BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Tuesday 13 January 2026 At 0600 UTC
Part I : Warning
LOW PRESSURE AREA 91W AT 4.0°N 138.7°E 1006HPA MAXIMUM WINDS 15 KT MOVING TO NW
Part II : General Synopsis
Monday 12 January 2026 at 12 UTC NORTHWESTERLY TO NORTHEASTERLY GENTLE TO STRONG FLOW IN THE NORTHERN PART OF INDONESIA SOUTHWESTERLY TO NORTHWESTERLY GENTLE TO STRONG FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Wednesday 14 January 2026 at 06 UTC
MALACCA STRAIT
Northwesterly
5-8 kt
Slight Sea
INDIAN OCEAN WESTERN OF ACEH
Northerly
7-14 kt
Moderate Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Westerly
8-16 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF JAVA
Westerly
8-16 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF BALI
Northwesterly
4-24 kt
Moderate Sea
NORTH NATUNA SEA
Northeasterly
13-20 kt
Moderate Sea
KARIMATA STRAIT
Northerly
12-18 kt
Moderate Sea
JAVA SEA
Westerly
7-26 kt
Moderate Sea
MAKASSAR STRAIT
Northwesterly
8-24 kt
Moderate Sea
BALI SEA
Westerly
10-25 kt
Moderate Sea
SUMBAWA SEA
Northwesterly
18-25 kt
Moderate Sea
FLORES SEA
Westerly
8-23 kt
Moderate Sea
BANDA SEA
Westerly
2-22 kt
Moderate Sea
CERAM SEA
Westerly
3-16 kt
Moderate Sea
SULAWESI SEA
Westerly
6-14 kt
Moderate Sea
MOLLUCA SEA
Northwesterly
2-18 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Westerly
1-24 kt
Moderate Sea
ARAFURA SEA
Westerly
13-24 kt
Rough Sea
⚠️ Important Notes
Please be aware, wind gusts can be a further 40 percent stronger than the averages given here, and maximum waves may be up to twice the significant height
Reference Scales
Beaufort Wind Scale
| Force | Description | Speed (knots) |
|---|---|---|
| 0 | Calm | < 1 |
| 1 | Light air | 1-3 |
| 2 | Light breeze | 4-6 |
| 3 | Gentle breeze | 7-10 |
| 4 | Moderate breeze | 11-16 |
| 5 | Fresh breeze | 17-21 |
| 6 | Strong breeze | 22-27 |
| 7 | Near gale | 28-33 |
| 8 | Gale | 34-40 |
| 9 | Strong gale | 41-47 |
Douglas Sea Scale
| Grade | Description | Height (m) |
|---|---|---|
| 0 | Calm (Glassy) | 0 |
| 1 | Calm (Rippled) | 0-0.1 |
| 2 | Smooth | 0.1-0.5 |
| 3 | Slight | 0.5-1.25 |
| 4 | Moderate | 1.25-2.5 |
| 5 | Rough | 2.5-4 |
| 6 | Very rough | 4-6 |
| 7 | High | 6-9 |
| 8 | Very high | 9-14 |
| 9 | Phenomenal | >14 |
KONTAK KAMI :
Jl. Angkasa I No.2 Kemayoran, Jakarta Pusat 10610, PO Box 3540 Jkt.
Call Center (021) 196
Fax (021) 4246703
cc196@bmkg.go.id
TAUTAN :
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