Tallinn Weather in September

September weather in Tallinn

September feels cool and changeable, with mild afternoons and chilly evenings. The average high is 16°C and the low is 11°C. Rain falls on 11 days, and cloud often softens the light. You'll still have enough daylight for a full day out, but don't count on long, sunny afternoons.

It's a good month for walking Tallinn's Old Town, climbing Toompea Hill and visiting museums without summer heat. Kadriorg Park is lovely for a stroll, though wet paths can make a long wander less appealing. The Baltic Sea is cool, so treat Pirita Beach as a seaside walk rather than a swimming day. Skip plans that depend on sunshine; keep an indoor stop in mind.

Events and crowds

The Tallinn Marathon usually takes place in September, bringing runners and supporters into the city. Routes pass central sights, so expect some road closures and a busier feel around race day. Check the event route before setting out.

Summer is Tallinn's busiest season, and September is generally quieter as school routines return. You're likely to find the Old Town easier to explore than in July or August. Prices can also ease after the summer peak, though the marathon weekend may be an exception.

Couples who prefer calm evenings may enjoy September more than high summer.

A useful local tip

For a cosy break from damp weather, head to Balti Jaama Turg, the market beside the railway station. You can browse local food stalls and warm up indoors, then walk to Telliskivi Creative City nearby. The two areas make an easy pairing when the Old Town's cobbles are slick.

If you're visiting Toompea, take care on the steep, worn streets after rain. For a drier route between the lower town and the hill, use the covered passage at St Catherine's Passage only as a brief stop, not a shortcut; it doesn't connect the two.