Persistent exceptional warmth across June, July, and August has driven the UK mean summer temperature to 16.48°C through mid-August, 1.88°C above the 1991-2020 average and already exceeding the 2025 record of 16.12°C. Multiple heatwaves produced provisional national June maxima near 37.7°C and frequent tropical nights, with England showing even larger anomalies. Only markedly below-average conditions through the final days of August could prevent a new record, an outcome rendered improbable by current high-pressure patterns and model guidance favoring continued warmth. Official Met Office provisional statistics confirm this trajectory, with traders assigning 95% implied probability reflecting the narrow remaining uncertainty window before seasonal closure.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWill summer 2026 be the UK's hottest summer on record?
Will summer 2026 be the UK's hottest summer on record?
95% chance
NEW
NEW
Sep 30, 2026
95% chance
NEW
NEW
Sep 30, 2026
This market will resolve to "Yes" if the Met Office's mean temperature for the United Kingdom for meteorological summer 2026 (June 1 to August 31, 2026) is the highest for any summer in the Met Office record. Otherwise, this market will resolve to "No".
The current UK summer mean temperature record is 16.12°C, set in summer 2025. A UK summer 2026 mean temperature greater than 16.12°C is necessary and sufficient for a "Yes" resolution; a value equal to or below 16.12°C resolves "No".
The primary resolution source will be the figure in the "sum" (summer) column of the row for year "2026" in the Met Office UK mean air temperature series (https://www.metoffice.gov.uk/pub/data/weather/uk/climate/datasets/Tmean/date/UK.txt). The market will resolve on the first value the Met Office publishes for summer 2026 in this series and will not be affected by any subsequent revision.
If the Met Office renders this series permanently unavailable, other official Met Office data for the UK summer 2026 mean temperature may be used. If no figure for summer 2026 has been published by the Met Office by September 30, 2026, 11:59 PM ET, this market will resolve based on a consensus of credible reporting.Persistent exceptional warmth across June, July, and August has driven the UK mean summer temperature to 16.48°C through mid-August, 1.88°C above the 1991-2020 average and already exceeding the 2025 record of 16.12°C. Multiple heatwaves produced provisional national June maxima near 37.7°C and frequent tropical nights, with England showing even larger anomalies. Only markedly below-average conditions through the final days of August could prevent a new record, an outcome rendered improbable by current high-pressure patterns and model guidance favoring continued warmth. Official Met Office provisional statistics confirm this trajectory, with traders assigning 95% implied probability reflecting the narrow remaining uncertainty window before seasonal closure.
This market will resolve to "Yes" if the Met Office's mean temperature for the United Kingdom for meteorological summer 2026 (June 1 to August 31, 2026) is the highest for any summer in the Met Office record. Otherwise, this market will resolve to "No".
The current UK summer mean temperature record is 16.12°C, set in summer 2025. A UK summer 2026 mean temperature greater than 16.12°C is necessary and sufficient for a "Yes" resolution; a value equal to or below 16.12°C resolves "No".
The primary resolution source will be the figure in the "sum" (summer) column of the row for year "2026" in the Met Office UK mean air temperature series (https://www.metoffice.gov.uk/pub/data/weather/uk/climate/datasets/Tmean/date/UK.txt). The market will resolve on the first value the Met Office publishes for summer 2026 in this series and will not be affected by any subsequent revision.
If the Met Office renders this series permanently unavailable, other official Met Office data for the UK summer 2026 mean temperature may be used. If no figure for summer 2026 has been published by the Met Office by September 30, 2026, 11:59 PM ET, this market will resolve based on a consensus of credible reporting.
The current UK summer mean temperature record is 16.12°C, set in summer 2025. A UK summer 2026 mean temperature greater than 16.12°C is necessary and sufficient for a "Yes" resolution; a value equal to or below 16.12°C resolves "No".
The primary resolution source will be the figure in the "sum" (summer) column of the row for year "2026" in the Met Office UK mean air temperature series (https://www.metoffice.gov.uk/pub/data/weather/uk/climate/datasets/Tmean/date/UK.txt). The market will resolve on the first value the Met Office publishes for summer 2026 in this series and will not be affected by any subsequent revision.
If the Met Office renders this series permanently unavailable, other official Met Office data for the UK summer 2026 mean temperature may be used. If no figure for summer 2026 has been published by the Met Office by September 30, 2026, 11:59 PM ET, this market will resolve based on a consensus of credible reporting.
Market Opened: Aug 11, 2026, 10:59 AM ET
Volume
$1,198End Date
Oct 1, 2026Market Opened
Aug 11, 2026, 10:59 AM ETResolver
0x65070BE91...This market will resolve to "Yes" if the Met Office's mean temperature for the United Kingdom for meteorological summer 2026 (June 1 to August 31, 2026) is the highest for any summer in the Met Office record. Otherwise, this market will resolve to "No".
The current UK summer mean temperature record is 16.12°C, set in summer 2025. A UK summer 2026 mean temperature greater than 16.12°C is necessary and sufficient for a "Yes" resolution; a value equal to or below 16.12°C resolves "No".
The primary resolution source will be the figure in the "sum" (summer) column of the row for year "2026" in the Met Office UK mean air temperature series (https://www.metoffice.gov.uk/pub/data/weather/uk/climate/datasets/Tmean/date/UK.txt). The market will resolve on the first value the Met Office publishes for summer 2026 in this series and will not be affected by any subsequent revision.
If the Met Office renders this series permanently unavailable, other official Met Office data for the UK summer 2026 mean temperature may be used. If no figure for summer 2026 has been published by the Met Office by September 30, 2026, 11:59 PM ET, this market will resolve based on a consensus of credible reporting.Persistent exceptional warmth across June, July, and August has driven the UK mean summer temperature to 16.48°C through mid-August, 1.88°C above the 1991-2020 average and already exceeding the 2025 record of 16.12°C. Multiple heatwaves produced provisional national June maxima near 37.7°C and frequent tropical nights, with England showing even larger anomalies. Only markedly below-average conditions through the final days of August could prevent a new record, an outcome rendered improbable by current high-pressure patterns and model guidance favoring continued warmth. Official Met Office provisional statistics confirm this trajectory, with traders assigning 95% implied probability reflecting the narrow remaining uncertainty window before seasonal closure.
This market will resolve to "Yes" if the Met Office's mean temperature for the United Kingdom for meteorological summer 2026 (June 1 to August 31, 2026) is the highest for any summer in the Met Office record. Otherwise, this market will resolve to "No".
The current UK summer mean temperature record is 16.12°C, set in summer 2025. A UK summer 2026 mean temperature greater than 16.12°C is necessary and sufficient for a "Yes" resolution; a value equal to or below 16.12°C resolves "No".
The primary resolution source will be the figure in the "sum" (summer) column of the row for year "2026" in the Met Office UK mean air temperature series (https://www.metoffice.gov.uk/pub/data/weather/uk/climate/datasets/Tmean/date/UK.txt). The market will resolve on the first value the Met Office publishes for summer 2026 in this series and will not be affected by any subsequent revision.
If the Met Office renders this series permanently unavailable, other official Met Office data for the UK summer 2026 mean temperature may be used. If no figure for summer 2026 has been published by the Met Office by September 30, 2026, 11:59 PM ET, this market will resolve based on a consensus of credible reporting.
The current UK summer mean temperature record is 16.12°C, set in summer 2025. A UK summer 2026 mean temperature greater than 16.12°C is necessary and sufficient for a "Yes" resolution; a value equal to or below 16.12°C resolves "No".
The primary resolution source will be the figure in the "sum" (summer) column of the row for year "2026" in the Met Office UK mean air temperature series (https://www.metoffice.gov.uk/pub/data/weather/uk/climate/datasets/Tmean/date/UK.txt). The market will resolve on the first value the Met Office publishes for summer 2026 in this series and will not be affected by any subsequent revision.
If the Met Office renders this series permanently unavailable, other official Met Office data for the UK summer 2026 mean temperature may be used. If no figure for summer 2026 has been published by the Met Office by September 30, 2026, 11:59 PM ET, this market will resolve based on a consensus of credible reporting.
Volume
$1,198End Date
Oct 1, 2026Market Opened
Aug 11, 2026, 10:59 AM ETResolver
0x65070BE91...Persistent exceptional warmth across June, July, and August has driven the UK mean summer temperature to 16.48°C through mid-August, 1.88°C above the 1991-2020 average and already exceeding the 2025 record of 16.12°C. Multiple heatwaves produced provisional national June maxima near 37.7°C and frequent tropical nights, with England showing even larger anomalies. Only markedly below-average conditions through the final days of August could prevent a new record, an outcome rendered improbable by current high-pressure patterns and model guidance favoring continued warmth. Official Met Office provisional statistics confirm this trajectory, with traders assigning 95% implied probability reflecting the narrow remaining uncertainty window before seasonal closure.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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