Home / Prediction Markets / Science / Seoul Low Temp July 8: Can 23°C Hold at 44%? Seoul Low Temp July 8: Can 23°C Hold at 44%? ☆ Watch Paper Trade View on Polymarket → Share SR Sofia Renard Climate & Science Analyst Embed NEW Embed this market Full Compact Copy Published July 6, 2026 6 min read Lines Verdict NO at 60% implied probability LEAN YES, LOW CONVICTION: 23°C leads the field climatologically, but multi-outcome structure and thin volume mean one forecast update reprices everything. Market probability: 43.5%. 40% Market Probability 1h +0.0% 24h +0.0% Trend Weak (37/100) Volume $2.2K $2.2K in 24h Liquidity $17.9K Moderate depth Time Left 2 days Resolves Jul 8 2K Vol. Jul 8, 2026 1H 6H 1D 1W 1M ALL Select lines to display 23°C $124 Vol. 40% Buy Yes 40¢ Buy No 60¢ 24°C $160 Vol. 35% Buy Yes 34.5¢ Buy No 65.5¢ 22°C $360 Vol. 10% Buy Yes 9.5¢ Buy No 90.5¢ 25°C $70 Vol. 5% Buy Yes 4.8¢ Buy No 95.2¢ 21°C $73 Vol. 2% Buy Yes 1.5¢ Buy No 98.5¢ 26°C $137 Vol. 1% Buy Yes 0.9¢ Buy No 99.1¢ Seoul’s overnight low on July 8 is a deceptively tight call. The market has settled on 23°C as the most likely outcome, but 43.5% implied probability on a multi-outcome market deserves scrutiny. That number doesn’t mean traders are confident. It means 23°C beats every alternative individually, while collectively the field of other outcomes holds the majority weight. The market question asks: what will the lowest temperature in Seoul be on July 8? The 23°C outcome trades at 0.44 YES and 0.57 NO, with a resolution deadline of July 8, 2026 at 12:00 UTC. Total volume sits at $2,219, all of it placed in the last 24 hours. This is a brand-new market with thin liquidity. How the Seoul July 8 Low Temperature Contract Works YES pays out if Seoul’s official lowest temperature on July 8 registers exactly 23°C. NO pays out if the recorded low lands anywhere else, including 22°C, 24°C, 21°C, 25°C, or any other listed outcome. Resolution follows the official measurement from Seoul’s meteorological authority. With eleven discrete outcomes on the board, any single outcome faces long odds by structure alone. 23°C YES: 0.44 (43.5% implied probability)23°C NO: 0.57 (56.5% implied probability) The NO side reflects the structural reality of multi-outcome markets. A 23°C NO buyer isn’t betting Seoul stays cool or heats up dramatically. NO buyers are simply betting that the low lands on any of the other ten available outcomes. A reading of 22°C or 24°C, just one degree off in either direction, resolves NO. That’s a meaningful edge for the opposing side. Sponsored Partner Momentum and Market Signals Momentum is effectively flat. The one-hour price change shows no movement, and the trend score of 35.98 sits in neutral-to-bearish territory for the 23°C outcome. The 24-hour price change is unavailable, which is consistent with a market that launched within the last day. Price moved from 0.40 at open to 0.44 currently, a modest four-cent climb that likely reflects early positioning rather than a data-driven shift. Total volume is $2,219, with all $2,219 arriving in the last 24 hours. Liquidity stands at $13,449, which is healthy relative to volume, but the volume itself is extremely thin. At this level, a single moderately sized bet can move the price sharply. Treat the current 43.5% probability as directional signal, not precision. The 1-hour price change sits at zero, confirming no late-breaking weather signal has reached the market yet.Price climbed from 0.40 to 0.44 since open, suggesting early money leaned toward 23°C before stabilizing.Thin volume below $1M means any new weather forecast update published before July 8 could reprice this contract significantly.Liquidity of $13,449 provides enough depth for small trades to execute cleanly, but large bets will move the market. Lines Analysis: Seoul Temperature Outlook Seoul in early July typically runs overnight lows in the low-to-mid 20s Celsius. The Korean Meteorological Administration tracks surface temperature at official stations, and July 8 falls squarely in the early monsoon season. During this period, cloud cover and residual daytime humidity tend to keep overnight temperatures elevated. A floor in the 22°C to 25°C range is climatologically consistent with Seoul’s July baseline. The market clustering around 23°C reflects that seasonal pattern. The data doesn’t care about the politics, and here the data points to a narrow band of outcomes. What makes NO real is the width of the alternative field. The reading landing at 24°C instead of 23°C is not a dramatic weather event. It’s a one-degree shift that any passing cloud system, rain shower, or wind pattern change can produce. The same logic applies downward to 22°C. Seoul’s monsoon onset creates day-to-day variability that makes exact-degree prediction genuinely uncertain. The Korean Meteorological Administration’s latest forecasts and any issued special weather advisories for the July 7-8 window are the primary inputs that should move this price. Korean Meteorological Administration forecast updates for July 7 through 8 will directly set trader expectations.A monsoon front arriving early would push overnight lows up toward 24°C or 25°C, repricing alternative outcomes higher.Clear skies and dry air mass dominance would allow radiative cooling and could push the low toward 22°C or lower.Any typhoon or tropical disturbance approaching the Korean Peninsula before July 8 would be a major wildcard.Operational weather model consensus (GFS, ECMWF) for Seoul overnight July 7-8 is the single clearest signal to watch. Here’s what the measurements are telling us: 23°C is the modal forecast for Seoul’s July 8 low, and the market is pricing that correctly as the most likely single outcome. But $2,219 in total volume is a whisper, not a consensus. The market is pricing uncertainty, not science. One updated forecast model run could flip the modal outcome to 22°C or 24°C and reprice this contract before Wednesday morning. LINES VERDICT LEAN YES, LOW CONVICTION The 23°C outcome leads the field because Seoul’s July climatology supports a low in exactly that range, but the multi-outcome structure and razor-thin volume mean this is a modal bet, not a confident call. What the market says: A 43.5% implied probability reflects 23°C as the most likely single outcome in a field of eleven. That’s a meaningful edge over any individual alternative, but the combined weight of all other outcomes still favors NO. With the resolution date arriving in under 48 hours, expect sharp price movement on any updated Korean Meteorological Administration forecast. Key unknown: The Korean Meteorological Administration’s July 7 evening forecast update is the single most important data point. If operational models shift the predicted overnight low by even one degree, the leading outcome in this market changes. Frequently Asked QuestionsWhat does 43.5% probability mean for the 23°C outcome?It means the market rates 23°C as the most likely single outcome among eleven options. It does not mean traders expect it to hit with high confidence. All other outcomes combined still carry more weight.How does the NO contract pay out here?NO pays out if Seoul's official lowest temperature on July 8 is anything other than exactly 23°C. That includes 22°C, 24°C, 25°C, or any other listed outcome. One degree of difference resolves NO.What data would move this market most before resolution?An updated Korean Meteorological Administration forecast for the July 7-8 overnight period is the primary driver. If operational weather models shift the predicted low by one degree, the leading outcome changes.When does this market resolve?The market resolves on July 8, 2026 at 12:00 UTC, based on the official lowest temperature recorded in Seoul on that date.Is the volume reliable enough to trust the current price?Total volume is $2,219, which is extremely thin. Prices can move sharply on a single new trade or forecast update. The current 43.5% should be treated as directional signal, not a precise probability.How is the Smart Money Index calculated?We aggregate the live positions of the top 50 Polymarket whales (ranked by 30-day tracked volume) into one composite reading per market. It refreshes every hour. The percentage shows how many of those whales hold YES versus NO; the net dollar position shows the cohort's directional exposure in dollars.What is a convergence signal?A convergence event fires when three or more tracked wallets buy the same outcome on the same market within a four-hour window. We surface these in the activity feed and the VIP digest.Is Lines a market operator?No. Lines is an editorial and data product. We do not operate prediction markets, custody funds, or accept trades. All trade flows deep-link to Polymarket via our affiliate code. Probabilities shown are market-implied and not predictions or recommendations. What Could Shift These Probabilities? 23°C Holds as Modal Forecast Korean Meteorological Administration and global weather models align on an overnight low in the 23°C range for Seoul on July 8. Humid, cloudy conditions from the early monsoon keep temperatures elevated but capped. Traders pile into 23°C as the consensus forecast sharpens, driving the YES price above 0.50 before Wednesday morning resolution. One-Degree Shift Breaks the Trade An updated weather model run shifts the predicted Seoul overnight low to 24°C, moving trader attention and volume to the adjacent outcome. The 23°C YES price drops as new money enters the 24°C contract instead. In a thin market with total volume under $3,000, even a small reallocation reprices 23°C below 0.35. Dry Air Pushes Low Toward 22°C A dry continental air mass replaces the monsoon humidity over Seoul on July 7, enabling stronger radiative cooling overnight. The Korean Meteorological Administration issues a revised forecast with the low dipping to 22°C. The 22°C outcome gains market share at the expense of 23°C, and the multi-outcome field redistributes sharply on thin liquidity. Tropical System Changes the Equation A developing tropical disturbance in the East China Sea accelerates toward the Korean Peninsula and arrives ahead of schedule on July 7. Warm, wet air ahead of the system pushes Seoul's overnight low to 26°C or higher, an outlier outcome currently trading at very low probability. Thin volume means even a small bet on the high-end outcomes moves prices dramatically. Key macro factor: Seoul's early July monsoon onset creates day-to-day temperature variability that makes exact-degree overnight low forecasting genuinely uncertain, with cloud cover and moisture flux from the Yellow Sea as the primary moderating factors. Market Timeline 4:30 AM Market Created 4:30 AM Market Opened Wednesday, Jul 8 Market Resolution Place paper trade No real money × Lowest temperature in Seoul on July 8? Outcome 23°C · 40% 24°C · 35% 22°C · 10% 25°C · 5% 21°C · 2% 26°C · 1% 27°C · 1% 20°C · 0% 28°C · 0% 29°C or higher · 0% 19°C or below · 0% YES $0.40 NO $0.60 Stake (USD) $100 $500 $1,000 $5,000 Pick a market to see how many shares you would hold. 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