San Francisco Temperature by Month

The average annual maximum temperature in San Francisco, Cundinamarca, Colombia is 22°C (72°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how San Francisco compares to cities worldwide.

The temperature in San Francisco changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a pleasant 22°C (72°F) in November to a comfortable 23°C (73°F) in August. Nighttime lows range from 14°C (57°F) in August to 13°C (55°F) in November.

The chart below illustrates the average maximum day and minimum night temperatures in San Francisco by month:

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. August, the warmest month, gets 117 hours of sunshine.

The chart below shows the average temperature throughout the year:

San Francisco's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 San Francisco, November is the coolest month, with average highs of 22°C (72°F) and humidity around 77%, considered high. In August, the warmest month, temperatures average 23°C (73°F) with 74% humidity, conditions that feel 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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on San Francisco's weather, including monthly rainfall, sunshine hours, and humidity, visit our San Francisco climate page.