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Niamey vs Vientiane Climate & Distance Between

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  • The distance between Niamey, Niger and Vientiane, Laos is approximately 10,615 km or 6,596 mi.
  • To reach Niamey in this distance one would set out from Vientiane bearing 286.1° or WNW and follow the great circles arc to approach Niamey bearing 250° or WSW .
  • Niamey has a subtropical hot steppe climate (BSh) whereas Vientiane has a tropical wet and dry/ savanna climate with dry winters (Aw).
  • Niamey is in or near the tropical very dry forest biome whereas Vientiane is in or near the subtropical moist forest biome.
  • The average temperature is 3.4 °C (6.2°F) warmer.
  • Average monthly temperatures vary by 2.9 °C (5.2°F) more in Niamey. The continentality subtype is barely hyperoceanic as opposed to truly hyperoceanic.
  • Total annual precipitation averages 1107.9 mm (43.6 in) less which is equivalent to 1107.9 l/m² (27.19 US gal/ft²) or 11,079,000 l/ha (1,184,419 US gal/ac) less. About 1/3 as much.
  • There are 662 more hours of sunlight per year in Niamey. In whichever way circa 1h 49' more per day or about 1 2/7 as many.
  • The altitude of the sun at midday is overall 2.1° higher in Niamey than in Vientiane.
  • Relative humidity levels are 42.9% lower.
  • The mean dew point temperature is 12.7°C (22.8°F) lower.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +9 (+17) +12 (+21) +12 (+22) +12 (+21) +12 (+21) +9 (+16) +6 (+11) +5 (+10) +7 (+12) +11 (+20) +12 (+22) +11 (+20) +10 (+18)
average temperature iconAverage Temperature °C ( °F) +3 (+5) +3 (+6) +4 (+8) +5 (+10) +6 (+11) +4 (+7) +2 (+3) +1 (+1) +2 (+4) +4 (+8) +4 (+6) +3 (+6) +3 (+6)
minimum temperature iconAverage Min Temperature °C ( °F) 0 (-1) +0 (+0) +1 (+3) +3 (+5) +3 (+6) +1 (+1) -1 (-1) -2 (-3) -1 (-1) +1 (+2) +0 (+1) 0 (-1) +1 (+1)
rainfall iconAverage Precipitation mm (in) -6 (0) -12 (0) -32 (-1) -79 (-3) -220 (-9) -204 (-8) -111 (-4) -152 (-6) -203 (-8) -78 (-3) -9 (0) -3 (0) -1108 (-44)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -2 ( -6) -2 ( -7) -3.5 ( -11) -8 ( -27) -12 ( -39) -13 ( -43) -8 ( -26) -6 ( -19) -8 ( -27) -4 ( -13) -2 ( -7) 0 ( 0)   -68.5 ( -19)
sunshine iconAverage Sunlight Hours/ Day +1h 19' +2h 01' +1h 36' +1h 04' +2h 00' +4h 22' +2h 34' +1h 44' +1h 48' +1h 17' +1h 18' +0h 42'   +1h 49'
daylight iconAverage Daylight Hours & Minutes/ Day +0h 14' +0h 09' +0h 01' -0h 06' -0h 13' -0h 16' -0h 15' -0h 09' -0h 01' +0h 06' +0h 13' +0h 16'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +4.6 +4.5 +4.5 +4.5 -4.4 -4.5 -4.2 +4.3 +4.3 +4.4 +4.4 +4.5   +2.1
relative humidity iconRelative Humidity (%) -58 -56 -55 -51 -43 -38 -26 -16 -23 -38 -55 -56   -42.9
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) -22.1 (-40) -21.7 (-39) -22.4 (-40) -16.1 (-29) -7.1 (-13) -6.5 (-12) -4.8 (-9) -2.9 (-5) -3.4 (-6) -6.7 (-12) -18.3 (-33) -19.8 (-36) -12.7 (-23)

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Niamey vs Vientiane Discussion

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