Rule Cloudscapes

Cloudscapes Forecast for Llyn Padarn, Snowdonia (Eryri)

Llanberis, Wales, United Kingdom

A long glacial lake below the Snowdon massif, with wooded shores, Dinorwic slate terraces and open water for mountain reflections.

Currently

Real-time conditions

Cloud Drama Score

Cloud Cover0%

Wind Gusts1.9m/s

Precipitation Chance0%

Air Pressure1016.8hPa

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

Next opportunity

Dramatic Cloud Drama

Llyn Padarn

Mon, Aug 24 · 11:00–12:00 · 1h window

Medium confidence

54%

☁️Cloud Drama Score85.7%

Cloud Cover: 56%

Wind Gusts: 1.3m/s

Precipitation Chance: 0%

Air Pressure: 1011.4hPa

Dramatic Cloud Drama at Sunset

Llyn Padarn

Mon, Aug 24 · 20:00–21:00

☁️Cloud Drama Score:100%

High

Dramatic Cloud Drama at Dusk

Llyn Padarn

Mon, Aug 24 · 21:00–22:00

☁️Cloud Drama Score:96.2%

High

Dramatic Cloud Drama at Sunrise

Llyn Padarn

Tue, Aug 25 · 05:00–08:00

☁️Cloud Drama Score:83.2-100%

High

Dramatic Cloud Drama

Llyn Padarn

Tue, Aug 25 · 08:00–10:00

☁️Cloud Drama Score:89.7-100%

High

Dramatic Cloud Drama at Sunrise

Llyn Padarn

Wed, Aug 26 · 05:00–08:00

☁️Cloud Drama Score:83.2-97.5%

High

Striking Cloud Drama

Llyn Padarn

Wed, Aug 26 · 08:00–09:00

☁️Cloud Drama Score:80.6%

Medium

+9 more windows in the next 14 days

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Cloudscapes conditions across Snowdonia (Eryri). The requirements and hourly values below show how those signals apply at Llyn Padarn.

Explore Cloudscapes conditions across Snowdonia (Eryri) →

Recorded match history

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

Last 30 days

recorded matching windows · 71% average confidence

Last 90 days

recorded matching windows · 69% average confidence

Last 365 days

136

recorded matching windows · 68% average confidence

Most frequent recorded start hour

08:00 local time, shared by 20 of 136 matches recorded in the last 365 days.

Most represented month

August, with 36 of 136 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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85-hour requirements breakdown

When available, the detailed table below covers only the stated 85-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

8matching hours in the next 85 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/London	Cloud Drama Score ≥ 75.0%
Sat, Aug 22
06:00	63%
07:00	53%
08:00	53%
09:00	52%
10:00	42%
11:00	37%
12:00	43%
13:00	42%
14:00	24%
15:00	25%
16:00	14%
17:00	13%
18:00	9.9%
19:00	5.9%
20:00	0.3%
21:00	0.4%
22:00	0.8%
23:00	0.9%
Sun, Aug 23
24:00	0.7%
01:00	0.7%
02:00	0.5%
03:00	2.7%
04:00	5.2%
05:00	9.1%
06:00	14%
07:00	14%
08:00	12%
09:00	1%
10:00	1.1%
11:00	5.8%
12:00	10%
13:00	10%
14:00	11%
15:00	14%
16:00	14%
17:00	9.8%
18:00	11%
19:00	11%
20:00	11%
21:00	14%
22:00	6.7%
23:00	13%
Mon, Aug 24
24:00	14%
01:00	15%
02:00	13%
03:00	15%
04:00	14%
05:00	16%
06:00	18%
07:00	27%
08:00	44%
09:00	66%
10:00	69%
11:00	86%
12:00	19%
13:00	32%
14:00	34%
15:00	39%
16:00	36%
17:00	38%
18:00	46%
19:00	54%
20:00	100%
21:00	96%
22:00	5.6%
23:00	9.5%
Tue, Aug 25
24:00	0%
01:00	0.3%
02:00	0%
03:00	0%
04:00	0%
05:00	83%
06:00	100%
07:00	100%
08:00	100%
09:00	90%
10:00	66%
11:00	60%
12:00	51%
13:00	51%
14:00	53%
15:00	53%
16:00	53%
17:00	53%
18:00	57%

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 Europe/London	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
Sat, Aug 22 Sunrise 06:09 Sunset 20:28
21:00 ☾	1017hPa	0%	0%	0%	0%	85%	-5.1°	0%	24134m	1.9m/s	1.8m/s
22:00 ☾	1017hPa	0%	0%	0%	0%	86%	-13°	0%	24135m	1.2m/s	1.1m/s
23:00 ☾	1017hPa	0%	0%	0%	0%	86%	-19°	0%	24134m	1.1m/s	0.9m/s
Sun, Aug 23 Sunrise 06:09 Sunset 20:28
24:00 ☾	1017hPa	0%	0%	0%	0%	86%	-23°	0%	24134m	0.63m/s	0.45m/s
01:00 ☾	1017hPa	0%	0%	0%	0%	87%	-25°	0%	24134m	0.52m/s	0.36m/s
02:00 ☾	1017hPa	0%	0%	0%	0%	89%	-25°	0%	24134m	0.61m/s	0.42m/s
03:00 ☾	1017hPa	0%	0%	0%	0%	91%	-22°	0%	24134m	0.52m/s	0.32m/s
04:00 ☾	1017hPa	0%	0%	0%	0%	92%	-17°	0%	24134m	0.71m/s	0.53m/s
05:00 ☾	1017hPa	3%	0%	0%	0%	92%	-10°	3%	24134m	0.92m/s	0.77m/s
06:00 ☾	1017hPa	5%	0%	0%	0%	93%	-2.2°	5%	24135m	1m/s	0.99m/s
07:00	1017hPa	5%	0%	0%	0%	93%	6.4°	5%	24135m	0.82m/s	0.78m/s
08:00	1017hPa	5%	0%	0%	0%	86%	15°	5%	24135m	0.3m/s	0.28m/s
09:00	1017hPa	0%	0%	0%	0%	78%	24°	0%	24134m	1.5m/s	0.82m/s
10:00	1017hPa	0%	0%	0%	0%	68%	33°	0%	24134m	1.9m/s	1.6m/s
11:00	1017hPa	3%	0%	0%	0%	59%	40°	3%	24134m	2.1m/s	2.2m/s
12:00	1017hPa	5%	0%	0%	0%	54%	45°	5%	24135m	1.9m/s	2.4m/s
13:00	1017hPa	5%	0%	0%	0%	52%	48°	5%	24135m	1.9m/s	2.9m/s
14:00	1016hPa	5%	0%	0%	0%	52%	47°	5%	24135m	1.9m/s	3.2m/s
15:00	1016hPa	5%	5%	0%	0%	52%	44°	6%	24134m	2.2m/s	3.1m/s
16:00	1016hPa	8%	0%	0%	0%	54%	37°	8%	24135m	2.2m/s	3m/s
17:00	1016hPa	5%	0%	0%	0%	55%	30°	5%	24135m	1.8m/s	3.1m/s
18:00	1016hPa	5%	0%	0%	0%	60%	21°	5%	24134m	2.7m/s	3.4m/s
19:00	1016hPa	5%	0%	0%	0%	68%	12°	5%	24135m	3.8m/s	3.2m/s
20:00	1015hPa	5%	0%	0%	0%	81%	3.2°	5%	24134m	4m/s	2.9m/s
21:00 ☾	1016hPa	5%	0%	0%	0%	88%	-5.4°	5%	24134m	3.3m/s	2.8m/s
22:00 ☾	1015hPa	26%	0%	0%	0%	88%	-13°	26%	24134m	3.1m/s	2.7m/s
23:00 ☾	1015hPa	32%	0%	0%	0%	87%	-19°	32%	24134m	3.1m/s	2.6m/s
Mon, Aug 24 Sunrise 06:11 Sunset 20:26
24:00 ☾	1015hPa	38%	0%	0%	0%	83%	-23°	38%	24134m	2.5m/s	2.3m/s
01:00 ☾	1014hPa	38%	0%	0%	0%	78%	-26°	38%	24134m	2.2m/s	2.2m/s
02:00 ☾	1014hPa	8%	0%	0%	0%	74%	-25°	8%	24134m	3m/s	2.8m/s
03:00 ☾	1013hPa	43%	0%	0%	0%	73%	-22°	43%	24134m	2.5m/s	2.4m/s
04:00 ☾	1013hPa	6%	0%	0%	0%	71%	-17°	6%	24135m	2.1m/s	2.2m/s
05:00 ☾	1013hPa	0%	0%	0%	0%	69%	-10°	0%	24134m	1.4m/s	1.4m/s
06:00 ☾	1012hPa	5%	0%	0%	0%	67%	-2.5°	5%	24134m	1.4m/s	1.5m/s
07:00	1012hPa	5%	0%	0%	0%	66%	6.2°	5%	24134m	1.6m/s	1.7m/s
08:00	1012hPa	73%	0%	0%	0%	61%	15°	73%	24134m	1.3m/s	0.98m/s
09:00	1012hPa	48%	0%	0%	0%	52%	24°	48%	24135m	0.53m/s	0.24m/s
10:00	1012hPa	32%	0%	6%	0%	47%	32°	32%	24135m	0.61m/s	0.46m/s
11:00	1011hPa	56%	0%	37%	0%	43%	40°	56%	24134m	1.3m/s	0.94m/s
12:00	1011hPa	100%	0%	5%	0%	41%	45°	100%	24134m	2.5m/s	1.1m/s
13:00	1011hPa	100%	0%	17%	0%	40%	48°	100%	24134m	3m/s	2.3m/s
14:00	1010hPa	100%	3%	95%	0%	41%	47°	100%	24134m	4m/s	3.6m/s
15:00	1010hPa	92%	6%	86%	0%	41%	43°	92%	24135m	4.8m/s	3.9m/s
16:00	1009hPa	100%	0%	98%	0%	40%	37°	100%	24134m	5.6m/s	4.6m/s
17:00	1009hPa	100%	0%	100%	33%	40%	29°	100%	24135m	6m/s	4.6m/s
18:00	1008hPa	83%	0%	100%	67%	47%	21°	100%	24134m	6.1m/s	4.2m/s
19:00	1008hPa	99%	0%	62%	100%	55%	12°	99%	24135m	6.8m/s	3.7m/s
20:00	1008hPa	70%	29%	20%	82%	67%	2.9°	70%	24134m	7.1m/s	3.6m/s
21:00 ☾	1008hPa	51%	83%	13%	63%	66%	-5.7°	83%	24134m	10m/s	3.8m/s
22:00 ☾	1008hPa	10%	76%	71%	45%	53%	-13°	76%	24134m	12m/s	4.6m/s
23:00 ☾	1008hPa	36%	77%	96%	35%	58%	-19°	96%	24135m	11m/s	5.4m/s
Tue, Aug 25 Sunrise 06:12 Sunset 20:23
24:00 ☾	1008hPa	100%	96%	94%	25%	62%	-24°	100%	24134m	11m/s	5.6m/s
01:00 ☾	1008hPa	100%	88%	57%	15%	66%	-26°	100%	24134m	8.9m/s	4.4m/s
02:00 ☾	998hPa	68%	76%	71%	15%	69%	-25°	99%	24134m	9m/s	4.3m/s
03:00 ☾	988hPa	37%	65%	84%	15%	72%	-23°	99%	24134m	9.1m/s	4.2m/s
04:00 ☾	978hPa	5%	53%	98%	15%	76%	-17°	98%	24135m	9.2m/s	4.1m/s
05:00 ☾	978hPa	14%	39%	82%	16%	67%	-11°	82%	24135m	9m/s	5m/s
06:00 ☾	977hPa	22%	25%	66%	17%	58%	-2.7°	66%	24135m	8.8m/s	5.9m/s
07:00	977hPa	31%	10%	50%	18%	50%	5.9°	50%	24135m	8.5m/s	6.8m/s
08:00	976hPa	30%	40%	64%	25%	48%	15°	66%	24135m	8.2m/s	6.4m/s
09:00	976hPa	28%	70%	78%	32%	46%	24°	83%	24135m	7.8m/s	6m/s
10:00	976hPa	27%	99%	91%	39%	44%	32°	99%	24135m	7.4m/s	5.7m/s
11:00	975hPa	51%	99%	94%	36%	46%	39°	99%	24135m	7.8m/s	5.1m/s
12:00	975hPa	76%	100%	97%	33%	48%	45°	100%	24135m	8.1m/s	4.5m/s
13:00	975hPa	100%	100%	100%	30%	51%	47°	100%	24135m	8.4m/s	3.9m/s
14:00	975hPa	100%	99%	98%	29%	53%	47°	100%	24135m	9.8m/s	4.2m/s
15:00	975hPa	100%	97%	96%	28%	55%	43°	100%	24135m	11m/s	4.5m/s
16:00	975hPa	100%	96%	95%	27%	57%	37°	100%	24135m	12m/s	4.8m/s
17:00	975hPa	100%	97%	94%	28%	62%	29°	100%	24135m	10m/s	4.3m/s
18:00	975hPa	100%	99%	93%	29%	67%	20°	100%	24135m	7.6m/s	3.7m/s
19:00	975hPa	100%	100%	92%	30%	72%	11°	100%	24135m	5.1m/s	3.2m/s
20:00	975hPa	100%	87%	81%	53%	76%	2.6°	100%	24135m	4.2m/s	3m/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.

How opportunities work → Weather data sources →

Forecast generated

Aug 22, 2026, 7:08 PM UTC

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