Wellington July 2 High Temp: Will It Hit Thirteen Degrees?

Wellington’s weather markets are rarely this contested. The 13°C outcome for July 2 sits at 53.5% implied probability, but six other temperature outcomes are splitting the remaining market share. That’s not conviction. That’s a forecast model wearing a poker face.

The market question asks for the highest temperature in Wellington on July 2, 2026. The 13°C outcome trades at $0.54 YES and $0.47 NO. The market resolves at 12:00 UTC+12 on July 2. Total volume stands at $47,535, with $37,046 changing hands in the last 24 hours alone.

How the Wellington Temperature Contract Works

This contract resolves YES if Wellington’s highest recorded temperature on July 2, 2026, reaches exactly 13°C. A reading of 12°C, 14°C, or any other listed outcome triggers those respective contracts instead. The resolution source is Polymarket’s designated weather data provider.

• YES ($0.54): Wellington records a daily high of exactly 13°C on July 2.
• NO ($0.47): Wellington’s daily high falls on any temperature other than 13°C, including 12°C, 14°C, 11°C, 15°C, or outside the listed range.

The NO side pays out across a wide range of possibilities. Wellington averages daily highs near 11°C to 13°C in early July, meaning the 12°C and 14°C contracts are real competition for the 13°C leader. A single-degree miss in either direction collapses the YES position entirely.

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Momentum and Market Signals

The 24-hour price movement tells a clear story. The 13°C contract gained 6.5% over the last 24 hours, with a trend score of 41.74, suggesting moderate directional momentum without strong conviction. The 1-hour change is flat, so the surge happened earlier in the session and has since stabilized.

Total volume of $47,535 is thin by prediction market standards. The $37,046 in 24-hour volume is notable relative to total volume, meaning a large share of all trading happened in the last day. Liquidity at $91,189 is actually deeper than the volume, which means the order book can absorb new trades without dramatic price swings. Still, this is a low-volume market. A single well-sized bet can reprice the 13°C contract meaningfully before resolution tomorrow.

• The 13°C contract gained 6.5% in 24 hours, suggesting new money entered on updated weather model runs.
• The 1-hour change of 0.0% shows momentum has paused. The market is waiting for the next forecast update.
• Liquidity of $91,189 exceeds total volume, indicating a functional order book with room for new positions.
• Volume below $1M means this market can reprice sharply on a single updated weather forecast or large trade.
• Wellington’s July climatology places daily highs most frequently in the 11°C to 14°C band, which distributes probability across at least four competing outcomes.

Lines Analysis: Wellington’s July Climate and the Thirteen-Degree Threshold

Wellington sits at 41 degrees south latitude. In early July, the city is in the depth of Southern Hemisphere winter. MetService New Zealand’s historical records for Wellington show July daily maximum temperatures clustering between 10°C and 14°C, with 12°C and 13°C as the most common outcomes. The 13°C contract leading at 53.5% is climatologically defensible. It sits squarely in the statistical center of Wellington’s July temperature distribution.

What makes the NO side credible is the distribution spread. The 12°C outcome holds real probability. So does 14°C. Wellington’s Cook Strait location creates high weather variability. A frontal system from the Tasman Sea can push temperatures below 11°C. A brief northwesterly foehn can bump readings above 14°C. The 13°C contract is the mode of the distribution, but it is not a dominant probability. Roughly half the market believes some other temperature is more likely.

• MetService Wellington forecast updates before 12:00 NZST on July 2 are the primary repricing catalyst.
• A strengthening southerly front would shift probability toward 11°C and 12°C outcomes, pressuring the 13°C contract lower.
• A foehn wind event off the Tararua Range would push probability toward 14°C and 15°C, also pressuring 13°C lower.
• Stable high-pressure conditions with light winds favor the 12°C to 13°C range and support the current leader.
• The final weather observation time relative to the 12:00 resolution cutoff is worth monitoring. Maximum temperature can change in the final hours.

Total volume of $47,535 is modest. The data currently favors the 13°C outcome as the most likely single outcome, but the fragmented probability field means this market is pricing genuine meteorological uncertainty, not a high-confidence forecast. The 13°C contract is ahead because it is climatologically central, not because the weather is settled.

LINES VERDICT

NARROW LEADER, HIGH UNCERTAINTY

The 13°C contract leads because Wellington’s July climatology makes it the modal outcome. The market is pricing uncertainty, not science, and a single weather model update can shift the balance before resolution.

What the market says: The 13°C outcome carries a 53.5% implied probability. That is a bare majority in a field split across more than ten outcomes. The July 2 resolution deadline means any remaining volatility compresses into less than 24 hours from now.

Key unknown: The final MetService New Zealand forecast for Wellington on July 2 is the single most important data point. A southerly trough or a northwesterly foehn scenario would both reprice this contract away from 13°C before the 12:00 NZST cutoff.

Wellington Temperature in Scientific Context

Wellington’s climate is classified as oceanic temperate. The Cook Strait channel creates persistent wind exposure and rapid temperature variability. July mean daily maximums for Wellington sit near 11°C to 12°C based on long-term MetService records, making 13°C slightly above average for early July. The current 53.5% probability for 13°C implies the market expects a marginally above-average day, consistent with a weak high-pressure ridge rather than an active frontal pattern. If Southern Oscillation conditions are neutral, no strong El Nino or La Nina driver is biasing Wellington’s winter temperatures significantly in either direction for this specific date.