diff --git a/xarray/core/dataarray.py b/xarray/core/dataarray.py
index eae11c0c491..f989990bbd4 100644
--- a/xarray/core/dataarray.py
+++ b/xarray/core/dataarray.py
@@ -7081,7 +7081,8 @@ def rolling(
             (otherwise result is NA). The default, None, is equivalent to
             setting min_periods equal to the size of the window.
         center : bool or Mapping to int, default: False
-            Set the labels at the center of the window.
+            Set the labels at the center of the window. The default, False,
+            sets the labels at the right edge of the window.
         **window_kwargs : optional
             The keyword arguments form of ``dim``.
             One of dim or window_kwargs must be provided.
diff --git a/xarray/core/dataset.py b/xarray/core/dataset.py
index f96b62f701e..b9f932196ad 100644
--- a/xarray/core/dataset.py
+++ b/xarray/core/dataset.py
@@ -10728,7 +10728,8 @@ def rolling(
             (otherwise result is NA). The default, None, is equivalent to
             setting min_periods equal to the size of the window.
         center : bool or Mapping to int, default: False
-            Set the labels at the center of the window.
+            Set the labels at the center of the window. The default, False,
+            sets the labels at the right edge of the window.
         **window_kwargs : optional
             The keyword arguments form of ``dim``.
             One of dim or window_kwargs must be provided.
diff --git a/xarray/core/rolling.py b/xarray/core/rolling.py
index fde87841d32..6186f4dacfe 100644
--- a/xarray/core/rolling.py
+++ b/xarray/core/rolling.py
@@ -282,7 +282,8 @@ def __init__(
             (otherwise result is NA). The default, None, is equivalent to
             setting min_periods equal to the size of the window.
         center : bool, default: False
-            Set the labels at the center of the window.
+            Set the labels at the center of the window. The default, False,
+            sets the labels at the right edge of the window.
 
         Returns
         -------
@@ -793,7 +794,8 @@ def __init__(
             (otherwise result is NA). The default, None, is equivalent to
             setting min_periods equal to the size of the window.
         center : bool or mapping of hashable to bool, default: False
-            Set the labels at the center of the window.
+            Set the labels at the center of the window. The default, False,
+            sets the labels at the right edge of the window.
 
         Returns
         -------