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Jamestown vs Helwan Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Helwan, Egypt is approximately 6,457 km or 4,012 mi.
  • To reach Jamestown in this distance one would set out from Helwan bearing 223.1° or SW and follow the great circles arc to approach Jamestown bearing 218° or SW .
  • Both have a subtropical hot desert climate (BWh).
  • The annual mean temperature is 0.5 °C (1°F) warmer.
  • Average monthly temperatures vary by 10.7 °C (19.3°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 119 mm (4.7 in) more which is equivalent to 119 l/m² (2.92 US gal/ft²) or 1,190,000 l/ha (127,219 US gal/ac) more. About 7 3/5 as much.
  • The altitude of the sun at midday is overall 10.4° higher in Jamestown than in Helwan.
  • Relative humidity levels are 16.3% higher.
  • The mean dew point temperature is 4.7°C (8.5°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
average temperature iconAverage Temperature °C ( °F) +11 (+20) +10 (+17) +7 (+13) +3 (+5) -3 (-5) -6 (-11) -8 (-14) -8 (-14) -6 (-10) -3 (-6) +2 (+4) +8 (+14) +1 (+1)
rainfall iconAverage Precipitation mm (in) +3 (+0) +7 (+0) +18 (+1) +9 (+0) +18 (+1) +18 (+1) +33 (+1) +10 (+0) +5 (+0) +2 (+0) -2 (0) -2 (0) +119 (+5)
daylight iconAverage Daylight Hours & Minutes/ Day +2h 31' +1h 34' +0h 17' -1h 05' -2h 14' -2h 48' -2h 33' -1h 34' -0h 14' +1h 07' +2h 15' +2h 49'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +45 +34.1 +13.3 -9.8 -26.4 -32.9 -26.9 -10.2 +12.6 +34.4 +44.6 +45.8   +10.4
relative humidity iconRelative Humidity (%) +1 +8 +10 +22 +31 +27 +22 +20 +19 +17 +14 +4   +16.3
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +10.6 (+19) +10.9 (+20) +9.3 (+17) +8.7 (+16) +6.1 (+11) +1.5 (+3) -1.8 (-3) -2.4 (-4) -1 (-2) +1 (+2) +5.4 (+10) +8.1 (+15) +4.7 (+8)

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Jamestown vs Helwan Discussion

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