About This Outlook
As part of our ongoing commitment to protect mariners' lives and help in times of crisis, Weathernews will be providing daily snapshots of critical port weather trends in the Indian Ocean.
Explore this week’s operational weather risks in our [Weekly Outlook].
Reports are updated four times daily and include 48-hour, 5-day and 7-day outlooks for your use.
Daily Port Weather Highlights
This snapshot is based on the 48-hour forecast issued August 21, 2026, at 00:00 UTC.
Port Forecast Alert Threshold
■ ASH SHIHR, Yemen
Winds, gusts, and waves all build sharply toward midday on August 21, peaking around 15:00 LT. Wind and gusts reach Yellow Caution levels, while waves briefly touch Red Warning before conditions ease significantly for the remainder of the day.
Wind: Winds stay light and variable through the morning, dropping to a low of 2 kts at 08:00 LT, before building sharply to exceed the 20 kts Yellow Caution threshold at 14:00 LT and peaking at 28 kts at 15:00 LT. Conditions ease rapidly, dropping below Yellow Caution by 19:00 LT.
Gust: Gusts dip to a low of 3 kts at 08:00 LT before building sharply, breaching the 30 kts Yellow Caution threshold at 14:00 LT and surging to a peak of 42 kts at 15:00 LT. Gusts ease quickly, dropping below the Yellow Caution threshold by 19:00 LT.
Wave: Significant wave height holds near 1.4 m from 05:00–09:00 LT before rising steadily, breaching the 2.5 m Yellow Caution threshold at 14:00 LT and briefly touching the 3.5 m Red Warning threshold at 15:00 LT. Heights ease back below Red Warning by 16:00 LT and below Yellow Caution by 20:00 LT.
■ KARACHI, Pakistan
Wind: Winds ease from 16 kts at 05:00 LT to a low of 15 kts at 07:00–10:00 LT before gradually climbing to a peak of 19 kts at 16:00–17:00 LT and easing back to 17 kts by 20:00–23:00 LT.
Gust: Gusts dip from 24 kts at 05:00 LT to a low of 23 kts at 07:00–10:00 LT before building steadily to a peak of 28 kts at 16:00–17:00 LT and settling at 26 kts by 20:00–23:00 LT.
Wave: Significant wave height holds steady at 2.9 m — already above the 2.5 m Yellow Caution threshold — from 05:00–12:00 LT, before edging up to a peak of 3.1 m at 16:00–18:00 LT and settling back to 3.0 m through 23:00 LT.
■ HAMBANTOTA, Sri Lanka
Wind and gusts build to a brief midday peak on August 21, exceeding Yellow Caution thresholds between 11:00–15:00 LT before easing back to calmer levels. Waves remain above Yellow Caution for most of the day, easing below threshold only in the evening.
Wind: Winds start at 13 kts at 05:00 LT and build steadily, exceeding the 20 kts Yellow Caution threshold at 11:00 LT and peaking at 21 kts at 14:00 LT. Conditions ease back below Yellow Caution by 16:00 LT and settle to 14 kts by 23:00 LT.
Gust: Gusts climb from 19 kts at 05:00 LT, breaching the 30 kts Yellow Caution threshold at 11:00 LT and peaking at 31 kts at 14:00 LT before easing back below threshold by 16:00 LT and settling at 20 kts through 22:00–23:00 LT.
Wave: Significant wave height opens at 2.7 m at 05:00 LT — already above the 2.5 m Yellow Caution threshold — and builds to a peak of 3.1 m at 14:00 LT before gradually declining, dropping below the Yellow Caution threshold at 20:00 LT and settling at 2.4 m through 23:00 LT.
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Major Ports with Published Port Forecasts
Arabian Sea Coast Region
- India: Mumbai Port, Nhava Sheva (Jawaharlal Nehru Port)
- Pakistan: Karachi Port, Gwadar, Muhammad Bin Qasim
- Qatar: Doha Port, Ras Laffan Port
- Oman: Salalah, Duqm
- Yemen: Aden
In addition, approximately 150 locations are covered, including ports in the Persian Gulf and the Red Sea.
