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Tristan Da Cunha vs Jamestown Climate & Distance Between

Saint Helena flag
  • The distance between Tristan Da Cunha, Tristan Da Cunha and Jamestown, Saint Helena is approximately 2,438 km or 1,515 mi.
  • To reach Tristan Da Cunha in this distance one would set out from Jamestown bearing 194.2° or SSW and follow the great circles arc to approach Tristan Da Cunha bearing 197.2° or SSW .
  • Tristan Da Cunha has a marine west coast climate (Cfb) whereas Jamestown has a subtropical hot desert climate (BWh).
  • The mean temperature is 6.8 °C (12.2°F) cooler.
  • Average monthly temperatures vary by 3 °C (5.4°F) more in Tristan Da Cunha. The continentality subtype is barely hyperoceanic as opposed to truly hyperoceanic.
  • Total annual precipitation averages 1544 mm (60.8 in) more which is equivalent to 1544 l/m² (37.89 US gal/ft²) or 15,440,000 l/ha (1,650,638 US gal/ac) more. About 12 1/4 as much.
  • The altitude of the sun at midday is overall 18.2° lower in Tristan Da Cunha than in Jamestown.
  • Relative humidity levels are 8.7% higher.
  • The mean dew point temperature is 4.6°C (8.3°F) lower.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) -7 (-13) -6 (-11) -8 (-14) -9 (-16) -7 (-13) -8 (-14) -8 (-14) -8 (-14) -8 (-14) -8 (-14) -6 (-11) -5 (-9) -7 (-13)
average temperature iconAverage Temperature °C ( °F) -6 (-11) -5 (-9) -6 (-11) -8 (-14) -7 (-13) -8 (-14) -8 (-14) -8 (-14) -8 (-14) -7 (-13) -6 (-11) -5 (-9) -7 (-12)
minimum temperature iconAverage Min Temperature °C ( °F) -5 (-9) -4 (-7) -6 (-11) -6 (-11) -6 (-11) -7 (-13) -6 (-11) -7 (-13) -7 (-13) -7 (-13) -5 (-9) -4 (-7) -6 (-11)
rainfall iconAverage Precipitation mm (in) +85 (+3) +103 (+4) +101 (+4) +119 (+5) +137 (+5) +142 (+6) +127 (+5) +165 (+6) +164 (+6) +149 (+6) +128 (+5) +124 (+5) +1544 (+61)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +14 (+45) +12 (+42) +12 (+39) +17 (+57) +19 (+61) +17 (+57) +17 (+55) +23 (+74) +22 (+73) +21 (+68) +18 (+60) +18 (+58)   +210 (+57)
daylight iconAverage Daylight Hours & Minutes/ Day +1h 24' +0h 51' +0h 09' -0h 35' -1h 14' -1h 34' -1h 25' -0h 52' -0h 08' +0h 37' +1h 15' +1h 34'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) -12.6 -20.3 -21.1 -21.2 -21.2 -21.2 -21.1 -21.1 -21.1 -20.1 -12.1 -6.1   -18.2
relative humidity iconRelative Humidity (%) +16 +12 +11 +13 +6 +7 +5 +3 +3 +7 +7 +15   +8.8
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) -2.2 (-4) -2.1 (-4) -3.3 (-6) -4.3 (-8) -5.5 (-10) -6.4 (-12) -6.2 (-11) -7.1 (-13) -7.1 (-13) -5.4 (-10) -4.4 (-8) -1.6 (-3) -4.6 (-8)

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