diff --git a/i18n.js b/i18n.js
index d737b93..bce0d1c 100644
--- a/i18n.js
+++ b/i18n.js
@@ -36,7 +36,16 @@ window.TRANSLATIONS = {
     'Do.':               { de: 'Do.',               en: 'Th.' },
     'Fr.':               { de: 'Fr.',               en: 'Fr.' },
     'Sa.':               { de: 'Sa.',               en: 'Sa.' },
-    'So.':               { de: 'So.',               en: 'Su.' }
+    'So.':               { de: 'So.',               en: 'Su.' },
+
+    'Feuchte':           { de: 'Feuchte',           en: 'Humidity' },
+    'Wind':              { de: 'Wind',              en: 'Wind' },
+
+    // 2-letter time-of-day labels (Morgen, Mittag, Abend, Nacht)
+    'Morgen':            { de: 'Mo',                en: 'Mo' },
+    'Mittag':            { de: 'Mi',                en: 'Mi' },
+    'Abend':             { de: 'Ab',                en: 'Ab' },
+    'Nacht':             { de: 'Na',                en: 'Ni' }
 };
 
 window.getTranslation = function(key) {
diff --git a/index.html b/index.html
index 15063bc..74a0da0 100644
--- a/index.html
+++ b/index.html
@@ -1287,6 +1287,9 @@ window.weatherThemes = {
                 var key = els[i].getAttribute('data-i18n');
                 els[i].textContent = t(key);
             }
+            // Trigger a weather refresh so dynamic texts (slot labels, current
+            // weather details) are re-rendered with the new language.
+            if (typeof fetchWeather === 'function') fetchWeather();
         }
 
         function setDebugLanguage(lang) {
@@ -1587,7 +1590,7 @@ window.weatherThemes = {
             var currentHtml = '<div class="weather-current-icon">' + weatherSVG(current.weather_code) + '</div>' +
                 '<div><div class="weather-current-temp">' + Math.round(current.temperature_2m) + '°C</div>' +
                 '<div class="weather-current-detail">' +
-                'Feuchte ' + Math.round(current.relative_humidity_2m) + '% · Wind ' + Math.round(current.wind_speed_10m) + ' km/h</div></div>';
+                t('Feuchte') + ' ' + Math.round(current.relative_humidity_2m) + '% · ' + t('Wind') + ' ' + Math.round(current.wind_speed_10m) + ' km/h</div></div>';
             document.getElementById('weather-current').innerHTML = currentHtml;
 
             // Forecast
@@ -1616,7 +1619,7 @@ window.weatherThemes = {
                     var slotIdx = findHourlyIndex(slotDate, hourly.time);
                     var slotCode = hourly.weather_code[slotIdx];
                     var slotTemp = hourly.temperature_2m[slotIdx];
-                    var slotLabels = ['M', 'Mi', 'A', 'N'];
+                    var slotLabels = [t('Morgen'), t('Mittag'), t('Abend'), t('Nacht')];
                     slotsHtml += '<div class="weather-slot">' +
                         '<div class="weather-slot-icon">' + weatherSVG(slotCode) + '</div>' +
                         '<div class="weather-slot-label">' + slotLabels[i] + '</div>' +