Latest ensemble guidance from European and global models positions Helsinki's August 9 daytime maximum near 21–23 °C under light southwesterly flow and broken cloud cover, with modest warm advection from the Baltic Sea offsetting typical August climatology of 19–20 °C. Small differences in predicted insolation, boundary-layer mixing, and any late-day frontal timing create the narrow spread between 22 °C and 23 °C outcomes, as even modest increases in low-level moisture or cloud optical depth can suppress the peak by 1 °C. Official observations from Helsinki-Vantaa Airport and updated model runs through the weekend remain the key inputs that will refine these probabilities ahead of resolution.
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 9?
Highest temperature in Helsinki on August 9?
22°C 41%
23°C 36%
21°C 10%
24°C 10%
NEW
NEW
Aug 9, 2026
18°C or below
2%
19°C
3%
20°C
5%
21°C
10%
22°C
41%
23°C
36%
24°C
10%
25°C
6%
26°C
2%
27°C
2%
28°C or higher
<1%
22°C 41%
23°C 36%
21°C 10%
24°C 10%
NEW
NEW
Aug 9, 2026
18°C or below
$5 Vol.
2%
19°C
$5 Vol.
3%
20°C
$29 Vol.
5%
21°C
$94 Vol.
10%
22°C
$25 Vol.
41%
23°C
$282 Vol.
36%
24°C
$16 Vol.
10%
25°C
$61 Vol.
6%
26°C
$5 Vol.
2%
27°C
$5 Vol.
2%
28°C or higher
$125 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.Latest ensemble guidance from European and global models positions Helsinki's August 9 daytime maximum near 21–23 °C under light southwesterly flow and broken cloud cover, with modest warm advection from the Baltic Sea offsetting typical August climatology of 19–20 °C. Small differences in predicted insolation, boundary-layer mixing, and any late-day frontal timing create the narrow spread between 22 °C and 23 °C outcomes, as even modest increases in low-level moisture or cloud optical depth can suppress the peak by 1 °C. Official observations from Helsinki-Vantaa Airport and updated model runs through the weekend remain the key inputs that will refine these probabilities ahead of resolution.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 7, 2026, 12:04 AM ET
Volume
$651End Date
Aug 9, 2026Market Opened
Aug 7, 2026, 12:04 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.Latest ensemble guidance from European and global models positions Helsinki's August 9 daytime maximum near 21–23 °C under light southwesterly flow and broken cloud cover, with modest warm advection from the Baltic Sea offsetting typical August climatology of 19–20 °C. Small differences in predicted insolation, boundary-layer mixing, and any late-day frontal timing create the narrow spread between 22 °C and 23 °C outcomes, as even modest increases in low-level moisture or cloud optical depth can suppress the peak by 1 °C. Official observations from Helsinki-Vantaa Airport and updated model runs through the weekend remain the key inputs that will refine these probabilities ahead of resolution.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 9 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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
$651End Date
Aug 9, 2026Market Opened
Aug 7, 2026, 12:04 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Latest ensemble guidance from European and global models positions Helsinki's August 9 daytime maximum near 21–23 °C under light southwesterly flow and broken cloud cover, with modest warm advection from the Baltic Sea offsetting typical August climatology of 19–20 °C. Small differences in predicted insolation, boundary-layer mixing, and any late-day frontal timing create the narrow spread between 22 °C and 23 °C outcomes, as even modest increases in low-level moisture or cloud optical depth can suppress the peak by 1 °C. Official observations from Helsinki-Vantaa Airport and updated model runs through the weekend remain the key inputs that will refine these probabilities ahead of resolution.
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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