Recent model consensus from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts points to a Helsinki maximum of 21–23°C on August 15 under partly cloudy skies and light northwesterly flow, aligning with the market’s tight clustering around those outcomes. Baltic Sea surface temperatures near 18°C provide modest moderation while variable cloud cover and the timing of a weak trough introduce enough uncertainty to keep 22°C and 23°C nearly tied. Mid-August climatology shows average highs of 19–21°C, with daytime heating limited by high-latitude solar angles and frequent marine influence. Updated short-range runs and FMI briefings expected in the next 24–48 hours will likely sharpen the distribution 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 15?
Highest temperature in Helsinki on August 15?
22°C 28%
23°C 27%
21°C 12%
24°C 10%
NEW
NEW
Aug 15, 2026
17°C or below
1%
18°C
2%
19°C
5%
20°C
6%
21°C
12%
22°C
28%
23°C
27%
24°C
10%
25°C
3%
26°C
1%
27°C or higher
1%
22°C 28%
23°C 27%
21°C 12%
24°C 10%
NEW
NEW
Aug 15, 2026
17°C or below
$1,638 Vol.
1%
18°C
$171 Vol.
2%
19°C
$63 Vol.
5%
20°C
$0 Vol.
6%
21°C
$0 Vol.
12%
22°C
$0 Vol.
28%
23°C
$0 Vol.
27%
24°C
$0 Vol.
10%
25°C
$0 Vol.
3%
26°C
$22 Vol.
1%
27°C or higher
$22 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 15 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.Recent model consensus from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts points to a Helsinki maximum of 21–23°C on August 15 under partly cloudy skies and light northwesterly flow, aligning with the market’s tight clustering around those outcomes. Baltic Sea surface temperatures near 18°C provide modest moderation while variable cloud cover and the timing of a weak trough introduce enough uncertainty to keep 22°C and 23°C nearly tied. Mid-August climatology shows average highs of 19–21°C, with daytime heating limited by high-latitude solar angles and frequent marine influence. Updated short-range runs and FMI briefings expected in the next 24–48 hours will likely sharpen the distribution 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 15 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 15 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 13, 2026, 12:57 AM ET
Volume
$1,916End Date
Aug 15, 2026Market Opened
Aug 13, 2026, 12:57 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 15 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.Recent model consensus from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts points to a Helsinki maximum of 21–23°C on August 15 under partly cloudy skies and light northwesterly flow, aligning with the market’s tight clustering around those outcomes. Baltic Sea surface temperatures near 18°C provide modest moderation while variable cloud cover and the timing of a weak trough introduce enough uncertainty to keep 22°C and 23°C nearly tied. Mid-August climatology shows average highs of 19–21°C, with daytime heating limited by high-latitude solar angles and frequent marine influence. Updated short-range runs and FMI briefings expected in the next 24–48 hours will likely sharpen the distribution 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 15 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 15 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
$1,916End Date
Aug 15, 2026Market Opened
Aug 13, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Recent model consensus from the Finnish Meteorological Institute and European Centre for Medium-Range Weather Forecasts points to a Helsinki maximum of 21–23°C on August 15 under partly cloudy skies and light northwesterly flow, aligning with the market’s tight clustering around those outcomes. Baltic Sea surface temperatures near 18°C provide modest moderation while variable cloud cover and the timing of a weak trough introduce enough uncertainty to keep 22°C and 23°C nearly tied. Mid-August climatology shows average highs of 19–21°C, with daytime heating limited by high-latitude solar angles and frequent marine influence. Updated short-range runs and FMI briefings expected in the next 24–48 hours will likely sharpen the distribution 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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