Semarang weather in September 2026

Expect daytime maximum temperatures of 34°C in Semarang, Indonesia in September and very high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 62 mm of rainfall in the month.

  • 34°C maximum daytime temperature in September in Semarang34
    34°C max day temperature
  • 10 hours of sunshine per day
  • 4 days with some rainfall in September in Semarang4
    4 days with some rainfall
  • 22°C minimum night-time temperature in September in Semarang22
    22°C min night temperature
  • 12 hours of daylight per day in September in Semarang12
    12 hours of daylight per day
  • Very high heat & humidity in September in SemarangVH
    Very High heat & humidity
  • 62 mm monthly rainfall in September in Semarang62
    62 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Semarang11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Semarang28
    28°C sea temperature

More about Semarang

Semarang by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Indonesia

Wendy Wu Tours: Top deals on Southeast Asia

  • Book tours to Cambodia, Indonesia, Laos & Malaysia
  • Plus Myanmar, Philippines, Singapore, Thailand & Vietnam
  • Fully ABTA & ATOL protected escorted tours
Go to Wendy Wu Tours deal >>

View all Wendy Wu Tours offers

The September weather guide for Indonesia (Semarang) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Indonesia

How hot is it in Semarang in September?

Daytime temperatures usually reach 33°C in Semarang in September with very high heat and humidity, falling to 23°C at night.

How sunny is it in Semarang in September?

There are normally 9 hours of bright sunshine each day in Semarang in September - that's 71% of daylight hours.

How warm is the sea around Semarang in September?

The average sea temperature around Semarang in September is 29°C.

Does it rain in Semarang in September?

There are usually 8 days with some rain in Semarang in September and the average monthly rainfall is 93mm.

Semarang September sunrise & sunset times

Browse the sunrise and sunset times for Semarang in September 2026. Select a month to view Semarang sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:39 17:38
Tuesday, 15th September 2026 05:32 17:35
Wednesday, 30th September 2026 05:24 17:33

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^