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Jamestown vs Ancona Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Ancona, Italy is approximately 6,903 km or 4,290 mi.
  • To reach Jamestown in this distance one would set out from Ancona bearing 201° or SSW and follow the great circles arc to approach Jamestown bearing 195.7° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Ancona has a Mediterranean hot climate (Csa).
  • The annual mean temperature is 7 °C (12.7°F) warmer.
  • Average monthly temperatures vary by 14 °C (25.2°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to semicontinental.
  • Total annual precipitation averages 497 mm (19.6 in) less which is equivalent to 497 l/m (12.2 US gal/ft) or 4,970,000 l/ha (531,326 US gal/ac) less. About 2/9 as much.
  • The altitude of the sun at midday is overall 24.1° higher in Jamestown than in Ancona.
  • Relative humidity levels are 0.7% higher.
  • The mean dew point temperature is 7°C (12.6°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +19 (+34) +17 (+31) +15 (+27) +11 (+20) +4 (+7) -1 (-2) -5 (-9) -5 (-9) -1 (-2) +4 (+7) +9 (+16) +14 (+25) +7 (+12)
average temperature iconAverage Temperature °C ( °F) +19 (+33) +17 (+31) +14 (+25) +11 (+19) +5 (+9) 0 (0) -4 (-6) -4 (-6) -1 (-1) +4 (+6) +9 (+16) +15 (+26) +7 (+13)
minimum temperature iconAverage Min Temperature °C ( °F) +18 (+32) +17 (+31) +15 (+27) +10 (+18) +5 (+9) 0 (0) -3 (-5) -3 (-5) -1 (-2) +4 (+7) +8 (+14) +14 (+25) +7 (+13)
rainfall iconAverage Precipitation mm (in) -58 (-2) -31 (-1) -25 (-1) -47 (-2) -30 (-1) -33 (-1) +6 (+0) -21 (-1) -54 (-2) -96 (-4) -62 (-2) -46 (-2) -497 (-20)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -5 ( -16) -4 ( -14) -4 ( -13) -6 ( -20) -5 ( -16) -2 ( -7) +3 (+10) -2 ( -6) -5 ( -17) -10 ( -32) -10 ( -33) -8 ( -26)   -58 ( -16)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 40' +2h 16' +0h 25' -1h 34' -3h 15' -4h 07' -3h 44' -2h 16' -0h 21' +1h 37' +3h 17' +4h 07'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day () +58.7 +47.8 +27 +3.9 -12.7 -19.1 -13.2 +3.6 +26.4 +48.1 +58.3 +59.5   +24.1
relative humidity iconRelative Humidity (%) -16 -11 -7 -3 +6 +10 +17 +17 +11 +0 -4 -12   +0.7
dewpoint temperature iconAverage Dew Point Temperature C & (F) +14.3 (+26) +13.9 (+25) +11.8 (+21) +9.3 (+17) +6.1 (+11) +2.4 (+4) +0.7 (+1) +0.6 (+1) +1.9 (+3) +3.4 (+6) +7.9 (+14) +11.4 (+21) +7 (+13)

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