Singapore June 11 Peak Temp: Will 30°C Hold?

Singapore’s weather markets rarely move this fast. The 30°C outcome contract jumped more than 35 percent in a single hour on June 10, reaching a 69 percent implied probability. That kind of momentum on a same-day temperature contract means traders are reacting to something concrete: current conditions, synoptic forecasts, or both.

The market question asks whether Singapore’s highest temperature on June 11 will reach exactly 30°C. The yes price sits at 0.69, the no price at 0.31, and the contract resolves at 12:00 SGT on June 11. Total volume stands at $42,175, with $33,304 traded in the last 24 hours alone.

How the 30°C Contract Works

This is a single-outcome contract in a multi-bucket temperature market. Resolution depends on the official highest temperature recorded in Singapore on June 11. The relevant observation network is the Meteorological Service Singapore (MSS), which publishes daily maximum temperatures from Changi Climate Station, the primary reference point for Singapore temperature records.

• Yes (30°C): pays out if Singapore’s official daily maximum on June 11 is exactly 30°C. Current price: $0.69, implied probability 69%.
• No (all other outcomes): covers every other bucket, including 29°C, 31°C, 32°C, 33°C, 34°C or higher, and readings at or below 24°C. Current price: $0.31.

The no side wins whenever the MSS daily maximum lands in any bucket other than 30°C. Singapore’s June daily highs typically cluster between 30°C and 33°C, so the real competition for this contract comes from the 31°C and 32°C buckets pulling probability away from the 30°C target. A cooler, cloudier day with convective activity could push the reading toward 29°C, also paying no.

Momentum and Market Signals

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The momentum composite here is unusually strong. The 1-hour change of plus 35.5 percent, the 24-hour change of plus 32.5 percent, and a trend score of 86.35 are all pointing the same direction. That kind of acceleration on a short-duration weather contract almost always traces back to a forecast update or an early-morning temperature reading that narrows the range of likely outcomes.

Total volume of $42,175 is modest by prediction market standards, and $33,304 of that traded in the last 24 hours, meaning this market came alive very recently. Liquidity stands at $84,677, which is healthy relative to volume. That said, total volume is well below $1 million, so the price can reprice sharply on a single large trade or a new forecast data point before resolution at noon SGT.

• The 1-hour and 24-hour momentum both print strongly bullish, consistent with a trader cohort responding to a short-range forecast placing the June 11 high near 30°C.
• Trader sentiment is strongly bullish: 69% yes versus 31% no, matching the price exactly.
• Liquidity exceeds volume, which suggests the order book is reasonably well-supported but not deeply tested.
• The contract resolves in less than 24 hours from writing, compressing all uncertainty into the next synoptic cycle.
• The 24-hour volume of $33,304 represents nearly 79 percent of total lifetime volume, signaling a late-stage rush into the 30°C outcome.

Lines Analysis: Singapore Temperature on June 11

Singapore sits just north of the equator, and June is squarely within the inter-monsoon and early southwest monsoon transition period. The Meteorological Service Singapore’s historical data for June shows daily maximums typically ranging from 29°C to 33°C, with the median closer to 31°C to 32°C on clear days and 29°C to 30°C on days with significant afternoon convection or morning cloud cover. A 30°C daily maximum is therefore a real outcome, but it sits on the cooler end of a typical June distribution. For the 30°C bucket to resolve yes, Singapore needs enough cloud, rain, or morning convection to suppress the afternoon peak without going below 30°C entirely.

The 31°C and 32°C buckets represent the strongest competition. On a day with moderate sunshine and typical June humidity, Changi Station frequently records maximums in that range. If the MSS daily maximum lands at 31°C instead of 30°C, no pays out in full. The market’s 69 percent confidence in 30°C means traders currently see the atmospheric setup as suppressed enough to hold the peak near 30°C but not below it. That is a narrow target in a multi-bucket structure.

• MSS Changi Station data before market close will be the definitive signal. Any early morning reading above 30°C shifts probability toward the 31°C or 32°C buckets.
• Convective activity over Singapore on the morning of June 11 would suppress the daily maximum toward 29°C or 30°C, supporting the yes contract.
• Clear skies and low cloud cover in the morning hours would favor a 31°C or 32°C outcome, pressuring the yes contract lower.
• MSS short-range forecasts, updated overnight, are the single most important input before resolution.
• Any revision to the official daily maximum after initial publication could reprice this contract sharply, given the thin total volume.

Total volume of $42,175 is thin for a same-day weather contract. The data currently favor the 30°C outcome at 69 percent, but this market is pricing a narrow range within a continuous temperature distribution. A one-degree shift in the actual maximum moves the entire contract. The MSS morning observation on June 11 is the only number that matters now.

LINES VERDICT

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The market has priced 30°C as the most likely single outcome for Singapore on June 11, driven by a sharp late-stage momentum surge consistent with a suppressed-temperature forecast. But this is a multi-bucket structure, and a one-degree overshoot to 31°C or undershoot to 29°C flips the contract entirely.

What the market says: The 30°C bucket carries a 69 percent implied probability as of June 10, reflecting strong recent conviction. With resolution at noon SGT on June 11 and total volume well below $1 million, this price can move sharply on the first morning temperature observations from Changi Station.

Key unknown: The MSS official daily maximum for June 11, as recorded at Changi Climate Station, is the sole resolution input. Any overnight forecast update from the Meteorological Service Singapore that shifts the expected high by even one degree would reprice every bucket in this market before noon.

Scientific Context

Singapore’s equatorial climate produces a narrow temperature range relative to most prediction market weather contracts. June daily maximums at Changi Station have historically averaged near 31°C to 32°C, with lower readings on days with early convective rainfall. The 30°C bucket sits at the cooler edge of the typical June distribution, meaning it resolves yes on days when cloud or rain activity limits afternoon heating. That climatological context supports the 69 percent reading only if the June 11 synoptic pattern is meaningfully more suppressed than average. The multi-bucket structure means the market is not just asking whether it will be warm, but whether the thermometer lands on a single degree target.

What would move this contract before June 11 resolution: An early-morning MSS reading above 30°C before noon, or an updated short-range forecast calling for clear skies in the morning hours, would shift capital toward the 31°C or 32°C buckets and push the 30°C yes price sharply lower.

Is 69 percent high confidence for a one-degree target?

In a multi-bucket temperature market, 69 percent for a single one-degree outcome is strong. It reflects a specific forecast signal, not just a prior. That conviction can unravel quickly if the morning temperature trends warmer than expected.

What does the no contract actually represent?

The no side covers every outcome except exactly 30°C: that includes 29°C, 31°C, 32°C, 33°C, 34°C or higher, and readings at or below 24°C. The 31°C and 32°C buckets are the primary no outcomes given Singapore’s June climatology.

What single event would move this price most?

The MSS Changi Station morning observation on June 11. Any reading trending above 30°C before noon SGT would shift traders into the 31°C or 32°C buckets immediately.

When does this contract resolve?

Resolution is set for 12:00 SGT on June 11, 2026. The official daily maximum from the Meteorological Service Singapore is the resolution input.

Is the volume here reliable enough to trust this price?

Total volume is $42,175, well below the $1 million threshold for high-confidence pricing. Liquidity at $84,677 exceeds volume, which helps stability, but a single large trade could reprice the contract sharply before resolution.