito this month, it remains essential to stay vigilant against sunburn. For more information about UV levels, check out the Sausalito UV Index.
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September in Sausalito offers a delightful blend of warmth and sunshine, with 299 hours of glorious sunshine illuminating the charming coastal town. As summer winds down, this month's hours reflect a slight dip from the peak sunshine of June and July, which basked in 355 and 349 hours, respectively. Nevertheless, September still boasts more sunlight than the earlier months of the year, showcasing a beautiful transition into fall. The gradual decrease in daylight hours invites a cozy atmosphere, making it the perfect time for leisurely strolls by the water, enjoying vibrant sunsets, and savoring the lingering warmth of summer's embrace before autumn takes hold.
As September rolls in, Sausalito experiences a moderate chance of sunny weather, with about 51% of the days likely to be bright and cheerful. This figure mirrors the chances observed in both October and June, showcasing a more consistent trend in midday tranquility following the sun-soaked months of May and June, which boast higher percentages of 66% and 51%, respectively. Interestingly, summer itself dips to a 37% chance in July, leading to slightly sunnier conditions as autumn approaches. Overall, while September is not the sunniest month, it retains a pleasing balance, making it an inviting time to enjoy the picturesque views of Sausalito.
As summer wanes into autumn, September brings a gentle transition in daylight duration for Sausalito, United States. With 12 hours of daylight, September marks a slight decrease from the peak of 14 hours experienced during the summer months of May through July. This gradual decline continues the trend set in August, where daylight decreases from its summer high. The shortening days hints at the upcoming change of seasons, as the daylight begins to retreat towards the 11 hours typical of October. As the community savors the warm early fall days, the shift in light serves as a beautiful reminder of nature’s rhythms.
In September, the winds in Sausalito begin to taper off, with an average speed of just 3.3 m/s (7 mph), a slight decline from the breezier summer months. This marks a subtle transition as the gusty peaks of May and June, which boast average speeds of 5.4 m/s (12 mph) and 4.7 m/s (10 mph) respectively, give way to more gentle breezes. Interestingly, September falls below both the bustling activity of the preceding months and the typical early autumn conditions, signaling a shift in the maritime air patterns. As the season changes, this tranquil wind contributes to the picturesque ambiance of Sausalito, inviting locals and visitors alike to embrace the serene beauty of the waterfront.
The weather in Sausalito 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 Sausalito and find detailed weather information for every month.
September and January exhibit striking contrasts in weather patterns. September typically showcases warmer conditions with temperatures ranging from a minimum of 11°C (51°F) to a scorching maximum of 35°C (96°F), while January feels much cooler, with temperatures reaching from a chilly 3°C (38°F) to a maximum of 21°C (70°F). Additionally, September boasts minimal rainfall, averaging only 2 mm (0.1 in) with no precipitation days, contributing to a humid atmosphere at 86%. In contrast, January is significantly wetter, accumulating about 106 mm (4.2 in) of precipitation over nine days, yet it maintains a slightly lower humidity level of 85%. For more specific insights into January weather, you can visit Sausalito weather in January.
September and February present strikingly different weather patterns. In September, temperatures range from a comfortable minimum of 11°C (51°F) to a sweltering maximum of 35°C (96°F), with average conditions settling at around 17°C (63°F). The month experiences minimal precipitation, with only 2 mm recorded over no rainy days, and humidity is notably high at 86%. In contrast, February is much cooler, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 20°C (69°F), averaging just 11°C (52°F). This month is quite wet, with 109 mm of precipitation spread over 9 days, and humidity slightly lower at 82%. For more detailed information on February weather in Sausalito, you can visit Sausalito weather in February.
September typically experiences warmer temperatures with a minimum of 11°C (51°F) and a maximum reaching up to 35°C (96°F), alongside very low precipitation of only 2 mm and no rainy days. In contrast, March has cooler temperatures, starting at a minimum of 5°C (42°F) and peaking at 20°C (69°F), while also encountering significantly higher rainfall, totaling 78 mm across 10 days. Despite the increase in precipitation, March's humidity remains relatively steady at 82%, slightly lower than September's 86%. For a detailed look at the weather patterns specific to March, you can check Sausalito weather in March.
Comparing the weather in September and April reveals distinct seasonal differences. September often boasts warmer temperatures, with an average reaching 17°C (63°F) and maximums soaring up to 35°C (96°F). In contrast, April tends to be cooler, with an average of 13°C (55°F) and highs not exceeding 28°C (82°F). Additionally, September is notably dry, featuring no recorded precipitation, while April experiences more rain, averaging 35 mm (1.4 in) over five days. Humidity remains relatively high in both months, but September is slightly more humid at 86%, compared to April's 79%. For more details on April’s climate, you can check out Sausalito weather in April.
In comparison to September, May typically presents cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 24°C (75°F) compared to September's range of 11°C (51°F) to 35°C (96°F). The average temperature in May hovers around 14°C (57°F), which is notably lower than September's 17°C (63°F). Additionally, May experiences more precipitation, totaling 20 mm (0.8 in) over two days, while September remains quite dry with only 2 mm (0.1 in) and no rainy days. Despite the slightly higher humidity in September at 86%, both months maintain similar levels of humidity, with May at 83%. For a more detailed look at the weather patterns, you can check Sausalito weather in May.
In comparing the weather between September and June, September tends to be warmer, with an average temperature of 17°C (63°F), peaking at 35°C (96°F), compared to June's average of 15°C (60°F) and maximum of 31°C (88°F). Both months experience minimal precipitation, with September receiving only 2 mm (0.1 in) and June slightly higher at 3 mm (0.1 in), but neither month records any rainy days. Humidity levels are also quite comparable, with September at 86% and June slightly lower at 84%. For a detailed look at June weather, you can visit Sausalito weather in June.
In comparing the weather between September and July, September experiences a wider temperature range, with minimum temperatures around 11°C (51°F), average temperatures of 17°C (63°F), and maximums soaring up to 35°C (96°F). In contrast, July has a more modest temperature profile, with minimums at 11°C (52°F), an average of 15°C (60°F), and a maximum of only 24°C (76°F). Both months see very little precipitation, with September recording just 2 mm (0.1 in) and July slightly higher at 3 mm (0.1 in), yet neither has any rainy days. Humidity levels remain similar, with September at 86% and July at 87%. For a closer look at July weather, you can visit Sausalito weather in July.
In comparing the weather of September to August, September shows a notable increase in maximum temperatures, reaching as high as 35°C (96°F) compared to August's maximum of 27°C (81°F). Both months experience minimal precipitation, with only 2 mm (0.1 in) and no rainy days, contributing to the dry condition of late summer. While average temperatures are slightly higher in September at 17°C (63°F) versus August's 16°C (61°F), the humidity remains relatively constant between the two months, at 86% in September and 87% in August. For more insights on August weather patterns, you can visit Sausalito weather in August.
In September, the weather is characterized by a wider temperature range, with minimums around 11°C (51°F) and maximums soaring up to 35°C (96°F), accompanied by high humidity at 86% and virtually no precipitation. In contrast, October sees a slight dip in temperatures, with minimums dropping to 9°C (48°F) and a maximum of 28°C (84°F). The month also brings increased rainfall, averaging 30 mm (1.2 in) over just two days, and a decrease in humidity to 80%. For more insights on what to expect, check out Sausalito weather in October.
September typically showcases warmer temperatures, with averages around 17°C (63°F) and highs reaching up to 35°C (96°F). In contrast, November brings cooler conditions, with an average temperature of 13°C (56°F) and maximums only reaching 23°C (74°F). September experiences minimal rainfall, averaging just 2 mm and no rainy days, while November sees a marked increase in precipitation, totaling 50 mm over five days. The humidity levels are slightly higher in September at 86%, compared to 79% in November. For more detailed insights on November weather, check out Sausalito weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a cool minimum of 11°C (51°F) to a scorching maximum of 35°C (96°F), with an average of 17°C (63°F) and minimal precipitation. This month experiences very humid conditions, at 86%, yet there are no recorded days of rainfall. In stark contrast, December sees significantly cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 20°C (69°F), averaging at 11°C (52°F). The month is notably wetter, receiving 95 mm (3.7 in) of precipitation over nine days, and the humidity drops to 79%. For more detailed insights, check out Sausalito weather in December.
In September, Sausalito experiences a delightful transition into early fall, characterized by mild temperatures and low precipitation, making it one of the driest months of the year. Unlike the more humid and rainier summer months, September boasts a refreshing average temperature of 17°C (63°F), with a maximum of 35°C (96°F) on warmer days. This month stands out with an impressive 0 days of rain and remarkably high humidity levels at 86%, inviting residents and visitors alike to enjoy the lush waterfront scenery without the usual summer crowds. For a more detailed look at how September compares to other months, explore the comprehensive insights available at Sausalito Climate.