Vs > Libreville
 | Portland, Maine vs Libreville Climate & Distance Between |  |
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- The distance between Portland, Maine, Usa and Libreville, Gabon is approximately 9,149 km or 5,685 mi.
- To reach Portland, Maine in this distance one would set out from Libreville bearing 314.1° or NW
 and follow the great circles arc to approach Portland, Maine bearing 276.8° or W .
- Portland, Maine has a warm summer continental/ hemiboreal climate with no dry season (Dfb) whereas Libreville has a tropical monsoonal climate (Am).
- The mean temperature is 18.5 °C (33.3°F) cooler.
- Average monthly temperatures vary by 23.7 °C (42.7°F) more in Portland, Maine. The continentality subtype is subcontinental as opposed to extremely hyperoceanic.
- Total annual precipitation averages 1715.4 mm (67.5 in) less which is equivalent to 1715.4 l/m² (42.1 US gal/ft²) or 17,154,000 l/ha (1,833,876 US gal/ac) less. About 2/5 as much.
- There are 896 more hours of sunlight per year in Portland, Maine. In whichever way circa 2h 26' more per day or about 1 1/2 as many.
- The altitude of the sun at midday is overall 28.3° lower in Portland, Maine than in Libreville.
- Relative humidity levels are 23.3% lower.
- The mean dew point temperature is 22.5°C (40.5°F) lower.
Climate Comparison Table
The table shows values for Portland, Maine relative to Libreville. You can also view this comparison the other way around from the perspective of Libreville vs Portland, Maine.
| | |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
Annual |
 | Average Max Temperature °C ( °F) |
-30 (-55) |
-29 (-53) |
-25 (-45) |
-19 (-34) |
-12 (-22) |
-5 (-9) |
0 (-1) |
-2 (-3) |
-7 (-12) |
-13 (-24) |
-20 (-36) |
-27 (-49) |
|
-16 (-29) |
 | Average Temperature °C ( °F) |
-33 (-59) |
-32 (-57) |
-27 (-48) |
-20 (-37) |
-15 (-27) |
-9 (-15) |
-4 (-7) |
-5 (-8) |
-10 (-19) |
-17 (-30) |
-22 (-40) |
-29 (-53) |
|
-19 (-33) |
 | Average Min Temperature °C ( °F) |
-36 (-64) |
-34 (-62) |
-28 (-51) |
-22 (-39) |
-18 (-32) |
-12 (-22) |
-8 (-14) |
-8 (-14) |
-14 (-25) |
-20 (-36) |
-24 (-44) |
-31 (-56) |
|
-21 (-38) |
 | Average Precipitation mm (in) |
-161 (-6) |
-159 (-6) |
-270 (-11) |
-235 (-9) |
-155 (-6) |
+33 (+1) |
+72 (+3) |
+59 (+2) |
-26 (-1) |
-328 (-13) |
-359 (-14) |
-188 (-7) |
|
-1715 (-68) |
 | Number of Precipitation Days (% chance of precip. on a day ) |
-2 ( -6) |
-4 ( -14) |
-5 ( -16) |
-7 ( -23) |
-2 ( -6) |
+9 (+30) |
+9.5 (+31) |
+5 (+16) |
-3 ( -10) |
-13 ( -42) |
-10 ( -33) |
-5 ( -16) |
|
-27.5 ( -8) |
 | Average Sunlight Hours/ Day |
-0h 56' |
-0h 12' |
+1h 00' |
+1h 20' |
+3h 36' |
+5h 30' |
+6h 05' |
+5h 42' |
+4h 46' |
+3h 05' |
+0h 10' |
-0h 52' |
|
+2h 26' |
 | Average Daylight Hours & Minutes/ Day |
-2h 49' |
-1h 44' |
-0h 19' |
+1h 12' |
+2h 30' |
+3h 10' |
+2h 52' |
+1h 44' |
+0h 16' |
-1h 14' |
-2h 31' |
-3h 10' |
|
0h 00' |
 | Sun altitude at solar noon on the 21st day (°) |
-43 |
-42.6 |
-41.5 |
-20.1 |
-3.6 |
+2.8 |
-3.3 |
-20.1 |
-41.4 |
-42.8 |
-43 |
-43.1 |
| -28.3 |
 | Relative Humidity (%) |
-22 |
-23 |
-24 |
-26 |
-26 |
-20 |
-21 |
-21 |
-23 |
-27 |
-23 |
-24 |
|
-23.3 |
 | Average Dew Point Temperature °C & (°F) |
-35.6 (-64) |
-34.6 (-62) |
-29.8 (-54) |
-24.9 (-45) |
-20 (-36) |
-12.6 (-23) |
-8.5 (-15) |
-9.2 (-17) |
-14.9 (-27) |
-21.6 (-39) |
-25.8 (-46) |
-32.4 (-58) |
|
-22.5 (-41) |
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Portland, Maine vs Libreville Discussion
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