Wellington April 3 High Temp: 19C Contract at 31.5%

Wellington’s April 3 temperature market is sitting at 31.5% for a 19°C high, and the market is pricing uncertainty, not science. That gap between the 30-day opening price of 52 cents and today’s 32 cents is the story. Something in the forecast data moved traders hard, and the 19°C contract has been losing ground since March 31.

The highest temperature in Wellington on April 3 resolves in under 24 hours. With $57,201 in total volume and a current implied probability of 31.5%, this is a short-fuse weather contract. The YES price sits at 32 cents. The NO side holds at 69 cents. Resolution happens at 2026-04-03 12:00:00, which makes the next synoptic weather analysis the only thing that matters right now.

How the Wellington April 3 Temperature Contract Works

This contract resolves YES if Wellington’s official daily high temperature on April 3 hits exactly 19°C. The resolution source is market resolution, tied to official meteorological observation. Every other outcome, including 18°C, 20°C, and everything outside that range, resolves this contract NO.

• YES: Wellington records a 19°C high on April 3. Price: $0.32. Probability: 31.5%. Resolves: 2026-04-03 12:00:00.
• NO: Wellington records any temperature other than 19°C as its daily high on April 3. Price: $0.69. Probability: 68.5%. Resolves: 2026-04-03 12:00:00.

NO buyers need the actual high to land anywhere outside 19°C. That includes 18°C, 20°C, or anything above 21°C or below 16°C. Wellington’s early-April weather sits at the tail end of summer, with typical daily highs ranging from 17°C to 20°C. The spread of competing outcome contracts, including live markets for 17°C, 18°C, 20°C, and 21°C, means probability is fragmented across multiple temperature bins. That fragmentation structurally suppresses any single outcome above 50%. NO wins if the forecast is wrong in any direction.

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Momentum and Market Signals

The momentum picture here is a composite of a 24-hour price gain of 2.0% and a sharp prior selloff. The 19°C contract dropped roughly 20 points on March 31, then recovered 8 points the same day. That whipsaw pattern points to a forecast revision, likely a model update from MetService or an international NWP ensemble, that initially pushed traders away from 19°C before partial recalibration brought some back. The 24-hour uptick of 2.0% suggests the immediate forecast window is stabilizing around this temperature bin.

Total volume of $57,201 with $35,523 traded in the last 24 hours shows genuine short-term activity. Available liquidity sits at $23,769. This is well below the $1M threshold, which means a single large order can move the price sharply. Any new MetService forecast or NWP model output published before resolution could cause an immediate reprice. Treat this liquidity level as thin and the price as reactive.

KEY FACTORS:

• 24-hour price change: Plus 2.0%, partial recovery after the March 31 selloff. Suggests current models lean toward 19°C as a plausible but not dominant outcome.
• 1-hour price change: Stable. No immediate catalyst has hit in the last hour. Market is in a holding pattern ahead of the next forecast cycle.
• 30-day price range: Contract opened at 52 cents and now trades at 32 cents. A 20-point drop reflects genuine forecast divergence from early expectations.
• Competing contracts: The April 4 Wellington temperature market prices its leading outcome at 39%, and April 5 at 26%. The declining probability sequence across days reflects growing forecast uncertainty at longer lead times.
• Liquidity risk: At $23,769 available, this market moves on small volume. Any NWP ensemble update before 2026-04-03 12:00:00 will reprice fast.

Lines Analysis: Wellington April 3 High Temperature

The case for YES rests on Wellington’s early-April climatology. Mean daily highs in Wellington during the first week of April cluster between 17°C and 20°C, with 19°C sitting squarely in the central range. The 2.0% 24-hour gain suggests the most recent forecast cycle moved slightly toward this bin. If MetService’s deterministic forecast currently shows 19°C, the contract is arguably underpriced at 31.5%, given that forecast accuracy at 12 to 18 hour lead times is generally high for a coastal station like Wellington.

The case for NO is structural. Temperature outcome markets distribute probability across 10 or more competing bins. Even if 19°C is the modal forecast, the probability of the actual observation landing exactly at that integer value is inherently capped. Wellington is also exposed to Cook Strait wind dynamics that can shift afternoon highs by 2°C to 3°C within hours. The 30-day high of 52 cents shows this contract had stronger market support earlier. The selloff from 52 cents to 27 cents before partial recovery signals that at least one major forecast revision pushed the expected high away from 19°C, toward 18°C or 20°C.

SIGNALS TO MONITOR:

• MetService deterministic forecast: If the official forecast shifts to 19°C as the point estimate in the next update cycle, YES should move toward 40 cents or higher.
• NWP ensemble spread: A tight ensemble centered on 19°C would compress uncertainty and lift YES probability. A wide spread benefits NO across all temperature bins.
• Cook Strait wind direction: Northerly flow warms Wellington afternoons. A shift to southerly before midday April 3 would push the high toward 17°C or 18°C, repricing 19°C downward.
• Related markets: The April 4 contract at 39% for its leading outcome suggests forecasters see slightly more certainty for the following day. A shift in the April 4 market could signal a broader synoptic pattern change affecting April 3.
• Trading volume spike: Given thin liquidity, any sudden volume surge in the final hours before resolution means a trader has seen updated forecast data. Direction of that volume is the signal.

The $57,201 in total volume is modest for a market this close to resolution. The data doesn’t care about the politics, and here the data is a 12 to 18 hour weather forecast for a single coastal city. Here’s what the measurements are telling us: the most recent model run moved slightly toward 19°C but not convincingly. Probability is fragmented, liquidity is thin, and the contract reprices fast on new information. The market is pricing uncertainty, not science.

LINES VERDICT

NO Favored on Forecast Fragmentation

Wellington temperature markets spread probability across too many bins for any single outcome to dominate. The structural ceiling on YES, combined with a prior forecast revision that drove a significant selloff, keeps NO as the better-supported position.

What the market says: 31.5% for 19°C, which translates to roughly one-in-three odds on a precise temperature outcome. That probability is reactive and will shift sharply as the resolution window closes on 2026-04-03 12:00:00.

Key unknown: The next MetService forecast update is the single most important catalyst. A point estimate of 19°C in the official forecast would push YES significantly higher. A shift to 18°C or 20°C would collapse it toward 20 cents.