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Ambient Weather Monitoring




Rainfall Monitoring for Sri Lanka - Highlights


Based on satellite based rainfall estimates, we present some rainfall monitoring metrics for Sri Lanka below:

  • Total and Anomaly Rainfall for Sri Lanka from January to Last Month.
  • Comparison of Current Year’s rainfall for Sri Lanka with past 5 years.
  • Rainfall deficits and excesses by dekad since May 2020.
  • Cumulatively rainfall excess since May 2020.

More detailed graphs by Season and Province are available as well.

Total and Anomaly Rainfall from January to Last Month.


Click seasonal monitoring link to view Maha Season 2020 graphs.

Cumulatively rainfall excess since May 2020.




Cumulatively rainfall excess since May 2020.

Rainfall deficits and excesses by dekad since May 2020.

Rainfall deficits and excesses by dekad since Jan 2020. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies

Rainfall deficits and excesses by dekad since May 2020. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.