Tomorrow, Wednesday, October 21: Extreme Heat in Jakarta and Surabaya

Jakarta: Extreme heat, with temperatures reaching 35°C

For Wednesday, October 21, 2026, Jakarta’s daily forecast puts the city in the extreme heat category, with a minimum temperature of 27°C and a maximum of 35°C. Daily relative humidity is forecast at 49%, with a 10% chance of rain and 0 mm of rainfall. At 6 a.m. WIB, the temperature is forecast to be 27°C with sunny conditions. At 9 a.m., it is forecast to reach 32°C, rising to 35°C at noon in the extreme heat category. At 3 p.m., the temperature is forecast to be 33°C with sunny conditions, while at 9 p.m. it is forecast to be 29°C. The chance of rain at all these times is 0%.

Surabaya: Temperatures reach 37°C at noon

Surabaya’s daily forecast for Wednesday, October 21, 2026, is also in the extreme heat category, with temperatures ranging from 26°C to 37°C. Daily relative humidity is forecast at 40%, with a 10% chance of rain and 0 mm of rainfall. At 6 a.m. WIB, the temperature is forecast to be 26°C with sunny conditions. At 9 a.m., it is forecast to reach 34°C in the extreme heat category, rising to 37°C at noon in the same category. At 3 p.m., the temperature is forecast to be 36°C with sunny conditions, while at 6 p.m. it is forecast to be 31°C. The chance of rain at these times is 0%.

Denpasar: Sunny, with temperatures of 24–34°C

Denpasar is forecast to be sunny on Wednesday, October 21, 2026, with a minimum temperature of 24°C and a maximum of 34°C. Daily relative humidity is forecast at 62%, with a 10% chance of rain and 0 mm of rainfall. At 6 a.m. WITA, the temperature is forecast to be 24°C, with 88% humidity and sunny conditions. At noon, the temperature is forecast to be 34°C with sunny conditions and a 0% chance of rain. At 6 p.m., the temperature is forecast to be 28°C, with 75% humidity. At 9 p.m., the temperature is forecast to be 25°C, with sunny conditions, 85% humidity and a 0% chance of rain.