Highest temperature in Taipei on August 18?

Platform comparison

Market context

Taipei's weather pattern for mid-August 2026 remains subject to the typical monsoon dynamics that characterise the season, with the highest daily temperature on 18 August dependent on cloud cover, wind direction, and any passing weather systems. The settlement mechanism specifies resolution via Weather Underground's Daily Observations table at Taipei Songshan Airport Station, which often records slightly different peak temperatures than summary forecasts due to measurement timing and methodology differences.

Historical August data from Taipei shows daily highs typically ranging between 32–36°C during this period, though extreme heat events pushing toward 37–38°C occur roughly once every three to five years. The 0% crowd probability suggests traders are either uncertain about the specific threshold being tested or expect conditions to remain within typical ranges. August is Taiwan's peak typhoon season, and any tropical system approaching the region could suppress temperatures significantly, whilst high-pressure systems overhead tend to drive readings toward the upper end of the seasonal range.

Traders should monitor tropical cyclone forecasts from the Central Weather Administration and Japan Meteorological Agency in the week preceding 18 August, as these directly influence whether monsoon heat dominates or cooler, wetter conditions prevail. Real-time satellite imagery and upper-air pattern shifts in the ten days before the settlement date will provide the clearest signal; current seasonal models typically become reliable only five to seven days ahead for specific daily maxima in this region.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

UK Frequently Asked Questions

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.