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Jamestown vs Collooney, Sligo Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Collooney, Sligo, Ireland is approximately 7,799 km or 4,846 mi.
  • To reach Jamestown in this distance one would set out from Collooney, Sligo bearing 177.2° or S and follow the great circles arc to approach Jamestown bearing 178.3° or S .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Collooney, Sligo has a marine west coast climate (Cfb).
  • The annual mean temperature is 12.4 °C (22.4°F) warmer.
  • Average monthly temperatures vary by 6.5 °C (11.7°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to barely hyperoceanic.
  • Total annual precipitation averages 994 mm (39.1 in) less which is equivalent to 994 l/m² (24.4 US gal/ft²) or 9,940,000 l/ha (1,062,652 US gal/ac) less. About 1/8 as much.
  • The altitude of the sun at midday is overall 34.7° higher in Jamestown than in Collooney, Sligo.
  • Relative humidity levels are 17.7% lower.
  • The mean dew point temperature is 8.6°C (15.5°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +19 (+34) +19 (+34) +17 (+31) +14 (+25) +8 (+14) +5 (+9) +4 (+7) +3 (+5) +5 (+9) +9 (+16) +13 (+23) +16 (+29) +11 (+20)
average temperature iconAverage Temperature °C ( °F) +20 (+35) +20 (+35) +17 (+31) +16 (+28) +11 (+20) +8 (+14) +6 (+10) +5 (+9) +7 (+13) +10 (+18) +15 (+26) +17 (+31) +12 (+22)
minimum temperature iconAverage Min Temperature °C ( °F) +20 (+36) +20 (+36) +19 (+34) +17 (+31) +13 (+23) +9 (+16) +6 (+11) +6 (+11) +8 (+14) +12 (+22) +15 (+27) +17 (+31) +14 (+24)
rainfall iconAverage Precipitation mm (in) -102 (-4) -66 (-3) -48 (-2) -55 (-2) -50 (-2) -66 (-3) -72 (-3) -88 (-3) -102 (-4) -108 (-4) -111 (-4) -126 (-5) -994 (-39)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -15 ( -48) -11 ( -39) -9 ( -29) -11 ( -37) -10 ( -32) -9 ( -30) -10 ( -32) -13 ( -42) -15 ( -50) -16 ( -52) -17 ( -57) -19 ( -61)   -155 ( -42)
daylight iconAverage Daylight Hours & Minutes/ Day +5h 05' +3h 06' +0h 33' -2h 08' -4h 29' -5h 44' -5h 10' -3h 06' -0h 29' +2h 12' +4h 32' +5h 45'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +69.2 +58.3 +37.6 +14.4 -2.2 -8.6 -2.6 +14.1 +37 +58.6 +68.8 +70   +34.7
relative humidity iconRelative Humidity (%) -29 -26 -22 -17 -8 -10 -11 -10 -14 -19 -20 -27   -17.8
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +13.2 (+24) +13.8 (+25) +12 (+22) +11.4 (+21) +9 (+16) +5.3 (+10) +3.2 (+6) +2.9 (+5) +4.2 (+8) +6.2 (+11) +10.5 (+19) +11.3 (+20) +8.6 (+15)

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Jamestown vs Collooney, Sligo Discussion

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