ClimateForecastNovemberDecember >>

Millbrae (CA) Climate by Month

Temperatures see a moderate degree of fluctuation, transitioning from warm conditions to mild. It typically sees modest rainfall throughout the year. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

In Millbrae, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures reach a comfortable 23°C in September. In January, the coolest month of the year, temperatures drop to a moderate 14°C. At night, expect cooler temperatures, averaging 7°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Millbrae typically sees modest rainfall throughout the year, with an average annual precipitation of 491 mm. Millbrae can be quite wet during December, receiving approximately 117 mm of precipitation over 13 rainy days. In contrast July, experiences much drier conditions, with 0.3 mm of rainfall, spread across a single rainy day.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Millbrae can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 10.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.3 hours of sunlight per day.

Monthly hours of sunshine

Data from: San Francisco, the United States of America (2 KM, 1 Miles).

Daily hours of sunshine

Data from: San Francisco, the United States of America (2 KM, 1 Miles).

Average water temperature

The mean water temperature over the year in Millbrae ranges from 12°C in January to 14°C in June.

Water temperature over the year

Data from: San Francisco, the United States of America (2 KM, 1 Miles).

The best time of year to visit Millbrae in the United States of America

During the months of June, July, August, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Millbrae have a dry season?
    Yes, the months of May, June, July, August and September are very dry.
  • Which is the warmest month in Millbrae?
    September has an average maximum temperature of 23°C and is the warmest month of the year.
  • Which is the coldest month in Millbrae?
    The coldest month is January with an average maximum temperature of 14°C.
  • Which is the wettest month in Millbrae?
    December tops the wettest month list with 117 mm of rainfall.
  • Which is the driest month in Millbrae?
    July is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in Millbrae?
    May is the sunniest month with an average of 324 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Millbrae (CA)

    Thu   Nov 21
    16°C | 12°C
    S 32 km/h
    5.7 mm
    broken clouds and rain

    broken clouds and rain

    Fri   Nov 22
    17°C | 13°C
    S 32 km/h
    35 mm
    overcast and heavy rain

    overcast and heavy rain

    Sat   Nov 23
    17°C | 11°C
    W 14 km/h
    1.8 mm
    partly cloudy and  chance of rain

    partly cloudy and chance of rain