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Vs > Jamestown
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Guidonia vs Jamestown Climate & Distance Between

Saint Helena flag
  • The distance between Guidonia, Italy and Jamestown, Saint Helena is approximately 6,712 km or 4,171 mi.
  • To reach Guidonia in this distance one would set out from Jamestown bearing 15.7° or NNE and follow the great circles arc to approach Guidonia bearing 20.5° or NNE .
  • Guidonia has a Mediterranean hot climate (Csa) whereas Jamestown has a subtropical hot desert climate (BWh).
  • The mean temperature is 6.7 °C (12.1°F) cooler.
  • Average monthly temperatures vary by 12.9 °C (23.2°F) more in Guidonia. The continentality subtype is truly oceanic as opposed to truly hyperoceanic.
  • Total annual precipitation averages 662.2 mm (26.1 in) more which is equivalent to 662.2 l/m² (16.25 US gal/ft²) or 6,622,000 l/ha (707,936 US gal/ac) more. About 5 5/6 as much.
  • The altitude of the sun at midday is overall 22.5° lower in Guidonia than in Jamestown.
  • Relative humidity levels are 2.1% higher.
  • The mean dew point temperature is 6°C (10.8°F) lower.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) -15 (-26) -13 (-24) -12 (-22) -8 (-14) 0 (-1) 5 (+9) +10 (+17) +9 (+17) +6 (+10) -1 (-1) -6 (-11) -11 (-19) -3 (-5)
average temperature iconAverage Temperature °C ( °F) -17 (-30) -16 (-28) -14 (-25) -11 (-20) -5 (-9) 0 (0) +4 (+7) +4 (+7) +1 (+2) -4 (-7) -9 (-17) -14 (-25) -7 (-12)
minimum temperature iconAverage Min Temperature °C ( °F) -19 (-34) -18 (-33) -18 (-32) -14 (-25) -9 (-15) -4 (-7) -1 (-1) 0 (-1) -3 (-5) -8 (-14) -12 (-21) -16 (-28) -10 (-18)
rainfall iconAverage Precipitation mm (in) +67 (+3) +64 (+3) +41 (+2) +57 (+2) +39 (+2) +26 (+1) -5 (0) +35 (+1) +66 (+3) +87 (+3) +103 (+4) +84 (+3) +662 (+26)
daylight iconAverage Daylight Hours & Minutes/ Day -3h 30' -2h 10' -0h 23' +1h 30' +3h 06' +3h 56' +3h 34' +2h 10' +0h 20' -1h 33' -3h 09' -3h 56'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) -57.1 -46.2 -25.4 -2.3 +14.3 +20.7 +14.8 -1.9 -24.8 -46.4 -56.7 -57.9   -22.5
relative humidity iconRelative Humidity (%) +13 +8 +7 +7 -1 -4 -9 -10 -6 +2 +6 +12   +2.1
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) -13.3 (-24) -13.2 (-24) -11.6 (-21) -8.9 (-16) -5 (-9) -1 (-2) +1.8 (+3) +1.6 (+3) -0.4 (-1) -3.1 (-6) -8 (-14) -10.6 (-19) -6 (-11)

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Guidonia vs Jamestown Discussion

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