Vs > San Juan
 | Portland, Maine vs San Juan Climate & Distance Between |  |
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- The distance between Portland, Maine, Usa and San Juan, Puerto Rico is approximately 2,833 km or 1,760 mi.
- To reach Portland, Maine in this distance one would set out from San Juan bearing 352.7° or N
 and follow the great circles arc to approach Portland, Maine bearing 350.4° or N .
- Portland, Maine has a warm summer continental/ hemiboreal climate with no dry season (Dfb) whereas San Juan has a tropical monsoonal climate (Am).
- Portland, Maine is in or near the cool temperate wet forest biome whereas San Juan is in or near the subtropical moist forest biome.
- The mean temperature is 18.2 °C (32.8°F) cooler.
- Average monthly temperatures vary by 23 °C (41.4°F) more in Portland, Maine. The continentality subtype is subcontinental as opposed to truly hyperoceanic.
- Total annual precipitation averages 501.7 mm (19.8 in) less which is equivalent to 501.7 l/m² (12.31 US gal/ft²) or 5,017,000 l/ha (536,351 US gal/ac) less. About 2/3 as much.
- There are 237 fewer hours of sunlight per year in Portland, Maine. In whichever way circa 0h 39' less per day or about 1 as many.
- The altitude of the sun at midday is overall 23.6° lower in Portland, Maine than in San Juan.
- Relative humidity levels are 15.7% lower.
- The mean dew point temperature is 20.6°C (37.1°F) lower.
Climate Comparison Table
The table shows values for Portland, Maine relative to San Juan. You can also view this comparison the other way around from the perspective of San Juan vs Portland, Maine.
| | |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
Annual |
 | Average Max Temperature °C ( °F) |
-28 (-50) |
-27 (-49) |
-23 (-41) |
-18 (-32) |
-13 (-23) |
-8 (-15) |
-5 (-9) |
-6 (-10) |
-10 (-19) |
-16 (-29) |
-22 (-39) |
-26 (-47) |
|
-17 (-30) |
 | Average Temperature °C ( °F) |
-30 (-53) |
-28 (-51) |
-23 (-42) |
-19 (-34) |
-14 (-26) |
-10 (-18) |
-7 (-12) |
-7 (-13) |
-12 (-21) |
-18 (-32) |
-22 (-40) |
-28 (-50) |
|
-18 (-33) |
 | Average Min Temperature °C ( °F) |
-31 (-57) |
-29 (-53) |
-24 (-44) |
-20 (-36) |
-16 (-28) |
-12 (-21) |
-8 (-15) |
-9 (-16) |
-14 (-24) |
-20 (-35) |
-23 (-41) |
-29 (-52) |
|
-20 (-35) |
 | Average Precipitation mm (in) |
-29 (-1) |
+14 (+1) |
+37 (+1) |
+10 (+0) |
-89 (-4) |
-57 (-2) |
-81 (-3) |
-108 (-4) |
-94 (-4) |
-49 (-2) |
-34 (-1) |
-22 (-1) |
|
-502 (-20) |
 | Number of Precipitation Days (% chance of precip. on a day ) |
-5 ( -16) |
-2 ( -7) |
+1 (+3) |
-2 ( -7) |
-6 ( -19) |
-6 ( -20) |
-11 ( -35) |
-9 ( -29) |
-8 ( -27) |
-8 ( -26) |
-7 ( -23) |
-8 ( -26) |
|
-71 ( -19) |
 | Average Sunlight Hours/ Day |
-2h 42' |
-1h 52' |
-2h 17' |
-1h 30' |
+0h 30' |
+2h 02' |
+1h 46' |
+0h 50' |
+0h 44' |
-1h 00' |
-2h 28' |
-1h 54' |
|
-0h 39' |
 | Average Daylight Hours & Minutes/ Day |
-1h 52' |
-1h 09' |
-0h 12' |
+0h 47' |
+1h 39' |
+2h 06' |
+1h 54' |
+1h 09' |
+0h 10' |
-0h 49' |
-1h 40' |
-2h 06' |
|
0h 00' |
 | Sun altitude at solar noon on the 21st day (°) |
-25.2 |
-25.1 |
-25.2 |
-25.2 |
-21.4 |
-15.2 |
-20.8 |
-25.2 |
-25.1 |
-25.1 |
-25.1 |
-25.1 |
| -23.6 |
 | Relative Humidity (%) |
-11 |
-14 |
-13 |
-17 |
-19 |
-17 |
-18 |
-18 |
-17 |
-18 |
-14 |
-13 |
|
-15.8 |
 | Average Dew Point Temperature °C & (°F) |
-30.1 (-54) |
-29.3 (-53) |
-24.5 (-44) |
-21.5 (-39) |
-17.9 (-32) |
-13.5 (-24) |
-10.5 (-19) |
-11.2 (-20) |
-15.2 (-27) |
-21 (-38) |
-24.1 (-43) |
-28.5 (-51) |
|
-20.6 (-37) |
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Portland, Maine vs San Juan Discussion
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