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Jamestown vs Turku Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Turku, Finland is approximately 8,859 km or 5,505 mi.
  • To reach Jamestown in this distance one would set out from Turku bearing 207.3° or SSW and follow the great circles arc to approach Jamestown bearing 193.6° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Turku has a warm summer continental/ hemiboreal climate with no dry season (Dfb).
  • The average temperature is 17 °C (30.7°F) warmer.
  • Average monthly temperatures vary by 18.7 °C (33.7°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to subcontinental.
  • Total annual precipitation averages 524 mm (20.6 in) less which is equivalent to 524 l/m² (12.86 US gal/ft²) or 5,240,000 l/ha (560,191 US gal/ac) less. About 1/5 as much.
  • The altitude of the sun at midday is overall 41° higher in Jamestown than in Turku.
  • Relative humidity levels are 1.1% lower.
  • The mean dew point temperature is 16.2°C (29.1°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +30 (+54) +30 (+54) +27 (+49) +20 (+36) +10 (+18) +4 (+7) +0 (0) +1 (+2) +7 (+13) +14 (+25) +19 (+34) +24 (+43) +16 (+28)
average temperature iconAverage Temperature °C ( °F) +30 (+54) +30 (+54) +27 (+48) +21 (+38) +12 (+22) +6 (+11) +4 (+6) +5 (+9) +10 (+17) +14 (+26) +20 (+37) +26 (+46) +17 (+31)
minimum temperature iconAverage Min Temperature °C ( °F) +30 (+54) +31 (+56) +30 (+54) +23 (+41) +16 (+29) +10 (+18) +5 (+9) +6 (+11) +10 (+18) +16 (+29) +19 (+34) +24 (+43) +18 (+33)
rainfall iconAverage Precipitation mm (in) -37 (-1) -23 (-1) -14 (-1) -28 (-1) -17 (-1) -25 (-1) -45 (-2) -74 (-3) -67 (-3) -67 (-3) -71 (-3) -56 (-2) -524 (-21)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -15 ( -48) -10 ( -35) -6 ( -19) -9 ( -30) -6 ( -19) -5 ( -17) -5 ( -16) -11 ( -35) -13 ( -43) -16 ( -52) -18 ( -60) -18 ( -58)   -132 ( -36)
daylight iconAverage Daylight Hours & Minutes/ Day +6h 31' +3h 52' +0h 41' -2h 38' -5h 40' -7h 26' -6h 37' -3h 52' -0h 35' +2h 44' +5h 45' +7h 26'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +75.5 +64.6 +43.9 +20.8 +4.2 -2.2 +3.7 +20.4 +43.3 +64.9 +75.1 +76.3   +41
relative humidity iconRelative Humidity (%) -23 -15 -6 +1 +19 +15 +16 +14 +7 -5 -13 -23   -1.1
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +24.2 (+44) +25.8 (+46) +23.6 (+42) +19.8 (+36) +16 (+29) +9.3 (+17) +7 (+13) +7.6 (+14) +10.7 (+19) +12.8 (+23) +17.2 (+31) +20.2 (+36) +16.2 (+29)

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