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Jamestown vs Istrana Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Istrana, Italy is approximately 7,081 km or 4,400 mi.
  • To reach Jamestown in this distance one would set out from Istrana bearing 199.2° or SSW and follow the great circles arc to approach Jamestown bearing 193.8° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Istrana has a humid subtropical climate (Cfa).
  • The average annual temperature is 9 °C (16.2°F) warmer.
  • Average monthly temperatures vary by 16.6 °C (29.9°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to semicontinental.
  • Total annual precipitation averages 819.8 mm (32.3 in) less which is equivalent to 819.8 l/m² (20.12 US gal/ft²) or 8,198,000 l/ha (876,421 US gal/ac) less. About 1/7 as much.
  • The altitude of the sun at midday is overall 26.2° higher in Jamestown than in Istrana.
  • Relative humidity levels are 3.7% lower.
  • The mean dew point temperature is 7.9°C (14.1°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +20 (+37) +18 (+32) +15 (+27) +10 (+17) +2 (+3) +-3 (-6) -7 (-12) -6 (-11) +-3 (-5) +4 (+7) +11 (+19) +17 (+30) +6 (+12)
average temperature iconAverage Temperature °C ( °F) +22 (+39) +20 (+35) +16 (+29) +12 (+21) +5 (+9) +0 (+1) -3 (-5) -2 (-4) +1 (+2) +6 (+11) +13 (+24) +19 (+34) +9 (+16)
minimum temperature iconAverage Min Temperature °C ( °F) +23 (+41) +21 (+38) +19 (+34) +14 (+25) +8 (+14) +3 (+5) 0 (-1) +0 (+1) +4 (+6) +9 (+17) +15 (+26) +20 (+36) +11 (+20)
rainfall iconAverage Precipitation mm (in) -55 (-2) -52 (-2) -49 (-2) -72 (-3) -85 (-3) -91 (-4) -33 (-1) -78 (-3) -68 (-3) -80 (-3) -98 (-4) -58 (-2) -820 (-32)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 54' +2h 24' +0h 26' -1h 39' -3h 27' -4h 22' -3h 57' -2h 25' -0h 22' +1h 43' +3h 29' +4h 22'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +60.8 +49.8 +29.1 +6 -10.6 -17.1 -11.1 +5.6 +28.5 +50.1 +60.4 +61.6   +26.2
relative humidity iconRelative Humidity (%) -15 -9 -6 -7 +1 +0 +4 +6 +3 -3 -4 -14   -3.7
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +17.4 (+31) +16.7 (+30) +13.9 (+25) +9.7 (+17) +5.2 (+9) +0.4 (+1) -2 (-4) -1 (-2) +1.5 (+3) +5.3 (+10) +12 (+22) +15.1 (+27) +7.9 (+14)

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