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Weather Quick Facts

  • The highest monthly average temperature in Seaside for September is 61.2 degrees
  • The lowest monthly average temperature in Seaside for December is 50.7 degrees
  • The most monthly precipitation in Seaside occurs in January with 3 inches
  • The air quality index in Seaside is 12% better than the national average
  • The pollution index in Seaside is 252% worse than the national average

Compare Seaside, CA Weather

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      Seaside Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January43°F63°F51°F3.0"
      February45°F63°F53°F2.6"
      March46°F63°F54°F2.7"
      April47°F64°F55°F1.2"
      May50°F65°F56°F0.3"
      June52°F68°F59°F0.1"
      July54°F69°F60°F0.0"
      August55°F69°F60°F0.1"
      September54°F71°F61°F0.1"
      October51°F70°F60°F1.0"
      November47°F66°F55°F1.6"
      December42°F61°F51°F2.8"

      Seaside air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexSeasideCaliforniaNational
      Air quality index375542
      Pollution index9,602,13010,473,1902,726,193

      Seaside air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality330
      Days with moderate air quality34
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Seaside air quality information

      PollutantTotal
      Arsenic0.070%
      Benzene0.190%
      Carbon Tetrachloride0.000%
      Lead0.080%
      Mercury0.070%

      Average monthly Seaside temperature with heat index

      Seaside monthly precipitation with daily maximum

      Seaside monthly snow depth with daily maximum

      Seaside monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Carmel Valley Village, CA4,1753726.0%
      Elkhorn, CA9983726.0%
      Pacific Grove, CA15,4713726.0%
      Spreckels, CA3733726.0%
      Castroville, CA6,3323726.0%
      Seaside, CA34,0633726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      New City, NY34,060512.0%
      Merritt Island, FL33,9753628.0%
      Pullman, WA33,9741864.0%
      Salisbury, NC33,9614020.0%
      North Ridgeville, OH33,96150= 100
      Seaside, CA34,0633726.0%
      Source: The Seaside, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.