Highest temperature in Wellington on August 14?

Platform comparison

Market context

Wellington International Airport will record its highest temperature on 14 August 2026, with the market resolving to whichever temperature band contains the peak reading from the Daily Observations table on Weather Underground. The settlement window closes at midday UTC on that date, capturing the full diurnal cycle for the southern hemisphere winter day.

August temperatures at Wellington Airport typically range between 7°C and 13°C, with historical August averages clustering around 10°C. The 0% crowd probability suggests traders are pricing in expectations well below the lowest plausible range, or the market structure itself—requiring precise temperature-band prediction rather than binary outcomes—has suppressed participation. Historical data from the past decade shows Wellington rarely exceeds 15°C in August, with extremes above 18°C occurring roughly once per fifteen years during anomalous warm spells.

The primary catalyst affecting resolution will be any unusual anticyclonic system tracking across the lower North Island during mid-August 2026. Traders should monitor MetService New Zealand forecasts from early August onwards, particularly any advisories regarding warm northerly flows or high-pressure systems. The specific resolution dependency on Weather Underground's Daily Observations table rather than summary figures introduces a technical element; discrepancies between the two datasets have occurred historically, making source verification critical at settlement. Current market pricing reflects baseline winter conditions with no extraordinary weather systems currently scheduled or forecast at this distance.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Wellington on August 14? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

UK Frequently Asked Questions

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.