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Hachijojima Climate & Temperature

  • Hachijojima, Japan is at 33°7'N, 139°46'E, 156 m (512 ft). See map.
  • Hachijojima has a humid subtropical climate that is mild with no dry season, constantly moist (year-round rainfall). Summers are hot and muggy with thunderstorms. Winters are mild with precipitation from mid-latitude cyclones. Seasonality is moderate. (Köppen-Geiger classification: Cfa).
  • The mean temperature is 18.1 degrees Celsius (64.6 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 16.3 °C (29.3°F). This indicates that the continentality type is oceanic, subtype truly oceanic. Hachijojima Climate Graph
  • In the winter time records indicate temperatures by day reach 13.9°C (57°F) on average falling to 8.3°C (47°F) overnight.
  • In spring time temperatures climb reaching 18.8°C (65.9°F) generally in the afternoon with overnight lows of 13.1°C (55.6°F).
  • During summer average high temperatures are 27.1°C (80.7°F) and average low temperatures are 22.4°C (72.3°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 23.6°C (74.5°F) during the day and lows of 18.4°C (65.1°F) generally shortly after sunrise.
  • Total annual Precipitation averages 3073.4 mm (121 inches) which is equivalent to 3073.4 Litres/m² (75.38 Gallons/ft²).
  • Were you to burrow down through the centre of the Earth from Hachijojima you would pop up nearest to the climate station at Torres, Brazil where you would find a Humid subtropical climate (Subtropical moist forest biome).

Hachijojima Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) 13 (55) 13 (56) 15 (60) 19 (67) 22 (72) 24 (76) 28 (82) 29 (85) 28 (82) 24 (74) 20 (68) 16 (60) 21 (70)
 
Average Temperature °C ( °F) 10 (50) 10 (50) 12 (54) 16 (61) 19 (67) 22 (72) 25 (77) 27 (80) 25 (77) 21 (69) 17 (63) 13 (55) 18 (65)
 
Average Min Temperature °C ( °F) 8 (46) 8 (46) 9 (49) 13 (56) 17 (62) 20 (68) 23 (74) 24 (76) 23 (73) 18 (65) 14 (58) 10 (50) 16 (60)
 
Average Precipitation mm (in) 175 (7) 180 (7) 258 (10) 239 (9) 249 (10) 350 (14) 189 (7) 204 (8) 344 (14) 457 (18) 255 (10) 173 (7) 3073 (121)
Average Daylight Hours/ Day 10h 13' 10h 56' 11h 55' 12h 58' 13h 50' 14h 17' 14h 05' 13h 20' 12h 19' 11h 17' 10h 24' 9h 59' 12h 00'
Sun altitude at solar noon on the 21st day (°). 36.9 46.1 57 68.7 77 80.3 77.3 69 57.6 46.1 36.9 33.5 57.2

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