diff --git a/R/NcDataReader.R b/R/NcDataReader.R
index d0455e51ce15e0ae60ee28fd4961e6fd7eaf09aa..82131288a7e8b53d1edb9fc6467fd8a594e3b631 100644
--- a/R/NcDataReader.R
+++ b/R/NcDataReader.R
@@ -157,6 +157,9 @@ NcDataReader <- function(file_path = NULL, file_object = NULL,
           units <- 'mins'
         } else if (units == 'day') {
           units <- 'days'
+        } else if (units %in% c('month', 'months')) {
+          result <- result * 30.5
+          units <- 'days'
         }
 
         new_array <- rep(as.POSIXct(parts[2]), length(result)) +