Rain may still fall across 19 Indonesian regions on Monday, including DKI Jakarta, even as low rainfall is expected to dominate much of the country. The forecast highlights that local atmospheric conditions can still produce rain clouds in several areas.
Residents in the listed regions may need to watch for weather updates, particularly in areas also facing a risk of strong winds. BMKG identified several weather drivers that could sustain rain potential during the period.
National Rainfall Outlook Remains Mostly Low
BMKG forecasts low rainfall for 76.54 percent of Indonesia during the third ten-day period of July. Another 23.36 percent of the country is expected to receive medium rainfall, while only 0.09 percent is forecast to receive high rainfall.
Wind bends, convergence zones, and relatively warm sea-surface temperatures may still support cloud development in some regions. These conditions explain why rain remains possible despite the broader dry outlook.
Areas Also Facing Strong-Wind Potential
West Nusa Tenggara, North Sulawesi, and South Sulawesi are included in both the rain-potential list and the strong-wind warning. BMKG also listed Banten, Maluku, and East Nusa Tenggara among areas that may experience strong winds.
Weather conditions can change, and the agency advised the public to follow updated forecasts. The rain outlook covers parts of Sumatra, Java, Bali, Nusa Tenggara, Kalimantan, and Sulawesi.
19 Regions with Rain Potential
| No. | Region | Forecast |
|---|---|---|
| 1 | Aceh | Rain possible |
| 2 | West Sumatra | Rain possible |
| 3 | North Sumatra | Rain possible |
| 4 | Riau | Rain possible |
| 5 | Riau Islands | Rain possible |
| 6 | South Sumatra | Rain possible |
| 7 | Bengkulu | Rain possible |
| 8 | DKI Jakarta | Rain possible |
| 9 | West Java | Rain possible |
| 10 | Bali | Rain possible |
| 11 | West Nusa Tenggara | Rain possible |
| 12 | West Kalimantan | Rain possible |
| 13 | Central Kalimantan | Rain possible |
| 14 | East Kalimantan | Rain possible |
| 15 | North Kalimantan | Rain possible |
| 16 | North Sulawesi | Rain possible |
| 17 | Central Sulawesi | Rain possible |
| 18 | South Sulawesi | Rain possible |
| 19 | Southeast Sulawesi | Rain possible |
Regional Details
1. Aceh
Aceh is among the regions forecast to have rain potential on Monday. Local residents can monitor updated BMKG weather information.
2. West Sumatra
West Sumatra is included in the rain-potential forecast. The outlook comes as low rainfall remains dominant across many parts of Indonesia.
3. North Sumatra
North Sumatra is also expected to have a chance of rain. It forms part of the wider distribution of wetter areas identified by BMKG.
4. Riau
Riau may receive rain on Monday. Madden-Julian Oscillation activity is forecast to be active over the region.
5. Riau Islands
The Riau Islands are also on the list of regions with rain potential. MJO activity is expected to affect this area as well.
6. South Sumatra
South Sumatra is among the regions where rain may occur. It is included in Monday’s projected wet-weather distribution.
7. Bengkulu
Bengkulu is listed among the 19 regions with possible rain. Residents may need to follow local forecast changes.
8. DKI Jakarta
DKI Jakarta is among the areas that should prepare for possible rain. The Greater Jakarta area is within the forecast coverage.
9. West Java
West Java is included in the rain-potential list. Much of Java is still generally forecast to receive low rainfall.
10. Bali
Bali may also experience rain on Monday. The island is generally expected to be in the low-rainfall category during the third ten-day period of July.
11. West Nusa Tenggara
West Nusa Tenggara is forecast to have rain potential. The region should also be alert to possible strong winds.
12. West Kalimantan
West Kalimantan may receive rain. Active MJO conditions could support rain-cloud formation in the region.
13. Central Kalimantan
Central Kalimantan is included in the forecast for possible rain. It is part of the projected rain distribution across Kalimantan.
14. East Kalimantan
East Kalimantan may experience rain on Monday. MJO activity, Kelvin waves, and Equatorial Rossby waves are forecast to be active there.
15. North Kalimantan
North Kalimantan is also forecast to have rain potential. Its atmospheric conditions may be influenced by MJO, Kelvin waves, and Equatorial Rossby waves.
16. North Sulawesi
North Sulawesi is on the rain-potential list. The area also faces possible strong winds.
17. Central Sulawesi
Central Sulawesi may have a chance of rain. Kelvin waves and Equatorial Rossby waves are forecast to be active in the area.
18. South Sulawesi
South Sulawesi is among the regions with possible rain. It is also included in BMKG’s strong-wind outlook.
19. Southeast Sulawesi
Southeast Sulawesi completes the list of 19 regions with rain potential. The possibility remains relevant even under the generally low national rainfall forecast.
People in affected areas are advised to monitor the latest BMKG Weather Forecast as local conditions may develop differently across regions.