**August 2026 set a new global surface temperature record as the warmest August in the instrumental era, according to the Copernicus Climate Change Service (C3S) ERA5 reanalysis, the primary dataset used for such rankings.** The month reached approximately 1.65°C above pre-industrial levels, exceeding the prior August 2024 benchmark by a substantial margin amid a rapidly strengthening El Niño event that amplified ocean heat content. Daily extra-polar sea surface temperatures hit an all-time high of 21.1°C on August 22—surpassing the March 2024 peak—while land and ocean anomalies aligned to produce the highest monthly global mean on record at roughly 16.96°C. This outcome reflects the combined effects of long-term anthropogenic warming and the emerging El Niño, which boosted tropical Pacific temperatures and shifted atmospheric circulation patterns. Historical context shows August normally ranks among the warmest months seasonally, yet 2026 surpassed prior peaks by a clear margin across multiple indicators, including widespread Northern Hemisphere heatwaves. Trader consensus at 98.2% for first-hottest reflects these verified observations and the low likelihood of dataset revisions overturning the ranking. Realistic challenges include minor adjustments in final processing from agencies like NASA GISS or NOAA, or divergent rankings in satellite lower-troposphere records (e.g., UAH placing it second), though surface datasets show a decisive lead unlikely to flip.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated2026 August 1st, 2nd, 3rd hottest on record?
1st hottest 98.2%
3rd hottest 1.7%
4th or lower <1%
2nd hottest <1%
$2,268 Vol.
$2,268 Vol.
1st hottest
98%
2nd hottest
<1%
3rd hottest
2%
4th or lower
1%
1st hottest 98.2%
3rd hottest 1.7%
4th or lower <1%
2nd hottest <1%
$2,268 Vol.
$2,268 Vol.
1st hottest
98%
2nd hottest
<1%
3rd hottest
2%
4th or lower
1%
Note: If August 2026 is tied for first, second, or third hottest with another year, it will qualify for the bracket it ties with.
The primary resolution source for this market will be the figures found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "Aug" (https://data.giss.nasa.gov/gistemp/tabledata_v4/GLB.Ts+dSST.txt). If NASA's "Global Temperature Index" is rendered permanently unavailable, other information from NASA may be used.
If no information for August 2026 is provided by NASA by September 30, 2026, 11:59:59 PM ET, a consensus of credible sources will be used to resolve this market.
Market Opened: Jul 28, 2026, 1:44 PM ET
Resolver
0x69c47De9D...Note: If August 2026 is tied for first, second, or third hottest with another year, it will qualify for the bracket it ties with.
The primary resolution source for this market will be the figures found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "Aug" (https://data.giss.nasa.gov/gistemp/tabledata_v4/GLB.Ts+dSST.txt). If NASA's "Global Temperature Index" is rendered permanently unavailable, other information from NASA may be used.
If no information for August 2026 is provided by NASA by September 30, 2026, 11:59:59 PM ET, a consensus of credible sources will be used to resolve this market.
Resolver
0x69c47De9D...**August 2026 set a new global surface temperature record as the warmest August in the instrumental era, according to the Copernicus Climate Change Service (C3S) ERA5 reanalysis, the primary dataset used for such rankings.** The month reached approximately 1.65°C above pre-industrial levels, exceeding the prior August 2024 benchmark by a substantial margin amid a rapidly strengthening El Niño event that amplified ocean heat content. Daily extra-polar sea surface temperatures hit an all-time high of 21.1°C on August 22—surpassing the March 2024 peak—while land and ocean anomalies aligned to produce the highest monthly global mean on record at roughly 16.96°C. This outcome reflects the combined effects of long-term anthropogenic warming and the emerging El Niño, which boosted tropical Pacific temperatures and shifted atmospheric circulation patterns. Historical context shows August normally ranks among the warmest months seasonally, yet 2026 surpassed prior peaks by a clear margin across multiple indicators, including widespread Northern Hemisphere heatwaves. Trader consensus at 98.2% for first-hottest reflects these verified observations and the low likelihood of dataset revisions overturning the ranking. Realistic challenges include minor adjustments in final processing from agencies like NASA GISS or NOAA, or divergent rankings in satellite lower-troposphere records (e.g., UAH placing it second), though surface datasets show a decisive lead unlikely to flip.
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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