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Freetown vs Boston, Massachusetts Climate & Distance Between

Usa flag
  • The distance between Freetown, Sierra Leone and Boston, Massachusetts, Usa is approximately 6,746 km or 4,192 mi.
  • To reach Freetown in this distance one would set out from Boston, Massachusetts bearing 106.3° or ESE and follow the great circles arc to approach Freetown bearing 134.2° or SE .
  • Freetown has a tropical monsoonal climate (Am) whereas Boston, Massachusetts has a humid subtropical climate (Cfa).
  • The average annual temperature is 16.6 °C (30°F) warmer.
  • Average monthly temperatures vary by 22.4 °C (40.3°F) less in Freetown. The continentality subtype is extremely hyperoceanic as opposed to subcontinental.
  • Total annual precipitation averages 1891 mm (74.4 in) more which is equivalent to 1891 l/m² (46.41 US gal/ft²) or 18,910,000 l/ha (2,021,605 US gal/ac) more. About 2 4/5 as much.
  • There are 552 fewer hours of sunlight per year in Freetown. In whichever way circa 1h 29' less per day or about 4/5 as many.
  • The altitude of the sun at midday is overall 26.3° higher in Freetown than in Boston, Massachusetts.
  • Relative humidity levels are 24% higher.
  • The mean dew point temperature is 21°C (37.7°F) higher.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +28 (+50) +27 (+49) +23 (+42) +18 (+32) +12 (+21) +6 (+10) +1 (+2) +2 (+3) +6 (+11) +13 (+23) +19 (+34) +25 (+45) +15 (+27)
average temperature iconAverage Temperature °C ( °F) +29 (+53) +29 (+51) +24 (+44) +20 (+35) +14 (+25) +8 (+14) +3 (+6) +4 (+7) +8 (+15) +14 (+26) +20 (+37) +27 (+48) +17 (+30)
minimum temperature iconAverage Min Temperature °C ( °F) +30 (+53) +29 (+52) +25 (+45) +20 (+36) +15 (+26) +9 (+15) +5 (+8) +5 (+9) +9 (+17) +15 (+27) +21 (+37) +27 (+49) +17 (+31)
rainfall iconAverage Precipitation mm (in) -88 (-3) -88 (-3) -81 (-3) -45 (-2) +95 (+4) +245 (+10) +662 (+26) +709 (+28) +406 (+16) +182 (+7) -20 (-1) -86 (-3) +1891 (+74)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -11 ( -35) -10 ( -35) -10 ( -32) -7 ( -23) +1 (+3) +9 (+30) +15 (+48) +14 (+45) +14 (+47) +10 (+32) +1 (+3) -5 ( -16)   +21 (+6)
sunshine iconAverage Sunlight Hours/ Day +2h 56' +1h 41' +1h 23' +0h 18' -2h 17' -5h 20' -7h 36' -6h 58' -4h 16' -0h 52' +1h 14' +1h 52'   -1h 29'
daylight iconAverage Daylight Hours & Minutes/ Day +2h 16' +1h 24' +0h 15' -0h 58' -2h 00' -2h 33' -2h 18' -1h 24' -0h 13' +1h 00' +2h 02' +2h 33'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +33.6 +33.4 +33.5 +27.1 +10.5 +4.1 +10.1 +26.9 +33.6 +33.5 +33.6 +33.8   +26.3
relative humidity iconRelative Humidity (%) +13 +14 +17 +25 +26 +28 +32 +29 +30 +28 +24 +21   +23.9
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +29.9 (+54) +29.4 (+53) +26.6 (+48) +24.4 (+44) +19 (+34) +13.7 (+25) +10.3 (+19) +10.1 (+18) +14.3 (+26) +20 (+36) +24.6 (+44) +29.2 (+53) +21 (+38)

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Freetown vs Boston, Massachusetts Discussion

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