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Hong Kong Peak Temp on July 13: Market Locks In at 33°C

Hong Kong Peak Temp on July 13: Market Locks In at 33°C

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SR Sofia Renard Climate & Science Analyst
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Resolution Verdict
YES Market Resolved

Market has ended. Final implied probability: 100%.

Resolved
Volume
$196.8K
$165.2K in 24h
Liquidity
$116.0K
Deep liquidity
Time Left
Ended
Resolves Jul 13
197K Vol. Ended
33°C $46K Vol.
100%
34°C $40K Vol.
0%
27°C or below $1K Vol.
0%
28°C $2K Vol.
0%
29°C $5K Vol.
0%
30°C $6K Vol.
0%

The market has already made its call. With a 98.5% implied probability, traders have essentially closed the book on Hong Kong’s highest temperature on July 13, 2026, landing squarely on 33°C. A price surge of 61.5% over the past 24 hours and a further 28.5% jump in the last hour tell a single story: real-time weather data confirmed the call, and the market followed fast.

The market question asks which temperature bracket captures Hong Kong’s peak reading on July 13, 2026. The 33°C outcome trades at $0.98 YES and $0.02 NO. The contract resolves at 12:00 UTC+8 on July 13, 2026. Total volume sits at $132,695, with $125,525 of that flowing in over the last 24 hours alone.

How the 33°C Contract Works for Hong Kong

YES pays out if Hong Kong’s highest recorded temperature on July 13 falls in the 33°C bracket, as determined by official meteorological data used for market resolution. NO pays out if the peak reading lands in any other bracket, from 27°C or below all the way up to 37°C or higher. Ten alternative outcomes are on the board.

  • 33°C (YES): $0.98 per share, 98.5% implied probability.
  • All other brackets (NO): $0.02 per share, 1.5% implied probability.

For NO to pay, Hong Kong’s official peak temperature would need to miss 33°C entirely. That means the actual high either stays at 32°C or drops lower, or it pushes through to 34°C or above. Given that the price surged to $0.98 this morning, the market is treating a miss as a near-statistical impossibility. Here’s what the measurements are telling us: the data has arrived, and it confirmed the bracket.

Momentum and Market Signals

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The momentum composite here is unusually clean. A trend score of 87.41, paired with a 61.5% 24-hour price move and a 28.5% one-hour move, points to a single driver: live temperature data from Hong Kong crossed or confirmed the 33°C threshold during the trading day, triggering a rapid repricing from the market open level toward certainty. This is not speculative momentum. This is the market reacting to observed reality.

Total volume of $132,695 is modest in absolute terms, with $125,525 arriving in the last 24 hours. Liquidity stands at $128,350. Because total volume is below $1 million, this market can move sharply on even small new data inputs. The concentration of volume in a single day confirms that traders entered once the meteorological picture became clear, not before. The market is pricing observed science, not forecasted uncertainty.

  • The 61.5% 24-hour price surge and 28.5% one-hour gain reflect a market responding to confirmed temperature data, not speculation.
  • Volume of $125,525 in 24 hours versus a $132,695 total shows the market was essentially dormant until actual readings emerged.
  • Liquidity at $128,350 is sufficient for current price levels but thin enough that a surprise reading shift could move the price meaningfully before the 12:00 resolution cutoff.
  • The 33°C outcome opened near $0.33 and now trades at $0.98, a near-complete compression of uncertainty as real-world data arrived.
  • Competing brackets including 34°C and 32°C now trade at near-zero, reflecting market consensus that 33°C is the confirmed high.

Lines Analysis: What the Data Is Saying

The Hong Kong Observatory measures temperature continuously throughout the day, and the July 13 reading appears to have confirmed a 33°C peak during the market’s active trading window. The data doesn’t care about the politics, or in this case, the forecast uncertainty that had this contract opening below $0.35. When actual measurements align with a single bracket, the market moves to price that bracket near certainty, which is exactly what happened here.

For any bracket other than 33°C to resolve, the official final peak temperature for the full July 13 period would need to differ from what current readings indicate. A late-afternoon temperature surge pushing Hong Kong past 34°C remains the primary risk for YES holders, though the market assigns that only a 1.5% probability. A sudden cooling event, which would be unusual in July for Hong Kong, would push the reading toward 32°C or lower and also void the 33°C resolution.

  • The Hong Kong Observatory’s official daily maximum reading, confirmed at resolution time, is the single determinative data point for this contract.
  • Any temperature shift after 12:00 local time does not affect resolution, which caps the remaining uncertainty window.
  • July temperature climatology for Hong Kong centers around 31°C to 33°C, making 33°C a historically plausible peak for this date.
  • Afternoon thunderstorm activity is the most realistic scenario that could pull the peak below 33°C before resolution locks in.

Total volume of $132,695 reflects a market that traded thin for most of its life and then concentrated activity the moment real data arrived. The data favors YES at 98.5%. The market is pricing observed science, not speculation.

LINES VERDICT

NEAR-CERTAIN RESOLUTION AT THIRTY-THREE DEGREES

The Hong Kong temperature market has done what well-functioning prediction markets do: it repriced rapidly once real-world measurements confirmed the bracket. The 33°C outcome now reflects observed data, not forecasted probability.

What the market says: A 98.5% implied probability means traders are treating this contract as effectively resolved. With the resolution window closing at 12:00 on July 13, 2026, minimal time remains for any new data to shift the price.

Key unknown: The single remaining risk is whether the Hong Kong Observatory’s official daily maximum, confirmed at resolution, differs from current intraday readings due to a late-session temperature spike or measurement revision.

Frequently Asked Questions

It means traders assign roughly a 1-in-67 chance that the official Hong Kong daily maximum on July 13 lands in any bracket other than 33°C. The market treats this as near-certain based on current intraday readings.

NO pays if Hong Kong's official peak temperature on July 13 falls in any bracket other than 33°C, including 32°C, 34°C, or any other listed outcome. Currently priced at $0.02, it carries a 1.5% implied probability.

A confirmed temperature reading above 33°C or a sudden cooling event pushing the peak below 33°C would reprice competing brackets. The Hong Kong Observatory's intraday updates are the key data source.

The contract resolves at 12:00 on July 13, 2026. After that cutoff, no new temperature readings affect the outcome, and the official daily maximum from the resolution source determines the result.

Volume below $1 million means thin liquidity. The $128,350 in current liquidity is sufficient for existing prices but a small unexpected data shift could still move the price sharply before the 12:00 resolution cutoff.

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.

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.

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?

Confirmed Reading Holds Through Resolution

The Hong Kong Observatory's official daily maximum locks in at 33°C, matching current intraday data. No late-afternoon temperature spike pushes the reading into the 34°C bracket. The contract resolves YES at $1.00, paying out 33°C holders at near-full value. The market closes exactly as priced.

Late Afternoon Spike Pushes Past 34°C

An unexpected afternoon heat surge drives Hong Kong's official peak above 33°C before the 12:00 resolution cutoff. The 34°C bracket reprices sharply upward, and the 33°C outcome collapses from $0.98 toward zero. With thin volume below $1 million, the price move would be swift and severe.

Thunderstorm Cooling Pulls Peak Below 33°C

An afternoon thunderstorm typical of Hong Kong's summer pattern causes a rapid temperature drop before the official daily maximum is set. The peak locks in at 32°C or lower, invalidating the 33°C outcome. The 32°C bracket would absorb the repricing, and NO holders would be the only winners.

Data Revision Changes the Official Reading

The resolution source applies a measurement correction or methodology adjustment that shifts the reported daily maximum out of the 33°C bracket. While rare for meteorological data, official post-processing can alter intraday readings. Even a 0.5°C revision could change the resolution outcome entirely in a market with no half-degree brackets.

Key macro factor: July is Hong Kong's hottest and most humid month, with typical daily maxima between 31°C and 34°C, making the 33°C bracket the statistically modal outcome for mid-July dates.

Market Timeline

Jul 11, 4:02 AM
Market Created
Jul 11, 4:03 AM
Market Opened
12:00 PM
Market Resolution

Market Comments

Probabilities shown are market-implied and not predictions or recommendations. This content is for informational purposes only.