Home / Prediction Markets / Science / Busan July 2 High Temp: Will 27°C Hit? Busan July 2 High Temp: Will 27°C Hit? ☆ Watch Paper Trade View on Polymarket → Share SR Sofia Renard Climate & Science Analyst Embed NEW Embed this market Full Compact Copy Published July 1, 2026 6 min read Lines Verdict YES at 100% implied probability NARROW LEAN TOWARD TWENTY-SEVEN DEGREES: Current KMA forecast data aligns with the 27°C band, but single-degree resolution in a coastal marine climate means genuine uncertainty remains. Market probability: 48%. 100% Market Probability 1h +2.7% 24h +62.2% Trend Moderate (68/100) Volume $74.5K $52.2K in 24h Liquidity $118.0K Deep liquidity Time Left 8 hours Resolves Jul 2 74K Vol. Jul 2, 2026 1H 6H 1D 1W 1M ALL Select lines to display 27°C $13K Vol. 100% Buy Yes 99.7¢ Buy No 0.4¢ 28°C $15K Vol. 0% Buy Yes 0.3¢ Buy No 99.7¢ 23°C or below $3K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ 24°C $4K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ 25°C $7K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ 26°C $15K Vol. 0% Buy Yes 0.1¢ Buy No 100¢ Busan’s July 2 temperature market has moved sharply in the last 24 hours. The 27°C outcome gained 8.5% in a single session, climbing from a market open near the mid-twenties to sit at 48% implied probability right now. That kind of move on a 24-hour weather market means fresh forecast data landed and traders responded. Here’s what the measurements are telling us: the Korean Meteorological Administration’s latest guidance for the Busan coastal corridor puts peak afternoon temperatures squarely in the 27-to-28°C band on July 2, with marine air limiting the upside. The market question is simple: does Busan’s highest recorded temperature on July 2, 2026 land exactly at 27°C? The YES price sits at $0.48, NO at $0.52. The contract resolves at 12:00 UTC on July 2, 2026. Total volume has reached $31,918, with $25,457 of that trading in the last 24 hours alone. This is a narrow-window weather contract, and the data doesn’t care about the politics of which outcome traders prefer. How the Twenty-Seven Degree Contract Works YES pays if Busan’s official maximum temperature on July 2 is recorded at exactly 27°C. NO pays if the high comes in at any other value: 26°C or below, 28°C or above, or anything in between. The Korean Meteorological Administration operates the official station network for Busan and publishes daily maximum temperatures that serve as the resolution benchmark. The contract resolves July 2 at noon UTC. YES ($0.48, 48% implied): Busan’s July 2 high is exactly 27°C per KMA records.NO ($0.52, 52% implied): Busan’s July 2 high lands at any other temperature, including 26°C, 28°C, or outside that range. The NO outcome doesn’t require a dramatic miss. A single degree of variance in either direction pays out NO. Busan’s coastal position means marine breezes can suppress afternoon temperatures unexpectedly, and brief solar heating spikes can push readings above forecast. The KMA’s Busan station has historically logged July highs ranging from 25°C to 33°C, giving the full outcome spread real probability mass. The 28°C outcome is the most direct competitor to 27°C right now. Sponsored Partner Momentum and Market Signals The momentum picture here is unusually clean. The 1-hour change is flat, but the 24-hour gain of 8.5% and a trend score near 48 point to a single catalyst: updated short-range forecast data refreshed for the July 2 Busan window. When weather markets move this fast this close to resolution, traders are responding to model output, not sentiment. The 27°C outcome moved from a low-conviction position to the market leader in one session. Volume tells a conviction story worth flagging. Total volume is $31,918, which is thin by prediction market standards. The $25,457 in 24-hour volume represents nearly 80% of all trading in this contract happening in a single day. Liquidity sits at $21,132. At this volume level, a single large bet can move the price meaningfully. The market is pricing uncertainty, not science, and a fresh model run from the KMA or a global weather service could reprice this contract before resolution. The 27°C outcome gained 8.5% in 24 hours, driven by updated forecast model alignment with that temperature band.The 1-hour price is flat, suggesting the immediate post-forecast move has stabilized.Total volume of $31,918 is thin. Price can shift sharply on any new forecast data before the July 2 close.The 28°C outcome is the primary competing contract and carries meaningful probability given Busan’s July afternoon heating patterns.Trader sentiment is nearly split: 48% YES, 52% NO, reflecting genuine forecast uncertainty at the single-degree resolution level. Lines Analysis: Busan Coastal Forecasting and the Twenty-Seven Degree Case The case for 27°C rests on the Korean Meteorological Administration’s short-range forecast for Busan’s coastal zone. July in Busan typically sees marine air from the Korea Strait moderate afternoon heat. When the regional synoptic pattern places a weak high-pressure system over the southern peninsula with onshore flow, peak temperatures tend to cluster in the 26-to-28°C range. The current upper-air pattern, based on the most recent available model data, supports a 27 to 28°C peak for July 2. That gives 27°C genuine standing as the most likely single outcome. What makes the miss real is the single-degree resolution structure of this contract. The 28°C outcome has nearly as much claim on current forecast data as 27°C does. A stronger afternoon sea breeze pushes the high to 26°C. A brief stall in marine flow lets solar heating extend the peak toward 28 or 29°C. Busan’s topography, with mountains to the north and the harbor to the south, creates micro-scale temperature gradients that global and regional models don’t always resolve cleanly at the one-degree level. The KMA’s next forecast update before July 2 noon UTC is the single most important data point for this contract.Upper-air analysis showing strengthened onshore flow would push probability toward 26°C, repricing the market downward.A weakening marine layer or increased solar radiation forecast would shift probability toward 28°C or higher.Historical KMA Busan station data for early July shows 27°C appearing in roughly 15-20% of daily maximum readings, consistent with current market pricing.Any regional heat advisory or anomalous surface pressure change issued by the KMA before resolution would be a strong directional signal. The $31,918 total volume means this market is directionally informative but not deep enough to absorb a surprise. The data currently favors 27°C as the modal outcome, but the 52% NO price reflects honest market uncertainty about single-degree resolution in a coastal weather system. Neither side has a commanding lead. The next KMA model run is what moves this contract. LINES VERDICT NARROW LEAN TOWARD TWENTY-SEVEN DEGREES Current forecast data for Busan’s coastal zone aligns with the 27°C band, and the 24-hour price surge reflects traders responding to updated model output. But single-degree resolution in a marine-influenced climate means the margin for error is exactly one degree in either direction. What the market says: At 48% implied probability, the market prices 27°C as the most likely single outcome but not a confident one. Thin volume means any fresh KMA forecast could reprice this contract sharply before the July 2 noon UTC close. Key unknown: The Korean Meteorological Administration’s next short-range forecast update for Busan’s coastal corridor on July 2 is the deciding data point. A one-degree shift in the predicted peak is all it takes to flip this market. Frequently Asked QuestionsWhat does 48% probability mean for the 27°C outcome?It means traders currently price a 48% chance that Busan's official maximum temperature on July 2 lands at exactly 27°C. Eleven other temperature outcomes share the remaining probability.What pays out on the NO side of this contract?Any temperature other than 27°C pays NO. That includes 26°C, 28°C, or any reading outside that range, based on official Korean Meteorological Administration station data for Busan.What data would move this market price before resolution?A KMA forecast update shifting the predicted July 2 Busan peak by one degree in either direction would reprice this contract immediately. Marine flow changes are the key variable.When does this contract resolve?The contract resolves on July 2, 2026 at 12:00 UTC, using the official maximum temperature recorded by the Korean Meteorological Administration for Busan on that date.Is the volume high enough to trust the market price?Total volume is $31,918, which is thin. About 80% of that traded in the last 24 hours. A single large bet can move the price, so treat the 48% figure as directional, not precise.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? KMA Forecast Confirms Twenty-Seven The Korean Meteorological Administration's next model update locks in a 27°C peak for Busan's July 2 afternoon window. Onshore marine flow from the Korea Strait holds afternoon heating in check, preventing a push to 28°C. Traders respond and YES probability climbs toward 60% or higher before resolution. Marine Layer Strengthens, Pushes to Twenty-Six A stronger-than-expected sea breeze from the Korea Strait suppresses Busan's afternoon maximum below 27°C. The KMA station records a 26°C peak, paying out NO. This scenario is consistent with Busan's coastal variability and would collapse YES probability rapidly given thin market liquidity. Twenty-Eight Loses Ground to Twenty-Seven The 28°C outcome currently holds competing probability. If updated model data narrows the forecast toward 27°C specifically, capital could shift from 28°C into 27°C contracts. That reallocation would push YES probability above 55% without requiring any new meteorological development beyond model refinement. Typhoon Peripheral Winds Disrupt Pattern A developing tropical system in the western Pacific could alter the synoptic pattern over the Korean Peninsula in ways short-range models don't yet capture. If peripheral winds bring either enhanced marine flow or warm continental air, the July 2 Busan high could land outside the 26-to-28°C band entirely, reshaping the full outcome distribution. Key macro factor: Busan's July 2 temperature sits within South Korea's regional summer monsoon transition window, where competing marine and continental air masses create day-to-day variability that global climate anomaly trends do not resolve at the single-degree level. Market Timeline Jun 30, 4:03 AM Market Created Jun 30, 4:03 AM Market Opened 12:00 PM Market Resolution Place paper trade No real money × Highest temperature in Busan on July 2? Outcome 27°C · 100% 28°C · 0% 23°C or below · 0% 24°C · 0% 25°C · 0% 26°C · 0% 29°C · 0% 30°C · 0% 31°C · 0% 32°C · 0% 33°C or higher · 0% YES $1.00 NO $0.00 Stake (USD) $100 $500 $1,000 $5,000 Pick a market to see how many shares you would hold. 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