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Jamestown vs Ustica Island Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Ustica Island, Italy is approximately 6,385 km or 3,967 mi.
  • To reach Jamestown in this distance one would set out from Ustica Island bearing 201.7° or SSW and follow the great circles arc to approach Jamestown bearing 197.5° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Ustica Island has a Mediterranean hot climate (Csa).
  • The average annual temperature is 4.9 °C (8.9°F) warmer.
  • Average monthly temperatures vary by 10.2 °C (18.4°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 311.5 mm (12.3 in) less which is equivalent to 311.5 l/m² (7.64 US gal/ft²) or 3,115,000 l/ha (333,014 US gal/ac) less. About 1/3 as much.
  • The altitude of the sun at midday is overall 19.2° higher in Jamestown than in Ustica Island.
  • Relative humidity levels are 7.3% lower.
  • The mean dew point temperature is 3.2°C (5.7°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +14 (+26) +14 (+26) +14 (+26) +11 (+20) +4 (+7) -1 (-2) -6 (-10) -6 (-10) -3 (-6) +2 (+3) +6 (+10) +10 (+18) +5 (+9)
average temperature iconAverage Temperature °C ( °F) +13 (+24) +13 (+24) +12 (+22) +10 (+19) +5 (+9) 0 (0) -4 (-8) -5 (-9) -3 (-5) +1 (+2) +6 (+10) +10 (+18) +5 (+9)
minimum temperature iconAverage Min Temperature °C ( °F) +12 (+22) +12 (+22) +13 (+23) +10 (+18) +5 (+8) 0 (0) -4 (-8) -5 (-9) -3 (-5) +1 (+2) +5 (+9) +9 (+16) +5 (+8)
rainfall iconAverage Precipitation mm (in) -40 (-2) -35 (-1) -15 (-1) -25 (-1) 0 (0) +9 (+0) +29 (+1) -1 (0) -32 (-1) -65 (-3) -71 (-3) -66 (-3) -312 (-12)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 12' +1h 59' +0h 21' -1h 22' -2h 50' -3h 35' -3h 15' -1h 59' -0h 18' +1h 25' +2h 52' +3h 35'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +53.8 +42.9 +22.1 -1 -17.6 -24 -18.1 -1.3 +21.5 +43.2 +53.4 +54.6   +19.2
relative humidity iconRelative Humidity (%) -16 -13 -15 -12 -4 -3 +2 +1 -2 -6 -6 -14   -7.3
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +9.2 (+17) +10 (+18) +8.8 (+16) +7.3 (+13) +3.7 (+7) -0.6 (-1) -3.8 (-7) -4.5 (-8) -3 (-5) -0.2 (0) +4.4 (+8) +6.5 (+12) +3.2 (+6)

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Jamestown vs Ustica Island Discussion

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