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Jamestown vs Rome Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Rome, Italy is approximately 6,701 km or 4,164 mi.
  • To reach Jamestown in this distance one would set out from Rome bearing 200.3° or SSW and follow the great circles arc to approach Jamestown bearing 195.5° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Rome has a Mediterranean hot climate (Csa).
  • The average annual temperature is 6.7 °C (12.1°F) warmer.
  • Average monthly temperatures vary by 13 °C (23.4°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 700.3 mm (27.6 in) less which is equivalent to 700.3 l/m² (17.19 US gal/ft²) or 7,003,000 l/ha (748,667 US gal/ac) less. About 1/6 as much.
  • The altitude of the sun at midday is overall 22.4° higher in Jamestown than in Rome.
  • Relative humidity levels are 3.9% lower.
  • The mean dew point temperature is 5.6°C (10.1°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +15 (+27) +13 (+24) +12 (+21) +8 (+14) +0 (+0) -5 (-8) -9 (-17) -9 (-16) -6 (-10) +0 (+1) +6 (+11) +11 (+20) +3 (+6)
average temperature iconAverage Temperature °C ( °F) +17 (+31) +16 (+28) +14 (+25) +11 (+20) +5 (+9) 0 (0) -4 (-7) -4 (-7) -1 (-2) +4 (+6) +10 (+17) +14 (+25) +7 (+12)
minimum temperature iconAverage Min Temperature °C ( °F) +19 (+34) +18 (+32) +18 (+32) +14 (+25) +8 (+15) +4 (+7) +0 (+1) +0 (+0) +3 (+5) +8 (+14) +12 (+21) +16 (+29) +10 (+18)
rainfall iconAverage Precipitation mm (in) -75 (-3) -66 (-3) -48 (-2) -58 (-2) -29 (-1) -23 (-1) +10 (+0) -26 (-1) -70 (-3) -106 (-4) -120 (-5) -90 (-4) -700 (-28)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -4 ( -13) -5 ( -18) -4 ( -13) -5 ( -17) -2 ( -6) +3 (+10) +5 (+16) +1 (+3) -4 ( -13) -8 ( -26) -10 ( -33) -9 ( -29)   -42 ( -12)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 30' +2h 10' +0h 23' -1h 30' -3h 06' -3h 55' -3h 33' -2h 10' -0h 20' +1h 33' +3h 08' +3h 55'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +57 +46.1 +25.4 +2.2 -14.4 -20.8 -14.8 +1.9 +24.7 +46.4 +56.7 +57.9   +22.4
relative humidity iconRelative Humidity (%) -16 -10 -8 -7 +0 +2 +6 +7 +4 -3 -7 -15   -3.9
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +12.9 (+23) +12.8 (+23) +11.3 (+20) +8.8 (+16) +4.5 (+8) +0.5 (+1) -2.5 (-5) -2.3 (-4) -0.1 (0) +2.8 (+5) +7.9 (+14) +10.4 (+19) +5.6 (+10)

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