Highest temperature in Taipei on August 9?

Platform comparison

Market context

Taipei’s highest temperature on 9 August will be judged off Weather Underground’s Daily Observations for Taipei Songshan Airport Station, so the key number is the day’s observed peak in Celsius rather than the broader “high” in summary forecasts. On the live forecast comparison, the market’s 6% YES implies only a small chance that the station posts a result in the specified winning range, and that looks broadly in line with the available weather forecasts showing a wet, warmer-than-average day rather than an obvious heat spike. AccuWeather has Taipei City at 88°F/81°F for 9 August, with “heavy rain” and “not as hot” language, while timeanddate and The Weather Network similarly point to rain and a high near 30°C or 81°F, which is much closer to the high-20s than the low-30s.[13][12][10][1]

Historically, Taipei in August usually sits in the low-30s Celsius for daytime highs, but rain and cloud cover often cap the realised maximum below the seasonal norm. Third-party guides put typical August highs around 33–34°C, while WeatherSpark’s monthly climatology also frames August as a hot, humid month; that makes a 6% price look cautious only if one expects a brief clearing or a localised hot pocket near Songshan Airport, not if one reads the current rainfall forecasts literally.[6][15][5] By comparison, the Bitget predictions market shows the most crowded outcomes clustered in the mid-to-high 20s, with “26°C or below” attracting the largest posted volume and 29°C/28°C also meaningfully traded, suggesting the wider market is leaning cooler than a simple seasonal average would imply.[4]

The main catalysts for traders are the realised airport observation around the midday settlement window and any short-term shift in rainfall timing, since convective rain or persistent overcast can suppress the day’s peak quickly. No major scheduled policy or macro event should matter more than the weather itself; the practical dependencies are the live observation cadence at Songshan Airport and whether the forecast-heavy rain persists through late morning into early afternoon, because that determines whether the day tops out in the 20s or pushes back towards 30°C.[13][12][10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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 PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.