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Iriomotejima Climate & Temperature

  • Iriomotejima, Japan is at 24°26'N, 123°45'E, 11 m (37 ft). See map.
  • Iriomotejima 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 average temperature is 23.3 degrees Celsius (73.9 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 10.8 °C (19.4°F). This indicates that the continentality type is hyperoceanic, subtype barely hyperoceanic. Iriomotejima Climate Graph
  • In the winter time records indicate temperatures by day reach 20.9°C (69.7°F) on average falling to 15.8°C (60.5°F) overnight.
  • In spring time temperatures climb reaching 25.5°C (78°F) generally in the afternoon with overnight lows of 19.9°C (67.8°F).
  • During summer average high temperatures are 30.8°C (87.5°F) and average low temperatures are 25.2°C (77.4°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 27.5°C (81.4°F) during the day and lows of 22.2°C (71.9°F) generally shortly after sunrise.
  • Total annual Precipitation averages 2342.7 mm (92.2 inches) which is equivalent to 2342.7 Litres/m² (57.46 Gallons/ft²).
  • Were you to burrow down through the centre of the Earth from Iriomotejima you would pop up nearest to the climate station at Villarrica, Paraguay where you would find a Humid subtropical climate (Subtropical moist forest biome).

Iriomotejima Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) 20 (68) 21 (69) 23 (73) 26 (78) 28 (83) 30 (86) 32 (89) 31 (88) 30 (86) 28 (82) 25 (76) 22 (71) 26 (79)
 
Average Temperature °C ( °F) 18 (64) 18 (65) 20 (68) 23 (73) 25 (77) 27 (81) 28 (83) 28 (82) 27 (81) 25 (77) 22 (72) 19 (66) 23 (74)
 
Average Min Temperature °C ( °F) 15 (59) 16 (60) 17 (63) 20 (68) 23 (73) 25 (77) 26 (78) 25 (77) 24 (76) 22 (72) 20 (68) 17 (62) 21 (69)
 
Average Precipitation mm (in) 172 (7) 161 (6) 153 (6) 164 (6) 211 (8) 196 (8) 193 (8) 244 (10) 248 (10) 223 (9) 224 (9) 153 (6) 2343 (92)
Average Daylight Hours/ Day 10h 47' 11h 17' 11h 58' 12h 42' 13h 18' 13h 36' 13h 28' 12h 57' 12h 15' 11h 31' 10h 55' 10h 38' 12h 00'
Sun altitude at solar noon on the 21st day (°). 45.6 54.8 65.7 77.4 85.6 88.9 85.8 77.7 66.3 54.7 45.6 42.1 65.8

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