BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Tuesday 01 September 2026 At 0000 UTC
Part I : Warning
TD SAUDEL AT 19.2LU 112.0BT 998HPA MAXIMUM WINDS 35KNOT MOVING TO EAST - NORTHEAST
Part II : General Synopsis
Monday 31 August 2026 at 12 UTC SOUTHEASTERLY TO SOUTHWESTERLY GENTLE TO STRONG FLOW IN THE NORTHERN PART OF INDONESIA EASTERLY TO SOUTHEASTERLY MODERATE TO STRONG FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Wednesday 02 September 2026 at 00 UTC
MALACCA STRAIT
Easterly
6-10 kt
Slight Sea
INDIAN OCEAN WESTERN OF ACEH
Northwesterly
5-16 kt
Moderate Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Southeasterly
15-18 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF JAVA
Southeasterly
15-18 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF BALI
Easterly
11-18 kt
Moderate Sea
NORTH NATUNA SEA
Southwesterly
10-18 kt
Moderate Sea
KARIMATA STRAIT
Northeasterly
9-18 kt
Slight Sea
JAVA SEA
Southeasterly
14-20 kt
Moderate Sea
MAKASSAR STRAIT
Easterly
9-22 kt
Moderate Sea
BALI SEA
Easterly
6-17 kt
Moderate Sea
SUMBAWA SEA
Easterly
3-18 kt
Moderate Sea
FLORES SEA
Easterly
6-18 kt
Moderate Sea
BANDA SEA
Southeasterly
5-21 kt
Moderate Sea
CERAM SEA
Easterly
2-21 kt
Moderate Sea
SULAWESI SEA
Easterly
4-18 kt
Moderate Sea
MOLLUCA SEA
Westerly
4-22 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Westerly
1-10 kt
Slight Sea
ARAFURA SEA
Southeasterly
9-19 kt
Moderate 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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