Vs > Onslow, Western Australia
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Jamestown vs Onslow, Western Australia Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Onslow, Western Australia, Australia is approximately 12,332 km or 7,663 mi.
  • To reach Jamestown in this distance one would set out from Onslow, Western Australia bearing 242.1° or WSW and follow the great circles arc to approach Jamestown bearing 301.3° or WNW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Onslow, Western Australia has a subtropical hot steppe climate (BSh).
  • The mean temperature is 3.4 °C (6°F) cooler.
  • Average monthly temperatures vary by 7.5 °C (13.5°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 293.6 mm (11.6 in) less which is equivalent to 293.6 l/m² (7.21 US gal/ft²) or 2,936,000 l/ha (313,878 US gal/ac) less. About 1/3 as much.
  • The altitude of the sun at midday is overall 3.5° higher in Jamestown than in Onslow, Western Australia.
  • Relative humidity levels are 19.1% higher.
  • The mean dew point temperature is 1.8°C (3.3°F) higher.

Climate Comparison Table

The table shows values for Jamestown relative to Onslow, Western Australia. You can also view this comparison the other way around from the perspective of Onslow, Western Australia vs Jamestown.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) -9 (-17) -9 (-16) -8 (-14) -6 (-11) -5 (-9) +-3 (-5) +-3 (-6) +-4 (-8) -8 (-14) -10 (-17) -11 (-20) -12 (-22) -7 (-13)
average temperature iconAverage Temperature °C ( °F) -6 (-11) -6 (-12) -6 (-10) -3 (-5) -1 (-2) +1 (+2) +1 (+2) +0 (+1) -2 (-4) -5 (-9) -6 (-11) -7 (-13) -3 (-6)
minimum temperature iconAverage Min Temperature °C ( °F) -3 (-6) -4 (-7) -2 (-3) +0 (+1) +2 (+4) +4 (+6) +4 (+8) +4 (+7) +2 (+4) +0 (+1) -2 (-3) -3 (-6) +0 (+0)
rainfall iconAverage Precipitation mm (in) -60 (-2) -85 (-3) -71 (-3) -8 (0) -43 (-2) -39 (-2) +16 (+1) -5 (0) +2 (+0) +1 (+0) -3 (0) +1 (+0) -294 (-12)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +2 (+6) +1 (+4) +2 (+6) +2 (+7) +1 (+3) +3 (+10) +5 (+16) +1 (+3) +2 (+7) +1 (+3) -1 ( -3) 0 ( 0)   +19 (+5)
daylight iconAverage Daylight Hours & Minutes/ Day -0h 19' -0h 12' -0h 02' +0h 08' +0h 17' +0h 22' +0h 20' +0h 12' +0h 01' -0h 08' -0h 17' -0h 22'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) -1.7 +5.1 +5.6 +5.7 +5.7 +5.8 +5.8 +5.8 +5.9 +5.2 -1.5 -5.7   +3.5
relative humidity iconRelative Humidity (%) +11 +11 +11 +15 +20 +18 +17 +29 +30 +28 +24 +15   +19.1
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) -2.8 (-5) -3.1 (-6) -2.3 (-4) +1.4 (+3) +4.2 (+8) +5.3 (+10) +4.9 (+9) +7.6 (+14) +5.6 (+10) +2.8 (+5) +0.8 (+1) -2.5 (-5) +1.8 (+3)

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Jamestown vs Onslow, Western Australia Discussion

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