Recent short-range forecast runs from agencies including the Finnish Meteorological Institute position 22–23 °C as the most likely daily maximum for Helsinki on August 9, reflecting a brief ridge of high pressure that favors clearer skies and modest daytime heating above the early-August climatological mean of ~20 °C. Model consensus shows light westerly flow limiting marine cooling while surface dew points remain moderate, keeping the risk of significant cloud cover or showers low through the peak heating window. With only 48 hours until resolution, traders have aligned probabilities accordingly, though any late westward shift in the Atlantic trough could cap readings nearer 21 °C.
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 32%
24°C 17%
21°C 8%
NEW
NEW
Aug 9, 2026
18°C or below
<1%
19°C
2%
20°C
3%
21°C
8%
22°C
41%
23°C
32%
24°C
17%
25°C
5%
26°C
<1%
27°C
<1%
28°C or higher
<1%
22°C 41%
23°C 32%
24°C 17%
21°C 8%
NEW
NEW
Aug 9, 2026
18°C or below
$131 Vol.
<1%
19°C
$10 Vol.
2%
20°C
$230 Vol.
3%
21°C
$308 Vol.
8%
22°C
$1,113 Vol.
41%
23°C
$597 Vol.
32%
24°C
$650 Vol.
17%
25°C
$410 Vol.
5%
26°C
$136 Vol.
<1%
27°C
$126 Vol.
<1%
28°C or higher
$296 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.Recent short-range forecast runs from agencies including the Finnish Meteorological Institute position 22–23 °C as the most likely daily maximum for Helsinki on August 9, reflecting a brief ridge of high pressure that favors clearer skies and modest daytime heating above the early-August climatological mean of ~20 °C. Model consensus shows light westerly flow limiting marine cooling while surface dew points remain moderate, keeping the risk of significant cloud cover or showers low through the peak heating window. With only 48 hours until resolution, traders have aligned probabilities accordingly, though any late westward shift in the Atlantic trough could cap readings nearer 21 °C.
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
$4,007End 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.Recent short-range forecast runs from agencies including the Finnish Meteorological Institute position 22–23 °C as the most likely daily maximum for Helsinki on August 9, reflecting a brief ridge of high pressure that favors clearer skies and modest daytime heating above the early-August climatological mean of ~20 °C. Model consensus shows light westerly flow limiting marine cooling while surface dew points remain moderate, keeping the risk of significant cloud cover or showers low through the peak heating window. With only 48 hours until resolution, traders have aligned probabilities accordingly, though any late westward shift in the Atlantic trough could cap readings nearer 21 °C.
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
$4,007End Date
Aug 9, 2026Market Opened
Aug 7, 2026, 12:04 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Recent short-range forecast runs from agencies including the Finnish Meteorological Institute position 22–23 °C as the most likely daily maximum for Helsinki on August 9, reflecting a brief ridge of high pressure that favors clearer skies and modest daytime heating above the early-August climatological mean of ~20 °C. Model consensus shows light westerly flow limiting marine cooling while surface dew points remain moderate, keeping the risk of significant cloud cover or showers low through the peak heating window. With only 48 hours until resolution, traders have aligned probabilities accordingly, though any late westward shift in the Atlantic trough could cap readings nearer 21 °C.
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