{"id":61054,"date":"2026-07-28T10:02:33","date_gmt":"2026-07-28T08:02:33","guid":{"rendered":"https:\/\/alertes-meteo.com\/?page_id=61054"},"modified":"2026-07-28T11:20:09","modified_gmt":"2026-07-28T09:20:09","slug":"ecart-a-la-moyenne-des-temperatures-en-aout-depuis-1921-en-france-un-mois-dete-toujours-plus-chaud","status":"publish","type":"page","link":"https:\/\/alertes-meteo.com\/index.php\/climatologie\/ecart-a-la-moyenne-des-temperatures-en-aout-depuis-1921-en-france-un-mois-dete-toujours-plus-chaud\/","title":{"rendered":"\u00c9cart \u00e0 la moyenne des temp\u00e9ratures en ao\u00fbt depuis 1921 en France : un mois d&rsquo;\u00e9t\u00e9 toujours plus chaud"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1575px;margin-left: calc(-5% \/ 2 );margin-right: calc(-5% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-blend:overlay;--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.375%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.375%;--awb-width-medium:100%;--awb-spacing-right-medium:2.375%;--awb-spacing-left-medium:2.375%;--awb-width-small:100%;--awb-spacing-right-small:2.375%;--awb-spacing-left-small:2.375%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><h1 align=\"center\"><b>\u00c9cart \u00e0 la moyenne des temp\u00e9ratures en ao\u00fbt<\/b><\/h1>\n<p class=\"isSelectedEnd\"><strong>Ao\u00fbt<\/strong> est traditionnellement l&rsquo;un des mois les plus chauds de l&rsquo;ann\u00e9e en France. Il est souvent marqu\u00e9 par des \u00e9pisodes de fortes chaleurs, des s\u00e9cheresses et parfois des orages violents. L&rsquo;analyse des \u00e9carts \u00e0 la moyenne des temp\u00e9ratures depuis 1921 montre une \u00e9volution sans \u00e9quivoque : les mois d&rsquo;ao\u00fbt sont devenus progressivement plus chauds. Les anomalies positives se multiplient depuis plusieurs d\u00e9cennies, confirmant l&rsquo;influence du r\u00e9chauffement climatique sur le climat fran\u00e7ais.<\/p>\n<h2>Une hausse durable des temp\u00e9ratures en ao\u00fbt<\/h2>\n<h3>Des anomalies thermiques de plus en plus fr\u00e9quentes<\/h3>\n<p class=\"isSelectedEnd\">L&rsquo;<strong>\u00e9cart \u00e0 la moyenne des temp\u00e9ratures<\/strong>, ou anomalie thermique, correspond \u00e0 la diff\u00e9rence entre la temp\u00e9rature moyenne observ\u00e9e et la normale climatique de r\u00e9f\u00e9rence.<\/p>\n<p class=\"isSelectedEnd\">Entre 1921 et la fin des ann\u00e9es 1970, les mois d&rsquo;ao\u00fbt alternaient entre p\u00e9riodes plus fra\u00eeches et plus chaudes que la normale. Depuis les ann\u00e9es 1980, les anomalies positives sont devenues largement majoritaires. Plusieurs mois d&rsquo;ao\u00fbt figurent d\u00e9sormais parmi les plus chauds jamais enregistr\u00e9s en France, avec des temp\u00e9ratures d\u00e9passant parfois largement les normales saisonni\u00e8res.<\/p>\n<h3>Quels sont les impacts de cette \u00e9volution ?<\/h3>\n<p class=\"isSelectedEnd\">L&rsquo;augmentation des temp\u00e9ratures en ao\u00fbt entra\u00eene de nombreuses cons\u00e9quences :<\/p>\n<ul data-spread=\"false\">\n<li><a href=\"https:\/\/alertes-meteo.com\/index.php\/climatiseur\/canicule-en-france-votre-logement-est-il-vraiment-adapte-a-la-chaleur\/\">une intensification des vagues de chaleur ;<\/a><\/li>\n<li><a href=\"https:\/\/alertes-meteo.com\/index.php\/2026\/07\/25\/canicule-et-feux-de-foret-comment-la-meteo-attise-le-risque-en-france\/\">une aggravation des \u00e9pisodes de s\u00e9cheresse ;<\/a><\/li>\n<li><a href=\"https:\/\/alertes-meteo.com\/index.php\/cartes-meteo\/meteo-des-forets\/\">une hausse du risque d&rsquo;incendies de for\u00eat et de v\u00e9g\u00e9tation<\/a> ;<\/li>\n<li>une pression accrue sur les ressources en eau ;<\/li>\n<li><a href=\"https:\/\/alertes-meteo.com\/index.php\/2026\/07\/26\/registre-canicule-en-france-comment-inscrire-une-personne-fragile-aupres-de-la-mairie\/\">des effets importants sur la sant\u00e9, notamment chez les personnes les plus fragiles<\/a>.<\/li>\n<\/ul>\n<p>Cette \u00e9volution influence \u00e9galement l&rsquo;agriculture, la biodiversit\u00e9, la production d&rsquo;\u00e9nergie et les activit\u00e9s touristiques.<\/p>\n<\/div><!--\n  Graphique interactif WordPress\n  \u00c0 coller dans un bloc \u00ab HTML personnalis\u00e9 \u00bb.\n  Aucune biblioth\u00e8que externe n'est n\u00e9cessaire.\n-->\n<div class=\"aug-widget\" data-aug-chart>\n  <div class=\"aug-header\">\n    <h2>\u00c9cart \u00e0 la moyenne des temp\u00e9ratures en ao\u00fbt depuis 1921 (France)<\/h2>\n    <p>Normale de r\u00e9f\u00e9rence 1991-2020<\/p>\n  <\/div>\n\n  <div class=\"aug-selection\" data-aug-selection aria-live=\"polite\">\n    Cliquez sur une barre pour afficher l\u2019ann\u00e9e et l\u2019\u00e9cart \u00e0 la normale.\n  <\/div>\n\n  <div class=\"aug-scroll\" aria-label=\"Graphique d\u00e9filable horizontalement sur mobile\">\n    <div class=\"aug-stage\">\n      <svg\n        class=\"aug-svg\"\n        data-aug-svg\n        viewBox=\"0 0 1120 500\"\n        role=\"img\"\n        aria-labelledby=\"aug-title aug-desc\"\n        preserveAspectRatio=\"xMidYMid meet\"\n      >\n        <title id=\"aug-title\">Anomalies de temp\u00e9rature en ao\u00fbt en France, de 1921 \u00e0 2025<\/title>\n        <desc id=\"aug-desc\">\n          Histogramme des \u00e9carts \u00e0 la normale 1991-2020. Les valeurs positives sont rouges\n          et les valeurs n\u00e9gatives sont bleues. Chaque barre est interactive.\n        <\/desc>\n      <\/svg>\n      <div class=\"aug-tooltip\" data-aug-tooltip role=\"status\" aria-hidden=\"true\"><\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"aug-legend\" aria-label=\"L\u00e9gende\">\n    <span><i class=\"aug-dot aug-dot-positive\"><\/i> Plus chaud que la normale<\/span>\n    <span><i class=\"aug-dot aug-dot-negative\"><\/i> Plus froid que la normale<\/span>\n  <\/div>\n\n  <p class=\"aug-note\">Ao\u00fbt 2026 n\u2019a pas encore commenc\u00e9 : il n\u2019est pas inclus dans l\u2019histogramme.<\/p>\n  <p class=\"aug-source\">\n    Sources : M\u00e9t\u00e9o-France (valeur 2025) \u2022 Normale climatologique 1991-2020\n  <\/p>\n<\/div>\n\n<style>\n  .aug-widget,\n  .aug-widget * {\n    box-sizing: border-box;\n  }\n\n  .aug-widget {\n    --aug-red: #e85236;\n    --aug-blue: #5c9ae3;\n    --aug-grid: #dfe4ea;\n    --aug-ink: #17202a;\n    --aug-muted: #59636e;\n    width: 100%;\n    max-width: 1180px;\n    margin: 24px auto;\n    padding: clamp(18px, 3vw, 32px);\n    overflow: hidden;\n    color: var(--aug-ink);\n    background: #ffffff;\n    border: 1px solid #e8ebef;\n    border-radius: 18px;\n    box-shadow: 0 12px 34px rgba(23, 32, 42, 0.09);\n    font-family: Arial, Helvetica, sans-serif;\n  }\n\n  .aug-header h2 {\n    margin: 0;\n    font-size: clamp(21px, 2.6vw, 31px);\n    line-height: 1.18;\n    letter-spacing: -0.02em;\n  }\n\n  .aug-header p {\n    margin: 8px 0 0;\n    color: var(--aug-muted);\n    font-size: 15px;\n  }\n\n  .aug-selection {\n    min-height: 49px;\n    margin: 20px 0 12px;\n    padding: 12px 15px;\n    color: #34404c;\n    background: #f5f7fa;\n    border-left: 4px solid #8995a3;\n    border-radius: 9px;\n    font-size: 15px;\n    line-height: 1.4;\n  }\n\n  .aug-selection strong {\n    color: var(--aug-ink);\n  }\n\n  .aug-selection.is-positive {\n    background: #fff3f0;\n    border-left-color: var(--aug-red);\n  }\n\n  .aug-selection.is-negative {\n    background: #eff6ff;\n    border-left-color: var(--aug-blue);\n  }\n\n  .aug-selection.is-neutral {\n    background: #f5f7fa;\n    border-left-color: #707b86;\n  }\n\n  .aug-scroll {\n    width: 100%;\n    overflow-x: auto;\n    overflow-y: hidden;\n    scrollbar-color: #aeb7c2 #edf0f3;\n    scrollbar-width: thin;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .aug-stage {\n    position: relative;\n    width: 100%;\n    min-width: 900px;\n  }\n\n  .aug-svg {\n    display: block;\n    width: 100%;\n    height: auto;\n    overflow: visible;\n    touch-action: pan-x pan-y;\n  }\n\n  .aug-grid-line {\n    stroke: var(--aug-grid);\n    stroke-width: 1;\n    vector-effect: non-scaling-stroke;\n  }\n\n  .aug-zero-line {\n    stroke: #1c2732;\n    stroke-width: 1.7;\n    vector-effect: non-scaling-stroke;\n  }\n\n  .aug-y-label,\n  .aug-x-label,\n  .aug-axis-unit {\n    fill: #68727d;\n    font-family: Arial, Helvetica, sans-serif;\n  }\n\n  .aug-y-label {\n    font-size: 13px;\n    text-anchor: end;\n    dominant-baseline: middle;\n  }\n\n  .aug-x-label {\n    font-size: 11px;\n    text-anchor: middle;\n  }\n\n  .aug-axis-unit {\n    font-size: 12px;\n    font-weight: 700;\n  }\n\n  .aug-bar {\n    cursor: pointer;\n    outline: none;\n  }\n\n  .aug-bar-visible {\n    transition: opacity 0.14s ease, filter 0.14s ease;\n    shape-rendering: geometricPrecision;\n  }\n\n  .aug-bar:hover .aug-bar-visible,\n  .aug-bar:focus .aug-bar-visible,\n  .aug-bar.is-selected .aug-bar-visible {\n    opacity: 1;\n    filter: brightness(0.83);\n  }\n\n  .aug-bar:focus-visible .aug-bar-visible {\n    stroke: #111820;\n    stroke-width: 2;\n    vector-effect: non-scaling-stroke;\n  }\n\n  .aug-hit-area {\n    fill: transparent;\n    pointer-events: all;\n  }\n\n  .aug-tooltip {\n    position: absolute;\n    z-index: 4;\n    width: max-content;\n    max-width: 235px;\n    padding: 10px 12px;\n    color: #ffffff;\n    background: rgba(18, 25, 33, 0.96);\n    border-radius: 9px;\n    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);\n    font-size: 13px;\n    line-height: 1.35;\n    pointer-events: none;\n    opacity: 0;\n    transform: translate(-50%, calc(-100% - 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25,\n          class: \"aug-x-label\"\n        });\n        label.textContent = year;\n        labelsGroup.appendChild(label);\n      });\n      svg.appendChild(labelsGroup);\n\n      svg.addEventListener(\"click\", (event) => {\n        if (event.target === svg || event.target.classList.contains(\"aug-grid-line\")) {\n          removeSelection();\n          hideTooltip();\n        }\n      });\n    });\n  })();\n<\/script><div class=\"fusion-text fusion-text-2\"><p><strong><a href=\"https:\/\/alertes-meteo.com\/index.php\/climatologie\/ecart-a-la-moyenne-des-temperatures-en-juillet-depuis-1921-en-france-un-rechauffement-estival-de-plus-en-plus-marque\/\">Pour le mois de juillet<\/a><\/strong><\/p>\n<p style=\"text-align: right;\"><a href=\"https:\/\/alertes-meteo.com\/index.php\/climatologie\/ecart-a-la-moyenne-des-temperatures-en-septembre-depuis-1921-en-france-un-debut-dautomne-de-plus-en-plus-doux\/\">Pour le mois de septembre<\/a><\/p>\n<\/div><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8902396130105212\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- bas de page -->\n<ins class=\"adsbygoogle\"\n     style=\"display:block\"\n     data-ad-client=\"ca-pub-8902396130105212\"\n     data-ad-slot=\"7724440717\"\n     data-ad-format=\"auto\"\n     data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><div class=\"fusion-text fusion-text-3\"><h2>Comment interpr\u00e9ter un \u00e9cart \u00e0 la moyenne ?<\/h2>\n<p class=\"isSelectedEnd\">Une anomalie positive signifie que la temp\u00e9rature moyenne du mois de juillet est sup\u00e9rieure \u00e0 la normale climatique. Cela n&#8217;emp\u00eache pas la survenue d&rsquo;orages, de passages perturb\u00e9s ou de p\u00e9riodes temporairement plus fra\u00eeches.<\/p>\n<p class=\"isSelectedEnd\">\u00c0 l&rsquo;inverse, une anomalie n\u00e9gative indique un mois globalement plus frais que la moyenne, un ph\u00e9nom\u00e8ne devenu plus rare au cours des derni\u00e8res d\u00e9cennies.<\/p>\n<h2>FAQ<\/h2>\n<h3>Que signifie une anomalie positive en juillet ?<\/h3>\n<p class=\"isSelectedEnd\">Elle indique que la temp\u00e9rature moyenne du mois est sup\u00e9rieure \u00e0 la normale climatique de r\u00e9f\u00e9rence.<\/p>\n<h3>Pourquoi les mois de juillet deviennent-ils plus chauds ?<\/h3>\n<p class=\"isSelectedEnd\">La principale explication r\u00e9side dans le r\u00e9chauffement climatique, qui favorise une augmentation progressive des temp\u00e9ratures moyennes et une intensification des \u00e9pisodes de chaleur.<\/p>\n<h3>Les canicules sont-elles plus fr\u00e9quentes ?<\/h3>\n<p class=\"isSelectedEnd\">Oui. Les observations montrent une augmentation de la fr\u00e9quence, de l&rsquo;intensit\u00e9 et parfois de la dur\u00e9e des \u00e9pisodes caniculaires en France.<\/p>\n<h3>Depuis quand cette \u00e9volution est-elle visible ?<\/h3>\n<p class=\"isSelectedEnd\">La tendance au r\u00e9chauffement s&rsquo;accentue nettement \u00e0 partir des ann\u00e9es 1980, avec une succession de mois de juillet affichant des anomalies positives.<\/p>\n<h3>Quels secteurs sont les plus concern\u00e9s ?<\/h3>\n<p class=\"isSelectedEnd\">La sant\u00e9 publique, l&rsquo;agriculture, les ressources en eau, les for\u00eats, les infrastructures et la biodiversit\u00e9 sont particuli\u00e8rement sensibles \u00e0 cette hausse des temp\u00e9ratures.<\/p>\n<h2>Conclusion<\/h2>\n<p class=\"isSelectedEnd\">L&rsquo;\u00e9volution des temp\u00e9ratures en juillet depuis 1921 met en \u00e9vidence une augmentation durable des anomalies positives en France. Les mois de juillet sont aujourd&rsquo;hui plus chauds qu&rsquo;au si\u00e8cle dernier, avec une fr\u00e9quence accrue des fortes chaleurs et des canicules. Cette \u00e9volution constitue l&rsquo;un des indicateurs les plus visibles du changement climatique.<\/p>\n<h2>Consultez nos analyses climatiques<\/h2>\n<p>Retrouvez nos graphiques climatiques, nos statistiques m\u00e9t\u00e9o, nos <a href=\"https:\/\/alertes-meteo.com\/index.php\/2026\/07\/27\/previsions-saisonnieres\/\">pr\u00e9visions saisonni\u00e8res<\/a> et nos analyses d\u00e9taill\u00e9es pour suivre l&rsquo;\u00e9volution des temp\u00e9ratures en France et mieux comprendre les tendances du climat sur le long terme.<\/p>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":61055,"parent":60843,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"\u00c9cart \u00e0 la moyenne des temp\u00e9ratures en ao\u00fbt en France depuis 1921 : \u00e9volution et anomalies climatiques","_seopress_titles_desc":"Analysez l'\u00e9volution des temp\u00e9ratures en ao\u00fbt en France depuis 1921 et d\u00e9couvrez les \u00e9carts \u00e0 la moyenne qui illustrent le r\u00e9chauffement climatique.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"temperature mer","footnotes":""},"class_list":["post-61054","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/61054","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/comments?post=61054"}],"version-history":[{"count":4,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/61054\/revisions"}],"predecessor-version":[{"id":61095,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/61054\/revisions\/61095"}],"up":[{"embeddable":true,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/pages\/60843"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/media\/61055"}],"wp:attachment":[{"href":"https:\/\/alertes-meteo.com\/index.php\/wp-json\/wp\/v2\/media?parent=61054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}