Pronóstico: Highest temperature in Wellington on August 9?

Platform comparison

Market context

Polymarket is pricing this Wellington airport temperature contract at **0% YES** right now, which on the Polygon-based USDC market means the crowd sees essentially no chance the highest reading in Weather Underground’s Daily Observations table for 9 August 2026 lands in the winning Celsius band. The underlying event is straightforward: it will be the day’s peak temperature at Wellington Intl Airport Station, resolved from the **Daily Observations** table rather than the Day High & Low summary, so only the station’s recorded maximum matters for settlement.

That low price sits against a fairly cool August climate profile for Wellington. Historical and long-run reference data put August daytime highs around **12–13°C**, with typical daily highs near **12°C** and rare excursions above the upper teens; Weather Underground’s recent Wellington August history also shows daily highs mostly in the low-to-mid teens Celsius, including readings such as 11°C, 13°C and 16°C on comparable days. For a YES outcome, the market needs the day’s maximum to fall into the contract’s specified Celsius range, so the gap between the implied price and the usual winter baseline is the key comparison for Polymarket users assessing conditional-token risk.

The practical catalysts are meteorological rather than policy-driven: traders should watch the Wellington forecast cycle, any fronts crossing New Zealand’s lower North Island, and the timing of the airport station’s final observation updates before the **12:00:00Z** settlement window ends. Weather Underground is the resolution source, so a brief warm spike in the airport’s hourly record can matter even if the summary panel differs, and the market will settle from the daily table entry if there is any mismatch. Current forecast feeds for Wellington point to modest August highs rather than heat, which helps explain why the contract remains pinned near zero despite the possibility of a late-day outlier.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: Highest temperature in Wellington on August 9? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

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 Polymarket Qué Es. 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.

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.

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.