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Jamestown vs Dhahran Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Dhahran, Saudi Arabia is approximately 7,646 km or 4,751 mi.
  • To reach Jamestown in this distance one would set out from Dhahran bearing 238.7° or WSW and follow the great circles arc to approach Jamestown bearing 232.8° or SW .
  • Both have a subtropical hot desert climate (BWh).
  • The mean annual temperature is 4 °C (7.3°F) cooler.
  • Average monthly temperatures vary by 15.7 °C (28.3°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to semicontinental.
  • Total annual precipitation averages 58 mm (2.3 in) more which is equivalent to 58 l/m² (1.42 US gal/ft²) or 580,000 l/ha (62,006 US gal/ac) more. About 1 3/4 as much.
  • The altitude of the sun at midday is overall 6.8° higher in Jamestown than in Dhahran.
  • Relative humidity levels are 14.9% higher.
  • The mean dew point temperature is 0.5°C (0.9°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +-2 (-4) +-1 (-2) +-7 (-13) -10 (-18) -19 (-34) -22 (-40) -23 (-41) -24 (-43) -22 (-40) -17 (-31) -10 (-18) +-4 (-7) -13 (-24)
average temperature iconAverage Temperature °C ( °F) +9 (+15) +7 (+13) +3 (+6) -1 (-2) -9 (-15) -12 (-22) -15 (-27) -14 (-26) -12 (-21) -8 (-14) -1 (-2) +5 (+9) -4 (-7)
minimum temperature iconAverage Min Temperature °C ( °F) +15 (+27) +13 (+23) +11 (+20) +6 (+11) -1 (-2) -6 (-11) -8 (-14) -9 (-16) -5 (-9) 0 (0) +7 (+13) +12 (+22) +3 (+5)
rainfall iconAverage Precipitation mm (in) -6 (0) -5 (0) 0 (0) -2 (0) +17 (+1) +18 (+1) +33 (+1) +10 (+0) +5 (+0) +1 (+0) -5 (0) -8 (0) +58 (+2)
daylight iconAverage Daylight Hours & Minutes/ Day +2h 16' +1h 25' +0h 15' -0h 59' -2h 01' -2h 32' -2h 18' -1h 25' -0h 13' +1h 01' +2h 03' +2h 32'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +41.4 +30.5 +9.8 -13.4 -30 -36.4 -30.4 -13.8 +9 +30.8 +41 +42.2   +6.8
relative humidity iconRelative Humidity (%) -10 -3 +4 +10 +29 +38 +38 +32 +22 +12 +8 -1   +14.9
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +5.8 (+10) +6.2 (+11) +4.2 (+8) +1.7 (+3) +0.1 (+0) +0.4 (+1) -2.7 (-5) -4.8 (-9) -5.7 (-10) -4.6 (-8) +0.6 (+1) +4.5 (+8) +0.5 (+1)

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Jamestown vs Dhahran Discussion

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