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Rule Morning Frost

Wast Water - Morning Frost - Lake District

Wasdale Head, England, United Kingdom

Frost crystals on calm, cold mornings near sunrise

No opportunities right now
Here’s what usually blocks matches

No Morning Frost opportunities in the next 14 days

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Rule requirements (key thresholds)
Time Window · Sunrise -45m to +90m Frost Probability · ≥ 60.0% Wind Speed · ≤ 1.5m/s

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Frost Probability 100% failing
Time Window 88% failing
Wind Speed 57% failing

Currently

Real-time conditions
Soil Temperature12.4°C
Dew Point11.2°C (moderate dew point)
Wind Speed2.7m/s (calm conditions)
Cloud Cover5%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the conditions that create the Lake District's enchanting frost photography opportunities. We combine temperature, dewpoint, wind, and humidity data to predict when hoar frost will transform England's most romantic landscapes into glittering winter scenes.

The Lake District's combination of lakes, tarns, and sheltered valleys creates ideal conditions for heavy frost formation. England's naturally high humidity combined with calm, cold nights produces thick hoar frost deposits that coat every surface. The region's intimate scale means frost-covered scenes retain the romantic quality that has drawn artists here for centuries.

What makes the Lake District special for frost photography:

  • Frozen tarns - Small tarns like Tarn Hows freeze solid, creating pristine ice skating scenes
  • Frosted fells - Grasses and bracken on fell sides become forests of ice crystals
  • Lake shore ice - Derwentwater and Windermere develop fascinating ice formations along their shores
  • Romantic compositions - Frost-covered stone walls, bare trees, and winter light evoke Wordsworth's poetry

Tarn Hows becomes a winter jewel when frozen and frost-covered—the small tarn surrounded by frosted woodland creates postcard-perfect scenes. Derwentwater's shores develop intricate ice patterns, particularly in sheltered bays like the view from Friars Crag. Higher tarns like Blea Tarn freeze reliably and hold frost longer, often remaining photogenic well into morning. Frosted bracken on the lower fells catches golden morning light beautifully. The key is arriving at dawn after clear, calm nights—our forecast identifies these conditions and predicts how long frost will persist after sunrise.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sat, May 23
14:000%2.9m/s
15:000%2.9m/s
16:000%2.7m/s
17:000%2.5m/s
18:000%2.4m/s
19:000%2.1m/s
20:000%2.1m/s
21:000%2.1m/s
22:000%2.2m/s
23:000%2.5m/s
Sun, May 24
24:000%2.6m/s
01:000%2.7m/s
02:000%2.8m/s
03:000%2.4m/s
04:000%2.5m/s
05:000%2.4m/s
06:000%2.3m/s
07:000%2.3m/s
08:000%2.1m/s
09:000%2.2m/s
10:000%2.9m/s
11:000%3m/s
12:000%3m/s
13:000%2.9m/s
14:000%2.7m/s
15:000%2.6m/s
16:000%2.7m/s
17:000%2.5m/s
18:000%2.5m/s
19:000%2m/s
20:000%1.8m/s
21:000%1.7m/s
22:000%1.4m/s
23:000%1.4m/s
Mon, May 25
24:000%1.5m/s
01:000%1.5m/s
02:000%1.6m/s
03:000%2m/s
04:000%2m/s
05:000%1.8m/s
06:000%2m/s
07:000%2.1m/s
08:000%1.6m/s
09:000%1.7m/s
10:000%2m/s
11:000%2.1m/s
12:000%2.3m/s
13:000%2.4m/s
14:000%2.3m/s
15:000%2m/s
16:000%1.8m/s
17:000%1.4m/s
18:000%1.1m/s
19:000%0.91m/s
20:000%0.91m/s
21:000%0.47m/s
22:000%0.57m/s
23:000%0.98m/s
Tue, May 26
24:000%1.1m/s
01:000%0.97m/s
02:000%0.75m/s
03:000%0.71m/s
04:000%0.86m/s
05:000%1.1m/s
06:000%1.4m/s
07:000%1.5m/s
08:000%1.3m/s
09:000%1.4m/s
10:000%1.6m/s
11:000%1.7m/s
12:000%1.5m/s
13:000%1.7m/s
14:000%2m/s
15:000%2.3m/s
16:000%2.3m/s
17:000%2.5m/s
18:000%2.7m/s
19:000%2m/s
20:000%1.6m/s
21:000%1.2m/s
22:000%0.72m/s
23:000%0.76m/s
Wed, May 27
24:000%0.8m/s
01:000%0.84m/s
02:000%0.85m/s
03:000%0.86m/s
04:000%0.86m/s
05:000%1.2m/s
06:000%1.6m/s
07:000%1.9m/s
08:000%1.6m/s
09:000%1.2m/s
10:000%0.86m/s
11:000%1.3m/s
12:000%1.7m/s
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Frost Probability 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
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, May 24 Sunrise 04:54 Sunset 21:26
14:00
11°C 12°C 17°C - 5% 0.63kPa
15:00
11°C 13°C 17°C - 5% 0.67kPa
16:00
11°C 13°C 17°C - 5% 0.69kPa
17:00
9.6°C 13°C 17°C - 5% 0.72kPa
18:00
8.7°C 13°C 16°C - 5% 0.71kPa
19:00
9.7°C 13°C 15°C - 3% 0.55kPa
20:00
9.6°C 13°C 14°C - 3% 0.4kPa
21:00
6.7°C 13°C 12°C - 4% 0.38kPa
22:00
4.1°C 13°C 11°C - 0% 0.47kPa
23:00
3°C 13°C 11°C - 0% 0.51kPa
Mon, May 25 Sunrise 04:54 Sunset 21:26
24:00
2.6°C 12°C 11°C - 0% 0.54kPa
01:00
2.8°C 12°C 11°C - 0% 0.55kPa
02:00
3°C 12°C 11°C - 0% 0.55kPa
03:00
3.2°C 12°C 11°C - 1% 0.55kPa
04:00
3.5°C 11°C 11°C - 0% 0.55kPa
05:00
3.5°C 11°C 11°C - 0% 0.54kPa
06:00
5.6°C 11°C 12°C - 0% 0.45kPa
07:00
8.1°C 11°C 14°C - 0% 0.47kPa
08:00
8.9°C 11°C 16°C - 0% 0.65kPa
09:00
8.9°C 12°C 17°C - 0% 0.79kPa
10:00
9.1°C 12°C 18°C - 0% 0.89kPa
11:00
9.6°C 12°C 19°C - 0% 0.97kPa
12:00
10°C 13°C 20°C - 0% 1kPa
13:00
11°C 13°C 20°C - 0% 1.1kPa
14:00
11°C 13°C 21°C - 0% 1.1kPa
15:00
11°C 14°C 21°C - 0% 1.1kPa
16:00
11°C 14°C 21°C - 0% 1.1kPa
17:00
12°C 14°C 21°C - 0% 1.1kPa
18:00
12°C 15°C 21°C - 0% 1kPa
19:00
14°C 15°C 20°C - 0% 0.79kPa
20:00
13°C 15°C 19°C - 0% 0.62kPa
21:00
11°C 15°C 16°C - 0% 0.53kPa
22:00
10°C 15°C 15°C - 0% 0.48kPa
23:00
9.7°C 14°C 15°C - 5% 0.47kPa
Tue, May 26 Sunrise 04:53 Sunset 21:27
24:00
9.6°C 14°C 15°C - 9% 0.46kPa
01:00
9.4°C 14°C 15°C - 5% 0.47kPa
02:00
9.2°C 14°C 14°C - 5% 0.47kPa
03:00
9°C 14°C 14°C - 5% 0.47kPa
04:00
8.9°C 14°C 14°C - 5% 0.47kPa
05:00
8.9°C 13°C 14°C - 5% 0.45kPa
06:00
10°C 13°C 15°C - 47% 0.42kPa
07:00
13°C 13°C 17°C - 70% 0.45kPa
08:00
13°C 13°C 18°C - 50% 0.6kPa
09:00
14°C 14°C 19°C - 15% 0.68kPa
10:00
14°C 14°C 20°C - 9% 0.74kPa
11:00
15°C 14°C 21°C - 6% 0.77kPa
12:00
16°C 15°C 22°C - 44% 0.81kPa
13:00
17°C 15°C 22°C - 39% 0.82kPa
14:00
17°C 16°C 23°C - 53% 0.81kPa
15:00
17°C 16°C 22°C - 66% 0.75kPa
16:00
17°C 16°C 22°C - 42% 0.74kPa
17:00
17°C 17°C 22°C - 43% 0.72kPa
18:00
17°C 17°C 22°C - 28% 0.62kPa
19:00
17°C 17°C 21°C - 56% 0.53kPa
20:00
16°C 17°C 19°C - 67% 0.33kPa
21:00
15°C 16°C 17°C - 78% 0.18kPa
22:00
14°C 16°C 14°C - 90% 0.06kPa
23:00
14°C 16°C 14°C - 91% 0.09kPa
Wed, May 27 Sunrise 04:52 Sunset 21:29
24:00
14°C 16°C 15°C - 93% 0.11kPa
01:00
13°C 16°C 15°C - 94% 0.14kPa
02:00
13°C 16°C 15°C - 89% 0.19kPa
03:00
14°C 16°C 16°C - 83% 0.25kPa
04:00
14°C 16°C 16°C - 78% 0.31kPa
05:00
14°C 16°C 17°C - 84% 0.36kPa
06:00
14°C 16°C 18°C - 91% 0.42kPa
07:00
14°C 16°C 18°C - 97% 0.48kPa
08:00
14°C 17°C 18°C - 98% 0.44kPa
09:00
14°C 17°C 18°C - 99% 0.41kPa
10:00
14°C 17°C 17°C - 99% 0.37kPa
11:00
14°C 17°C 18°C - 95% 0.4kPa
12:00
15°C 17°C 18°C - 90% 0.44kPa
13:00
15°C 17°C 19°C - 85% 0.47kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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