WorldClim BIO Variables V1

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berkeley climate monthly precipitation temperature weather worldclim


WorldClim V1 Bioclim provides bioclimatic variables that are derived from the monthly temperature and rainfall in order to generate more biologically meaningful values.

The bioclimatic variables represent annual trends (e.g., mean annual temperature, annual precipitation), seasonality (e.g., annual range in temperature and precipitation), and extreme or limiting environmental factors (e.g., temperature of the coldest and warmest month, and precipitation of the wet and dry quarters).

The bands scheme follows that of ANUCLIM, except that for temperature seasonality the standard deviation was used because a coefficient of variation does not make sense with temperatures between -1 and 1.

WorldClim version 1 was developed by Robert J. Hijmans, Susan Cameron, and Juan Parra, at the Museum of Vertebrate Zoology, University of California, Berkeley, in collaboration with Peter Jones and Andrew Jarvis (CIAT), and with Karen Richardson (Rainforest CRC).


927.67 meters


Name Units Min Max Scale Description
bio01 °C -29* 32* 0.1

Annual mean temperature

bio02 °C 0.9* 21.4* 0.1

Mean diurnal range (mean of monthly (max temp - min temp))

bio03 % 7* 96*

Isothermality (bio02/bio07 * 100)

bio04 °C 0.62* 227.21* 0.01

Temperature seasonality (Standard deviation * 100)

bio05 °C -9.6* 49* 0.1

Max temperature of warmest month

bio06 °C -57.3* 25.8* 0.1

Min temperature of coldest month

bio07 °C 5.3* 72.5* 0.1

Temperature annual range (bio05-bio06)

bio08 °C -28.5* 37.8* 0.1

Mean temperature of wettest quarter

bio09 °C -52.1* 36.6* 0.1

Mean temperature of driest quarter

bio10 °C -14.3* 38.3* 0.1

Mean temperature of warmest quarter

bio11 °C -52.1* 28.9* 0.1

Mean temperature of coldest quarter

bio12 mm 0* 11401*

Annual precipitation

bio13 mm 0* 2949*

Precipitation of wettest month

bio14 mm 0* 752*

Precipitation of driest month

bio15 Coefficient of Variation 0* 265*

Precipitation seasonality

bio16 mm 0* 8019*

Precipitation of wettest quarter

bio17 mm 0* 2495*

Precipitation of driest quarter

bio18 mm 0* 6090*

Precipitation of warmest quarter

bio19 mm 0* 5162*

Precipitation of coldest quarter

* estimated min or max value

Terms of Use

Terms of Use



  • Hijmans, R.J., S.E. Cameron, J.L. Parra, P.G. Jones and A. Jarvis, 2005. Very High Resolution Interpolated Climate Surfaces for Global Land Areas. International Journal of Climatology 25: 1965-1978. doi:10.1002/joc.1276.

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.Image('WORLDCLIM/V1/BIO');
var annualMeanTemperature ='bio01').multiply(0.1);
var visParams = {
  min: -23,
  max: 30,
  palette: ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],
Map.setCenter(71.7, 52.4, 3);
Map.addLayer(annualMeanTemperature, visParams, 'Annual Mean Temperature');
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