diff --git a/dotfiles/install/install-linux-global.sh b/dotfiles/install/install-linux-global.sh
index bb3ede8..b4cb126 100644
--- a/dotfiles/install/install-linux-global.sh
+++ b/dotfiles/install/install-linux-global.sh
@@ -23,6 +23,8 @@ MARKER_END="# <<< dotfiles (managed) <<<"
 # Select install mode (PS1, banner, or both)
 install_ps1=1
 install_banner=1
+season_mode="dynamic"
+season_choice=""
 if [[ -t 0 ]]; then
   echo "Install options:"
   echo "  1) PS1 only"
@@ -35,6 +37,39 @@ if [[ -t 0 ]]; then
     ""|3) install_ps1=1; install_banner=1 ;;
     *) echo "Invalid choice, using both."; install_ps1=1; install_banner=1 ;;
   esac
+
+  if [[ "$install_ps1" -eq 1 ]]; then
+    echo
+    echo "Season mode:"
+    echo "  1) Dynamic (auto by date)"
+    echo "  2) Static (pick one season)"
+    read -r -p "Choose [1]: " season_mode_choice
+    case "${season_mode_choice}" in
+      2)
+        season_mode="static"
+        echo "Pick a season:"
+        echo "  1) Winter"
+        echo "  2) Spring"
+        echo "  3) Summer"
+        echo "  4) Autumn"
+        read -r -p "Choose [1]: " season_pick
+        case "${season_pick}" in
+          2) season_choice="spring" ;;
+          3) season_choice="summer" ;;
+          4) season_choice="autumn" ;;
+          ""|1) season_choice="winter" ;;
+          *) echo "Invalid choice, using winter."; season_choice="winter" ;;
+        esac
+        ;;
+      ""|1)
+        season_mode="dynamic"
+        ;;
+      *)
+        echo "Invalid choice, using dynamic."
+        season_mode="dynamic"
+        ;;
+    esac
+  fi
 fi
 
 if [[ "$install_banner" -eq 1 ]]; then
@@ -94,8 +129,17 @@ fi
 if [[ "$install_ps1" -eq 1 ]]; then
   cp -f "$SRC_PS1" "$DST_PS1"
   chmod 0644 "$DST_PS1"
+
+  {
+    printf 'PS1_SEASON_MODE=%s\n' "$season_mode"
+    if [[ "$season_mode" == "static" && -n "$season_choice" ]]; then
+      printf 'PS1_SEASON=%s\n' "$season_choice"
+    fi
+  } > /etc/ps1-season
+  chmod 0644 /etc/ps1-season
 else
   rm -f "$DST_PS1"
+  rm -f /etc/ps1-season
 fi
 
 if [[ "$install_banner" -eq 1 ]]; then
diff --git a/dotfiles/install/install-macos-user.sh b/dotfiles/install/install-macos-user.sh
index e029999..8730a0e 100644
--- a/dotfiles/install/install-macos-user.sh
+++ b/dotfiles/install/install-macos-user.sh
@@ -7,14 +7,57 @@ REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
 SRC_PS1="$REPO_ROOT/ps1/ps1.sh"
 DST_DIR="$HOME/.config/ps1"
 DST_PS1="$DST_DIR/ps1.sh"
+SEASON_FILE="$DST_DIR/season"
 
 MARKER_START="# >>> user ps1 (managed) >>>"
 MARKER_END="# <<< user ps1 (managed) <<<"
 
+season_mode="dynamic"
+season_choice=""
+if [[ -t 0 ]]; then
+  echo "Season mode:"
+  echo "  1) Dynamic (auto by date)"
+  echo "  2) Static (pick one season)"
+  read -r -p "Choose [1]: " season_mode_choice
+  case "${season_mode_choice}" in
+    2)
+      season_mode="static"
+      echo "Pick a season:"
+      echo "  1) Winter"
+      echo "  2) Spring"
+      echo "  3) Summer"
+      echo "  4) Autumn"
+      read -r -p "Choose [1]: " season_pick
+      case "${season_pick}" in
+        2) season_choice="spring" ;;
+        3) season_choice="summer" ;;
+        4) season_choice="autumn" ;;
+        ""|1) season_choice="winter" ;;
+        *) echo "Invalid choice, using winter."; season_choice="winter" ;;
+      esac
+      ;;
+    ""|1)
+      season_mode="dynamic"
+      ;;
+    *)
+      echo "Invalid choice, using dynamic."
+      season_mode="dynamic"
+      ;;
+  esac
+fi
+
 mkdir -p "$DST_DIR"
 cp -f "$SRC_PS1" "$DST_PS1"
 chmod 0644 "$DST_PS1"
 
+{
+  printf 'PS1_SEASON_MODE=%s\n' "$season_mode"
+  if [[ "$season_mode" == "static" && -n "$season_choice" ]]; then
+    printf 'PS1_SEASON=%s\n' "$season_choice"
+  fi
+} > "$SEASON_FILE"
+chmod 0644 "$SEASON_FILE"
+
 add_source_block() {
   local file="$1"
   [[ -f "$file" ]] || touch "$file"
diff --git a/dotfiles/ps1/ps1.sh b/dotfiles/ps1/ps1.sh
index 0ca9140..b36f1fc 100644
--- a/dotfiles/ps1/ps1.sh
+++ b/dotfiles/ps1/ps1.sh
@@ -37,6 +37,58 @@ _ps1_has_nf() {
   return 1
 }
 
+# Season selection (dynamic or static)
+#   PS1_SEASON_MODE=dynamic|static
+#   PS1_SEASON= winter|spring|summer|autumn
+# Also reads config from /etc/ps1-season or ~/.config/ps1/season
+_ps1_season_config() {
+  local cfg=""
+  if [[ -r /etc/ps1-season ]]; then
+    cfg="/etc/ps1-season"
+  elif [[ -r "$HOME/.config/ps1/season" ]]; then
+    cfg="$HOME/.config/ps1/season"
+  fi
+
+  if [[ -n "$cfg" ]]; then
+    while IFS='=' read -r k v; do
+      k="${k//[[:space:]]/}"
+      v="${v//[[:space:]]/}"
+      case "$k" in
+        PS1_SEASON_MODE) export PS1_SEASON_MODE="$v" ;;
+        PS1_SEASON) export PS1_SEASON="$v" ;;
+      esac
+    done < "$cfg"
+  fi
+}
+
+_ps1_season_dynamic() {
+  local mm dd m d
+  mm=$(TZ=Europe/Oslo date +%m); dd=$(TZ=Europe/Oslo date +%d)
+  m=$((10#$mm)); d=$((10#$dd))
+
+  if (( m >= 3 && m <= 5 )); then
+    echo "spring"
+  elif (( m >= 6 && m <= 8 )); then
+    echo "summer"
+  elif (( m == 9 || m == 10 || (m == 11 && d < 15) )); then
+    echo "autumn"
+  else
+    echo "winter"
+  fi
+}
+
+_ps1_season() {
+  _ps1_season_config
+  local mode="${PS1_SEASON_MODE:-dynamic}"
+  local season="${PS1_SEASON:-}"
+
+  if [[ "$mode" == "static" && -n "$season" ]]; then
+    echo "$season"
+  else
+    _ps1_season_dynamic
+  fi
+}
+
 # Time-based emoji (Europe/Oslo)
 _ps1_symbol() {
   local hh mm h m
@@ -73,22 +125,48 @@ __PS1_SYM=""
 __PS1_PATH=""
 __PS1_STATUS=0
 __PS1_USE_NF=0
+__PS1_SEASON="winter"
 
 _ps1_set_prompt() {
   local RST="\[\e[0m\]"
 
-  # Two-zone palette
-  # Zone 1: gray-blue pastel (date/time/user)
-  local Z1_BG="\[\e[48;5;61m\]"
-  local Z1_FG="\[\e[38;5;255m\]"
-
-  # Zone 2: turquoise / cool green (host/path)
-  local Z2_BG="\[\e[48;5;37m\]"
-  local Z2_FG="\[\e[38;5;255m\]"
-  local PATH_FG="\[\e[38;5;194m\]"
-
-  # Frame
-  local FRAME="\[\e[38;5;60m\]"
+  # Seasonal palettes (Z1 is darker than Z2)
+  local Z1_BG Z1_FG Z2_BG Z2_FG PATH_FG FRAME
+  case "$__PS1_SEASON" in
+    spring)
+      Z1_BG="\[\e[48;5;71m\]"
+      Z1_FG="\[\e[38;5;255m\]"
+      Z2_BG="\[\e[48;5;120m\]"
+      Z2_FG="\[\e[38;5;255m\]"
+      PATH_FG="\[\e[38;5;193m\]"
+      FRAME="\[\e[38;5;65m\]"
+      ;;
+    summer)
+      Z1_BG="\[\e[48;5;142m\]"
+      Z1_FG="\[\e[38;5;255m\]"
+      Z2_BG="\[\e[48;5;214m\]"
+      Z2_FG="\[\e[38;5;0m\]"
+      PATH_FG="\[\e[38;5;223m\]"
+      FRAME="\[\e[38;5;130m\]"
+      ;;
+    autumn)
+      Z1_BG="\[\e[48;5;95m\]"
+      Z1_FG="\[\e[38;5;255m\]"
+      Z2_BG="\[\e[48;5;173m\]"
+      Z2_FG="\[\e[38;5;255m\]"
+      PATH_FG="\[\e[38;5;223m\]"
+      FRAME="\[\e[38;5;95m\]"
+      ;;
+    *)
+      # winter (default)
+      Z1_BG="\[\e[48;5;61m\]"
+      Z1_FG="\[\e[38;5;255m\]"
+      Z2_BG="\[\e[48;5;37m\]"
+      Z2_FG="\[\e[38;5;255m\]"
+      PATH_FG="\[\e[38;5;194m\]"
+      FRAME="\[\e[38;5;60m\]"
+      ;;
+  esac
 
   # Status colors
   local OK="\[\e[38;5;76m\]"
@@ -122,6 +200,7 @@ _ps1_update() {
   __PS1_STATUS=$?
   __PS1_SYM="$(_ps1_symbol)"
   __PS1_PATH="$(_ps1_path)"
+  __PS1_SEASON="$(_ps1_season)"
   if _ps1_has_nf; then __PS1_USE_NF=1; else __PS1_USE_NF=0; fi
   _ps1_set_prompt
 }