Jakarta Temperature Market Guide

WIHH • Soekarno-Hatta International Airport

Polymarket

Jakarta, Indonesia's massive capital, offers a tropical monsoon climate just south of the equator. The city experiences consistently hot, humid conditions year-round with distinct wet and dry seasons.

Quick Facts

Station Code	`WIHH`
Location	Jakarta, Indonesia
Coordinates	6.1256°S, 106.6558°E
Elevation	34 ft (10 m)
Timezone	WIB (Asia/Jakarta)
NWS Office	BMKG Indonesia

About Jakarta Weather Station

Soekarno-Hatta International Airport (WIII) serves as the primary weather observation station for the Jakarta metropolitan area. Located about 20 kilometers northwest of central Jakarta, the airport sits at 34 feet (10 meters) elevation on the coastal plain.

Jakarta's position near the equator and on the Java Sea coast creates hot, humid conditions year-round. BMKG (Indonesian Meteorological Agency) maintains official observations.

Climate Patterns

Jakarta has a tropical monsoon climate (Koppen: Am) with hot, humid conditions throughout the year. The wet season brings heavy rainfall while the dry season is somewhat drier but still humid.

Daily highs consistently reach 32-34�C (90-93�F) year-round. Nights are warm, typically 24-26�C (75-79�F).

The wet season (November-April) brings heavy afternoon thunderstorms and potential flooding.

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Seasonal Trading Considerations

Wet Season (November - April): Heavy rainfall with highs 32-33�C (90-91�F). Afternoon thunderstorms common. Flooding risk during peak months.

Transition (May): Decreasing rainfall as dry season approaches.

Dry Season (June - September): Less rainfall with highs 33-34�C (91-93�F). Still humid but more consistent conditions.

Transition (October): Increasing rainfall as wet season approaches.

Trading Tips for Jakarta

Jakarta's equatorial location creates remarkably stable temperatures - daily highs rarely deviate more than 2-3�C throughout the year.

The wet season can slightly suppress maximum temperatures due to increased cloud cover and rain.

Urban heat island effects are significant in this megacity of over 30 million people.

The main forecasting challenge is predicting variations within a narrow temperature range.

Data Release Schedule

Typical release times for key data products at WIHH. Times shown in UTC.

Data Type	Typical Time (UTC)	Variability
METAR Hourly observations	Hourly at :53	±1 min

6-Hour High/Low Reports

These METARs include 6-hour maximum and minimum temperatures, useful for tracking intraday temperature trends.

00:53 UTC

06:53 UTC

12:53 UTC

18:53 UTC

Note: Times are approximate and may vary. CLI reports are the official resolution source for temperature markets. See NWS Data Guide for more information.

Forecasting Challenges

Narrow Temperature Range: Minimal annual variation makes small differences significant.

Afternoon Convection: Thunderstorm timing affects daily maximum temperatures.

Urban Heat Island: Temperature differences between the airport and dense urban areas.