Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Klarna UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 37°C | 100% |
| 32°C or below | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 38°C | 0% |
| 39°C | 0% |
| 40°C | 0% |
| 41°C | 0% |
| 42°C or higher | 0% |
Market context
Madrid’s daytime high on 2 August will be set by the maximum recorded at Adolfo Suárez Madrid-Barajas Airport, so the key question is whether the city peaks in the mid-30s Celsius or pushes a notch higher. Seasonal context points to a hot, dry Iberian summer: Madrid’s August average high is about 89°F/32°C, while forecast-style guides place typical August daytime maxima around 32–31°C and note that the month is usually among the hottest of the year[1][2][3].
That is why a 0% yes price should be read cautiously rather than literally as certainty. Recent comparable climate context shows Madrid has already seen severe early-summer heat in 2026, including a Reuters report of temperatures reaching 40°C during June’s first official heatwave, and AEMET’s Madrid-Retiro record page shows an absolute August maximum of 40.7°C, so the upper tail is clearly plausible in peak-ridge setups[16][11]. Against that backdrop, lower single-digit outcomes only become attractive if clouds, marine air intrusion, or a weaker synoptic ridge cap the airport reading below the most popular bands.
For traders, the practical catalysts are funding friction and data timing rather than just the forecast. Book depth tends to improve when deposits clear quickly and cheaply, so markets can tighten if users can move money in via low-friction rails such as Klarna or SEPA, while USDC funding can matter when crypto balances are already on exchange-like venues; by contrast, withdrawal delays often reduce fresh two-way flow. On the weather side, the main dependency is the day’s evolving synoptic pattern and the resolution feed from Wunderground’s history page for LEMD, so late revisions to the airport’s recorded maximum remain the decisive input until the following day’s first datapoint is published[12].
Methodology
This page compares Highest temperature in Madrid on August 2? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.
Resolution & payout
Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).
FAQ
- What does SOFORT cost as a deposit method?
- Polymarket Klarna UK charges no fees for SOFORT. The only cost is the internal FX spread (typically <1%) on EUR→USDC conversion. SOFORT itself has no end-user fees — the platform absorbs acquirer costs.
- How fast is SEPA deposit?
- SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.
- Can I deposit with a credit card?
- Yes, Visa and Mastercard. Credit card deposits carry a ~2.5% acquirer surcharge (standard for card payments). Apple Pay and Google Pay run on the same card rails — same surcharge.
- What's the minimum deposit?
- 10 EUR / 10 USD equivalent. No upper limit, but deposits over $1,500 lifetime volume trigger a quick KYC flow (typically 5-10 minutes).
- How do withdrawals work?
- Identical methods in reverse. SEPA withdrawal: T+1 (standard) or under 10 seconds (SEPA Instant). Klarna withdrawals process via bank-account refund. USDC withdrawal to external wallet: Polygon gas cost (typically $0.01).
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