Vs > Jamestown
 | Rio Negro vs Jamestown Climate & Distance Between |  |
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- The distance between Rio Negro, Brazil and Jamestown, Saint Helena is approximately 4,691 km or 2,915 mi.
- To reach Rio Negro in this distance one would set out from Jamestown bearing 248.5° or WSW
 and follow the great circles arc to approach Rio Negro bearing 265.1° or W .
- Rio Negro has a subtropical highland climate with no dry season (Cfb) whereas Jamestown has a subtropical hot desert climate (BWh).
- The annual average temperature is 5.2 °C (9.4°F) cooler.
- Average monthly temperatures vary by 4.4 °C (7.9°F) more in Rio Negro. The continentality subtype is barely hyperoceanic as opposed to truly hyperoceanic.
- Total annual precipitation averages 1282.7 mm (50.5 in) more which is equivalent to 1282.7 l/m² (31.48 US gal/ft²) or 12,827,000 l/ha (1,371,291 US gal/ac) more. About 10 1/3 as much.
- The altitude of the sun at midday is overall 7.4° lower in Rio Negro than in Jamestown.
- Relative humidity levels are 11.7% higher.
- The mean dew point temperature is 2.6°C (4.7°F) lower.
Climate Comparison Table
The table shows values for Rio Negro relative to Jamestown. You can also view this comparison the other way around from the perspective of Jamestown vs Rio Negro.
| | |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
Annual |
 | Average Temperature °C ( °F) |
-4 (-6) |
-3 (-6) |
-5 (-8) |
-7 (-13) |
-8 (-14) |
-8 (-15) |
-8 (-14) |
-6 (-12) |
-5 (-9) |
-3 (-6) |
-3 (-5) |
-2 (-4) |
|
-5 (-9) |
 | Average Precipitation mm (in) |
+145 (+6) |
+161 (+6) |
+128 (+5) |
+57 (+2) |
+79 (+3) |
+75 (+3) |
+47 (+2) |
+78 (+3) |
+113 (+4) |
+143 (+6) |
+107 (+4) |
+151 (+6) |
|
+1283 (+51) |
 | 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 |
-10.3 |
-10.2 |
-10.2 |
-10.1 |
-10.1 |
-10.1 |
-9.3 |
-1.6 |
+4.8 |
| -7.4 |
 | Relative Humidity (%) |
+18 |
+18 |
+19 |
+18 |
+9 |
+11 |
+7 |
+4 |
+7 |
+8 |
+6 |
+15 |
|
+11.7 |
 | Average Dew Point Temperature °C & (°F) |
+0.5 (+1) |
+0.7 (+1) |
-0.5 (-1) |
-3.3 (-6) |
-5.8 (-10) |
-5.7 (-10) |
-6.1 (-11) |
-5.4 (-10) |
-3.4 (-6) |
-1.7 (-3) |
-1.4 (-3) |
+1.1 (+2) |
|
-2.6 (-5) |
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Rio Negro vs Jamestown Discussion
You are welcome to incorporate your thoughts on the differences in climate or other matters such as contrasts in culture, standard of living, demographics etc.
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