Highest temperature in Tokyo on July 23?

Platform comparison

Market context

Tokyo’s temperature range on 23 July is being driven by the day’s actual high at Haneda rather than a broader forecast, and the market is already clustered tightly around a hot-summer outcome. The crowd-implied 0% for **YES** contrasts with adjacent temperature bands that are typically the only realistic landing zones in Tokyo’s July heat, with external market pricing elsewhere showing **35°C** as the clear frontrunner and **36°C** a distant second. Tokyo in July is normally hot and humid, with average highs around **29–33°C** and occasional peaks in the **mid-to-high 30s** during heat waves, so a top-end reading is not unusual for late-July conditions.[1][2][4]

For historical context, July in Tokyo is shaped by the tail end of the rainy season and then by a quick shift into intense summer heat, which makes the day’s maximum more important than the morning state of the weather. Comparable guides describe the month as muggy, with humidity often in the mid-70s to 80% range and daytime highs that can exceed **35°C** in stronger heat events, while recent record heat across Japan has reinforced how easily temperatures can overshoot seasonal norms.[2][3][5] That means the market is leaning on the same basic catalyst as any late-July Tokyo temperature bet: whether the day develops into a standard hot afternoon or a more extreme heat spike.

The main things to watch are the day’s hourly warming trend, cloud cover and any shower activity in the Tokyo area, plus whether regional heat advisories persist through the afternoon. For traders, the relevant catalyst is the combination of local midday heating and any storm coverage that could cap the maximum before the settlement window closes, with Wunderground’s Haneda history page being the actual resolution source rather than a general Tokyo forecast.[1][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Tokyo on July 23? 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 Trump Prediction 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.

FAQ

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.

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.

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.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.