Highest temperature in Manila on August 17?

Platform comparison

Market context

On 17 August 2026, the highest temperature recorded at Ninoy Aquino International Airport in Manila will fall into one of several defined ranges. In prediction markets, traders buy YES or NO shares representing their belief about whether an outcome will occur. A YES share pays out if the event happens; a NO share pays if it doesn't. Here, traders are essentially wagering on which temperature bracket will contain that day's peak reading, as measured in the Daily Observations table on Weather Underground rather than summary figures elsewhere on the platform.

Manila's August climate is remarkably consistent. Historical data from the airport station shows daily highs typically cluster between 29–33 °C during mid-August, with occasional spikes above 34 °C during particularly intense heat events. The 0% implied probability currently assigned suggests the market has settled on a baseline expectation—likely a moderate-to-warm range—with traders assigning negligible odds to extreme outcomes at either tail. Comparable August days over the past decade rarely exceed 35 °C at this location, though the 2016 heatwave period did push readings higher.

The primary variable affecting resolution is the monsoon pattern. The Southwest Monsoon typically dominates August across the Philippines, bringing cloud cover and occasional rainfall that can suppress afternoon temperatures. Traders should monitor the Japan Meteorological Agency's seasonal forecasts and any tropical cyclone activity in the Western Pacific, both of which influence Manila's daily highs. The settlement window closes at 12:00 UTC on 17 August 2026, giving traders access to real-time observations throughout the day before final resolution against Weather Underground's recorded data.

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

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.

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.

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.

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%.