Highest temperature in Wellington on August 3?

Platform comparison

Market context

Wellington’s official airport reading is sitting in the low double digits early on, with current observations around **10°C** and light northerly flow, which keeps the market’s **0% yes** price in underdog territory for any meaningful late-day heat spike.[1][6] For a settlement based on the day’s *highest* temperature at Wellington International Airport, the consensus view is that August conditions are usually cool and changeable rather than warm, so pricing this outcome at zero suggests the crowd expects the day’s peak to stay well inside a modest winter range.[2][7][8]

That said, the historical framing matters: Wellington in August is typically a low-variance, low-ceiling temperature setup, but the key handicapper’s question is whether a brief clearing and wind easing can lift the airport reading enough to surprise on the upside.[2][7][10] Recent nearby forecast lines still lean cool and windy, with MetService showing around **4.5°C** at Wellington Central and only limited daytime recovery, while the Met Office is calling a maximum around **9°C** and AccuWeather’s airport feed is likewise pointing to cool, unsettled conditions.[6][7][5] That leaves the favourite as a sub-10°C top end, but a contrarian angle exists if sunshine arrives during the day and the northerly slackens, since the market’s zero price leaves any higher-temperature bin as pure value if conditions depart from the cool baseline.[1][10][13]

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.

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 Who Will Win 2026. 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.

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 Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.