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Weekly Weather Forecast: Jakarta Shifts from Heat to Rain, Surabaya Stays Scorching
Over the coming week, Jakarta will start with extreme heat before a 50% chance of rain dominates through the weekend. Surabaya is expected to remain extremely hot, with a low chance of rain, while Denpasar will be mostly sunny, with two periods of increased rain chances on Saturday and Monday-Tuesday.
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Tomorrow, Wednesday, October 21: Extreme Heat in Jakarta and Surabaya
Tomorrow, Wednesday, October 21, 2026, temperatures in Jakarta are forecast to range from 27–35°C and in Surabaya from 26–37°C, with both cities in the extreme heat category. Denpasar is forecast to be sunny, with temperatures of 24–34°C.
Strong sunshine expected to push Surabaya temperatures to 37°C
From October 20 to October 27, strong sunshine and warm air are forecast to raise temperatures in Indonesia, with Surabaya reaching 37°C and Denpasar 35°C. Take steps to manage the heat, such as limiting daytime outdoor activity and drinking water regularly.
Today’s Weather: Surabaya 37°C; Jakarta Air Heavily Polluted at 6:00 a.m.
Jakarta will be sunny today, with temperatures of 27–34°C, but air quality at 6:00 a.m. is very poor. Surabaya will reach 37°C in extreme heat, while Denpasar will reach 35°C with good air quality.
Weekly Forecast: Extreme Heat Spreads, Rain Possible in Jakarta
Jakarta is forecast to shift from extreme heat early in the week to an increasing chance of rain, peaking at 70% on Saturday (24/10). Surabaya is expected to remain extremely hot all week, while Denpasar is forecast to become progressively sunnier as maximum temperatures fall from 35°C to 32°C.
Tomorrow’s Weather, October 20: Extreme Heat in Jakarta, Surabaya and Denpasar
Tomorrow, Tuesday, October 20, 2026, Jakarta is forecast to see extreme heat, with a high of 35°C. Surabaya is forecast to reach 37°C and Denpasar 35°C. The chance of rain in all three cities is just 10%.
Strong sunshine forecast to push temperatures to 37°C in Indonesia’s Surabaya
From October 19 to October 26, strong sunshine and warm air are forecast to drive temperatures higher in Indonesia, with temperatures reaching 37°C in Surabaya and 35°C in Jakarta, among three cities. Take steps to protect yourself from the heat, such as limiting time outdoors during the day and drinking water regularly.