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Port-Au-Prince vs Vientiane Climate & Distance Between

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  • The distance between Port-Au-Prince, Haiti and Vientiane, Laos is approximately 15,937 km or 9,903 mi.
  • To reach Port-Au-Prince in this distance one would set out from Vientiane bearing 351.9° or N and follow the great circles arc to approach Port-Au-Prince bearing 188.1° or S .
  • Both have a tropical wet and dry/ savanna climate with dry winters (Aw).
  • Port-Au-Prince is in or near the subtropical dry forest biome whereas Vientiane is in or near the subtropical moist forest biome.
  • The annual mean temperature is 2.2 °C (4°F) warmer.
  • Average monthly temperatures vary by 3.3 °C (5.9°F) less in Port-Au-Prince. The continentality subtype is truly hyperoceanic for both.
  • Total annual precipitation averages 295.7 mm (11.6 in) less which is equivalent to 295.7 l/m² (7.26 US gal/ft²) or 2,957,000 l/ha (316,123 US gal/ac) less. About 5/6 as much.
  • There are 695 more hours of sunlight per year in Port-Au-Prince. In whichever way circa 1h 54' more per day or about 1 2/7 as many.
  • The altitude of the sun at midday is overall 0.2° lower in Port-Au-Prince than in Vientiane.
  • Relative humidity levels are 26% lower.
  • The mean dew point temperature is 4.7°C (8.5°F) lower.

Climate Comparison Table

The table shows values for Port-Au-Prince relative to Vientiane. You can also view this comparison the other way around from the perspective of Vientiane vs Port-Au-Prince.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +8 (+14) +7 (+12) +5 (+9) 4 (+7) +4 (+8) +7 (+12) +7 (+13) +7 (+13) +7 (+12) +6 (+11) +8 (+15) +9 (+16) +7 (+12)
average temperature iconAverage Temperature °C ( °F) +5 (+10) +3 (+5) +0 (+1) -1 (-1) +0 (+1) +2 (+3) +3 (+5) +2 (+4) +2 (+4) +2 (+4) +3 (+6) +5 (+9) +2 (+4)
minimum temperature iconAverage Min Temperature °C ( °F) +7 (+12) +3 (+6) +1 (+1) -1 (-2) -2 (-3) -1 (-2) +0 (+0) -1 (-1) 0 (0) +1 (+2) +4 (+7) +5 (+9) +1 (+2)
rainfall iconAverage Precipitation mm (in) +27 (+1) +46 (+2) +50 (+2) +75 (+3) -24 (-1) -171 (-7) -192 (-8) -178 (-7) -120 (-5) +83 (+3) +76 (+3) +30 (+1) -296 (-12)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +1 (+3) +3 (+11) +3 (+10) +2 (+7) -3 ( -10) -11 ( -37) -10 ( -32) -8 ( -26) -3 ( -10) +6 (+19) +5 (+17) +3 (+10)   -12 ( -3)
sunshine iconAverage Sunlight Hours/ Day +1h 15' +1h 39' +2h 05' +1h 46' +1h 48' +3h 56' +3h 56' +4h 17' +2h 24' +0h 11' -0h 14' -0h 17'   +1h 54'
daylight iconAverage Daylight Hours & Minutes/ Day -0h 01' -0h 00' -0h 00' +0h 00' +0h 01' +0h 01' +0h 01' +0h 00' +0h 00' -0h 00' -0h 01' -0h 01'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) -0.3 -0.3 -0.3 -0.3 +0.4 +0.4 +0.4 -0.6 -0.6 -0.6 -0.5 -0.4   -0.2
relative humidity iconRelative Humidity (%) -26 -24 -21 -20 -24 -32 -39 -35 -29 -22 -18 -22   -26
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) -2.3 (-4) -4.4 (-8) -5.7 (-10) -6 (-11) -5.7 (-10) -6.3 (-11) -8 (-14) -6.6 (-12) -5.1 (-9) -3.4 (-6) -1.5 (-3) -1.4 (-3) -4.7 (-8)

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