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Jamestown vs Tessalit Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Tessalit, Mali is approximately 4,082 km or 2,537 mi.
  • To reach Jamestown in this distance one would set out from Tessalit bearing 190.8° or S and follow the great circles arc to approach Jamestown bearing 190.6° or S .
  • Both have a subtropical hot desert climate (BWh).
  • The average annual temperature is 6.9 °C (12.3°F) cooler.
  • Average monthly temperatures vary by 12.1 °C (21.8°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 68.5 mm (2.7 in) more which is equivalent to 68.5 l/m² (1.68 US gal/ft²) or 685,000 l/ha (73,231 US gal/ac) more. About 2 as much.
  • The altitude of the sun at midday is overall 1.5° higher in Jamestown than in Tessalit.
  • Relative humidity levels are 52.3% higher.
  • The mean dew point temperature is 14.5°C (26.1°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +0 (+0) +-3 (-5) -5 (-10) -10 (-18) -17 (-30) -20 (-35) -20 (-35) -19 (-33) -18 (-33) -14 (-26) -9 (-16) +-3 (-6) -11 (-21)
average temperature iconAverage Temperature °C ( °F) +4 (+8) +2 (+3) -2 (-3) -5 (-10) -11 (-20) -15 (-27) -15 (-27) -14 (-25) -14 (-24) -10 (-19) -4 (-7) +2 (+3) -7 (-12)
minimum temperature iconAverage Min Temperature °C ( °F) +8 (+15) +6 (+11) +4 (+7) -1 (-1) -7 (-12) -11 (-20) -11 (-20) -10 (-18) -10 (-17) -6 (-10) 0 (0) +6 (+10) -3 (-5)
rainfall iconAverage Precipitation mm (in) +8 (+0) +10 (+0) +19 (+1) +10 (+0) +13 (+1) +12 (+0) +16 (+1) -16 (-1) -7 (0) +1 (+0) 0 (0) +3 (+0) +69 (+3)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +3.5 (+11) +3.5 (+12) +4.5 (+15) +2.5 (+8) +3 (+10) +4 (+13) +4 (+13) -4 ( -13) -2 ( -7) +0.5 (+2) -0.5 ( -2) +0.5 (+2)   +19.5 (+5)
daylight iconAverage Daylight Hours & Minutes/ Day +1h 54' +1h 11' +0h 13' -0h 49' -1h 41' -2h 07' -1h 56' -1h 11' -0h 11' +0h 51' +1h 43' +2h 07'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +35.3 +24.5 +3.7 -19.5 -35.3 -36 -34.9 -19.8 +3 +24.8 +35 +36.1   +1.5
relative humidity iconRelative Humidity (%) +46 +52 +51 +53 +58 +56 +52 +47 +54 +55 +56 +47   +52.3
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +21.8 (+39) +23.5 (+42) +21.1 (+38) +19.6 (+35) +14.5 (+26) +9.7 (+17) +5.2 (+9) +2.3 (+4) +7.2 (+13) +12.1 (+22) +18 (+32) +19.3 (+35) +14.5 (+26)

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