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Jamestown vs Olbia/ Costa Smeralda Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Olbia/ Costa Smeralda, Italy is approximately 6,510 km or 4,046 mi.
  • To reach Jamestown in this distance one would set out from Olbia/ Costa Smeralda bearing 197.2° 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 Olbia/ Costa Smeralda has a Mediterranean hot climate (Csa).
  • The annual average temperature is 5.6 °C (10.1°F) warmer.
  • Average monthly temperatures vary by 10.8 °C (19.4°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 445.4 mm (17.5 in) less which is equivalent to 445.4 l/m² (10.93 US gal/ft²) or 4,454,000 l/ha (476,162 US gal/ac) less. About 1/4 as much.
  • The altitude of the sun at midday is overall 21.4° higher in Jamestown than in Olbia/ Costa Smeralda.
  • Relative humidity levels are 3.5% higher.
  • The mean dew point temperature is 6.1°C (11°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +12 (+22) +12 (+21) +12 (+21) +9 (+15) +1 (+2) -5 (-8) -9 (-15) -9 (-16) -5 (-9) +1 (+1) +5 (+9) +9 (+15) +3 (+5)
average temperature iconAverage Temperature °C ( °F) +14 (+25) +13 (+24) +13 (+23) +11 (+19) +5 (+9) -1 (-1) -4 (-8) -5 (-8) -1 (-3) +3 (+5) +8 (+15) +11 (+20) +6 (+10)
minimum temperature iconAverage Min Temperature °C ( °F) +16 (+28) +15 (+27) +16 (+28) +13 (+23) +8 (+14) +3 (+5) -1 (-2) -2 (-3) +1 (+2) +6 (+11) +10 (+18) +13 (+23) +8 (+15)
rainfall iconAverage Precipitation mm (in) -39 (-2) -63 (-2) -43 (-2) -46 (-2) -19 (-1) 0 (0) +27 (+1) -18 (-1) -36 (-1) -56 (-2) -56 (-2) -95 (-4) -445 (-18)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 24' +2h 06' +0h 23' -1h 27' -3h 01' -3h 48' -3h 27' -2h 07' -0h 20' +1h 30' +3h 03' +3h 48'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +56 +45.1 +24.3 +1.2 -15.4 -21.8 -15.9 +0.8 +23.7 +45.4 +55.6 +56.8   +21.4
relative humidity iconRelative Humidity (%) -7 -4 -1 -1 +6 +14 +14 +13 +8 +7 +0 -7   +3.5
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +11.8 (+21) +11.9 (+21) +11.7 (+21) +9.9 (+18) +6.1 (+11) +2.9 (+5) -0.9 (-2) -1.5 (-3) +0.3 (+1) +4.4 (+8) +7.8 (+14) +9.2 (+17) +6.1 (+11)

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