In Indonesia you have several regions, one of which is called East Java. The most popular city in this region is Surabaya, whose climate data we'll examine to provide you with an overview of what weather to expect in East Java. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In East Java, particularly in Surabaya, temperatures are consistently high throughout the year, with average maximum temperatures always above 32°C (90°F).
Note that the warmest month in East Java is normally October, with the temperature reaching 35°C (95°F), while August has the coolest maximum daytime temperatures, reaching 32°C (90°F).
The peak heat season generally takes place in September, October and November.
Precipitation in East Java varies considerably throughout the year. The wettest conditions occur in February with 303 mm (12 in) of rain, while August stays relatively dry with 8 mm (0.3 in). The region experiences its rainy season during January, February, March, April and December, when monthly rainfall can range from 196 mm (7.7 in) to 303 mm (12 in). August marks the driest time of year, with rainfall falling below 8 mm (0.3 in).
Visitors hoping to maximize their time in the sun should consider planning their trip for August, when daylight hours are at their peak.
