Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 13°C | 100% |
| 7°C or below | 0% |
| 8°C | 0% |
| 9°C | 0% |
| 10°C | 0% |
| 11°C | 0% |
| 12°C | 0% |
| 14°C | 0% |
| 15°C | 0% |
| 16°C | 0% |
| 17°C or higher | 0% |
Market context
Wellington Airport is set for a cool, breezy August day rather than a meaningful warm-up, with the main forecast clustering around a high near 14°C to 15°C and rain or showers later in the day. AccuWeather’s day forecast shows 57°F/49°F, while WeatherWatch and the Met Office both point to cloud, northerly winds and only limited daytime warming, which makes the most likely resolution band the low-to-mid teens in Celsius rather than anything near the upper end of the month’s range.[2][5][12]
That is consistent with Wellington’s winter climatology: August highs are usually in the low teens, and long-run averages from WeatherSpark and comparable monthly outlooks place daily highs around 11°C to 12°C, with only occasional days pushing higher.[7][11] In other words, the current 0% YES price is not betting on an outlier; it is effectively pricing a normal cold-season day, where a station reading in the 13°C to 15°C bracket is far more plausible than a materially warmer spike.[1][11]
The main catalyst to watch is the *actual station observation* at Wellington Intl Airport, because this market resolves off the Weather Underground Daily Observations table rather than the summary high/low panel. Traders should therefore focus on whether the airport gets a brief midday lift before cloud and rain deepen, as Wunderground’s hourly forecast already points to rain developing after midnight and strong northerly flow through the day.[9] If nearby forecasters’ 57°F-style highs prove accurate, the deciding factor is likely to be the exact peak hour and whether it lands in the 13°C, 14°C or 15°C range.[2][9]
Methodology
This page tracks Highest temperature in Wellington on August 8? 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
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
UK Frequently Asked Questions
- 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 political prediction markets legal in my country?
- It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.
- 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.
Trade Highest temperature in Wellington on August 8? on Election Predictions UK
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