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Rule Cloudscapes

Cloudscapes Forecast for Hoi An, Vietnam

Hoi An, Quảng Nam Province, Vietnam

Hoi An's ochre shophouses appear through dark timber doorways and narrow lanes. Along the Thu Bon, boats and lantern reflections organize the busier riverfront into horizontal layers.

Currently

Real-time conditions
Cloud Cover100%
Wind Gusts7.2m/s
Precipitation Chance0%
Air Pressure998.4hPa

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Ho_Chi_Minh
cloudscapes weather icon
Next opportunity
Dramatic Cloud Drama
Hoi An
Tomorrow · 14:00–15:00 · 1h window
High confidence
75%
☁️Cloud Drama Score100%
Cloud Cover: 48%
Wind Gusts: 8.1m/s
Precipitation Chance: 23%
Air Pressure: 997.0hPa
cloudscapes weather icon
Dramatic Cloud Drama
Hoi An
Tue, Aug 25 · 07:00–09:00
☁️Cloud Drama Score:86.1-91.9%
High
cloudscapes weather icon
Dramatic Cloud Drama at Sunrise
Hoi An
Sun, Aug 30 · 05:00–06:00
☁️Cloud Drama Score:100%
Medium

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Cloudscapes conditions across Vietnam. The requirements and hourly values below show how those signals apply at Hoi An.

Explore Cloudscapes conditions across Vietnam →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Hoi An during the last 365 days.

Last 30 days
14
recorded matching windows · 66% average confidence
Last 90 days
30
recorded matching windows · 65% average confidence
Last 365 days
40
recorded matching windows · 64% average confidence
Most frequent recorded start hour

18:00 local time, shared by 9 of 40 matches recorded in the last 365 days.

Most represented month

July, with 14 of 40 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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86-hour requirements breakdown

When available, the detailed table below covers only the stated 86-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour
3matching hours in the next 86 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Asia/Ho_Chi_Minh
Cloud Drama Score
≥ 75.0%
Sat, Aug 22
12:0049%
13:0041%
14:0051%
15:0049%
16:0053%
17:0052%
18:0058%
19:000.4%
20:000%
21:000%
22:001.4%
23:000%
Sun, Aug 23
24:000%
01:005.2%
02:0010%
03:0015%
04:0014%
05:0060%
06:0057%
07:0058%
08:0055%
09:0056%
10:0044%
11:0045%
12:0037%
13:0039%
14:0054%
15:0048%
16:0052%
17:0060%
18:0063%
19:0015%
20:0015%
21:006.1%
22:0013%
23:001.4%
Mon, Aug 24
24:000.9%
01:001.8%
02:002.3%
03:0015%
04:008.9%
05:0048%
06:0056%
07:0051%
08:0056%
09:0063%
10:0042%
11:0067%
12:0046%
13:0046%
14:00100%
15:0038%
16:0065%
17:0034%
18:0072%
19:0011%
20:005.9%
21:005.1%
22:0011%
23:0011%
Tue, Aug 25
24:0015%
01:0015%
02:0015%
03:0015%
04:0015%
05:0060%
06:0059%
07:0092%
08:0086%
09:0073%
10:0033%
11:0030%
12:0020%
13:0022%
14:0015%
15:0020%
16:0022%
17:0053%
18:0051%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Aug 26
24:000%
01:000%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Cloud Drama Score 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/Ho_Chi_Minh
Air Pressure
hPa
High Clouds
%
Low Clouds
%
Mid-Level Clouds
%
Precipitation Chance
%
Relative Humidity
%
Solar Elevation
°
Total Cloud Coverage
%
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Sun, Aug 23 Sunrise 05:32 Sunset 18:06
03:00
998hPa 100% 0% 29% 0% 69% -35° 100% 24135m 7.2m/s 4.3m/s
04:00
999hPa 95% 0% 59% 0% 69% -22° 95% 24135m 6.5m/s 4.3m/s
05:00
999hPa 97% 0% 71% 0% 67% -8.4° 97% 24134m 6.4m/s 4.4m/s
06:00
999hPa 100% 1% 89% 0% 65% 5.8° 100% 24134m 6.9m/s 4.4m/s
07:00
1000hPa 100% 0% 94% 0% 63% 20° 100% 24134m 8.1m/s 4.4m/s
08:00
1000hPa 93% 0% 50% 0% 57% 34° 93% 24134m 8.6m/s 5.9m/s
09:00
1000hPa 90% 1% 72% 0% 51% 49° 95% 24134m 8.6m/s 6.2m/s
10:00
1000hPa 100% 5% 83% 0% 47% 63° 100% 24134m 8.6m/s 5.7m/s
11:00
999hPa 67% 18% 99% 7% 48% 77° 99% 24134m 7.9m/s 4.1m/s
12:00
999hPa 73% 9% 92% 15% 55% 85° 92% 24135m 6.4m/s 3.2m/s
13:00
999hPa 100% 16% 73% 22% 57% 72° 100% 24135m 5.3m/s 1.7m/s
14:00
997hPa 100% 23% 86% 22% 53% 58° 100% 24135m 6.8m/s 1.3m/s
15:00
997hPa 100% 3% 73% 22% 53% 44° 100% 24134m 6.3m/s 0.71m/s
16:00
997hPa 98% 8% 28% 22% 55% 29° 98% 24134m 7.4m/s 2.4m/s
17:00
997hPa 100% 7% 23% 22% 56% 15° 100% 24134m 7.1m/s 1.7m/s
18:00
998hPa 100% 0% 68% 22% 59% 0.98° 100% 24135m 5.5m/s 1.7m/s
19:00
999hPa 100% 0% 5% 22% 59% -13° 100% 24135m 7.1m/s 4.4m/s
20:00
999hPa 100% 0% 5% 15% 62% -27° 100% 24135m 9.3m/s 5.9m/s
21:00
1000hPa 100% 0% 13% 7% 62% -40° 100% 24134m 9.2m/s 5.7m/s
22:00
1001hPa 100% 0% 5% 0% 65% -52° 100% 24135m 7.4m/s 4.8m/s
23:00
1001hPa 100% 0% 40% 0% 66% -60° 100% 24135m 7.1m/s 4.4m/s
Mon, Aug 24 Sunrise 05:32 Sunset 18:05
24:00
1000hPa 100% 0% 76% 0% 67% -63° 100% 24134m 7.6m/s 4.5m/s
01:00
999hPa 100% 0% 46% 0% 67% -58° 100% 24135m 8.4m/s 4.5m/s
02:00
998hPa 100% 0% 54% 0% 67% -48° 100% 24134m 6.9m/s 4.3m/s
03:00
998hPa 100% 0% 9% 0% 68% -36° 100% 24134m 7m/s 4.4m/s
04:00
998hPa 97% 0% 12% 0% 69% -22° 97% 24134m 7.2m/s 4.6m/s
05:00
999hPa 100% 5% 56% 0% 68% -8.5° 100% 24134m 8.2m/s 4.6m/s
06:00
999hPa 100% 3% 94% 0% 66% 5.7° 100% 24134m 8.5m/s 4.8m/s
07:00
1000hPa 100% 2% 97% 0% 61% 20° 100% 24134m 8.4m/s 5.4m/s
08:00
1000hPa 88% 32% 80% 0% 57% 34° 88% 24134m 8.8m/s 6.4m/s
09:00
1000hPa 80% 29% 35% 0% 54% 49° 80% 24134m 8.3m/s 6m/s
10:00
1000hPa 100% 47% 12% 0% 52% 63° 100% 24135m 8.7m/s 6.5m/s
11:00
999hPa 59% 40% 5% 9% 50% 77° 60% 24134m 8.7m/s 6.5m/s
12:00
998hPa 100% 38% 16% 17% 48% 85° 100% 24134m 9.1m/s 7.2m/s
13:00
997hPa 100% 20% 27% 26% 48% 72° 100% 24134m 9.2m/s 7.4m/s
14:00
997hPa 42% 42% 20% 23% 51% 58° 48% 24134m 8.1m/s 5.2m/s
15:00
997hPa 100% 35% 4% 20% 54% 43° 100% 24135m 6.9m/s 3.6m/s
16:00
997hPa 79% 13% 2% 17% 55% 29° 79% 24135m 6.7m/s 3.7m/s
17:00
997hPa 86% 0% 7% 45% 55% 15° 86% 24134m 6.7m/s 4.2m/s
18:00
999hPa 69% 0% 9% 72% 58% 0.84° 69% 24134m 7.5m/s 5.1m/s
19:00
999hPa 92% 0% 19% 100% 62% -14° 92% 24134m 6.8m/s 4.6m/s
20:00
1000hPa 100% 1% 24% 67% 64% -27° 100% 24134m 6.3m/s 4.3m/s
21:00
1001hPa 100% 4% 33% 33% 64% -40° 100% 24135m 7.5m/s 4.4m/s
22:00
1001hPa 100% 0% 50% 0% 64% -52° 100% 24134m 8.1m/s 4.7m/s
23:00
1000hPa 100% 0% 78% 0% 66% -61° 100% 24135m 9.2m/s 5.3m/s
Tue, Aug 25 Sunrise 05:32 Sunset 18:05
24:00
1000hPa 100% 0% 78% 0% 65% -63° 100% 24134m 9.4m/s 5.4m/s
01:00
999hPa 100% 0% 76% 0% 65% -58° 100% 24135m 8.5m/s 5.2m/s
02:00
999hPa 100% 0% 80% 0% 66% -48° 100% 24134m 8m/s 4.9m/s
03:00
998hPa 100% 2% 100% 0% 66% -36° 100% 24134m 7.9m/s 4.9m/s
04:00
999hPa 100% 0% 97% 0% 66% -22° 100% 24134m 7.3m/s 4.6m/s
05:00
999hPa 100% 0% 70% 0% 66% -8.5° 100% 24135m 6.6m/s 4.2m/s
06:00
1000hPa 100% 2% 60% 0% 66% 5.7° 100% 24134m 6.3m/s 4.1m/s
07:00
1000hPa 72% 23% 58% 0% 63% 20° 72% 24134m 6m/s 4.1m/s
08:00
1000hPa 72% 15% 39% 0% 66% 34° 72% 24134m 5.4m/s 4.5m/s
09:00
1000hPa 73% 8% 19% 0% 70% 49° 73% 24134m 4.8m/s 4.9m/s
10:00
1000hPa 73% 0% 0% 0% 73% 63° 73% 24135m 4.2m/s 5.3m/s
11:00
1000hPa 82% 0% 0% 7% 72% 77° 82% 24135m 3.8m/s 4.2m/s
12:00
1001hPa 91% 0% 0% 15% 71% 84° 91% 24135m 3.4m/s 3.1m/s
13:00
1001hPa 100% 0% 1% 22% 70% 72° 100% 24135m 2.9m/s 2m/s
14:00
1002hPa 98% 0% 2% 48% 70% 58° 98% 24135m 5.5m/s 3.6m/s
15:00
1002hPa 97% 0% 4% 74% 70% 43° 97% 24135m 8.1m/s 5.3m/s
16:00
1003hPa 96% 0% 6% 100% 70% 29° 96% 24135m 11m/s 7m/s
17:00
1002hPa 95% 0% 20% 72% 70% 15° 95% 24135m 11m/s 6.9m/s
18:00
1002hPa 95% 0% 34% 43% 70% 0.7° 95% 24135m 11m/s 6.7m/s
19:00
1001hPa 95% 0% 48% 15% 71% -14° 95% 24135m 11m/s 6.6m/s
20:00
1001hPa 97% 0% 36% 10% 71% -27° 97% 24135m 11m/s 6.8m/s
21:00
1001hPa 98% 1% 24% 5% 72% -41° 98% 24135m 11m/s 7m/s
22:00
1001hPa 100% 1% 11% 0% 72% -52° 100% 24135m 11m/s 7.3m/s
23:00
1001hPa 100% 1% 8% 17% 72% -61° 100% 24135m 11m/s 7.3m/s
Wed, Aug 26 Sunrise 05:33 Sunset 18:04
24:00
1002hPa 100% 0% 4% 33% 71% -63° 100% 24135m 11m/s 7.4m/s
01:00
1002hPa 100% 0% 1% 50% 71% -58° 100% 24135m 11m/s 7.4m/s
02:00
1002hPa 100% 0% 0% 33% 68% -48° 100% 24135m 11m/s 8m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

Forecast generated

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