FRA9 · 18/08/2026 · Climate
Drought affected 77% of France by mid-August
Record heat, missing rainfall and exceptionally dry soils define the summer climate picture.
See the essentials at a glance
Updated
FRA9Editorial standardsReport a correction
Reading time estimates the main text; tables, tools, references and questions take additional time.
key points: 77 % · Record July · Soils · Water
77%: soil area in mid-August
The figure comes from Météo-France’s 18 August 2026 update: by mid-August, 77% of the monitored territory had soil drought with a return period exceeding twenty-five years. This is not the share of people without water or municipalities under restrictions. The source refers to national territory without specifying overseas coverage, so it does not establish this rate for every French territory. The report therefore preserves a summer snapshot, not a map of conditions on 18 October.
Rapid spread, not a fixed annual forecast
The monitored share rose from 4% on 1 June to 30% on 1 July, 65% on 1 August and 77% by mid-August. This describes the spatial spread of a drought threshold, not an equivalent percentage loss of available water. A return period above twenty-five years is a statistical rarity measure; it does not promise twenty-four drought-free years afterwards. Comparisons with other years require the same indicator, the same point in the season and the same monitored area.
The mechanism: little rain and greater water demand
Météo-France links the drying to summer rainfall shortages and high temperatures. An isolated thunderstorm does not necessarily produce lasting relief: distribution, intensity, soil condition and vegetation affect how much water remains available. The June–August climate review places the mid-August update in the full season, but must not be represented as a document already available on 18 August. Rainfall totals, soil moisture and groundwater levels remain three separate measurements, even when they respond to some of the same weather conditions.
Soils, rivers and aquifers do not move together
Agricultural drought concerns water in near-surface soil layers; hydrological drought concerns rivers, lakes or groundwater. BRGM monitors aquifers through observation points and monthly reference levels, not Météo-France’s percentage of drought-affected soils. Its 1 September bulletin is therefore later complementary evidence, not a conversion of the “77%” figure. Rain can moisten the surface without immediately replenishing a deep aquifer; conversely, a still-supported aquifer does not rule out crop stress. These indicators should be read together without merging their denominators.
For an actual water use, check the address and order
A national climate indicator does not determine whether someone may water a garden, fill a pool or wash a vehicle at a particular address. The official VigiEau service identifies restrictions by place and use; the local framework and order in force matter. Scientific observations and administrative rules must therefore remain distinct. An old drought map, however striking, cannot authorise a water use today or establish that one prohibition applies across France. Consult the current local information before acting rather than extrapolating from August’s national percentage.
What autumn still needs to establish
Useful follow-up now concerns sustained rainfall, soil rewetting, river flows and the actual start of aquifer recharge. Improvement in one indicator is insufficient to declare all agricultural, forest or hydrological effects over. Read the next Météo-France update, BRGM’s monthly bulletin and local restrictions with their respective dates. This remains the article of 18 August 2026: the 18 October source check does not turn its “77%” into a current measurement or imply that every place has recovered at the same speed.
Read next
