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Jamestown vs Helsinki Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Helsinki, Finland is approximately 8,887 km or 5,522 mi.
  • To reach Jamestown in this distance one would set out from Helsinki bearing 209.6° or SSW and follow the great circles arc to approach Jamestown bearing 194.8° or SSW .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Helsinki has a warm summer continental/ hemiboreal climate with no dry season (Dfb).
  • The mean temperature is 17 °C (30.6°F) warmer.
  • Average monthly temperatures vary by 20 °C (36°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to subcontinental.
  • Total annual precipitation averages 551 mm (21.7 in) less which is equivalent to 551 l/m² (13.52 US gal/ft²) or 5,510,000 l/ha (589,056 US gal/ac) less. About 1/5 as much.
  • The altitude of the sun at midday is overall 40.6° higher in Jamestown than in Helsinki.
  • Relative humidity levels are 10.3% lower.
  • The mean dew point temperature is 14.4°C (25.9°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +30 (+54) +31 (+56) +28 (+50) +21 (+38) +10 (+18) +4 (+7) +0 (0) +2 (+4) +7 (+13) +15 (+27) +20 (+36) +25 (+45) +16 (+29)
average temperature iconAverage Temperature °C ( °F) +30 (+54) +31 (+55) +28 (+50) +22 (+39) +13 (+23) +7 (+13) +3 (+5) +4 (+7) +9 (+15) +15 (+26) +20 (+36) +25 (+45) +17 (+31)
minimum temperature iconAverage Min Temperature °C ( °F) +30 (+54) +30 (+54) +29 (+52) +22 (+40) +15 (+27) +9 (+16) +4 (+7) +5 (+9) +9 (+16) +15 (+27) +19 (+34) +24 (+43) +18 (+32)
rainfall iconAverage Precipitation mm (in) -48 (-2) -32 (-1) -16 (-1) -34 (-1) -23 (-1) -33 (-1) -35 (-1) -62 (-2) -66 (-3) -71 (-3) -68 (-3) -63 (-2) -551 (-22)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -16 ( -52) -14 ( -50) -9 ( -29) -10 ( -33) -8 ( -26) -7 ( -23) -6 ( -19) -12 ( -39) -13 ( -43) -17 ( -55) -19 ( -63) -19 ( -61)   -150 ( -41)
daylight iconAverage Daylight Hours & Minutes/ Day +6h 25' +3h 49' +0h 41' -2h 36' -5h 35' -7h 19' -6h 31' -3h 49' -0h 35' +2h 42' +5h 40' +7h 19'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +75.2 +64.3 +43.6 +20.4 +3.8 -2.6 +3.3 +20.1 +42.9 +64.5 +74.8 +76   +40.6
relative humidity iconRelative Humidity (%) -26 -23 -14 -10 +8 +8 +4 -1 -10 -17 -17 -26   -10.3
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +23.8 (+43) +25 (+45) +23.2 (+42) +18.3 (+33) +14.1 (+25) +8.5 (+15) +3.2 (+6) +3.6 (+6) +6.3 (+11) +11 (+20) +16.3 (+29) +19.2 (+35) +14.4 (+26)

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