Recent forecast models from sources including the Finnish Meteorological Institute and international agencies point to a mild late-summer pattern over Helsinki on August 30, with highs likely near the 1991–2020 average of 18.4 °C. Southwesterly flow, increasing cloud cover, and a 40–60 % chance of light rain or showers are expected to limit daytime heating, while high humidity near 90 % further moderates peaks. Model consensus clusters between 17–19 °C, with minor run-to-run differences in timing of any afternoon clearing creating the narrow edge between 19 °C and 20 °C outcomes. Historical records show occasional 21–23 °C spikes under clearer, drier conditions, but current guidance shows no strong signal for such warming. Updated model runs and official briefings in the next 48 hours will refine these probabilities.
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 30?
Highest temperature in Helsinki on August 30?
19°C 37%
20°C 36%
21°C 12%
18°C 11%
NEW
NEW
Aug 30, 2026
14°C or below
<1%
15°C
<1%
16°C
3%
17°C
7%
18°C
11%
19°C
37%
20°C
36%
21°C
12%
22°C
2%
23°C
<1%
24°C or higher
<1%
19°C 37%
20°C 36%
21°C 12%
18°C 11%
NEW
NEW
Aug 30, 2026
14°C or below
$83 Vol.
<1%
15°C
$25 Vol.
<1%
16°C
$0 Vol.
3%
17°C
$122 Vol.
7%
18°C
$169 Vol.
11%
19°C
$74 Vol.
37%
20°C
$69 Vol.
36%
21°C
$26 Vol.
12%
22°C
$0 Vol.
2%
23°C
$32 Vol.
<1%
24°C or higher
$35 Vol.
<1%
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 30 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
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
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.Recent forecast models from sources including the Finnish Meteorological Institute and international agencies point to a mild late-summer pattern over Helsinki on August 30, with highs likely near the 1991–2020 average of 18.4 °C. Southwesterly flow, increasing cloud cover, and a 40–60 % chance of light rain or showers are expected to limit daytime heating, while high humidity near 90 % further moderates peaks. Model consensus clusters between 17–19 °C, with minor run-to-run differences in timing of any afternoon clearing creating the narrow edge between 19 °C and 20 °C outcomes. Historical records show occasional 21–23 °C spikes under clearer, drier conditions, but current guidance shows no strong signal for such warming. Updated model runs and official briefings in the next 48 hours will refine these probabilities.
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 30 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
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
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
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
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 28, 2026, 12:58 AM ET
Volume
$634End Date
Aug 30, 2026Market Opened
Aug 28, 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 30 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
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
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.Recent forecast models from sources including the Finnish Meteorological Institute and international agencies point to a mild late-summer pattern over Helsinki on August 30, with highs likely near the 1991–2020 average of 18.4 °C. Southwesterly flow, increasing cloud cover, and a 40–60 % chance of light rain or showers are expected to limit daytime heating, while high humidity near 90 % further moderates peaks. Model consensus clusters between 17–19 °C, with minor run-to-run differences in timing of any afternoon clearing creating the narrow edge between 19 °C and 20 °C outcomes. Historical records show occasional 21–23 °C spikes under clearer, drier conditions, but current guidance shows no strong signal for such warming. Updated model runs and official briefings in the next 48 hours will refine these probabilities.
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 30 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
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
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
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
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
$634End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=efhkResolver
0x69c47De9D...Recent forecast models from sources including the Finnish Meteorological Institute and international agencies point to a mild late-summer pattern over Helsinki on August 30, with highs likely near the 1991–2020 average of 18.4 °C. Southwesterly flow, increasing cloud cover, and a 40–60 % chance of light rain or showers are expected to limit daytime heating, while high humidity near 90 % further moderates peaks. Model consensus clusters between 17–19 °C, with minor run-to-run differences in timing of any afternoon clearing creating the narrow edge between 19 °C and 20 °C outcomes. Historical records show occasional 21–23 °C spikes under clearer, drier conditions, but current guidance shows no strong signal for such warming. Updated model runs and official briefings in the next 48 hours will refine these probabilities.
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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