Weather Data Sources

The weather data on this site are derived from a number of public sources. For more information on each weather data set (description, citation and web site where appropriate, EPWs last updated, and period of record), see this summary document. The EPWs were produced by translating the source data into the EPW format.

TMYx - see below for details on locations. TMYx files are derived from ISD (US NOAA's Integrated Surface Database) with hourly data through 2017. TMYx files are created using the general principles from the IWEC (International Weather for Energy Calculations) that was published in 2001. TMYn files are created from NSRDB (National Solar Radiation Database from NREL - National Renewable Energy Laboratory) downloads - this data was used in the Caribbean where there was little or no ISD data). The resultant files have been peer reviewed by interested parties.

TMYx - full dataset: all the years available from the ISD database. The stat file and COMMENT1 line of the EPW will show details (see below). TMYx.year1-year2 contains a TMYx generation from just the period year1-year2 (usually 15 years). A minimum of 5 years is necessary to obtain a TMYx file.

TMYx full dataset example: Note that in the following example only 46 years were included though the full range (1957-2017) would be 61 years. Shown in the comments field of the epw files and on the stat file

From the stat file of Aswan Intl AP:
 Comment 1: NCEI ISD - #years=[46] Period of
 Record=1957-2017;Jan=1995;Feb=2004;Mar=1988;Apr=1982;May=2008;Jun=1993;Jul=2003;A
 ug=1996;Sep=1988;Oct=2006;Nov=1997;Dec=2003;

Comment1 in the epw:
COMMENTS 1,"NCEI ISD - #years=[46] Period of Record=1957-2017;Jan=1995;Feb=2004;Mar=1988;Apr=1982;May=2008;Jun=1993;Jul=2003;Aug=1996;Sep=1988;Oct=2006;Nov=1997;Dec=2003;"

Available Weather Data

  • PHIKO TRY South Korea 22 locations* A Test Reference Year (TRY) was created, based on ISO 15927-4:2005 for assessing the annual energy use. The TRY is based on measured data from the years 2005 till 2014 sourced by Korea Meteorological Administration. The preparation of the TRY was performed by Passive House Institute Korea.
  • TMYx Africa 44 locations*
    78 climate files: 44 from full dataset, 34 with 2003-2017 years data. Egypt
  • TMYx Europe 318 locations*
    606 climate files: 318 from full dataset, 288 with 2003-2017 years data. Totals: Cyprus (34), Czechia (83), Greece (90), Poland (170), Turkey (229)
  • TMYx Greenland 38 locations* (Note: Physically Greenland appears to be part of North America, but WMOs indicate Europe - these files are available in both locations).
    75 climate files: 38 from full dataset, 37 with 2003-2017 years data
  • TMYx St Pierre and Miquelon 1 location*
    2 climate files: 1 from full dataset, 1 with 2003-2017 years data
  • TMYx Mexico 140 locations*
    248 climate files: 140 from full dataset, 108 with 2003-2017 years data
  • TMYx Caribbean 130 locations*
    288 climate files: Caribbean: 130 from full dataset, 115 with 2003-2017 years data (2001-2015 from NSRDB), 43 TMYn; Totals: Anguilla (3), Antigua (9), Aruba (2), Bahamas (56), Barbados (2), Bermuda (5), British Virgin Islands (3), Cayman Islands (12), Cuba (73), Dominica (6), Dominican Republic (26), Grenada (2), Guadeloupe (8), Haiti (12), Jamaica (4), Martinque (4), Montserrat (4), Puerto Rico (12), Saba-Bonaire-St Eustasius (8), Saint Barthelemy (3), Saint Kitts and Nevis (7), Saint Lucia (6), Saint Vincent and the Grenadines (3), Trinidad-Tobago (6), Turks and Caicos (8), US Virgin Islands (4)
  • TMYx Central America 55 locations*
    102 climate files: Central America: 55 from full dataset, 47 with 2003-2017 years data; Totals: Belize (3), Costa Rica (10), El Salvador (10), Guatemala (23), Honduras (31), Nicaragua (14), Panama (11)
  • TMYx South America 587 locations*
    1033 climate files: South America: 587 from full dataset, 446 with 2003-2017 years data; Totals: Argentina (162), Bolivia (62), Brazil (415), Chile (61), Colombia (69), Ecuador (46), Falkland Islands/Islas Malvinas (8), French Guiana (8), Guyana (3), South Georgia/Sandwich Islands (4), Paraguay (45), Peru (52), Suriname (6), Uruguay (41), Venezuela (51)
  • TMYx Antarctica 44 locations*
    83 climate files: Antarctica: 44 from full dataset, 39 with 2003-2017 years data
  • AMTUes
    5 locations, Uruguay
  • CWEC 2016
    492 locations, Canada, with data through 2014
  • TurTMY
    81 locations, Turkey
  • ArgTMY
    15 locations, Argentina
  • JGMY 157 locations
    157 locations, Generated data set developed by Larry Degelman, Professor Emeritus of Architecture, Texas A&M University. The data set is synthetically generated (statistically correct) data.
  • KISR
    2 locations, Kuwait
  • TMY
    12 locations, Locations not duplicated in later TMY3/TMY3a dataset
  • TMY3a (a Jan 2015 update to TMY3)
    1020 locations, United States of America, Puerto Rico, US Virgin Islands, Guam Pacific
  • ISHRAE 2014
    62 locations, India
  • INMET and TRY
    411 locations
    and 17 locations, respectively, Brazil and one location in Antarctica
  • SWERA
    87 locations
    , 11 countries (8 Bangladesh, 1 Belize, 18 Cuba, 9 Ethiopia, 1 Ghana, 5 Guatemala, 8 Honduras, 23 Kenya, 2 Maldives, 3 Nicaragua, 9 Sri Lanka, locations in Brazil and China not included)
  • ITMY
    6 locations, Iran, developed by Iran Building and Housing Research Center
  • RMY 2012
    69 locations, Australia, 50% (A), 33% (B) and 17% (C) solar weight versions, developed for the Australian National House Energy Rating Scheme (NatHERS) 2012 by NIWA
  • IMS
    4 locations, Israel, developed by Technion using data from the Israel Meteorological Service (IMS)
  • BBSR
    15 locations, Germany, current (jahr, somm, wint) and 2035 (jahr, somm, wint) versions
  • NIWA
    18 locations, New Zealand
  • CWEC
    80 locations, Canada
  • California Climate Zone Data
  • 16 locations (CTZ v2), 86 locations (CTZ 2010), 102 locations (CTZ 2016), California Title 24, United States of America
  • Chinese Standard Weather Data (CSWD)
    270 locations, China

 

Other Data Sources (not posted here)