Highest temperature in Sao Paulo on June 30?

Platform comparison

Market context

The underlying event is the peak daily temperature recorded at São Paulo–Guarulhos International Airport on 30 June 2026, a date falling in the city’s coldest month. Historical data confirms July is São Paulo’s lowest-temperature month, with average highs near 72°F (22°C) and lows around 56°F (13°C)[2]. Recent records show the highest temperature in the last 15 days was 78.8°F (26°C) on 22 June, while the lowest hit 48.9°F (9°C) on 18 June[1]. Even the city’s hottest December reading reached only 35.9°C (96.6°F), far above typical June peaks[3]. Given that June 2024 at Guarulhos showed no extreme heat anomalies and historical extremes in São Paulo occur in November (38.5°C) rather than winter months[5], the 0% YES probability for any high-temperature range aligns with seasonal norms.

Traders should monitor Wunderground’s real-time updates for the Guarulhos station on 30 June, as the resolution source is explicitly tied to this dataset[6]. No weather-related suspensions or injuries apply, but atmospheric dependencies such as cloud cover, wind direction from the Atlantic, and rainfall could suppress temperatures further. Recent climate reports note increased variability in Brazilian summer patterns, yet winter months remain stable[7]. Watch for any sudden announcements from local meteorological services regarding heatwaves, though none are forecast for late June. The line-up for temperature drivers remains unchanged: cool southern winds and minimal solar intensity dominate this period, reinforcing the current market stance.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Highest temperature in Sao Paulo on June 30?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

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