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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