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Jamestown vs Grajau Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Grajau, Brazil is approximately 4,579 km or 2,845 mi.
  • To reach Jamestown in this distance one would set out from Grajau bearing 107.6° or ESE and follow the great circles arc to approach Jamestown bearing 99.6° or E .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Grajau has a tropical wet and dry/ savanna climate with dry winters (Aw).
  • The average annual temperature is 3.6 °C (6.4°F) cooler.
  • Average monthly temperatures vary by 2.2 °C (4°F) more in Jamestown. The continentality subtype is truly hyperoceanic as opposed to extremely hyperoceanic.
  • Total annual precipitation averages 1150.6 mm (45.3 in) less which is equivalent to 1150.6 l/m² (28.24 US gal/ft²) or 11,506,000 l/ha (1,230,068 US gal/ac) less. About 1/9 as much.
  • The altitude of the sun at midday is overall 3.5° lower in Jamestown than in Grajau.
  • Relative humidity levels are 8.3% lower.
  • The mean dew point temperature is 5.2°C (9.4°F) lower.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) -4 (-7) -4 (-7) -3 (-5) -5 (-8) -8 (-14) -9 (-15) -11 (-21) -13 (-23) -13 (-23) -9 (-17) -10 (-17) -8 (-14) -8 (-14)
average temperature iconAverage Temperature °C ( °F) -1 (-2) -1 (-2) -1 (-2) -1 (-3) -3 (-6) -4 (-7) -5 (-8) -5 (-10) -6 (-10) -7 (-12) -5 (-9) -4 (-6) -4 (-6)
minimum temperature iconAverage Min Temperature °C ( °F) +0 (+1) 0 (0) +1 (+2) 0 (0) -1 (-1) +0 (+0) +0 (+0) +0 (+0) -2 (-4) -1 (-2) -3 (-5) -2 (-3) -1 (-1)
rainfall iconAverage Precipitation mm (in) -170 (-7) -209 (-8) -239 (-9) -173 (-7) -42 (-2) +4 (+0) +16 (+1) -4 (0) -22 (-1) -67 (-3) -108 (-4) -137 (-5) -1151 (-45)
daylight iconAverage Daylight Hours & Minutes/ Day +0h 32' +0h 20' +0h 03' -0h 13' -0h 28' -0h 35' -0h 32' -0h 20' -0h 03' +0h 14' +0h 28' +0h 35'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +9.5 -0.7 -9.9 -10 -10 -10.1 -10.2 -10.2 -10 -0.1 +9.3 +10.1   -3.5
relative humidity iconRelative Humidity (%) -21 -21 -21 -20 -10 -4 +2 +10 +8 +1 -6 -18   -8.3
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) -5.7 (-10) -5.6 (-10) -5.7 (-10) -5.7 (-10) -5.1 (-9) -4.6 (-8) -4.1 (-7) -3 (-5) -3.5 (-6) -6 (-11) -6.1 (-11) -7.3 (-13) -5.2 (-9)

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Jamestown vs Grajau Discussion

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