diff --git a/src/openrct2/actions/ClimateSetAction.cpp b/src/openrct2/actions/ClimateSetAction.cpp
deleted file mode 100644
index 960c499303..0000000000
--- a/src/openrct2/actions/ClimateSetAction.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-/*****************************************************************************
- * Copyright (c) 2014-2025 OpenRCT2 developers
- *
- * For a complete list of all authors, please refer to contributors.md
- * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
- *
- * OpenRCT2 is licensed under the GNU General Public License version 3.
- *****************************************************************************/
-
-#include "ClimateSetAction.h"
-
-#include "../Diagnostic.h"
-#include "../GameState.h"
-
-using namespace OpenRCT2;
-
-ClimateSetAction::ClimateSetAction(ClimateType climate)
-    : _climate(climate)
-{
-}
-
-void ClimateSetAction::AcceptParameters(GameActionParameterVisitor& visitor)
-{
-    visitor.Visit("climate", _climate);
-}
-
-uint16_t ClimateSetAction::GetActionFlags() const
-{
-    return GameAction::GetActionFlags();
-}
-
-void ClimateSetAction::Serialise(DataSerialiser& stream)
-{
-    GameAction::Serialise(stream);
-
-    stream << DS_TAG(_climate);
-}
-
-GameActions::Result ClimateSetAction::Query() const
-{
-    if (_climate >= ClimateType::Count)
-    {
-        LOG_ERROR("Invalid climate type %u", _climate);
-        return GameActions::Result(GameActions::Status::InvalidParameters, STR_INVALID_CLIMATE_ID, STR_ERR_VALUE_OUT_OF_RANGE);
-    }
-
-    return GameActions::Result();
-}
-
-GameActions::Result ClimateSetAction::Execute() const
-{
-    ClimateReset();
-
-    GfxInvalidateScreen();
-
-    return GameActions::Result();
-}
diff --git a/src/openrct2/actions/ClimateSetAction.h b/src/openrct2/actions/ClimateSetAction.h
deleted file mode 100644
index 049746b612..0000000000
--- a/src/openrct2/actions/ClimateSetAction.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*****************************************************************************
- * Copyright (c) 2014-2025 OpenRCT2 developers
- *
- * For a complete list of all authors, please refer to contributors.md
- * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
- *
- * OpenRCT2 is licensed under the GNU General Public License version 3.
- *****************************************************************************/
-
-#pragma once
-
-#include "../world/Climate.h"
-#include "GameAction.h"
-
-class ClimateSetAction final : public GameActionBase<GameCommand::SetClimate>
-{
-private:
-    ClimateType _climate{};
-
-public:
-    ClimateSetAction() = default;
-    ClimateSetAction(ClimateType climate);
-
-    void AcceptParameters(GameActionParameterVisitor& visitor) override;
-
-    uint16_t GetActionFlags() const override;
-
-    void Serialise(DataSerialiser& stream) override;
-    OpenRCT2::GameActions::Result Query() const override;
-    OpenRCT2::GameActions::Result Execute() const override;
-};
diff --git a/src/openrct2/actions/GameActionRegistry.cpp b/src/openrct2/actions/GameActionRegistry.cpp
index 810c3a9a3a..8a566732df 100644
--- a/src/openrct2/actions/GameActionRegistry.cpp
+++ b/src/openrct2/actions/GameActionRegistry.cpp
@@ -15,7 +15,6 @@
 #include "BannerSetStyleAction.h"
 #include "CheatSetAction.h"
 #include "ClearAction.h"
-#include "ClimateSetAction.h"
 #include "CustomAction.h"
 #include "FootpathAdditionPlaceAction.h"
 #include "FootpathAdditionRemoveAction.h"
@@ -136,7 +135,6 @@ namespace OpenRCT2::GameActions
         REGISTER_ACTION(BannerSetColourAction);
         REGISTER_ACTION(BannerSetNameAction);
         REGISTER_ACTION(BannerSetStyleAction);
-        REGISTER_ACTION(ClimateSetAction);
         REGISTER_ACTION(FootpathPlaceAction);
         REGISTER_ACTION(FootpathLayoutPlaceAction);
         REGISTER_ACTION(FootpathRemoveAction);
diff --git a/src/openrct2/libopenrct2.vcxproj b/src/openrct2/libopenrct2.vcxproj
index 6e387fc8d8..0cc1a5d7a6 100644
--- a/src/openrct2/libopenrct2.vcxproj
+++ b/src/openrct2/libopenrct2.vcxproj
@@ -84,7 +84,6 @@
     <ClInclude Include="actions\BannerSetStyleAction.h" />
     <ClInclude Include="actions\CheatSetAction.h" />
     <ClInclude Include="actions\ClearAction.h" />
-    <ClInclude Include="actions\ClimateSetAction.h" />
     <ClInclude Include="actions\CustomAction.h" />
     <ClInclude Include="actions\FootpathLayoutPlaceAction.h" />
     <ClInclude Include="actions\FootpathPlaceAction.h" />
@@ -662,7 +661,6 @@
     <ClCompile Include="actions\BannerSetStyleAction.cpp" />
     <ClCompile Include="actions\CheatSetAction.cpp" />
     <ClCompile Include="actions\ClearAction.cpp" />
-    <ClCompile Include="actions\ClimateSetAction.cpp" />
     <ClCompile Include="actions\CustomAction.cpp" />
     <ClCompile Include="actions\FootpathAdditionPlaceAction.cpp" />
     <ClCompile Include="actions\FootpathAdditionRemoveAction.cpp" />
diff --git a/src/openrct2/park/ParkFile.cpp b/src/openrct2/park/ParkFile.cpp
index f5c67aa9c6..741e4bbe92 100644
--- a/src/openrct2/park/ParkFile.cpp
+++ b/src/openrct2/park/ParkFile.cpp
@@ -864,7 +864,7 @@ namespace OpenRCT2
                 if (version < kClimateObjectsVersion)
                 {
                     // Legacy climate is converted elsewhere, so we can skip it here.
-                    cs.Ignore<ClimateType>();
+                    cs.Ignore<RCT12::ClimateType>();
                 }
 
                 cs.ReadWrite(gameState.WeatherUpdateTimer);
diff --git a/src/openrct2/world/Climate.h b/src/openrct2/world/Climate.h
index 7c2e2ca40f..e68c5faa26 100644
--- a/src/openrct2/world/Climate.h
+++ b/src/openrct2/world/Climate.h
@@ -14,16 +14,6 @@
 #include <array>
 #include <cstdint>
 
-// TODO: refactor usage and remove
-enum class ClimateType : uint8_t
-{
-    CoolAndWet,
-    Warm,
-    HotAndDry,
-    Cold,
-    Count
-};
-
 enum class WeatherType : uint8_t
 {
     Sunny,