BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Saturday 02 August 2025 At 0600 UTC
Part I : Warning
NIL
Part II : General Synopsis
Friday 01 August 2025 at 12 UTC SOUTHEASTERLY TO SOUTHWESTERLY GENTLE TO MODERATE FLOW IN THE NORTHERN PART OF INDONESIA SOUTHEASTERLY TO SOUTHWESTERLY GENTLE TO STRONG FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Sunday 03 August 2025 at 06 UTC
MALACCA STRAIT
Westerly
2-25 kt
Moderate Sea
INDIAN OCEAN WESTERN OF ACEH
Westerly
7-26 kt
Rough Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Easterly
3-27 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF JAVA
Easterly
9-22 kt
Rough Sea
INDIAN OCEAN SOUTHERN OF BALI
Easterly
7-18 kt
Moderate Sea
NORTH NATUNA SEA
Northwesterly
0-17 kt
Slight Sea
KARIMATA STRAIT
Easterly
1-25 kt
Slight Sea
JAVA SEA
Southeasterly
11-20 kt
Moderate Sea
MAKASSAR STRAIT
Easterly
3-23 kt
Moderate Sea
BALI SEA
Easterly
3-15 kt
Slight Sea
SUMBAWA SEA
Easterly
7-19 kt
Moderate Sea
FLORES SEA
Easterly
10-23 kt
Moderate Sea
BANDA SEA
Southeasterly
4-25 kt
Moderate Sea
CERAM SEA
Southeasterly
0-22 kt
Moderate Sea
SULAWESI SEA
Easterly
1-17 kt
Slight Sea
MOLLUCA SEA
Northeasterly
0-19 kt
Slight Sea
WESTERN PART OF PACIFIC OCEAN
Easterly
5-23 kt
Slight Sea
ARAFURA SEA
Southeasterly
12-25 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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