Ha Long Bay - Mirror Lake - Vietnam
Perfectly calm water for flawless reflections
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
What this forecast looks for
Plain-language explanation from the ruleThis forecast tracks conditions for reflection photography across Vietnam's diverse water features, from the emerald waters of Ha Long Bay to flooded rice terraces cascading down mountain slopes. We analyze wind speed, cloud cover, water levels, and seasonal agricultural patterns to predict when mirror-like surfaces create symmetrical compositions.
Vietnam offers exceptional reflection opportunities year-round, but they vary dramatically by season and location. Ha Long Bay and Ninh Binh provide reflections of limestone karsts in emerald and jade-green waters. Rice terraces at Sapa and Mu Cang Chai become reflective during planting season (May-June) when paddies are flooded. Ancient towns like Hoi An create lantern reflections in the Thu Bon River.
What makes Vietnam reflection photography distinctive:
- Karst water reflections - Ha Long Bay's limestone islands and Ninh Binh's Tam Coc karsts create perfect natural symmetry in calm emerald waters
- Flooded rice terraces - Sapa and Mu Cang Chai terraces become giant mirrors during planting season, reflecting sky colors at dawn and dusk
- Ancient town waters - Hoi An's Thu Bon River doubles the visual impact of yellow buildings and colorful lanterns during evening hours
- Imperial reflections - Hue's Perfume River mirrors royal tombs, pagodas, and the historic citadel under calm conditions
Ha Long Bay requires calm conditions—early morning (before 9 AM) or late afternoon typically offer the best chance before tourist boats disturb waters. December through February dry season provides calmest conditions. Ninh Binh's Tam Coc area works similarly, with boat-free early morning hours (6-8 AM) essential for undisturbed reflections among the karsts. Rice terrace reflections at Sapa and Mu Cang Chai require precise timing—May and June during planting when fields are flooded but crops haven't grown. Hoi An's river reflections work best from 5-8 PM during blue hour when lanterns are lit but water remains calm.
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72-hour requirements breakdown
What passed or failed, hour by hourTime Asia/Bangkok | Wind Speed ≤ 1.0m/s | Wind Gusts ≤ 2.0m/s | Precipitation Chance ≤ 10.0% | Visibility ≥ 5000.0m |
|---|---|---|---|---|
| Wed, Apr 8 | ||||
| 08:00 | 3m/s | 6.2m/s | 0% | 24135m |
| 09:00 | 3.3m/s | 6.8m/s | 0% | 24134m |
| 10:00 | 3.6m/s | 7.3m/s | 0% | 24135m |
| 11:00 | 3.5m/s | 7.2m/s | 0% | 24134m |
| 12:00 | 3.7m/s | 6.9m/s | 0% | 24134m |
| 13:00 | 3.8m/s | 7.1m/s | 0% | 24135m |
| 14:00 | 3.4m/s | 6.3m/s | 0% | 19784m |
| 15:00 | 3m/s | 5.8m/s | 0% | 24134m |
| 16:00 | 3.5m/s | 6.2m/s | 0% | 24135m |
| 17:00 | 3.4m/s | 6.5m/s | 0% | 19260m |
| 18:00 | 3.2m/s | 8m/s | 0% | 24135m |
| 19:00 | 2.9m/s | 7.8m/s | 0% | 24134m |
| 20:00 | 2.7m/s | 7m/s | 0% | 24134m |
| 21:00 | 2m/s | 5.2m/s | 0% | 24134m |
| 22:00 | 0.99m/s | 1.1m/s | 0% | 24135m |
| 23:00 | 1.6m/s | 2.1m/s | 0% | 24135m |
| Thu, Apr 9 | ||||
| 24:00 | 1.5m/s | 1.9m/s | 0% | 24134m |
| 01:00 | 1.1m/s | 1.2m/s | 0% | 24135m |
| 02:00 | 2.1m/s | 8.2m/s | 0% | 24135m |
| 03:00 | 2m/s | 7.7m/s | 0% | 24134m |
| 04:00 | 2.8m/s | 6.7m/s | 0% | 24134m |
| 05:00 | 2.3m/s | 5.2m/s | 0% | 24135m |
| 06:00 | 1.3m/s | 1.8m/s | 0% | 24135m |
| 07:00 | 1.7m/s | 5.8m/s | 0% | 24135m |
| 08:00 | 2.1m/s | 5.6m/s | 0% | 24134m |
| 09:00 | 2.6m/s | 5.3m/s | 0% | 24135m |
| 10:00 | 3.3m/s | 5.6m/s | 0% | 18530m |
| 11:00 | 4m/s | 6.2m/s | 0% | 18369m |
| 12:00 | 4.5m/s | 6.6m/s | 0% | 18441m |
| 13:00 | 4.2m/s | 6.1m/s | 0% | 19252m |
| 14:00 | 3.8m/s | 5.1m/s | 0% | 18498m |
| 15:00 | 3m/s | 4.3m/s | 0% | 18445m |
| 16:00 | 2.8m/s | 3.9m/s | 0% | 18775m |
| 17:00 | 3m/s | 4.5m/s | 0% | 18717m |
| 18:00 | 2m/s | 3.6m/s | 0% | 24135m |
| 19:00 | 2.1m/s | 3.3m/s | 0% | 24135m |
| 20:00 | 1.6m/s | 1.6m/s | 0% | 24135m |
| 21:00 | 0.81m/s | 0.91m/s | 0% | 24134m |
| 22:00 | 0.8m/s | 0.8m/s | 0% | 24135m |
| 23:00 | 0.66m/s | 0.71m/s | 0% | 24134m |
| Fri, Apr 10 | ||||
| 24:00 | 1.2m/s | 1.1m/s | 0% | 24134m |
| 01:00 | 1.4m/s | 1.7m/s | 0% | 24135m |
| 02:00 | 1.8m/s | 3.4m/s | 0% | 24135m |
| 03:00 | 1.7m/s | 2.6m/s | 0% | 24134m |
| 04:00 | 1.7m/s | 3.3m/s | 0% | 24134m |
| 05:00 | 1.6m/s | 2.1m/s | 0% | 24135m |
| 06:00 | 1.6m/s | 2m/s | 0% | 24134m |
| 07:00 | 1.1m/s | 4.8m/s | 0% | 24135m |
| 08:00 | 1.9m/s | 4.8m/s | 0% | 24134m |
| 09:00 | 2.8m/s | 5.5m/s | 0% | 24134m |
| 10:00 | 3.5m/s | 5.3m/s | 0% | 18485m |
| 11:00 | 3.9m/s | 5.2m/s | 0% | 18440m |
| 12:00 | 4.1m/s | 5.3m/s | 0% | 18434m |
| 13:00 | 3.8m/s | 4.9m/s | 0% | 18415m |
| 14:00 | 3.3m/s | 3.8m/s | 0% | 18483m |
| 15:00 | 3.1m/s | 3.2m/s | 0% | 24134m |
| 16:00 | 3.2m/s | 3.8m/s | 0% | 18718m |
| 17:00 | 3.1m/s | 4.5m/s | 0% | 18980m |
| 18:00 | 2.3m/s | 4.1m/s | 0% | 24134m |
| 19:00 | 2m/s | 3.4m/s | 0% | 24134m |
| 20:00 | 1.9m/s | 2.4m/s | 0% | 24134m |
| 21:00 | 1.6m/s | 1.6m/s | 0% | 24134m |
| 22:00 | 1.4m/s | 1.4m/s | 0% | 24134m |
| 23:00 | 1m/s | 1m/s | 0% | 24134m |
| Sat, Apr 11 | ||||
| 24:00 | 1.6m/s | 2.7m/s | 0% | 24135m |
| 01:00 | 2.4m/s | 6.8m/s | 0% | 24135m |
| 02:00 | 2.6m/s | 6.2m/s | 0% | 24135m |
| 03:00 | 2.4m/s | 5.8m/s | 0% | 24134m |
| 04:00 | 2.1m/s | 4.3m/s | 0% | 24135m |
| 05:00 | 2.2m/s | 4.5m/s | 0% | 24134m |
| 06:00 | 1.8m/s | 3.4m/s | 0% | 24135m |
| 07:00 | 1.7m/s | 4.9m/s | 0% | 24134m |
| 08:00 | 2m/s | 4.6m/s | 0% | 24134m |
| 09:00 | 2.4m/s | 4.9m/s | 0% | 24134m |
| 10:00 | 3.1m/s | 5.4m/s | 0% | 18537m |
| 11:00 | 3.8m/s | 5.5m/s | 0% | 18362m |
| 12:00 | 3.9m/s | 5.2m/s | 0% | 18386m |
| 13:00 | 4.1m/s | 5.1m/s | 0% | 18373m |
| 14:00 | 3.3m/s | 4.9m/s | 0% | 20294m |
| 15:00 | 2.5m/s | 4.7m/s | 0% | 22214m |
| 16:00 | 1.8m/s | 4.5m/s | 0% | 24135m |
| 17:00 | 2.1m/s | 6.3m/s | 0% | 24135m |
| 18:00 | 2.4m/s | 8m/s | 0% | 24135m |
| 19:00 | 2.7m/s | 9.7m/s | 0% | 24135m |
| 20:00 | 2.6m/s | 8.1m/s | 0% | 24135m |
| 21:00 | 2.4m/s | 6.4m/s | 0% | 24135m |
| 22:00 | 2.3m/s | 4.7m/s | 0% | 24135m |
| 23:00 | 2.2m/s | 5.5m/s | 0% | 24135m |
| Sun, Apr 12 | ||||
| 24:00 | 2.2m/s | 6.2m/s | 0% | 24135m |
| 01:00 | 2.1m/s | 6.9m/s | 0% | 24135m |
| 02:00 | 2.4m/s | 6.4m/s | 0% | 24135m |
| 03:00 | 2.7m/s | 6m/s | 0% | 24135m |
| 04:00 | 3m/s | 5.5m/s | 0% | 24135m |
| 05:00 | 3.2m/s | 5.3m/s | 0% | 22256m |
| 06:00 | 3.4m/s | 5m/s | 0% | 20376m |
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