diff --git a/build.gradle b/build.gradle
index 9556695143d..5e2f79906d9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -153,3 +153,4 @@ apply from: file('gradle/documentation/markdown.gradle')
 apply from: file('gradle/documentation/render-javadoc.gradle')
 
 apply from: file('gradle/hacks/findbugs.gradle')
+apply from: file('gradle/hacks/gradle.gradle')
diff --git a/gradle/hacks/gradle.gradle b/gradle/hacks/gradle.gradle
new file mode 100644
index 00000000000..acb93947ac6
--- /dev/null
+++ b/gradle/hacks/gradle.gradle
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */ 
+
+// See LUCENE-9471. We redirect temporary location for gradle
+// so that it doesn't pollute user's tmp. Wipe it during a clean though.
+
+configure(rootProject) {
+  task cleanGradleTmp(type: Delete) {
+    delete fileTree(".gradle/tmp").matching {
+      include "gradle-worker-classpath*"
+    }
+  }
+
+  clean.dependsOn cleanGradleTmp
+}
+
+// Make sure we clean up after running tests.
+allprojects {
+  plugins.withType(JavaPlugin) {
+    def temps = []
+
+    task cleanTaskTmp() {
+      doLast {
+        temps.each { temp ->
+          project.delete fileTree(temp).matching {
+            include "jar_extract*"
+          }
+        }
+      }
+    }
+
+    tasks.withType(Test) {
+      finalizedBy rootProject.cleanGradleTmp, cleanTaskTmp
+      temps += temporaryDir
+    }
+  }
+}
diff --git a/gradlew b/gradlew
index 32be99f1d9a..b275a1259b3 100755
--- a/gradlew
+++ b/gradlew
@@ -102,12 +102,21 @@ Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
 fi
 
+# LUCENE-9471: workaround for gradle leaving junk temp. files behind.
+GRADLE_TEMPDIR=$APP_HOME/.gradle/tmp
+mkdir -p $GRADLE_TEMPDIR
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    GRADLE_TEMPDIR=`cygpath --path --mixed "$GRADLE_TEMPDIR"`
+fi
+DEFAULT_JVM_OPTS="$DEFAULT_JVM_OPTS \"-Djava.io.tmpdir=$GRADLE_TEMPDIR\""
+
 # LUCENE-9266: verify and download the gradle wrapper jar if we don't have one.
 if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
 fi
 GRADLE_WRAPPER_JAR=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 if ! $JAVACMD --source 11 $APP_HOME/buildSrc/src/main/java/org/apache/lucene/gradle/WrapperDownloader.java $GRADLE_WRAPPER_JAR ; then
+    echo "\nSomething went wrong. Make sure you're using Java 11 or later."
     exit $?
 fi
 
diff --git a/gradlew.bat b/gradlew.bat
index 1f58301d4bc..6f950711b44 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -32,6 +32,11 @@ set APP_HOME=%DIRNAME%
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
+@rem LUCENE-9471: workaround for gradle leaving junk temp. files behind.
+SET GRADLE_TEMPDIR=%DIRNAME%\.gradle\tmp
+IF NOT EXIST "%GRADLE_TEMPDIR%" MKDIR %GRADLE_TEMPDIR%
+SET DEFAULT_JVM_OPTS=%DEFAULT_JVM_OPTS% -Djava.io.tmpdir=%GRADLE_TEMPDIR%
+
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome