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Jamestown vs Perth, Western Australia Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Perth, Western Australia, Australia is approximately 11,841 km or 7,358 mi.
  • To reach Jamestown in this distance one would set out from Perth, Western Australia bearing 238.6° or WSW and follow the great circles arc to approach Jamestown bearing 311.1° or NW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Perth, Western Australia has a Mediterranean hot climate (Csa).
  • The mean annual temperature is 3.6 °C (6.4°F) warmer.
  • Average monthly temperatures vary by 7.9 °C (14.2°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 639.8 mm (25.2 in) less which is equivalent to 639.8 l/m² (15.7 US gal/ft²) or 6,398,000 l/ha (683,989 US gal/ac) less. About 1/6 as much.
  • The altitude of the sun at midday is overall 13.2° higher in Jamestown than in Perth, Western Australia.
  • Relative humidity levels are 17.3% higher.
  • The mean dew point temperature is 7.8°C (14.1°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) -5 (-8) -5 (-9) +-2 (-3) +2 (+3) +3 (+5) +4 (+8) +4 (+8) +4 (+7) +2 (+4) +1 (+1) +-3 (-5) -5 (-9) +0 (+0)
average temperature iconAverage Temperature °C ( °F) 0 (-1) -1 (-1) +1 (+2) +5 (+9) +6 (+11) +7 (+13) +7 (+13) +7 (+12) +5 (+10) +4 (+6) +2 (+3) 0 (0) +4 (+6)
minimum temperature iconAverage Min Temperature °C ( °F) +4 (+7) +3 (+6) +6 (+11) +8 (+14) +9 (+15) +9 (+16) +9 (+16) +9 (+16) +8 (+14) +8 (+14) +5 (+9) +4 (+7) +7 (+12)
rainfall iconAverage Precipitation mm (in) -1 (0) -4 (0) +4 (+0) -37 (-1) -85 (-3) -150 (-6) -125 (-5) -101 (-4) -66 (-3) -44 (-2) -23 (-1) -6 (0) -640 (-25)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +1 (+3) +1 (+4) 0 ( 0) -5 ( -17) -11 ( -35) -11 ( -37) -11 ( -35) -16 ( -52) -13 ( -43) -11 ( -35) -7 ( -23) -4 ( -13)   -87 ( -24)
daylight iconAverage Daylight Hours & Minutes/ Day -1h 00' -0h 37' -0h 06' +0h 25' +0h 53' +1h 07' +1h 01' +0h 37' +0h 05' -0h 26' -0h 53' -1h 07'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +7.5 +15.2 +15.9 +15.9 +16 +16 +16 +16.1 +16.1 +15.2 +7.2 +1   +13.2
relative humidity iconRelative Humidity (%) +20 +22 +18 +17 +14 +9 +11 +16 +18 +18 +25 +19   +17.3
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +5.5 (+10) +5.6 (+10) +6.2 (+11) +9.2 (+17) +9 (+16) +8.7 (+16) +9.1 (+16) +10 (+18) +9.3 (+17) +7.7 (+14) +8.2 (+15) +5.2 (+9) +7.8 (+14)

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Jamestown vs Perth, Western Australia Discussion

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