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Jamestown vs Sal Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Sal, Cape Verde is approximately 4,094 km or 2,544 mi.
  • To reach Jamestown in this distance one would set out from Sal bearing 151.6° or SSE and follow the great circles arc to approach Jamestown bearing 151.7° or SSE .
  • Both have a subtropical hot desert climate (BWh).
  • The annual mean temperature is 1.7 °C (3°F) cooler.
  • Average monthly temperatures vary by 1.5 °C (2.7°F) less in Jamestown. The continentality subtype is truly hyperoceanic for both.
  • Total annual precipitation averages 67.5 mm (2.7 in) more which is equivalent to 67.5 l/m² (1.66 US gal/ft²) or 675,000 l/ha (72,162 US gal/ac) more. About 2 as much.
  • The altitude of the sun at midday is overall 0.5° lower in Jamestown than in Sal.
  • Relative humidity levels are 3.5% lower.
  • The mean dew point temperature is 2.4°C (4.4°F) lower.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +3 (+5) +3 (+5) +4 (+7) +3 (+5) -1 (-2) -3 (-5) -5 (-9) -7 (-13) -7 (-13) -6 (-11) -4 (-7) -1 (-2) -2 (-3)
average temperature iconAverage Temperature °C ( °F) +3 (+5) +3 (+5) +2 (+4) +2 (+4) -1 (-1) -2 (-4) -5 (-8) -6 (-11) -7 (-12) -6 (-11) -4 (-6) -1 (-1) -2 (-3)
minimum temperature iconAverage Min Temperature °C ( °F) +2 (+4) +3 (+5) +4 (+7) +2 (+4) -1 (-2) -3 (-5) -5 (-9) -6 (-11) -7 (-13) -5 (-9) -4 (-7) -1 (-2) -2 (-3)
rainfall iconAverage Precipitation mm (in) +3 (+0) +6 (+0) +19 (+1) +10 (+0) +18 (+1) +18 (+1) +32 (+1) -4 (0) -29 (-1) -5 (0) -3 (0) +1 (+0) +68 (+3)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +3 (+10) +4 (+14) +5 (+16) +3 (+10) +4 (+13) +6 (+20) +7 (+23) +1 (+3) -2 ( -7) -1 ( -3) -1 ( -3) 0 ( 0)   +29 (+8)
daylight iconAverage Daylight Hours & Minutes/ Day +1h 42' +1h 04' +0h 11' -0h 44' -1h 31' -1h 54' -1h 44' -1h 04' -0h 10' +0h 45' +1h 32' +1h 54'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +31.9 +21 +0.2 -23 -32.5 -32.6 -32.4 -23.2 -0.4 +21.4 +31.6 +32.7   -0.5
relative humidity iconRelative Humidity (%) -7 -6 -7 -6 -1 -3 -1 +1 -2 -3 -1 -6   -3.5
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +0.8 (+1) +1.4 (+3) +0.7 (+1) +0.6 (+1) -0.7 (-1) -2.9 (-5) -4.7 (-8) -5.6 (-10) -6.8 (-12) -6.5 (-12) -3.5 (-6) -2.1 (-4) -2.4 (-4)

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