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Jamestown vs Rolle Pass Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Rolle Pass, Italy is approximately 7,138 km or 4,435 mi.
  • To reach Jamestown in this distance one would set out from Rolle Pass bearing 198.7° or SSW and follow the great circles arc to approach Jamestown bearing 193.3° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Rolle Pass has a boreal subarctic climate with no dry season (Dfc).
  • The mean annual temperature is 19.3 °C (34.8°F) warmer.
  • Average monthly temperatures vary by 11.3 °C (20.3°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 920 mm (36.2 in) less which is equivalent to 920 l/m² (22.58 US gal/ft²) or 9,200,000 l/ha (983,541 US gal/ac) less. About 1/8 as much.
  • The altitude of the sun at midday is overall 26.8° higher in Jamestown than in Rolle Pass.
  • Relative humidity levels are 1.2% lower.
  • The mean dew point temperature is 17.9°C (32.3°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +29 (+51) +29 (+51) +28 (+50) +24 (+43) +16 (+29) +11 (+20) +7 (+13) +8 (+14) +10 (+18) +15 (+27) +21 (+38) +25 (+45) +18 (+33)
average temperature iconAverage Temperature °C ( °F) +29 (+52) +29 (+52) +27 (+49) +24 (+43) +17 (+31) +13 (+23) +9 (+17) +10 (+17) +12 (+21) +15 (+28) +22 (+39) +26 (+46) +19 (+35)
minimum temperature iconAverage Min Temperature °C ( °F) +29 (+52) +29 (+52) +28 (+51) +24 (+44) +18 (+32) +14 (+24) +11 (+19) +11 (+19) +12 (+22) +17 (+30) +21 (+39) +25 (+46) +20 (+36)
rainfall iconAverage Precipitation mm (in) -35 (-1) -33 (-1) -34 (-1) -54 (-2) -91 (-4) -115 (-5) -115 (-5) -130 (-5) -102 (-4) -91 (-4) -84 (-3) -36 (-1) -920 (-36)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 58' +2h 27' +0h 26' -1h 41' -3h 30' -4h 27' -4h 02' -2h 27' -0h 23' +1h 45' +3h 33' +4h 27'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +61.4 +50.4 +29.7 +6.6 -10 -16.4 -10.5 +6.2 +29.1 +50.7 +61 +62.2   +26.8
relative humidity iconRelative Humidity (%) +0 -3 -6 -12 -5 -3 +1 +0 +2 +1 +7 +3   -1.3
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +26.5 (+48) +26.2 (+47) +23.9 (+43) +20.2 (+36) +15.8 (+28) +11.7 (+21) +9.3 (+17) +9.3 (+17) +11.7 (+21) +14.9 (+27) +21.6 (+39) +24.2 (+44) +17.9 (+32)

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Jamestown vs Rolle Pass Discussion

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