diff --git a/xarray/tests/test_formatting.py b/xarray/tests/test_formatting.py
index a5312abb1a1..1ee6c86d064 100644
--- a/xarray/tests/test_formatting.py
+++ b/xarray/tests/test_formatting.py
@@ -475,14 +475,14 @@ def test_array_repr(self) -> None:
         if ON_WINDOWS:
             expected = dedent(
                 """\
-            <xarray.DataArray (1, 2) (test: 1)> Size: 8B
+            <xarray.DataArray (1, 2) (test: 1)> Size: 4B
             array([0])
             Dimensions without coordinates: test"""
             )
         else:
             expected = dedent(
                 """\
-            <xarray.DataArray (1, 2) (test: 1)> Size: 4B
+            <xarray.DataArray (1, 2) (test: 1)> Size: 8B
             array([0])
             Dimensions without coordinates: test"""
             )
@@ -499,12 +499,21 @@ def test_array_repr(self) -> None:
 
         with xr.set_options(display_expand_data=False):
             actual = formatting.array_repr(ds[(1, 2)])
-            expected = dedent(
-                """\
-            <xarray.DataArray (1, 2) (test: 1)> Size: 8B
-            0
-            Dimensions without coordinates: test"""
-            )
+            if ON_WINDOWS:
+                expected = dedent(
+                    """\
+                <xarray.DataArray (1, 2) (test: 1)> Size: 4B
+                0
+                Dimensions without coordinates: test"""
+                )
+
+            else:
+                expected = dedent(
+                    """\
+                <xarray.DataArray (1, 2) (test: 1)> Size: 8B
+                0
+                Dimensions without coordinates: test"""
+                )
 
             assert actual == expected
 
@@ -718,8 +727,9 @@ def test__mapping_repr(display_max_rows, n_vars, n_attr) -> None:
         dims_values = formatting.dim_summary_limited(
             ds, col_width=col_width + 1, max_rows=display_max_rows
         )
+        expected_size = "640B" if ON_WINDOWS else "1kB"
         expected = f"""\
-<xarray.Dataset> Size: 1kB
+<xarray.Dataset> Size: {expected_size}
 {dims_start}({dims_values})
 Coordinates: ({n_vars})
 Data variables: ({n_vars})
diff --git a/xarray/tests/test_variable.py b/xarray/tests/test_variable.py
index e15de077900..f2754d26483 100644
--- a/xarray/tests/test_variable.py
+++ b/xarray/tests/test_variable.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import sys
 import warnings
 from abc import ABC
 from copy import copy, deepcopy
@@ -58,6 +59,8 @@
     [{"x": (3, 1), "z": 2}, ((3, 1), (0, 0), (2, 2))],
 ]
 
+ON_WINDOWS = sys.platform == "win32"
+
 
 @pytest.fixture
 def var():
@@ -1228,15 +1231,26 @@ def test_as_variable(self):
 
     def test_repr(self):
         v = Variable(["time", "x"], [[1, 2, 3], [4, 5, 6]], {"foo": "bar"})
-        expected = dedent(
+        if ON_WINDOWS:
+            expected = dedent(
+                """
+            <xarray.Variable (time: 2, x: 3)> Size: 24B
+            array([[1, 2, 3],
+                [4, 5, 6]])
+            Attributes:
+                foo:      bar
             """
-        <xarray.Variable (time: 2, x: 3)> Size: 48B
-        array([[1, 2, 3],
-               [4, 5, 6]])
-        Attributes:
-            foo:      bar
-        """
-        ).strip()
+            ).strip()
+        else:
+            expected = dedent(
+                """
+            <xarray.Variable (time: 2, x: 3)> Size: 48B
+            array([[1, 2, 3],
+                [4, 5, 6]])
+            Attributes:
+                foo:      bar
+            """
+            ).strip()
         assert expected == repr(v)
 
     def test_repr_lazy_data(self):