Highest temperature in Wellington on August 15?

Platform comparison

Market context

Wellington's maximum temperature on 15 August 2026 will be determined by the Daily Observations record from Wellington International Airport, with the crowd currently assigning zero probability to any specific outcome. This reflects the substantial uncertainty inherent in forecasting a single day's peak temperature nearly two years in advance, where atmospheric conditions remain entirely unknowable at present.

August in Wellington typically sees maximum temperatures ranging from 11–13°C, with the city's maritime climate producing relatively stable winter conditions. Historical data from the past decade shows daily highs rarely exceed 15°C during mid-August, though occasional warm northerly flows can push readings several degrees above the seasonal norm. The 0% crowd probability suggests traders view the market as premature for meaningful prediction, given the resolution window remains distant and weather forecasting skill deteriorates sharply beyond ten days.

No immediate catalysts will meaningfully shift probabilities until late July or early August 2026, when meteorological forecasts become operationally useful. Traders monitoring this market should track New Zealand MetService's seasonal outlooks and any emerging climate patterns in the Southern Hemisphere during mid-2026, though these remain speculative at present. The resolution source—Weather Underground's Daily Observations table from Wellington International Airport—is clearly specified, eliminating ambiguity around measurement methodology, though traders should verify the station's operational status closer to the settlement date.

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 Prediction Today, 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.

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 Prediction Today. 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%.