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Jamestown vs Fonni Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Fonni, Italy is approximately 6,420 km or 3,989 mi.
  • To reach Jamestown in this distance one would set out from Fonni bearing 197.1° or SSW and follow the great circles arc to approach Jamestown bearing 193.5° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Fonni has a Mediterranean warm climate (Csb).
  • The average temperature is 10.4 °C (18.7°F) warmer.
  • Average monthly temperatures vary by 13.1 °C (23.6°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 663.7 mm (26.1 in) less which is equivalent to 663.7 l/m² (16.29 US gal/ft²) or 6,637,000 l/ha (709,539 US gal/ac) less. About 1/6 as much.
  • The altitude of the sun at midday is overall 20.6° higher in Jamestown than in Fonni.
  • Relative humidity levels are 10.4% lower.
  • The mean dew point temperature is 8°C (14.4°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +20 (+37) +20 (+36) +19 (+34) +16 (+28) +8 (+14) +2 (+3) -4 (-7) -4 (-6) +0 (+1) +7 (+12) +12 (+22) +16 (+29) +9 (+17)
average temperature iconAverage Temperature °C ( °F) +20 (+36) +20 (+36) +18 (+33) +16 (+29) +10 (+17) +4 (+7) -1 (-2) -1 (-2) +2 (+4) +7 (+13) +13 (+23) +17 (+30) +10 (+19)
minimum temperature iconAverage Min Temperature °C ( °F) +20 (+35) +20 (+36) +20 (+35) +16 (+30) +11 (+19) +5 (+10) +1 (+1) +1 (+1) +3 (+6) +8 (+15) +13 (+23) +16 (+29) +11 (+20)
rainfall iconAverage Precipitation mm (in) -94 (-4) -83 (-3) -57 (-2) -71 (-3) -43 (-2) -13 (-1) +20 (+1) -6 (0) -44 (-2) -79 (-3) -97 (-4) -97 (-4) -664 (-26)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 20' +2h 04' +0h 22' -1h 25' -2h 57' -3h 43' -3h 23' -2h 04' -0h 19' +1h 28' +2h 59' +3h 43'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +55.2 +44.3 +23.5 +0.4 -16.2 -22.6 -16.7 +0.1 +22.9 +44.6 +54.8 +56   +20.6
relative humidity iconRelative Humidity (%) -23 -23 -19 -16 -9 -5 +10 +7 +0 -10 -16 -21   -10.4
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +14.6 (+26) +14.8 (+27) +13.8 (+25) +12 (+22) +7.5 (+14) +3 (+5) +1.2 (+2) +0.6 (+1) +2.2 (+4) +4.7 (+8) +9.5 (+17) +11.8 (+21) +8 (+14)

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Jamestown vs Fonni Discussion

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