Central Java Weather Today, 15 September 2026: Pantura Temperatures Hit 36 Degrees, High Waves Warned
The Meteorology, Climatology and Geophysics Agency (BMKG) has issued its weather forecast for Central Java for Tuesday (15/9/2026). Residents are being asked to remain alert to a surge in air temperatures reaching 36 degrees Celsius in the Pantura (northern coastal) region, as well as the potential for high waves in the waters to the north and south of the province.
Arif N, a forecaster at the BMKG Ahmad Yani Meteorological Station in Semarang, stated that conditions across Central Java will generally be cloudy from morning until early evening. However, the absence of any chance of rain across the entire region, including mountainous areas, increases the risk of forest and land fires (karhutla).
“There are no signs of rain throughout the day, so the public is urged to be vigilant about forest and land fires, as many dry plants can easily catch fire if sparked,” Arif said in his statement on Tuesday (15 September).
Although skies will tend to be cloudy, air temperatures in a number of districts along Central Java’s northern coast are expected to feel particularly intense. Areas such as Grobogan, Blora, Rembang, Pati, Jepara, Demak, Semarang, Kendal and Batang could record maximum temperatures of up to 36 degrees Celsius.
On the maritime front, Sediyanto, a forecaster at the BMKG Tanjung Emas Maritime Station in Semarang, reported that although coastal tidal flooding (rob) is beginning to subside with a maximum height of 0.7 metres, the risk of high waves continues to threaten shipping activity.
Waves in the waters south of Central Java (from Cilacap to Purworejo) are estimated to reach 2.5 to 4 metres. Meanwhile, in the northern waters, covering the areas of Pekalongan, Kendal, Semarang, Demak, Jepara, Karimunjawa and Pati-Rembang, wave heights are forecast to range between 1.25 and 2.5 metres.
Fair and cloudy conditions over the waters do not guarantee full safety for shipping, as wind conditions and wave heights remain in the risky category for small and medium-sized vessels.