Shanghai May 29 High Temp: Will It Hit 27°C?

The market closed this question before the thermometers did. Shanghai’s highest temperature on May 29 is priced at 97.5% probability for a 27°C reading. That kind of conviction doesn’t emerge overnight. A 58.5% price surge in 24 hours tells the story: actual temperature data rolled in, and traders responded immediately.

The market question asks whether Shanghai’s daily high on May 29 reaches exactly 27°C. The 27°C outcome trades at $0.98 YES and $0.03 NO. The contract resolves at 12:00 UTC+8 on May 29, 2026. Total volume has reached $265,005, with $244,373 of that arriving in the last 24 hours alone.

How the Shanghai Temperature Contract Works

This contract resolves YES if official meteorological data confirms Shanghai’s highest temperature on May 29 hits exactly 27°C. The alternative outcomes span a wide range: 23°C or below, 24°C, 25°C, 26°C, 28°C, 29°C, 30°C, 31°C, 32°C, and 33°C or higher. Each outcome is a separate contract. Only one pays out.

• YES (27°C): $0.98 per share, implying 97.5% probability that today’s Shanghai high lands exactly at 27°C.
• NO (all other outcomes): $0.03 per share, implying a 2.5% probability that the high lands anywhere else on the listed range.

A NO payout requires Shanghai’s official daily maximum to land on any outcome other than 27°C. That means either 26°C or below, or 28°C or above. Given that 27°C markets are trading at 97.5% and competing brackets are trading near zero, the market has effectively ruled out all other outcomes. The only realistic NO scenario is a measurement that edges to 26°C or 28°C, outcomes that are priced but barely.

Sponsored Partner

Momentum and Market Signals

The 1-hour price change is flat at 0.0%, but that flatness follows an extraordinary 24-hour move. The trend score sits at 64.60, and the combined momentum signal points to a single driver: real temperature data from Shanghai became available, and traders who had been positioned across multiple outcome brackets collapsed into the 27°C contract. The 58.5% surge is not speculative. It reflects observed meteorological information.

Total volume of $265,005 is a meaningful figure for a single-day weather contract. The $244,373 in 24-hour volume represents 92% of all activity arriving in one day. Liquidity stands at $86,741, which is solid for a contract this close to resolution. Price movement on new data will be sharp, but the order book depth suggests the market can absorb final adjustments without breaking.

• The 24-hour volume surge of $244,373 reflects a direct response to incoming temperature data, not speculative positioning.
• Liquidity at $86,741 is sufficient to prevent extreme slippage as the contract approaches its noon resolution.
• The 1-hour price change of 0.0% signals the market has reached equilibrium. No new information has arrived in the past hour.
• The trend score of 64.60 confirms directional momentum remains with the 27°C outcome despite the flat hourly reading.
• Trader sentiment is strongly bullish: 97.5% of positions are on YES, with only 2.5% on NO.

Lines Analysis: Shanghai’s May 29 Temperature

Shanghai’s late-May climatology supports a 27°C daily high as a plausible and common outcome. The city typically transitions into its humid subtropical early-summer pattern through late May, with highs frequently landing in the 25°C to 29°C range. A 27°C reading sits squarely in that zone. Here’s what the measurements are telling us: the market didn’t move to 97.5% on theory. It moved because the observed data matched the outcome.

The scenario that makes NO real is narrow. Shanghai’s official meteorological station would need to record a daily maximum that rounds to 26°C or 28°C rather than 27°C. At 97.5% probability, the market is pricing approximately a 1-in-40 chance of that happening. Temperature readings near threshold boundaries always carry some measurement rounding uncertainty, but that uncertainty is small at this confidence level.

• Shanghai’s China Meteorological Administration station data arriving before noon resolution is the single most critical input. Any revision or updated reading would immediately reprice the contract.
• A boundary reading between 26.5°C and 27.4°C resolves YES. A reading at or below 26.4°C, or at or above 27.5°C, shifts the outcome.
• Late-morning temperature spikes or drops in Shanghai are possible but unusual in late May. The 11:00 to 12:00 window before resolution carries some residual risk.
• Competing outcome markets for 26°C and 28°C trading near zero confirm the market sees no serious alternative to 27°C today.

The data doesn’t care about the politics, and this contract has no politics. It’s a pure measurement question. With $265,005 in total volume and 97.5% conviction, the market has already made its determination. The remaining 2.5% accounts for measurement edge cases and nothing more. The data supports the 27°C outcome. The market is not pricing uncertainty here. It is pricing a near-confirmed observation.

Effectively Resolved: Twenty-Seven Degrees

The 58.5% price surge in 24 hours reflects incoming observational data, not sentiment. The market has priced this as a confirmed measurement, not a forecast.

What the market says: At 97.5% implied probability, the market treats this as functionally settled. The $244,373 in 24-hour volume arrived with real temperature data. Volatility risk before the noon resolution is minimal but nonzero, especially in the final measurement window.

Key unknown: The single factor that could reprice this contract is a final official reading from Shanghai’s China Meteorological Administration that lands outside the 26.5°C to 27.4°C rounding range. That is the only remaining uncertainty this market is holding open.