Tokyo June 2 High Temp: 25C Leads at 51%

Tokyo’s daily temperature ceiling on June 2 is one of the tightest calls on Polymarket right now. The 25°C outcome sits at 51% implied probability, just two percentage points above the field. That near-coin-flip pricing reflects a genuine meteorological uncertainty: early June in Tokyo rides the edge between the cool residue of spring and the first humid surges that precede the rainy season. The market is pricing uncertainty, not science.

The market question asks which single temperature bucket claims Tokyo’s highest reading on June 2. The 25°C outcome prices at $0.51 YES and $0.49 NO. The contract resolves on June 2 at 12:00 UTC. Total volume stands at $27,090, with $19,731 of that trading in the last 24 hours.

How the Tokyo June 2 Temperature Contract Works

This contract resolves to YES on whichever temperature bucket matches Tokyo’s official highest temperature recorded on June 2. The full range of outcomes runs from 17°C or below up through 27°C or higher, with each degree from 18°C through 26°C as a discrete outcome. The resolution source is Polymarket’s market resolution process, which draws on official meteorological data for Tokyo.

• 25°C YES: $0.51 (51% implied probability)
• 26°C: priced as a separate competing outcome
• 27°C or higher: priced as a separate competing outcome
• 24°C and below: multiple separate outcome buckets

The 25°C outcome misses its YES resolution whenever Tokyo’s official high on June 2 lands on any other temperature bucket. A reading of 24°C, 26°C, or a sharp swing in either direction all pay out the NO side. Early June Tokyo highs cluster between 22°C and 28°C historically, meaning the realistic range of outcomes spans at least six discrete buckets. That spread is why NO still prices at 49% even with 25°C as the leading single outcome.

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Momentum and Market Signals

The composite momentum signal here is strongly directional. The 25°C outcome gained 17% in the last 24 hours, with a 1-hour change of flat and a trend score of 50.01. That 24-hour surge almost certainly reflects traders repricing toward 25°C as June 2 weather models for Tokyo tightened overnight. When short-range forecasts converge on a narrow temperature band, a single bucket tends to absorb volume fast.

Total volume of $27,090 is thin. The $19,731 traded in the last 24 hours is the majority of this market’s entire history. Liquidity sits at $54,756, which is healthier than volume suggests, but thin markets move sharply on new data. A single updated weather model run or a shift in the Japan Meteorological Agency forecast could reprice this contract significantly before resolution.

Key Factors

• The 25°C outcome gained 17% in 24 hours, signaling a sharp model-driven repricing toward that temperature band.
• Total volume of $27,090 is well below $1M, meaning a single large trade or weather update can move the price materially.
• The 1-hour change of 0% suggests the market has stabilized after yesterday’s surge, awaiting the next forecast update.
• Competing outcomes at 24°C and 26°C remain live, keeping NO at 49% even as 25°C leads.
• The contract resolves within hours of this writing, compressing the window for further repricing.

Lines Analysis: What the Tokyo Data Says

Here’s what the measurements are telling us. The Japan Meteorological Agency’s short-range forecast for Tokyo on June 2 anchors this market. When traders pushed 25°C from roughly $0.34 at open to $0.51 in a single session, that move tracked a narrowing in the forecast confidence interval. Early June Tokyo climatology places the mean daily high around 24°C to 26°C, with 25°C sitting near the statistical center of that distribution. The market’s current pricing reflects a model consensus, not certainty.

What makes the NO side real is straightforward: the temperature distribution across all other buckets combined still prices at 49%. A passing weather system, an unexpected cloud cover pattern, or a sea breeze event could push the official high to 24°C or 26°C. The Japan Meteorological Agency records the official Tokyo high at Otemachi, a downtown station prone to urban heat effects. Any deviation from the forecast mean lands on a different bucket and the 25°C contract pays out nothing.

Signals to Monitor

• The Japan Meteorological Agency’s final short-range forecast for Tokyo on June 2 morning is the single most important input before resolution.
• A shift in the forecast toward 26°C or above would push volume toward the higher buckets and reprice 25°C sharply lower.
• Cloud cover and precipitation probability for June 2 in Tokyo directly cap or floor the daytime high, making morning sky conditions a live signal.
• The Otemachi observation station reading at peak afternoon hours determines the official high, so urban heat anomalies matter on clear-sky days.
• Any competing outcome trading above $0.20 would indicate the market is fragmenting, weakening the 25°C case without a clear alternative leader.

Total volume of $27,090 is thin enough that this market reflects informed weather traders more than broad consensus. The data favors 25°C as the most likely single bucket, but the combined weight of all other outcomes still exceeds 49%. The data doesn’t care about the politics, and here there are none. This is pure meteorology: a narrow forecast, a short time horizon, and a tight probability that resolves in hours.

LINES VERDICT

SLIGHT EDGE TO YES ON TWENTY-FIVE DEGREES

The 24-hour surge to 51% reflects a real model signal, not noise. Short-range forecasts for Tokyo on June 2 have converged on the 25°C range, and the market has followed the data.

What the market says: At 51% implied probability, traders have given 25°C a marginal edge over the entire field combined. This is not a strong conviction market. Thin volume below $30,000 means the price can and will shift on any forecast update before the June 2 resolution.

Key unknown: The Japan Meteorological Agency’s final morning forecast for Tokyo on June 2 is the single data point that will reprice this contract. A one-degree shift in the predicted high in either direction moves significant probability mass to adjacent buckets.

Scientific Context

Tokyo’s early June climate sits in a transitional window. The mean daily high at the Otemachi station in early June historically runs between 23°C and 26°C, with variance driven by whether the baiu (rainy season) front has arrived. In years when the front delays past June 2, clear skies push readings toward the upper end of that range. In years with early front arrival, cloud cover and moisture suppress the peak. The 25°C bucket captures the center of that historical distribution, which is precisely why it holds the leading probability in a fragmented multi-outcome market.

Before June 2 resolution, any development that shifts the forecast toward the tails, whether a front arriving early or an unexpected heat buildup, would reprice the adjacent buckets and erode the 25°C edge. The market has priced the most likely meteorological scenario. What moves price from here is any signal that the likely scenario is changing.

What does 51% mean for this market?

At 51%, the market says 25°C is the single most likely temperature outcome for Tokyo on June 2, but the combined probability of every other bucket still nearly matches it. This is a marginal edge, not a strong call.

What pays out on the NO side?

Any official Tokyo high other than exactly 25°C on June 2 means the 25°C YES contract pays nothing. That includes 24°C, 26°C, 27°C or higher, and every bucket below 24°C.

What data or event would move this price most?

A Japan Meteorological Agency forecast update shifting the predicted June 2 high by one degree in either direction would immediately reprice the 25°C contract and its neighbors. Morning sky conditions in Tokyo are the live signal.

When does this contract resolve?

The market resolves on June 2, 2026 at 12:00 UTC. Given Tokyo is UTC+9, this corresponds to 21:00 local time on June 2, after the full day’s peak temperature is recorded.

How reliable is this market given its volume?

Total volume of $27,090 is well below $1M, which means thin liquidity. Individual trades can move the price sharply. The $54,756 in liquidity provides some cushion, but this market should be read as a narrow weather trader consensus, not a deep crowd signal.