Busan July 5 High Temp: Will It Hit Twenty-Eight?

Busan is heading into July 5 with the prediction market split on whether peak daytime temperatures will land exactly at 28°C. That single-degree precision is the whole game here. The market prices 28°C at 37.5% probability, meaning traders see a better-than-even chance the city lands somewhere else on the scale entirely. Two days out, forecasters are still watching a corridor of plausible outcomes spread across nearly a dozen bins.

The market question asks: what is the highest temperature in Busan on July 5? The YES contract for 28°C sits at 0.38, the NO side at 0.63. Resolution comes at 2026-07-05 12:00:00 UTC, and total volume stands at $3,315. Liquidity at $48,090 is unusually deep for a contract this size, which tells you someone built out the order book in advance.

How the Twenty-Eight Degree Contract Works

YES pays if Busan’s official daily maximum temperature on July 5 registers exactly 28°C. NO pays if the high lands at any other temperature, from 23°C or below all the way up to 33°C or higher. The spread of competing outcomes is wide, and each alternative bin is its own market. Resolution relies on official meteorological data for Busan.

• YES (28°C): priced at 0.38, implying roughly 38% probability.
• NO (any other temperature): priced at 0.63, implying roughly 63% probability.

The NO contract wins on a wide range of outcomes. Busan’s high landing at 27°C, 29°C, or any temperature outside the 28°C bin all pay out for NO holders. In July, Busan’s coastal climate typically pushes afternoon highs into the upper twenties, so the question is less about whether it is warm and more about which single degree captures the peak. Missing 28°C by even one degree is enough to flip the result.

Momentum and Market Signals

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The momentum composite is essentially flat. The one-hour price change is zero, the trend score sits at 46.11 on a neutral scale, and no 24-hour change data is available. The signal here is stillness: no new forecast data has landed in the last hour to push traders off their current positions. With resolution 48 hours out, the market is waiting for updated numerical weather prediction models to tighten the forecast cone.

Total volume of $3,315 is thin. The 24-hour volume matches total volume, which means this market opened and traded entirely within the last day. At this volume level, a single well-placed order can shift the price meaningfully. The $48,090 liquidity figure is the notable number: it dwarfs the traded volume by a factor of roughly fifteen, suggesting the market was seeded with deep liquidity but has not attracted significant two-way flow yet.

• The one-hour and flat trend composite signal no fresh forecast catalyst in the last hour.
• Total volume of $3,315 is below $1 million, meaning price can move sharply on any updated weather model run.
• Liquidity at $48,090 is deep relative to volume, providing tight spreads but masking the absence of real conviction.
• Trader sentiment leans bearish at 62.5% NO, consistent with the difficulty of hitting one specific degree bin.
• No whale trades are present, so there is no large-money directional signal to read.

Lines Analysis: Busan Temperature Precision

The Korea Meteorological Administration typically runs Busan forecasts with model uncertainty of plus or minus one to two degrees at the 48-hour range. That means even if the median forecast points to 28°C, the probability of landing exactly on that bin rather than 27°C or 29°C is genuinely limited. July in Busan sees frequent sea-breeze influence from the Korea Strait, which can suppress afternoon maxima compared to inland sites. If a sea breeze strengthens on July 5, the high could undercut 28°C. If it weakens or arrives late, 29°C becomes plausible.

The path to NO paying out is straightforward. Busan’s temperature landing at 27°C, 29°C, or any adjacent bin is enough. Weather forecast uncertainty alone, independent of any dramatic meteorological event, gives the NO side structural support. The 62.5% implied probability for NO reflects that reality directly.

• Korea Meteorological Administration model updates in the next 24 hours will be the primary price mover for this contract.
• Sea-breeze timing on the afternoon of July 5 will determine whether the high stays below or pushes above 28°C.
• A shift in the synoptic pattern, such as a stronger high-pressure ridge over the Korean Peninsula, would support 29°C or 30°C and reprice YES lower.
• Any marine layer or cloud cover forecast for Busan on July 5 would bias toward 27°C and also reprice YES lower.
• Official KMA station data at resolution will be the definitive source, so pre-resolution unofficial readings carry no weight.

Total volume of $3,315 keeps this market in the low-conviction category. The data currently favors NO by a wide margin, not because 28°C is unlikely in an absolute sense, but because the probability mass is spread across many adjacent bins and landing on any single one is inherently constrained. That is the market pricing measurement uncertainty, not a directional weather call.

LINES VERDICT

NO FAVORED, FORECAST PRECISION IS THE VARIABLE

The market correctly prices 28°C as the single most likely outcome while simultaneously pricing NO as the better bet, because hitting one specific degree bin in a spread of eleven outcomes is a structural challenge regardless of where the median forecast points.

What the market says: At 37.5% implied probability, the market treats 28°C as the modal outcome but not a confident one. With resolution in roughly 48 hours, any fresh KMA model run showing a shift toward 27°C or 29°C will move this price fast given the thin volume.

Key unknown: The Korea Meteorological Administration’s next forecast update for Busan on July 5 is the single most important input. A tightening of the predicted high to 28°C with reduced spread would push YES higher. A shift in either direction would send capital into adjacent bins.

Scientific Context

Busan in early July averages daily highs in the 27°C to 30°C range, with the Korea Strait moderating temperatures compared to Seoul. The city’s coastal exposure means sea-breeze onset time is a recurring variable in afternoon maximum readings. Historical July 5 observations for Busan show the high most often falling in the 27°C to 30°C corridor, which is consistent with the spread of liquidity across this market’s outcome bins. The fact that 28°C is the single most-liquid bin reflects that central tendency, while the NO premium reflects bin-level precision risk.