The most precise weather prediction tool for Seoul

Win Seoul weather markets on Polymarket

Built for successful prediction market trades. We turn hourly-updated forecasts into clear edges so you know exactly which outcome to buy — and link you straight to Polymarket’s Seoul weather markets.

See what you get

What you get

Everything you need to act on Seoul temperature markets with confidence

Seoul events list in dashboard

Real Seoul temperature events

Live Polymarket events like “Highest temperature in Seoul on February 10?” — the same markets you can trade on.

Edge ladder and model vs market

Model vs market edges

We turn Open-Meteo forecasts into probabilities per outcome and compare them to Polymarket prices. See where the edge is.

Polymarket event page

One-click to Polymarket

Every recommendation links straight to the event on Polymarket so you can place your bet without hunting for the market.

Fresh forecast data

Updated daily

Forecasts refresh every hour so you get current numbers for the next 14 days, aligned with when markets resolve.

Today’s free pick

One real edge, on us — so you can see how we think. Trade it on Polymarket, or get full access for every event.

Highest temperature in Seoul on February 12?

Feb 12 · 1d left

Threshold7°C or higher

Our model

100%

Market

18¢

Edge

+82%

Trade on Polymarket

Want every Seoul event and edge? Get full access to the dashboard.

Today’s best opportunities

Live model-vs-market edges for Seoul (updated hourly)

SeoulFeb 12
1d
+82%edge
Threshold7°C or higher

Model

100%

Market

18¢

Source: Open-Meteo

SeoulFeb 11
20h
+70%edge
Threshold6°C or higher

Model

73%

Market

3¢

Source: Open-Meteo

How it works

The same models hedge funds use, applied to prediction markets

ECMWF + GFS Ensembles

51-member ECMWF and 31-member GFS ensemble runs, updated every 6 hours. Full probabilistic distributions, not just point forecasts.

3yr City Calibration

Bias-corrected against 3 years of station observations for each city. Sharper probability estimates than raw model output.

Auto-detect Ladders

Scans every temperature threshold on Polymarket. Flags ladders where model probability diverges from market price by 5%+.

Live Polymarket Prices

Real-time order book data from Polymarket. Edge calculations update as prices move so you never act on stale signals.

Simple pricing

One plan, full access to Seoul dashboard and edges

HolyWeather Pro

Seoul dashboard + edges

$99/mo
Seoul weather dashboard
ECMWF + GFS ensemble data
Seoul-specific calibration
Model vs market edge detection
Real-time Polymarket prices
One-click links to Polymarket events
Hourly-updated forecasts