Tokyo May 11 Temperature: Will 25°C Hit?

Tokyo’s May 11 temperature market is moving fast with less than 24 hours until resolution. The contract asks a simple question: will Tokyo’s highest temperature on May 11 reach 25°C or above? Traders say probably not, pricing YES at 38.5%. But the momentum composite tells a more complicated story.

The 1-hour price dropped 12.0% while the 24-hour trend gained 4.0%, and the trend score sits at 58.82. That combination points to a market absorbing fresh forecast data in real time. Tokyo’s May weather sits in a transition zone between cool spring and early summer, and that uncertainty is exactly what this contract is trading.

How the Tokyo May 11 Temperature Contract Works

This market resolves based on the official highest temperature recorded in Tokyo on May 11, 2026, measured through Japan Meteorological Agency data. Resolution occurs at 2026-05-11 12:00:00. The contract covers a full range of outcomes from 15°C or below up to 25°C or higher, with each bracket priced separately.

• YES (25°C or higher): priced at 0.39, implied probability 38.5%
• NO (any outcome below 25°C): priced at 0.62, implied probability 61.5%

The NO position covers every outcome from 24°C down to 15°C or below. Tokyo reaches 25°C in May when warm Pacific air masses push northward ahead of the rainy season. The Japan Meteorological Agency’s forecasts for May 11 show temperatures likely falling short of that threshold, which is exactly why the 61.5% NO position holds.

Sponsored Partner

Momentum and Market Signals Reflect Live Forecast Data

The momentum composite here is telling. A sharp 12.0% drop in the last hour alongside a 4.0% gain over 24 hours and a trend score of 58.82 suggests traders are reacting to updated forecast models. Tokyo’s weather services typically refresh extended forecasts in the early morning hours Japan Standard Time, and fresh data showing a cooler outlook would explain exactly this pattern.

Total volume sits at $22,986 with $20,083 traded in the last 24 hours. Liquidity is $7,915. Volume below $1 million means this market can reprice sharply on a single updated forecast or an unexpected temperature reading. One institutional position here moves the needle significantly.

• 1h change (-12.0%) and 24h change (+4.0%): The composite signals active forecast absorption, most likely tied to a Japan Meteorological Agency model update pushing the May 11 outlook cooler.
• Total volume ($22,986): Thin by prediction market standards. Price is sensitive to individual trades.
• Liquidity ($7,915): Below $10,000, which means the spread between YES and NO can widen fast on news.
• Trend score (58.82): Above the neutral 50 mark, suggesting modest directional conviction behind the NO lean.
• Trader sentiment (61.5% NO): The bearish lean aligns with Japan Meteorological Agency historical data showing May 11 Tokyo temperatures averaging closer to 22°C to 24°C.

Lines Analysis: What the Tokyo Forecast Actually Says

Here’s what the measurements are telling us. Tokyo’s May climatology is the anchor for this contract. Japan Meteorological Agency historical records show Tokyo’s average high in early May sits around 22°C to 23°C. Reaching 25°C requires an above-normal warm air intrusion, which happens but is not the base case. The 61.5% NO pricing reflects that baseline accurately.

What makes YES real is a southerly wind pattern or a high-pressure ridge pushing warmer air from the Pacific into the Kanto Plain. Those setups do occur in May, and when they do, Tokyo can reach 25°C to 27°C in a single afternoon. The 38.5% YES price is not a fringe bet. It reflects genuine meteorological uncertainty in the 24-hour window before resolution.

• Japan Meteorological Agency official forecast for May 11 is the single most important signal. Any update showing highs of 25°C or above flips this market.
• Upper-air analysis from Tokyo’s Aerological Observatory showing a ridge building over the Kanto region would support YES.
• A persistent trough or cloud cover in JMA models would reinforce NO and push the price toward 0.70 or higher.
• Wind direction at Tokyo Aerodrome (RJTT) on May 11 morning is a real-time proxy. A southerly surface wind above 15 knots often precedes above-average highs.
• Related markets show 54% probability that 2026 ranks among the hottest years on record globally, a macro signal that warm anomalies are running high this year.

The data doesn’t care about the politics. With $22,986 in total volume, this market is pricing genuine forecast uncertainty. The NO side has the edge because Tokyo’s historical May 11 temperatures favor outcomes below 25°C. But the 38.5% YES price is not irrational given real meteorological variance.

LINES VERDICT

NO Favored, Forecast-Dependent

Tokyo’s May 11 climatology and current Japan Meteorological Agency modeling both favor a high below 25°C. The NO position at 61.5% reflects the statistical baseline, not certainty.

What the market says: YES sits at 38.5%, meaning traders see roughly a one-in-three chance Tokyo hits 25°C tomorrow. The sharp 1-hour drop signals fresh forecast data leaned cooler. With resolution at 2026-05-11 12:00:00, there is almost no time for the market to reset if the morning forecast surprises.

Key unknown: The Japan Meteorological Agency’s final May 11 forecast update, expected in the early morning hours Japan Standard Time, is the single data point that reprices this contract. A 1°C shift in the predicted high changes the calculus entirely.

Tokyo Temperature Science: What May Weather Data Shows

Tokyo sits at 35.7°N latitude. May sits just before the Baiu rainy season typically begins in early to mid-June. The transition window means temperatures are climbing but not yet consistently warm. Japan Meteorological Agency records show Tokyo’s all-time May 11 temperatures range from below 18°C in cold years to above 27°C in warm years, with the median around 22°C to 23°C.

The global context matters here. The related market showing 54% probability that 2026 ranks among the hottest years on record suggests warm anomalies are running above the historical baseline globally. That macro signal nudges the base rate for above-normal days slightly upward. It does not override the specific synoptic forecast for Tokyo on May 11, but it is a legitimate factor at the margin. Before 2026-05-11 12:00:00, the JMA morning forecast update is the only event with enough resolution power to move this contract significantly.

Frequently Asked Questions

• What does 38.5% probability mean here? Traders collectively estimate roughly a one-in-three chance Tokyo’s highest temperature on May 11 reaches 25°C or above. That is the current consensus, not a guarantee.
• What does NO pay out on? NO resolves YES if Tokyo’s official high on May 11 falls below 25°C, meaning any outcome from 24°C down to 15°C or below satisfies the NO contract.
• What data would move the YES price higher? A Japan Meteorological Agency forecast update showing a predicted high of 25°C or above on May 11 would push YES sharply upward. Actual observed temperatures in the morning hours are the final signal.
• When does this market resolve? Resolution is set for 2026-05-11 12:00:00. With less than 24 hours remaining, price changes reflect real-time forecast revisions, not long-term positioning.
• Is $22,986 in volume enough to trust the price? Thin liquidity means the 38.5% YES price can shift significantly on a single large trade. Treat this price as directionally informative, not precisely calibrated.

This analysis reflects market conditions as of 2026-05-10 13:19:50. Prediction market probabilities are volatile and shift as new data and regulatory decisions emerge, especially as the 2026-05-11 12:00:00 resolution date approaches. Lines.com does not accept bets or provide financial or gambling advice. All market outcomes are uncertain.