Vs > Johannesburg
 | Jamestown vs Johannesburg Climate & Distance Between |  |
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- The distance between Jamestown, Saint Helena and Johannesburg, South Africa is approximately 3,689 km or 2,293 mi.
- To reach Jamestown in this distance one would set out from Johannesburg bearing 281.1° or W
 and follow the great circles arc to approach Jamestown bearing 293.7° or WNW .
- Jamestown has a subtropical hot desert climate (BWh) whereas Johannesburg has a mid-latitude cool steppe climate (BSk).
- The average annual temperature is 5.6 °C (10.1°F) warmer.
- Average monthly temperatures vary by 6 °C (10.8°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to barely hyperoceanic.
- Total annual precipitation averages 406 mm (16 in) less which is equivalent to 406 l/m² (9.96 US gal/ft²) or 4,060,000 l/ha (434,041 US gal/ac) less. About 1/4 as much.
- The altitude of the sun at midday is overall 7.5° higher in Jamestown than in Johannesburg.
- Relative humidity levels are 10.4% higher.
- The mean dew point temperature is 7.8°C (14.1°F) higher.
Climate Comparison Table
The table shows values for Jamestown relative to Johannesburg. You can also view this comparison the other way around from the perspective of Johannesburg vs Jamestown.
| | |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
Annual |
 | Average Max Temperature °C ( °F) |
+1 (+2) |
+2 (+4) |
+4 (+7) |
+5 (+9) |
+5 (+9) |
+6 (+11) |
+5 (+9) |
+2 (+4) |
+-1 (-2) |
+-2 (-4) |
+-2 (-4) |
+-2 (-4) |
|
+2 (+3) |
 | Average Temperature °C ( °F) |
+4 (+6) |
+5 (+8) |
+6 (+10) |
+8 (+14) |
+10 (+17) |
+11 (+19) |
+10 (+17) |
+7 (+13) |
+4 (+7) |
+2 (+3) |
+2 (+4) |
+2 (+4) |
|
+6 (+10) |
 | Average Min Temperature °C ( °F) |
+6 (+11) |
+7 (+13) |
+9 (+16) |
+11 (+20) |
+13 (+23) |
+14 (+25) |
+13 (+23) |
+11 (+20) |
+8 (+14) |
+6 (+11) |
+5 (+9) |
+5 (+9) |
|
+9 (+16) |
 | Average Precipitation mm (in) |
-117 (-5) |
-84 (-3) |
-70 (-3) |
-44 (-2) |
+5 (+0) |
+9 (+0) |
+29 (+1) |
+4 (+0) |
-22 (-1) |
-5 (0) |
-11 (0) |
-100 (-4) |
|
-406 (-16) |
 | Number of Precipitation Days (% chance of precip. on a day ) |
-11 ( -35) |
-8 ( -28) |
-7 ( -23) |
-4 ( -13) |
0 ( 0) |
+5 (+17) |
+6 (+19) |
+1 (+3) |
-2 ( -7) |
-8 ( -26) |
-13 ( -43) |
-14 ( -45) |
|
-55 ( -15) |
 | Average Daylight Hours & Minutes/ Day |
-0h 36' |
-0h 22' |
-0h 04' |
+0h 15' |
+0h 32' |
+0h 40' |
+0h 36' |
+0h 22' |
+0h 03' |
-0h 16' |
-0h 32' |
-0h 40' |
|
0h 00' |
 | Sun altitude at solar noon on the 21st day (°) |
+2 |
+9.6 |
+10.2 |
+10.2 |
+10.2 |
+10.3 |
+10.2 |
+10.2 |
+10.2 |
+9.4 |
+1.7 |
-4.7 |
| +7.5 |
 | Relative Humidity (%) |
-5 |
-6 |
-6 |
+1 |
+15 |
+19 |
+22 |
+29 |
+28 |
+17 |
+11 |
+0 |
|
+10.4 |
 | Average Dew Point Temperature °C & (°F) |
+2.1 (+4) |
+2.9 (+5) |
+3.9 (+7) |
+7.8 (+14) |
+12.5 (+23) |
+14.5 (+26) |
+14.1 (+25) |
+13.6 (+24) |
+10.7 (+19) |
+5.5 (+10) |
+4.5 (+8) |
+1.9 (+3) |
|
+7.8 (+14) |
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Jamestown vs Johannesburg Discussion
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