What conditions does Golden Hour look for?

Golden Hour: Any. Golden Hour Potential: ≥ 80.0%. Precipitation Chance: ≤ 5.0%. Visibility: ≥ 1000.0m

How often do conditions match?

There are 7 upcoming opportunity windows in the next 10 days.

More Golden Hour in Vietnam

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Rule Golden Hour

Ha Long Bay - Golden Hour - Vietnam

Ha Long, Quảng Ninh, Vietnam

That magical warm light just after sunrise or before sunset

Currently

Real-time conditions

Golden Hour Potential

17%

Low Cloud Cover1%

Mid Cloud Cover0%

High Cloud Cover0%

Sun Elevation46.1° (Daylight)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Bangkok

Next opportunity

Exceptional Golden Hour at Sunset

Ha Long Bay

Today · 17:39–18:22 · 1h window

Medium confidence

64%

🌇Golden Hour Potential100%

Low Cloud Cover: 15%

Mid Cloud Cover: 0%

High Cloud Cover: 0%

Sun Elevation: 15.2° (Daylight)

Exceptional Golden Hour (calm) at Sunrise

Ha Long Bay

Tomorrow · 05:23–06:06

🌇Golden Hour Potential:96.7-97.4%

Medium

Exceptional Golden Hour at Sunset

Ha Long Bay

Tomorrow · 17:40–18:23

🌇Golden Hour Potential:100%

Medium

Exceptional Golden Hour at Sunrise

Ha Long Bay

Sat, Apr 11 · 05:22–06:05

🌇Golden Hour Potential:88.8%

Medium

Exceptional Golden Hour at Sunrise

Ha Long Bay

Sun, Apr 12 · 05:21–06:04

🌇Golden Hour Potential:96.8-97%

Medium

Exceptional Golden Hour (calm) at Sunset

Ha Long Bay

Sun, Apr 12 · 17:40–18:00

🌇Golden Hour Potential:100%

Medium

Exceptional Golden Hour (calm) at Sunset

Ha Long Bay

Mon, Apr 13 · 17:40–18:00

🌇Golden Hour Potential:100%

Medium

What this forecast looks for

Plain-language explanation from the rule

This forecast identifies optimal golden hour conditions for Vietnam's diverse landscapes, from limestone karsts emerging from emerald waters to ancient trading ports lit by thousands of lanterns. We track cloud cover, visibility, and atmospheric conditions to predict when warm directional light enhances Vietnam's distinctive natural and cultural features.

Vietnam's geography—stretching over 1,000 miles from north to south—offers extraordinary variety. Northern limestone karsts at Ha Long Bay and Ninh Binh glow ethereally in early and late light, while central ancient towns like Hoi An come alive as sunset transitions to lantern-lit evening. Mountain landscapes at Sapa and Mu Cang Chai showcase terraced rice paddies that shift color dramatically through the seasons under golden light.

What makes Vietnam golden-hour photography distinctive:

Limestone karst magic - Ha Long Bay's 2,000 limestone islands and Ninh Binh's inland karsts appear to float when bathed in warm sunrise light
Rice terrace gradients - Sapa and Mu Cang Chai's cascading terraces glow golden during harvest season (September-October) or reflect sky colors when flooded (May-June)
Ancient town transitions - Hoi An's yellow buildings and lanterns create magical compositions as natural sunset light gives way to artificial illumination
Imperial architecture - Hue's citadel and royal tombs take on regal quality under warm directional light along the Perfume River

Ha Long Bay at sunrise provides Vietnam's iconic image—limestone karsts silhouetted against pastel skies with mirror-calm emerald waters, best December through February during dry season. Hoi An requires precise timing—arrive 30 minutes before sunset to capture yellow buildings in warm natural light, then stay as lanterns illuminate the Thu Bon River. Ninh Binh's karsts work magnificently at both sunrise and sunset, with flooded rice paddies providing reflections. At Sapa, golden hour during harvest season (late September-early October) transforms green terraces to gold.

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72-hour requirements breakdown

What passed or failed, hour by hour

14matching hours in the next 95 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Asia/Bangkok	Golden Hour Any	Golden Hour Potential ≥ 80.0%	Precipitation Chance ≤ 5.0%	Visibility ≥ 1000.0m
Wed, Apr 8
08:00	✕	18%	0%	24135m
09:00	✕	17%	0%	24134m
10:00	✕	16%	0%	24135m
11:00	✕	16%	0%	24134m
12:00	✕	16%	0%	24134m
13:00	✕	16%	0%	24135m
14:00	✕	16%	0%	19784m
15:00	✕	16%	0%	24134m
16:00	✕	17%	0%	24135m
17:00	✓	100%	0%	19260m
18:00	✓	97%	0%	24135m
19:00	✕	16%	0%	24134m
20:00	✕	16%	0%	24134m
21:00	✕	16%	0%	24134m
22:00	✕	16%	0%	24135m
23:00	✕	15%	0%	24135m
Thu, Apr 9
24:00	✕	17%	0%	24134m
01:00	✕	14%	0%	24135m
02:00	✕	12%	0%	24135m
03:00	✕	12%	0%	24134m
04:00	✕	12%	0%	24134m
05:00	✓	91%	0%	24135m
06:00	✓	100%	0%	24135m
07:00	✕	17%	0%	24135m
08:00	✕	16%	0%	24134m
09:00	✕	17%	0%	24135m
10:00	✕	16%	0%	18530m
11:00	✕	17%	0%	18369m
12:00	✕	16%	0%	18441m
13:00	✕	16%	0%	19252m
14:00	✕	16%	0%	18498m
15:00	✕	16%	0%	18445m
16:00	✕	17%	0%	18775m
17:00	✓	100%	0%	18717m
18:00	✓	100%	0%	24135m
19:00	✕	16%	0%	24135m
20:00	✕	16%	0%	24135m
21:00	✕	16%	0%	24134m
22:00	✕	16%	0%	24135m
23:00	✕	17%	0%	24134m
Fri, Apr 10
24:00	✕	17%	0%	24134m
01:00	✕	16%	0%	24135m
02:00	✕	16%	0%	24135m
03:00	✕	15%	0%	24134m
04:00	✕	16%	0%	24134m
05:00	✓	97%	0%	24135m
06:00	✓	97%	0%	24134m
07:00	✕	18%	0%	24135m
08:00	✕	18%	0%	24134m
09:00	✕	18%	0%	24134m
10:00	✕	17%	0%	18485m
11:00	✕	17%	0%	18440m
12:00	✕	16%	0%	18434m
13:00	✕	16%	0%	18415m
14:00	✕	16%	0%	18483m
15:00	✕	16%	0%	24134m
16:00	✕	17%	0%	18718m
17:00	✓	100%	0%	18980m
18:00	✓	100%	0%	24134m
19:00	✕	15%	0%	24134m
20:00	✕	16%	0%	24134m
21:00	✕	16%	0%	24134m
22:00	✕	16%	0%	24134m
23:00	✕	17%	0%	24134m
Sat, Apr 11
24:00	✕	12%	0%	24135m
01:00	✕	10%	0%	24135m
02:00	✕	10%	0%	24135m
03:00	✕	17%	0%	24134m
04:00	✕	16%	0%	24135m
05:00	✓	89%	0%	24134m
06:00	✓	89%	0%	24135m
07:00	✕	16%	0%	24134m
08:00	✕	16%	0%	24134m
09:00	✕	16%	0%	24134m
10:00	✕	17%	0%	18537m
11:00	✕	16%	0%	18362m
12:00	✕	16%	0%	18386m
13:00	✕	17%	0%	18373m
14:00	✕	18%	0%	20294m
15:00	✕	16%	0%	22214m
16:00	✕	12%	0%	24135m
17:00	✓	72%	0%	24135m
18:00	✓	73%	0%	24135m
19:00	✕	12%	0%	24135m
20:00	✕	15%	0%	24135m
21:00	✕	16%	0%	24135m
22:00	✕	17%	0%	24135m
23:00	✕	17%	0%	24135m
Sun, Apr 12
24:00	✕	17%	0%	24135m
01:00	✕	17%	0%	24135m
02:00	✕	17%	0%	24135m
03:00	✕	17%	0%	24135m
04:00	✕	16%	0%	24135m
05:00	✓	97%	0%	22256m
06:00	✓	97%	0%	20376m

How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Golden Hour Potential mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time Asia/Bangkok	Golden Hour	High Clouds %	Low Clouds %	Mid-Level Clouds %	Relative Humidity %	Total Cloud Coverage %	Wind Speed m/s
Thu, Apr 9 Sunrise 05:37 Sunset 18:08
09:00 ☾	-	0%	1%	0%	67%	1%	2.6m/s
10:00 ☾	-	0%	3%	0%	63%	3%	3.3m/s
11:00 ☾	-	0%	6%	0%	62%	6%	4m/s
12:00 ☾	-	0%	4%	0%	62%	4%	4.5m/s
13:00 ☾	-	0%	4%	0%	64%	4%	4.2m/s
14:00 ☾	-	0%	5%	0%	65%	5%	3.8m/s
15:00 ☾	-	0%	4%	0%	66%	4%	3m/s
16:00 ☾	-	0%	12%	0%	68%	12%	2.8m/s
17:00 ☾	-	0%	15%	0%	72%	15%	3m/s
18:00 ☾	-	0%	8%	5%	79%	12%	2m/s
19:00 ☾	-	0%	0%	5%	83%	5%	2.1m/s
20:00 ☾	-	0%	0%	5%	83%	5%	1.6m/s
21:00 ☾	-	0%	0%	4%	82%	4%	0.81m/s
22:00 ☾	-	0%	0%	3%	82%	3%	0.8m/s
23:00 ☾	-	0%	13%	4%	84%	13%	0.66m/s
Fri, Apr 10 Sunrise 05:37 Sunset 18:08
24:00 ☾	-	0%	32%	1%	88%	32%	1.2m/s
01:00 ☾	-	0%	38%	0%	92%	38%	1.4m/s
02:00 ☾	-	0%	36%	0%	93%	36%	1.8m/s
03:00 ☾	-	0%	48%	0%	94%	48%	1.7m/s
04:00 ☾	-	0%	35%	0%	94%	35%	1.7m/s
05:00 ☾	-	0%	36%	0%	96%	36%	1.6m/s
06:00 ☾	-	0%	38%	0%	95%	38%	1.6m/s
07:00 ☾	-	0%	40%	0%	84%	40%	1.1m/s
08:00 ☾	-	0%	30%	0%	76%	30%	1.9m/s
09:00 ☾	-	0%	10%	0%	69%	10%	2.8m/s
10:00 ☾	-	0%	11%	0%	66%	11%	3.5m/s
11:00 ☾	-	0%	15%	0%	65%	15%	3.9m/s
12:00 ☾	-	0%	4%	0%	63%	4%	4.1m/s
13:00 ☾	-	0%	4%	0%	62%	4%	3.8m/s
14:00 ☾	-	0%	4%	0%	63%	4%	3.3m/s
15:00 ☾	-	0%	4%	0%	64%	4%	3.1m/s
16:00 ☾	-	0%	17%	0%	67%	17%	3.2m/s
17:00 ☾	-	0%	15%	0%	70%	15%	3.1m/s
18:00 ☾	-	0%	8%	1%	79%	8%	2.3m/s
19:00 ☾	-	0%	0%	5%	86%	5%	2m/s
20:00 ☾	-	0%	0%	5%	85%	5%	1.9m/s
21:00 ☾	-	0%	0%	5%	82%	5%	1.6m/s
22:00 ☾	-	0%	0%	5%	80%	5%	1.4m/s
23:00 ☾	-	0%	10%	7%	83%	10%	1m/s
Sat, Apr 11 Sunrise 05:36 Sunset 18:08
24:00 ☾	-	0%	71%	4%	88%	71%	1.6m/s
01:00 ☾	-	0%	87%	0%	87%	87%	2.4m/s
02:00 ☾	-	0%	86%	0%	86%	86%	2.6m/s
03:00 ☾	-	0%	36%	0%	88%	36%	2.4m/s
04:00 ☾	-	0%	15%	0%	93%	15%	2.1m/s
05:00 ☾	-	0%	3%	0%	94%	3%	2.2m/s
06:00 ☾	-	0%	4%	0%	94%	4%	1.8m/s
07:00 ☾	-	0%	3%	0%	81%	3%	1.7m/s
08:00 ☾	-	0%	3%	0%	73%	3%	2m/s
09:00 ☾	-	0%	3%	0%	68%	3%	2.4m/s
10:00 ☾	-	0%	6%	0%	64%	6%	3.1m/s
11:00 ☾	-	0%	4%	0%	61%	4%	3.8m/s
12:00 ☾	-	0%	4%	0%	58%	4%	3.9m/s
13:00 ☾	-	0%	5%	0%	59%	5%	4.1m/s
14:00 ☾	-	0%	4%	26%	66%	30%	3.3m/s
15:00 ☾	-	0%	2%	52%	72%	54%	2.5m/s
16:00 ☾	-	0%	0%	78%	79%	78%	1.8m/s
17:00 ☾	-	0%	21%	53%	83%	73%	2.1m/s
18:00 ☾	-	0%	42%	28%	87%	68%	2.4m/s
19:00 ☾	-	0%	64%	3%	92%	64%	2.7m/s
20:00 ☾	-	0%	48%	2%	91%	48%	2.6m/s
21:00 ☾	-	0%	32%	1%	90%	32%	2.4m/s
22:00 ☾	-	0%	16%	0%	89%	16%	2.3m/s
23:00 ☾	-	0%	16%	0%	87%	16%	2.2m/s
Sun, Apr 12 Sunrise 05:35 Sunset 18:09
24:00 ☾	-	0%	16%	0%	85%	16%	2.2m/s
01:00 ☾	-	0%	16%	0%	83%	16%	2.1m/s
02:00 ☾	-	0%	12%	0%	77%	12%	2.4m/s
03:00 ☾	-	0%	7%	0%	72%	7%	2.7m/s
04:00 ☾	-	0%	3%	0%	66%	3%	3m/s
05:00 ☾	-	0%	4%	0%	65%	4%	3.2m/s
06:00 ☾	-	0%	4%	0%	64%	4%	3.4m/s
07:00 ☾	-	0%	4%	0%	63%	4%	3.6m/s
08:00 ☾	-	0%	7%	0%	64%	7%	3.4m/s

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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