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Vs > Boston, Massachusetts
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Seattle, Washington vs Boston, Massachusetts Climate & Distance Between

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  • The distance between Seattle, Washington, Usa and Boston, Massachusetts, Usa is approximately 4,002 km or 2,487 mi.
  • To reach Seattle, Washington in this distance one would set out from Boston, Massachusetts bearing 296.4° or WNW and follow the great circles arc to approach Seattle, Washington bearing 258.9° or W .
  • Seattle, Washington has a Mediterranean warm climate (Csb) whereas Boston, Massachusetts has a humid subtropical climate (Cfa).
  • Seattle, Washington is in or near the cool temperate wet forest biome whereas Boston, Massachusetts is in or near the cool temperate moist forest biome.
  • The average temperature is 0.8 °C (1.4°F) warmer.
  • Average monthly temperatures vary by 11.5 °C (20.7°F) less in Seattle, Washington. The continentality subtype is truly oceanic as opposed to subcontinental.
  • Total annual precipitation averages 88.9 mm (3.5 in) less which is equivalent to 88.9 l/m² (2.18 US gal/ft²) or 889,000 l/ha (95,040 US gal/ac) less. About 1 as much.
  • There are 695 fewer hours of sunlight per year in Seattle, Washington. In whichever way circa 1h 54' less per day or about 3/4 as many.
  • The altitude of the sun at midday is overall 5.2° lower in Seattle, Washington than in Boston, Massachusetts.
  • Relative humidity levels are 13.2% higher.
  • The mean dew point temperature is 3.4°C (6.1°F) higher.

Climate Comparison Table

The table shows values for Seattle, Washington relative to Boston, Massachusetts. You can also view this comparison the other way around from the perspective of Boston, Massachusetts vs Seattle, Washington.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +6 (+10) +7 (+13) +4 (+8) +1 (+2) -1 (-2) -4 (-7) -4 (-8) -3 (-6) -2 (-4) -2 (-3) +0 (-1) +3 (+6) +0 (+1)
average temperature iconAverage Temperature °C ( °F) +7 (+13) +8 (+14) +4 (+8) +1 (+2) -1 (-2) -4 (-6) -5 (-8) -4 (-6) -2 (-4) -1 (-1) +1 (+1) +4 (+8) +1 (+1)
minimum temperature iconAverage Min Temperature °C ( °F) +8 (+15) +8 (+15) +5 (+8) +1 (+2) -1 (-2) -3 (-6) -5 (-9) -4 (-7) -2 (-4) 0 (0) +2 (+3) +6 (+10) +1 (+2)
rainfall iconAverage Precipitation mm (in) +45 (+2) +11 (+0) +2 (+0) -28 (-1) -36 (-1) -38 (-2) -51 (-2) -51 (-2) -28 (-1) -1 (0) +36 (+1) +51 (+2) -89 (-4)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +7 (+23) +4 (+14) +4 (+13) 0 ( 0) -1 ( -3) -2 ( -7) -5 ( -16) -5 ( -16) -1 ( -3) +5 (+16) +7 (+23) +9 (+29)   +22 (+6)
sunshine iconAverage Sunlight Hours/ Day -2h 52' -2h 37' -1h 32' -0h 20' -1h 11' -2h 22' -0h 21' -1h 09' -1h 44' -2h 40' -2h 38' -3h 23'   -1h 54'
daylight iconAverage Daylight Hours & Minutes/ Day -0h 34' -0h 20' -0h 03' +0h 14' +0h 30' +0h 39' +0h 35' +0h 20' +0h 03' -0h 14' -0h 30' -0h 39'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) -5.2 -5.2 -5.2 -5.2 -5.2 -5.3 -5.3 -5.3 -5.3 -5.3 -5.3 -5.2   -5.2
relative humidity iconRelative Humidity (%) +18 +17 +14 +7 +5 +4 +5 +10 +11 +21 +22 +24   +13.2
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +9.6 (+17) +10 (+18) +6.8 (+12) +2.9 (+5) +0.1 (+0) -2.2 (-4) -3.1 (-6) -0.8 (-1) +0.4 (+1) +3.8 (+7) +5 (+9) +8.2 (+15) +3.4 (+6)

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Seattle, Washington vs Boston, Massachusetts Discussion

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