Current forecast consensus from meteorological models points to a peak of 19–20°C in Helsinki on August 25, driven by northerly flows advecting cooler maritime air and persistent partial cloud cover limiting insolation. Recent model runs show modest warming potential if skies clear midday, but high pressure and light winds favor stable conditions near seasonal norms of roughly 19°C. Trader sentiment clusters tightly on these outcomes because ensemble spread remains narrow, with lower probabilities assigned to 18°C or 21°C+ reflecting uncertainty in exact cloud timing and boundary-layer mixing over the next 48 hours.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Helsinki on August 25?
Highest temperature in Helsinki on August 25?
19°C 36%
20°C 34%
18°C 22%
21°C 16%
NEW
NEW
Aug 25, 2026
13°C or below
1%
14°C
1%
15°C
1%
16°C
4%
17°C
3%
18°C
17%
19°C
36%
20°C
34%
21°C
16%
22°C
10%
23°C or higher
2%
19°C 36%
20°C 34%
18°C 22%
21°C 16%
NEW
NEW
Aug 25, 2026
13°C or below
$55 Vol.
1%
14°C
$50 Vol.
1%
15°C
$50 Vol.
1%
16°C
$10 Vol.
4%
17°C
$105 Vol.
3%
18°C
$344 Vol.
17%
19°C
$79 Vol.
36%
20°C
$62 Vol.
34%
21°C
$135 Vol.
16%
22°C
$10 Vol.
10%
23°C or higher
$10 Vol.
2%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Current forecast consensus from meteorological models points to a peak of 19–20°C in Helsinki on August 25, driven by northerly flows advecting cooler maritime air and persistent partial cloud cover limiting insolation. Recent model runs show modest warming potential if skies clear midday, but high pressure and light winds favor stable conditions near seasonal norms of roughly 19°C. Trader sentiment clusters tightly on these outcomes because ensemble spread remains narrow, with lower probabilities assigned to 18°C or 21°C+ reflecting uncertainty in exact cloud timing and boundary-layer mixing over the next 48 hours.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 23, 2026, 12:58 AM ET
Volume
$909End Date
Aug 25, 2026Market Opened
Aug 23, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Current forecast consensus from meteorological models points to a peak of 19–20°C in Helsinki on August 25, driven by northerly flows advecting cooler maritime air and persistent partial cloud cover limiting insolation. Recent model runs show modest warming potential if skies clear midday, but high pressure and light winds favor stable conditions near seasonal norms of roughly 19°C. Trader sentiment clusters tightly on these outcomes because ensemble spread remains narrow, with lower probabilities assigned to 18°C or 21°C+ reflecting uncertainty in exact cloud timing and boundary-layer mixing over the next 48 hours.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Helsinki Vantaa Airport Station in degrees Celsius on 25 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=efhk
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$909End Date
Aug 25, 2026Market Opened
Aug 23, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Current forecast consensus from meteorological models points to a peak of 19–20°C in Helsinki on August 25, driven by northerly flows advecting cooler maritime air and persistent partial cloud cover limiting insolation. Recent model runs show modest warming potential if skies clear midday, but high pressure and light winds favor stable conditions near seasonal norms of roughly 19°C. Trader sentiment clusters tightly on these outcomes because ensemble spread remains narrow, with lower probabilities assigned to 18°C or 21°C+ reflecting uncertainty in exact cloud timing and boundary-layer mixing over the next 48 hours.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions