Sausalito (CA) Temperature by Month
Sausalito in California, United States of America enjoys a stable climate, with daytime temperatures staying close to 18°C (64°F) throughout the year. Explore the full monthly breakdown below.
Sausalito Monthly Temperatures
The climate in Sausalito remains fairly constant, offering moderate temperatures throughout the year. Maximum daytime temperatures reach a pleasant 21°C (70°F) in September, dropping to a moderate 14°C (57°F) in January. Nighttime lows stay between 13°C (55°F) and 7°C (45°F).
The chart below illustrates the average maximum day and minimum night temperatures in Sausalito by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. September, the warmest month of the year, receives 270 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Sausalito vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Sausalito vs World: Temperature Compared
Sausalito's average annual maximum temperature is 18°C (64°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Sausalito?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Sausalito, January is the coolest month, with average highs of 15°C (59°F) and humidity around 80% — considered very high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Sausalito this rarely lasts long on the ground.
For more on Sausalito's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sausalito climate page.
