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 10 years Average Insolation Data -Major Cities in North /South America  (  KW-H/m2/day )

USA

Canada

Central / South America

Asia

Europe

Africa

 

 
 
North America - USA                          
Country State City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Avg
USA AL Montgomery 2.40 3.16 4.41 5.53 5.75 6.04 5.69 5.35 4,76 3.98 2.87 2.27 4.35
  AK Anchorage 0.21 0.76 1.68 3.12 3.98 4.58 4.25 3.16 1.98 0.98 0.37 0.12 2.09
  AR Little rock 2.36 3.39 4.01 5.32 5.71 6.19 6.15 5.85 5.25 4.17 2.95 2.25 4.46
  AZ Phoenix 3.25 4.41 5.17 6.76 7.42 7.70 6.99 6.11 6.02 4.44 3.52 2.75 5.38
  CA Los Angeles 3.09 4.25 5.09 6.58 7.29 7.62 7.45 6.72 6.11 4.42 3.43 2.72 5.40
  CA San Francisco 2.35 3.33 4.42 5.95 6.84 7.39 7.55 6.51 5.75 3.92 2.65 2.06 4.89
  CO Denver 2.25 3.20 4.32 5.61 6.11 6.71 6.50 5.86 5.47 4.01 2.59 1.98 4.55
  CT Hartford 1.70 2.43 3.48 4.07 5.14 5.58 5.38 5.04 4.13 2.91 1.81 1.42 3.59
  DE Dover 1.85 2.62 3.60 4.33 5.44 5.91 5.64 5.30 4.38 3.23 2.21 1.66 3.84
  FL Miami 3.72 4.61 5.42 6.40 6.61 6.29 6.26 6.08 5.47 4.84 3.96 3.46 5.26
  FL Jasonville 2.65 3.49 4.55 5.81 6.11 5.78 5.67 5.15 4.38 3.85 3.06 2.57 4.42
  GA Atlanta 2.31 3.37 4.08 5.20 6.02 6.01 5.81 5.59 4.76 3.95 2.98 2.33 4.37
  HI Honolulu 4.38 5.15 5.99 6.69 7.05 7.48 7.37 7.07 6.51 5.46 4.41 4.01 5.96
  IA Dubuque 1.64 2.58 3.34 4.57 5.54 6.06 5.81 5.26 4.33 3.03 1.72 1.35 3.77
  ID Boise 1.73 2.72 3.77 5.22 5.90 6.57 7.17 6.12 5.28 3.29 1.74 1.46 4.24
  IN Indianapolis 1.67 2.59 3.28 4.67 5.46 6.11 5.79 5.37 4.76 3.33 1.97 1.46 3.87
  IL Chicago 1.50 2.45 3.20 4.48 5.56 6.07 5.68 5.27 4.51 3.07 1.69 1.26 3.72
  KS Kansas City 2.06 2.89 3.62 4.92 5.58 6.17 6.21 5.59 4.90 3.49 2.20 1.75 4.11
  KY Louisville 1.71 2.65 3.32 4.73 5.38 6.08 5.79 5.35 4.80 3.42 2.10 1.56 3.90
  LA New Orleans 2.64 3.73 4.67 5.80 6.60 6.15 6.09 5.70 5.13 4.48 3.49 2.68 4.76
  MA Boston 1.66 2.50 3.51 4.13 5.11 5.47 5.44 5.05 4.12 2.84 1.74 1.4 3.58
  MD Annapolis 1.96 2.80 3.71 4.55 5.54 6.03 5.77 5.34 4.48 3.40 2.37 1.81 3.98
  ME Portland 1.38 2.33 3.49 4.57 5.46 6.09 6.64 5.78 4.80 2.79 1.41 1.1 3.82
  MI Detroit 1.43 2.33 3.19 4.34 5.44 5.98 5.64 4.99 4.25 2.73 1.52 1.14 3.58
  MO St.Louis 2.02 2.82 3.52 4.97 5.56 6.21 6.05 5.63 4.91 3.55 2.21 1.73 4.09
  MN Minneapolis 1.60 2.61 3.30 4.55 5.44 5.86 5.77 5.12 4.12 2.90 1.62 1.34 3.68
  MS Jackson 1.47 2.41 3.22 4.33 5.46 5.93 5.57 4.99 4.30 2.78 1.55 1.17 3.59
  MT Billings 1.55 2.57 3.52 4.82 5.63 6.45 6.39 5.75 4.67 3.19 1.77 1.3 3.96
  MT Great Falls 1.30 2.36 3.41 4.84 5.56 6.18 6.44 5.53 4.40 2.90 1.53 1.11 3.79
  NC Charlotte 2.22 3.17 3.95 4.98 5.80 6.01 5.76 5.27 4.58 3.75 2.76 2.21 4.20
  ND Fargo 1.44 2.39 3.36 4.79 5.62 5.82 5.94 5.14 4.01 2.83 1.59 1.31 3.68
  NE Omaha 1.92 2.76 3.45 4.74 5.60 6.14 6.11 5.46 4.74 3.34 2.00 1.57 3.98
  NH Manchester 1.66 2.50 3.51 4.13 5.11 5.47 5.44 5.05 4.12 2.84 1.74 1.4 3.58
  NJ Trenton 1.71 2.39 3.43 4.04 5.26 5.67 5.39 5.14 4.18 3.00 1.98 1.48 3.63
  NM Albuquerque 2.92 3.97 4.92 6.30 6.68 6.94 6.66 5.80 5.68 4.18 3.16 2.5 4.97
  NV Las Vegas 3.02 4.13 5.05 6.57 7.25 7.69 7.37 6.42 6.08 4.26 3.18 2.6 5.30
  NY Buffalo 1.63 2.31 3.39 4.71 5.29 5.86 5.85 5.39 4.51 3.26 2.10 1.49 3.82
  NY New York 1.67 2.37 3.41 3.93 5.11 5.48 5.26 5.01 4.05 2.85 1.82 1.4 3.53
  OH Columbus 1.64 2.57 3.26 4.63 5.40 6.08 5.73 5.29 4.74 3.29 1.96 1.45 3.83
  OK Tulsa 2.33 3.22 3.90 5.25 5.58 6.32 6.40 5.80 5.08 3.80 2.62 2.06 4.36
  OR Portland 1.38 2.33 3.49 4.57 5.46 6.09 6.64 5.78 4.80 2.79 1.41 1.1 3.82
  PA Philadelphia 1.85 2.62 3.60 4.33 5.44 5.91 5.64 5.30 4.38 3.23 2.21 1.66 3.84
  PA Pittsburgh 1.59 2.40 3.26 4.07 5.05 5.53 5.27 4.94 4.05 2.88 1.86 1.41 3.53
  RI Providence 1.70 2.46 3.53 4.20 5.17 5.67 5.48 5.08 4.21 2.97 1.80 1.43 3.64
  SC Columbia 2.14 2.91 3.62 5.03 5.56 6.22 6.13 5.64 4.95 3.57 2.25 1.82 4.15
  SD Sioux Falls 1.72 2.71 3.31 4.65 5.61 6.10 6.04 5.42 4.47 3.20 1.78 1.43 3.87
  TN Nashville 1.94 2.90 3.54 4.76 5.57 5.90 5.86 5.62 4.63 3.53 2.45 1.82 4.04
  TX Austin 2.63 3.32 4.42 5.38 5.61 6.29 6.45 5.96 4.96 4.15 3.04 2.38 4.55
  TX San Antonio 2.57 3.70 4.43 5.54 5.94 6.62 6.49 6.28 5.70 4.67 3.43 2.62 4.83
  TX Houston 2.47 3.50 4.40 5.59 6.03 6.45 6.36 6.07 5.46 4.61 3.30 2.44 4.72
  UT Salt Lake City 2.23 3.15 4.09 5.57 6.26 6.98 6.86 5.98 5.39 3.68 2.29 1.97 4.53
  VA Washington 1.95 2.80 3.66 4.46 5.42 5.88 5.63 5.22 4.38 3.36 2.34 1.79 3.90
  VT Montpelier 1.58 2.54 3.50 4.05 5.00 5.24 5.37 4.92 3.79 2.46 1.52 1.28 3.43
  WA Seattle 1.14 2.04 3.23 4.26 5.19 5.75 6.27 5.46 4.43 2.50 1.21 0.9 3.53
  WI Milwaukee 1.43 2.41 3.29 4.48 5.60 6.09 5.74 5.21 4.34 2.90 1.60 1.2 3.69
  WV Charleston 1.75 2.64 3.34 4.26 5.20 5.67 5.49 5.19 4.26 3.19 2.15 1.62 3.73
  WY Casper 1.93 2.80 3.79 5.13 5.90 6.68 6.50 5.90 5.13 3.59 2.06 1.65 4.25

North America-Canada

      Go top                  
Country State City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Avg
Canada AB Edmonton 1.45 2.36 3.41 4.25 4.91 5.42 5.55 4.76 3.52 2.18 1.43 1.21 3.37
  AB Calgary 1.00 1.85 3.09 4.37 5.05 5.50 5.48 4.67 3.34 2.17 1.19 0.82 3.21
  BC Vancouver 1.07 1.90 3.09 4.17 5.01 5.33 5.72 4.95 3.64 2.10 1.19 0.88 3.25
  BC Victoria 1.00 1.82 2.93 4.01 5.13 5.54 5.85 5.28 3.88 2.17 1.11 0.86 3.29
  MB Winnipeg 1.21 2.08 3.27 4.55 5.54 5.80 5,85 4.84 3.32 2.21 1.33 1.02 3.41
  MB Churchill 0.47 1.31 2.50 3.94 4.80 5.41 5.31 4.26 2.58 1.41 0.70 0.23 2.74
  NL St. Johns 1.56 2.27 3.48 4.19 4.76 5.05 5.05 4.54 3.53 2.29 1.43 1.27 3.28
  NS Halifax 1.56 2.31 3.46 4.09 4.82 5.27 5.41 4.86 3.92 2.54 1.53 1.3 3.42
  NT Yellowknife 0.15 0.79 1.98 3.86 5.38 6.03 5.75 4.46 2.71 1.18 0.41 0.09 2.73
  ON Ottawa 1.42 2.31 3.44 4.30 5.01 5.55 5.67 4.76 3.51 2.20 1.45 1.2 3.40
  ON Toronto 1.44 2.27 3.19 4.13 5.15 5.83 5.67 4.82 3.66 2.47 1.48 1.2 3.44
  ON Kitchener 1.67 2.54 3.30 4.13 5.18 5.89 5.68 4.76 3.76 2.50 1.48 1.3 3.52
  ON Kingston 1.31 2.04 3.00 4.15 5.05 5.68 5.72 4.84 3.59 2.38 1.48 1.09 3.36
  ON Owen Sound 1.46 2.31 3.17 4.09 5.26 5.80 5.79 4.76 3.64 2.39 1.36 1.18 3.43
  ON Thunder Bay 1.15 2.04 3.37 4.59 5.41 5.73 5.63 4.80 3.46 2.31 1.23 0.98 3.39
  ON St Catharines 1.44 2.27 3.19 4.13 5.15 5.83 5.67 4.82 3.66 2.47 1.48 1.2 3.44
  PEI Charlottetown  1.43 2.17 3.35 4.46 5.26 5.57 5.85 5.01 3.89 2.38 1.32 1.03 3.48
  QC Quebec 1.44 2.25 3.37 4.33 4.84 5.27 5.19 4.54 3.34 2.04 1.42 1.21 3.27
  QC Montreal 1.45 2.36 3.41 4.25 4.91 5.42 5.55 4.76 3.52 2.18 1.43 1.21 3.37
  SK Regina 1.14 1.96 3.02 4.69 5.48 5.79 6.14 4.96 3.42 2.29 1.30 0.95 3.42
  SK Saskatoon  0.98 1.84 3.05 4.54 5.43 5.74 5.85 4.82 3.25 2.04 1.10 0.78 3.29
  YT Whitehorse 0.40 0.97 2.13 3.72 4.97 5.58 5.12 4.01 2.60 1.33 0.53 0.16 2.63

 

Central / South America       Go top                  
Country State City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Avg
Argentina   Buenos Aires 6.44 5.67 4.53 3.53 2.74 2.04 2.31 3.27 4.23 5.12 6.36 6.44 4.39
Brazil   Brasilia 5.21 5.15 5.09 4.99 4.80 4.59 4.86 5.46 5.28 5.23 4.97 4.82 5.03
Brazil   Rio 5.27 5.34 4.90 4.19 3.49 3.43 3.45 4.03 3.89 4.55 5.13 4.99 4.39
Bermuda   Kindley 2.20 3.03 4.08 5.45 6.63 6.45 6.76 6.20 5.31 3.74 2.93 2.18 4.58
Bolivia   La Paz 5.30 5.57 5.16 5.01 4.78 4.37 4.51 4.96 5.66 5.98 6.15 5.92 5.28
Bahamas   Nassau 3.84 4.72 5.59 6.60 6.80 6.56 6.70 6.34 5.62 4.76 4.01 3.53 5.42
Chile   Santiago 7.55 6.56 5.13 3.83 2.59 2.22 2.38 3.09 4.08 5.64 6.84 7.82 4.81
Colombia   Bogota 4.50 4.48 4.67 4.46 4.45 4.63 4.71 4.70 4.80 4.28 4.24 4.32 4.52
Mexico   Mexico City 4.34 5.07 5.89 5.95 5.90 5.03 4.76 4.86 4.57 4.73 4.57 4.29 5.00
Equator   Quito 3.34 3.69 3.90 3.76 3.58 3.58 3.70 3.79 3.54 3.38 3.63 3.32 3.60
 French Guinea   Cayenne 3.91 4.34 4.55 4.66 4.04 4.25 4.96 5.40 5.81 5.51 4.91 4.29 4.72
Guinea   Georgetown 4.12 4.57 4.98 5.09 4.49 4.32 4.65 4.90 5.15 4.88 4.42 4.01 4.63
Panama   Panama City 5.27 5.92 6.23 5.75 4.78 4.11 4.16 4.15 4.24 3.99 4.23 4.66 4.79
Puerto Rico   San Juan 4.26 4.90 5.70 6.09 5.89 6.09 6.08 5.78 5.26 4.80 4.36 4.15 5.28
Paraguay   Asuncion 6.10 5.77 4.98 3.84 3.48 2.76 3.09 3.97 4.49 5.26 6.22 6.26 4.68
Peru   Lima 1.57 2.48 3.21 4.46 5.37 5.97 5.58 5.18 4.58 3.09 1.81 1.33 3.71
Surinam   Paramaribo 4.13 4.63 5.07 5.08 4.78 4.78 5.12 5.42 5.87 5.61 4.97 4.47 4.99
Uruguay   Montevideo 6.61 5.54 4.51 3.43 2.56 2.04 2.20 2.85 4.01 5.05 6.07 6.63 4.29
Venezuela   Caracas 5.14 5.82 6.11 5.94 5.76 5.63 5.77 5.77 5.72 5.56 5.01 4.84 5.59

Courtesy of NASA Surface meteorology and Solar Energy http://eosweb.larc.nasa.gov/sse/

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