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San Juan Climate & Temperature

  • San Juan, Puerto Rico is at 18°25'N, 66°0'W, 3 m (10 ft). See map.
  • San Juan has a tropical monsoonal climate (Köppen-Geiger classification: Am) with a dry season and a heavy monsoon the rest of year, no cold season.
  • According to the Holdridge life zones system of bioclimatic classification San Juan is situated in or near the subtropical moist forest biome.
  • The annual average temperature is 25.6 degrees Celsius (78.1 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 3.5 °C (6.3°F). This indicates that the continentality type is hyperoceanic, subtype truly hyperoceanic.
  • Total annual Precipitation averages 1628 mm (64.1 inches) which is equivalent to 1628 Litres/m² (39.93 Gallons/ft²).
  • On average there are 2829 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from San Juan you would pop up nearest to the climate station at Onslow, Western Australia, Australia (Subtropical desert scrub biome).

Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) 27 (81) 28 (82) 28 (82) 29 (84) 30 (86) 31 (88) 31 (88) 31 (88) 31 (88) 31 (88) 30 (86) 28 (82) 30 (85)
average temperature iconAverage Temperature °C ( °F) 24 (74) 24 (74) 24 (75) 25 (77) 26 (79) 27 (81) 27 (81) 27 (81) 27 (81) 27 (81) 26 (79) 25 (76) 26 (78)
minimum temperature iconAverage Min Temperature °C ( °F) 20 (68) 19 (66) 20 (68) 21 (70) 22 (72) 23 (73) 23 (73) 23 (73) 23 (73) 23 (73) 22 (72) 21 (70) 22 (71)
rainfall iconAverage Precipitation mm (in) 119 (5) 71 (3) 56 (2) 94 (4) 181 (7) 144 (6) 159 (6) 181 (7) 172 (7) 148 (6) 165 (6) 138 (5) 1628 (64)
rain days iconNumber of Wet Days (probability of rain on a day) 17 (55%) 13 (46%) 11 (35%) 14 (47%) 19 (61%) 18 (60%) 21 (68%) 19 (61%) 18 (60%) 17 (55%) 18 (60%) 19 (61%)   204 (56%)
sunshine iconAverage Sunlight Hours/ Day 07:23 07:40 08:46 08:32 07:56 07:32 08:23 08:32 07:06 07:30 07:00 06:30   07:44
daylight iconAverage Daylight Hours & Minutes/ Day 11h 08' 11h 30' 12h 00' 12h 32' 12h 58' 13h 12' 13h 06' 12h 43' 12h 12' 11h 40' 11h 14' 11h 01'   12h 00'
sunny or cloudy iconPercentage of Sunny (Cloudy) Daylight Hours 67 (33) 67 (33) 74 (26) 69 (31) 62 (38) 58 (42) 65 (35) 68 (32) 59 (41) 65 (35) 63 (37) 60 (40)   65 (35)
sun altitude iconSun altitude at solar noon on the 21st day (°). 51.7 61 71.9 83.6 88 85 87.5 83.5 72 60.5 51.4 48.1   70.3

San Juan Climate Comparisons

In depth comparisons with over 3,600 world destinations. Better understand a climate by comparing it relative to one you know (check it out):

Bangkok, Beijing, Bogotá, Buenos Aires, Cairo, Delhi, Dhaka, Guangzhou, Istanbul, Jakarta, Karachi, Kolkata, Lagos, London, Los Angeles, Manila, Mexico City, Moscow, Mumbai, New York, Osaka, Rio de Janeiro, São Paulo, Seoul, Shanghai, Tokyo, other.

San Juan Climate Graph in Metric Units

San Juan Climate Graph

San Juan Climograph in English Units

San Juan Climate Graph

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