diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 9981d42651..865bea0114 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -22,6 +22,7 @@
 - Fix: [#25173] Desync when placing a park entrance in multiplayer.
 - Fix: [#25179] The LIM Launched Roller Coaster inline twists have incorrect wooden support clearance heights (original bug).
 - Fix: [#25207] Building a block brake on an LIM coaster does not automatically switch it to powered launch block sectioned mode.
+- Fix: [#25238] The chance of thunder and lightning effects happening is lower than vanilla.
 
 0.4.26 (2025-09-06)
 ------------------------------------------------------------------------
diff --git a/src/openrct2/world/Climate.cpp b/src/openrct2/world/Climate.cpp
index 02917f6676..a142484ef5 100644
--- a/src/openrct2/world/Climate.cpp
+++ b/src/openrct2/world/Climate.cpp
@@ -211,7 +211,7 @@ void ClimateUpdate()
     {
         // Create new thunder and lightning. Their amount is scaled inversely proportional
         // to the game speed, otherwise they become annoying at very high speeds
-        if (uint32_t randomNumber = UtilRand(); (randomNumber & 0xFFFF) <= (0x1B4u >> gGameSpeed))
+        if (uint32_t randomNumber = UtilRand(); (randomNumber & 0xFFFF) <= (0x1B4u >> (gGameSpeed - 1)))
         {
             randomNumber >>= 16;
             _thunderTimer = 43 + (randomNumber % 64);