Tel Aviv May 21 High: Will It Hit Twenty-Four?

One degree of temperature separates a winning bet from a losing one. That is the reality of this contract. The question is whether Tel Aviv reaches exactly 24°C as its daily high on May 21, 2026, and right now traders are saying probably not. The market prices that outcome at 35.5%, meaning nearly two-thirds of capital is sitting against it.

This is a short-duration weather market resolving at 2026-05-21 12:00:00. The one-hour price change of -8.0% signals that recent trader activity has moved away from the 24°C outcome. Combined with a trend score of 50.49, the market is sitting near a neutral read, but the directional lean is clear. The market is pricing uncertainty, not science.

How the Twenty-Four Degree Contract Works

This contract resolves YES if the highest recorded temperature in Tel Aviv on May 21, 2026 is exactly 24°C. Resolution follows the data source designated by Polymarket’s market resolution terms. A reading of 23°C, 25°C, or any other temperature means YES does not pay out. The contract closes at 2026-05-21 12:00:00.

• YES (24°C is the daily high): Priced at 0.36, implying a 35.5% probability.
• NO (any other temperature is the daily high): Priced at 0.65, implying a 64.5% probability.

The NO position covers every outcome except 24°C exactly. That is a wide net. Tel Aviv’s late-May climate sits in a transitional window where daytime highs regularly range between 22°C and 28°C. A reading of 25°C or 26°C is just as damaging to YES as a reading of 19°C. The 24°C target is a single point on a wide distribution, and that is what makes the NO position structurally dominant here.

Momentum and Market Signals

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The combined momentum signal, a one-hour drop of -8.0% with a trend score of 50.49, suggests recent trades moved against the 24°C outcome. The most likely driver is short-range weather model updates. As May 21 approaches within 24 hours, numerical weather prediction models for the Tel Aviv area sharpen considerably. If those models are pointing toward a high of 25°C or 26°C, that would explain why capital is moving to NO.

Total market volume is $3,470, with $3,454 of that coming in the last 24 hours. Liquidity stands at $11,523. This is a thin market. Volume well below $1 million means a single moderate-sized trade can move the price sharply. The 24-hour volume spike tells a clear story: this market came alive as resolution approached. Treat any single price move here as a signal, not a trend.

• The 1-hour price change of -8.0% combined with a 50.49 trend score points to bearish momentum on the 24°C outcome, most likely driven by incoming forecast data for May 21.
• Total volume of $3,470 confirms this is a thin market. Large percentage swings can occur on small trades.
• Liquidity of $11,523 provides a reasonable order book relative to volume, but the market is not deep enough to absorb sustained one-directional flow without repricing.
• The trader sentiment breakdown of 35.5% YES versus 64.5% NO reflects a clear lean, not a contested market.
• Open interest stands at $0, indicating positions are not being held in size ahead of resolution.

Lines Analysis: Tel Aviv Temperature Forecasts

Here is what the measurements are telling us. Tel Aviv in late May historically averages daily highs in the 24°C to 27°C range. The Mediterranean coast warms steadily through May, and the 24°C threshold sits at the cooler end of what is typical for this time of year. A 24°C reading is possible, but it requires conditions cooler than the seasonal mean. A sea breeze, cloud cover, or a short-wave trough could keep the temperature there, but those conditions would need to hold through the afternoon peak.

What makes the NO position real is the breadth of the alternative. Short-range forecasts for Tel Aviv covering May 21 would need to lock in exactly 24°C, not 23°C and not 25°C, for YES to resolve. Any model showing a warmer or cooler peak immediately shifts probability away from YES. The data doesn’t care about the politics of where traders want this to land. If regional synoptic patterns are pushing a slightly warmer air mass over the Israeli coast, 25°C or 26°C becomes the more probable reading.

• Israel Meteorological Service short-range forecasts for May 21 are the single most important signal. Any update showing a peak above 24°C would push YES lower immediately.
• ECMWF and GFS model runs for the eastern Mediterranean over the next 12 hours will sharpen the temperature range. Convergence on 25°C or higher reinforces NO.
• Sea surface temperatures in the eastern Mediterranean affect coastal Tel Aviv readings. A warmer sea this season would bias the high toward the upper end of the range.
• Synoptic patterns, specifically any low-pressure system or cold front over the Levant, could push the high below 24°C, which would also resolve NO.

At $3,470 in total volume, this market reflects a narrow slice of trader conviction. The momentum and pricing both favor outcomes other than 24°C. The data as it stands points toward NO, but a single weather model update in the next 12 hours could reprice this contract sharply in either direction.

LINES VERDICT

NO: Thin Odds for a Single-Degree Bull’s-Eye

Hitting exactly 24°C in a range that spans multiple degrees in either direction is a low-probability event, and the market has priced it that way. The momentum is negative, the NO side holds a clear majority, and the seasonal baseline leans warmer.

What the market says: The 35.5% probability on YES reflects a market that sees the 24°C outcome as possible but not favored. Given the thin volume, the price could move fast on any short-range forecast update before the 2026-05-21 12:00:00 resolution.

Key unknown: The Israel Meteorological Service short-range forecast for Tel Aviv on May 21 is the decisive input. A forecast converging on 25°C or above would confirm NO and likely push YES pricing lower before the market closes.

Scientific Context

Tel Aviv sits on the Mediterranean coast and experiences a classic Mediterranean climate. May is a shoulder month: the summer heat has not fully arrived, but the cool season is over. Daily highs in the 23°C to 27°C range are all within one standard deviation of normal for late May. The specific outcome of exactly 24°C has roughly even competition from both the 23°C and 25°C to 27°C outcomes, which is why the YES price sits well below 50%.

Before 2026-05-21 12:00:00, the two events that would reprice this contract are a short-range forecast update from regional numerical weather prediction models and any observational data from Tel Aviv stations during the morning of May 21. Once the afternoon peak passes, the contract resolves immediately.

Frequently Asked Questions

• What does 35.5% probability mean here? It means the market estimates a roughly one-in-three chance that Tel Aviv’s high on May 21 lands exactly on 24°C, not above or below.
• What does the NO contract pay out on? NO resolves correctly if Tel Aviv’s daily high on May 21 is any temperature other than 24°C. That includes 23°C, 25°C, 26°C, and all other listed outcomes.
• What data moves this market most? Short-range weather forecasts from the Israel Meteorological Service and European weather models for the Tel Aviv area on May 21 are the primary price movers.
• When does this contract resolve? The market closes at 2026-05-21 12:00:00, with resolution based on the official highest temperature reading for Tel Aviv on that date.
• Is the volume reliable enough to trust the price? Total volume is $3,470, which is well below $1 million. This is a thin market. Prices can shift significantly on a single trade, so treat current pricing as a rough signal rather than a precise probability estimate.

This analysis reflects market conditions as of 2026-05-20 12:17:31. Prediction market probabilities are volatile and shift as new data and regulatory decisions emerge, especially as the 2026-05-21 12:00:00 resolution date approaches. Lines.com does not accept bets or provide financial or gambling advice. All market outcomes are uncertain.