Highest temperature in Taipei on August 8?

Platform comparison

Market context

Taipei’s highest temperature on 8 August will be set by the **Daily Observations** table at Weather Underground for Songshan Airport, not by the site’s summary high-and-low box, so the key question is whether the station tops the lower 30s, the upper 30s, or something in between. The crowd is pricing **0% YES**, which is an extreme read only if the market’s relevant bucket is already considered out of reach; by contrast, public weather forecasts for Taipei on 8 August still cluster around a hot, humid day, with AccuWeather showing a high near 90°F/32°C and a broader August range reaching the mid-90s Fahrenheit, while Timeanddate and Yandex both point to highs in the high 80s to mid-90s Fahrenheit equivalent.[1][7][11][15][16]

Historical context argues against treating 0% as a meaningful forecast of the actual temperature ceiling. Taipei’s August climate is normally hot, with average highs around 30–34°C across the comparator sources, and the city has a record 39.3°C for 8 August, underscoring that extreme heat is possible even if not typical.[2][4][9][14] That history also explains why the market should be read as a probability distribution over temperature bands rather than a binary “hot/cold” call: if the day lands near 32°C, the lower buckets are plausible; if it spikes into the mid-30s, the upper bands become relevant, and the distribution can move quickly because a few degrees determines the settlement range.[2][3][12]

The main catalyst is the actual station observation path from early morning through the settlement cutoff, with rainfall and thunderstorms a material downside risk to the top-end temperature because they can cap heating and compress the daily range. Current forecasts diverge on the details: AccuWeather shows heavy rain and thunderstorms, while Timeanddate gives very high rain odds and a lower apparent daytime high; both would favour a result below the hottest historical August outcomes if they verify.[7][11][16] Traders should watch the latest Taiwan forecasts and radar updates rather than the headline “day high” summaries, since the market settles off the recorded peak in the observations table, not the forecast-derived summary.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Taipei on August 8? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Best Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.