San José monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at San José

    San José average temperature chart
    Average monthly temperatures in San José (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 22.9 23.4 24.6 25 25 24.5 23.9 24.2 24.1 24.1 23.5 23.2
    °F 73.1 74.2 76.2 77.1 76.9 76 75.1 75.6 75.4 75.4 74.3 73.8

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in San José (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 7 7 9 56 262 296 205 282 372 343 155 36
    inches 0.3 0.3 0.4 2.2 10.3 11.7 8.1 11.1 14.6 13.5 6.1 1.4
    Rainy days 12 9 8 10 19 24 23 24 24 23 18 16
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in San José

    Average daily sunshine San José
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 7.1 7.4 7.6 7.4 6.9 6.9 6.8 6.6 6.4 6.3 6.6 6.8
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in San José (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 15 14.8 15.6 16.4 17.1 17.2 16.9 17 17.1 16.7 16.1 15.6
    Max °C 23.1 23.7 24.8 25.3 25.2 24.7 24.1 24.4 24.3 24.3 23.7 23.4
    Min °F 58.9 58.6 60.1 61.4 62.7 62.9 62.4 62.6 62.8 62.1 61 60.1
    Max °F 66.2 66.6 68.4 69.4 70 69.6 68.9 69.3 69.3 68.9 67.8 67.1
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around San José in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 28.3 28.6 29.1 29.5 29.3 28.9 28.7 28.7 28.6 28.2 27.9 28
    °F 83 83.5 84.3 85 84.7 84 83.7 83.7 83.5 82.8 82.1 82.5
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in San José (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 24 23 21 19 13 12 14 13 10 11 14 20
    mph 15 14 13 12 8 7 9 8 7 7 9 12

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in San José
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    79% 78% 77% 79% 83% 83% 84% 84% 84% 84% 82% 81%

Other monthly averages

San José weather stats

San José weather statistics
Hottest month: May 25°C 77°F
Driest month: January 7mm 0.3ins
Sunniest month: March 7.6hrs
Coldest month: January 22.9°C 73.2°F
Wettest month: September 372mm 14.6ins
Warmest sea: April 29.5°C 85.1°F
Map showing location of San José (9.93333, -84.08333)

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