BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Friday 20 March 2026 At 0600 UTC
Part I : Warning
NIL
Part II : General Synopsis
Thursday 19 March 2026 at 12 UTC NORTHERLY TO NORTHEASTERLY LIGHT TO MODERATE FLOW IN THE NORTHERN PART OF INDONESIA SOUTHWESTERLY TO NORTHWESTERLY GENTLE TO FRESH FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Saturday 21 March 2026 at 06 UTC
MALACCA STRAIT
Northerly
5-7 kt
Smooth Sea
INDIAN OCEAN WESTERN OF ACEH
Northerly
2-11 kt
Moderate Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Northerly
0-8 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF JAVA
Easterly
1-10 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF BALI
Southwesterly
5-9 kt
Moderate Sea
NORTH NATUNA SEA
Northeasterly
8-13 kt
Slight Sea
KARIMATA STRAIT
Northerly
7-12 kt
Slight Sea
JAVA SEA
Westerly
4-14 kt
Slight Sea
MAKASSAR STRAIT
Northwesterly
5-19 kt
Slight Sea
BALI SEA
Northwesterly
1-8 kt
Slight Sea
SUMBAWA SEA
Northwesterly
3-12 kt
Slight Sea
FLORES SEA
Westerly
2-15 kt
Slight Sea
BANDA SEA
Northwesterly
1-19 kt
Slight Sea
CERAM SEA
Northwesterly
3-17 kt
Moderate Sea
SULAWESI SEA
Northerly
1-16 kt
Moderate Sea
MOLLUCA SEA
Northerly
2-17 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Northerly
8-16 kt
Moderate Sea
ARAFURA SEA
Westerly
15-24 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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