Wellington’s July 25 High Hit 12°C, Resolving the Market | Lines.com

Wellington recorded a daily high of exactly 12°C on July 25, 2026, closing the Polymarket temperature market with a confirmed YES on the 12°C outcome. The reading aligned with the city’s typical mid-winter daily maximum, ending a market that drew significant late-session conviction from traders who pushed prices sharply upward in the final 24 hours before resolution.

The market opened at an implied probability of 46% and closed at 100%, reflecting a dramatic repricing as observed temperature data aligned with the 12°C band. Total volume reached $139,439, with $104,105 of that arriving in the final 24 hours before the noon cutoff. The market was right, but it took most of the day’s trading window to get there.

Wellington Recorded 12°C on July 25, Confirming the Market Outcome

Wellington’s temperature on July 25 peaked at 12°C, landing precisely at the market’s favored outcome. July is the New Zealand capital’s coldest month, with historical daytime highs averaging near 11°C. The 12°C reading placed the day marginally above the seasonal norm, consistent with the mild maritime air that periodically pushes across Cook Strait during Southern Hemisphere winter northerly flows. NIWA’s long-run climatology for Wellington in late July supports a typical high range of 11 to 13°C, making 12°C the statistical center of gravity for any given day.

The final probability at close reached 100%, with no meaningful opposition from traders holding alternative outcomes. The 24-hour price movement of plus 20.5% told the real story: the 12°C outcome was not the consensus position at the start of July 25. Traders converged on the correct band only as real-time temperature readings narrowed the uncertainty window in the hours before the noon resolution cutoff.

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How the Market Performed on the Wellington Temperature Call

The market’s implied probability at article time stood at 46%, meaning traders initially treated the 12°C outcome as a coin-flip relative to the full range of alternatives spanning 7°C or below through 17°C or higher. That pricing reflected genuine distributional uncertainty across 11 discrete outcome buckets. A 46% opening price on a single bucket in an 11-outcome field is actually a strong lean, not a weak one. The market identified the correct temperature band as the most likely single outcome from the start, even if certainty arrived late.

Total volume of $139,439 against $296,343 in liquidity indicates solid price discovery quality. The high liquidity-to-volume ratio kept spreads tight and allowed the market to update efficiently as meteorological data came in. The final 24-hour volume of $104,105 represents 75% of total volume, a concentration that reflects informed traders acting on near-real-time weather station readings rather than forecasts.

• Resolution Outcome: 12°C confirmed as Wellington’s highest temperature on July 25, 2026.
• Article-Time Probability: 46% implied at market open.
• Final Price at Close: 100% (fully resolved YES).
• Total Volume: $139,439 across the market’s life.
• Market Assessment: Underpriced YES. The correct outcome was the modal choice at 46%, but full conviction arrived only with live data in the final hours.

What the 12°C Resolution Means for Wellington Temperature Markets

Wellington’s mid-winter temperature distribution is well-documented by NIWA, and the 12°C outcome sits squarely within the historical interquartile range for late-July daily highs. The resolution confirms that Wellington’s temperature markets in this format carry genuine information value: a 46% opening price on an 11-bucket market is a meaningful signal, and the market correctly identified the right bucket before the day began. The question is always whether the market can narrow faster than real-time weather observations do.

For prediction market structure, the multi-bucket discrete temperature format captures outcome risk better than a binary YES/NO framing would. The trade-off is that no single bucket reaches dominant pricing early, which keeps implied probabilities moderate even when one outcome is clearly favored. Markets like this one will price more efficiently as automated weather data feeds reduce the lag between observation and market update.

• Wellington’s July daily high distribution centers near 11 to 13°C, making adjacent buckets like 11°C and 13°C meaningful competitors in any given market.
• The 24-hour volume concentration of 75% shows that traders with access to real-time weather station data drove the resolution-period price movement, not pre-event forecasters.
• The $296,343 liquidity pool supported clean price discovery despite the rapid late-session convergence toward 100%.
• Future Wellington daily temperature markets may see earlier convergence if automated NIWA or MetService data integrations reduce the information lag between measurement and market price.

LINES RESOLUTION VERDICT

CONFIRMED: CORRECTLY IDENTIFIED OUTCOME

The market opened the 12°C bucket at 46% in an 11-outcome field, correctly flagging it as the modal outcome, and closed at 100% as live temperature data confirmed the reading. Here’s what the measurements are telling us: Wellington did exactly what its July climatology suggested it would do.

What the market showed: Opening implied probability was 46% versus a final close of 100%. The market identified the correct outcome from the start but required real-time observational data to reach full conviction. The data doesn’t care about the politics, and on July 25, it delivered squarely within the historical range.