Semarang Weather in September

September weather

September feels hot in Semarang, especially when you're walking around in the afternoon. Highs reach 35°C, and the air can feel sticky. Rain falls on about nine days, but it's usually less of a washout than October.

You can explore Kota Lama's old streets or visit Sam Poo Kong, then take a break indoors during the hottest part of the day. Leave long outdoor walks for later, and don't count on a whole day at the beach without a shower interrupting it. If you hate crowds, September is easier than the July and August peak.

Events and crowds

There isn't a major fixed annual festival in Semarang in September. The city's best-known celebration, Dugderan, takes place before Ramadan, so its date changes each year. September is generally a regular working and school month, after the busy July and August holiday period.

That usually means quieter sights and better-value stays than in peak season, though prices can still vary around local events. For a city break, the calmer pace is a plus. You'll have more room to linger around Kota Lama's Taman Srigunting square or browse its cafés.

Make the heat work

Travelling with kids? Keep outdoor sightseeing short, then cool off inside Lawang Sewu, the former railway headquarters with its grand halls and long corridors. For an evening treat, look for lumpia Semarang, a local spring roll often filled with bamboo shoots and egg.

A useful local tip: visit Kota Lama later in the day, when the old buildings are more comfortable to explore, and finish near Taman Srigunting. September brings less rain than October, but showers still happen, so you'll want a sheltered café nearby.