Highest temperature in Wellington on August 6?

Platform comparison

Market context

Polymarket is pricing this Wellington airport temperature contract at **0% YES** today, which means the market is effectively saying the chance of the day’s high landing in the specified Celsius band is negligible. The event itself is straightforward: settlement depends on the **highest temperature recorded at Wellington International Airport** during the window, with the market resolving against the Wunderground daily history page for that station. On-chain, traders are still expressing that view in **USDC** on **Polygon**, with the outcome represented through conditional tokens rather than a direct weather bet.

That 0% print sits against Wellington’s normal August profile, where forecasts and climatology cluster in the low teens Celsius rather than anything extreme. Several weather references put August highs around **11°C to 12°C** and lows near **8°C to 10°C**, with the airport observation station currently showing cool conditions and no sign of heat-risk weather. In practice, that means the market is not pricing a freak warm spell; it is pricing the base case of a winter day that stays well below any hotter settlement band. Comparable August readings for Wellington are typically modest and fairly stable, so a zero-implied price is consistent with a market that sees little chance of an outlier.

For traders, the main catalysts are the **hour-by-hour airport observations** and any short-term forecast shifts from New Zealand services as the local day unfolds, because a brief northerly wind or sunny break can nudge the maximum up by a degree or two. The key dependency is the actual **Wellington Intl Airport Station** reading that Wunderground records, not city-centre weather or generic Wellington forecasts. If you are watching the contract on Polymarket, the practical question is whether the airport temperature can move materially off the low-teens pattern before the settlement window closes; with no major weather warning in the supplied sources, the market is reading as a low-volatility weather tape rather than a binary event driven by a specific announcement.

Sources: 1 · 2 · 3 · 4 · 5

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

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.

UK Frequently Asked Questions

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 Polymarket Alternative UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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%.