Highest temperature in Wellington on August 6?

Platform comparison

Market context

Wellington International Airport’s maximum temperature on 6 August will come down to whether the day produces a brief mild spike above the winter norm, rather than anything resembling summer warmth. August in Wellington is typically cool, with average highs around 12°C and lows around 9°C, while current forecasts for the city point to temperatures in the low teens Celsius, underlining how narrow the likely range is for the airport reading.[3][5][16]

That makes a **0% YES** price easier to read as a statement about how unlikely an unusually warm daily high is, not as a claim that the temperature cannot move at all. Wellington’s winter climate is relatively stable, with daily highs usually clustering near 12°C and only limited day-to-day spread, so the market is effectively asking whether the airport can record a materially stronger-than-average afternoon.[3][8][17] In comparable August conditions, the city’s high often sits around 11–13°C, which would place the result in the lower temperature bands if that pattern holds.[10][16]

The main catalyst to watch is the actual airport observation stream, especially any late-morning or afternoon improvement in sunshine and wind, because even a small change in cloud cover can shift the day’s maximum. Current forecasts suggest mostly cool, breezy conditions with only modest warming potential, and recent Wellington outlooks have repeatedly emphasised northerlies, cloud and occasional showers rather than a sustained warm-up.[4][13][14][15] For traders, the key dependency is whether the day’s highest reading is set early under cloud or later if skies briefly clear; that is the factor most likely to move the market away from an absolute zero view.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Wellington on August 6? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

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

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

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.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

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 Election Predictions UK route into the same order book at 0% fees.

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.