ClimateForecastNovemberDecember >>

Tustin (CA) Climate by Month

Temperatures see a moderate degree of fluctuation, transitioning from very warm conditions to pleasant. The area is known for its low rainfall. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

In Tustin, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures range from a very warm 30°C in August, the warmest time of the year, to a pleasant 20°C during cooler months like December. At night, temperatures typically average around 8°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Tustin experiences desert-like conditions in terms of precipitation with almost no rainfall, generally receiving 234 mm annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, December receives moderate rainfall, averaging 66 mm of precipitation, recorded across 8 rainy days. In contrast, the drier season, August brings less rainfall, with 0.2 mm over 0 rainy days.

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

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Tustin. While July receives considerable daily sunshine with up to 12.3 hours, January marks the darkest time of the year, where sunshine is scarce with only 6.6 hours of sunlight per day.

Monthly hours of sunshine

Data from: Corona, the United States of America (27 KM, 17 Miles).

Daily hours of sunshine

Data from: Corona, the United States of America (27 KM, 17 Miles).

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

During the months of January, February, March, April, May and November 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:
  • Which is the warmest month in Tustin?
    August has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Tustin?
    The coldest month is December with an average maximum temperature of 20°C.
  • Which is the wettest month in Tustin?
    December tops the wettest month list with 66 mm of rainfall.
  • Which is the driest month in Tustin?
    August is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in Tustin?
    July is the sunniest month with an average of 369 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 Tustin (CA)

    Sat   Nov 23
    19°C | 8°C
    SW 11 km/h
    1.3 mm
    overcast and rain

    overcast and rain

    Sun   Nov 24
    19°C | 12°C
    SW 11 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Mon   Nov 25
    21°C | 10°C
    W 11 km/h
    partly cloudy and no rain

    partly cloudy and no rain