Helsinki weather markets: station EFHK

Polymarket weather markets for Helsinki settle on the official reading from EFHK. The settlement day runs midnight to midnight in Europe/Helsinki, and buckets are one degree Celsius wide.

Settlement source cited in the current market rules (checked 30 September 2026): weather.gov timeseries (EFHK).

What PollyWetter shows for Helsinki

• The official EFHK reading and the running daily extreme so far.
• A calibrated live estimate beside the official figure, never instead of it.
• Implied probability for each bucket from the live order book.
• Our own forecast accuracy for EFHK, so the estimate can be judged.

Before you trade Helsinki

Every other city and the station that settles it is listed on the settlement station table.

Check the market rules for the station, because the settlement station is the market's decision and can change. Remember the day boundary is Europe/Helsinki: a market titled for one date can still be open while it is the previous day where you are.

Open the free dashboard