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Rule Morning Frost

Windermere - Morning Frost - Lake District

Bowness-on-Windermere, 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 47% failing

Currently

Real-time conditions
Soil Temperature12.9°C
Dew Point10.6°C (moderate dew point)
Wind Speed3.1m/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%4.1m/s
15:000%3.9m/s
16:000%3.7m/s
17:000%3.5m/s
18:000%3.1m/s
19:000%2.5m/s
20:000%1.7m/s
21:000%1.2m/s
22:000%1.2m/s
23:000%1.1m/s
Sun, May 24
24:000%0.96m/s
01:000%0.42m/s
02:000%0.56m/s
03:000%0.39m/s
04:000%0.1m/s
05:000%0.45m/s
06:000%0.75m/s
07:000%1.3m/s
08:000%2m/s
09:000%2.7m/s
10:000%2.9m/s
11:000%2.6m/s
12:000%2.8m/s
13:000%3.2m/s
14:000%3.1m/s
15:000%3.1m/s
16:000%2.9m/s
17:000%2.4m/s
18:000%2.1m/s
19:000%1.5m/s
20:000%1.2m/s
21:000%0.56m/s
22:000%0.3m/s
23:000%0.86m/s
Mon, May 25
24:000%1.3m/s
01:000%1.4m/s
02:000%1.4m/s
03:000%1.4m/s
04:000%1.3m/s
05:000%1.4m/s
06:000%1.4m/s
07:000%0.95m/s
08:000%0.46m/s
09:000%0.5m/s
10:000%0.82m/s
11:000%1.4m/s
12:000%2m/s
13:000%2m/s
14:000%2.1m/s
15:000%2m/s
16:000%1.7m/s
17:000%1m/s
18:000%0.46m/s
19:000%0.72m/s
20:000%0.83m/s
21:000%0.47m/s
22:000%0.17m/s
23:000%1.2m/s
Tue, May 26
24:000%2.2m/s
01:000%2.1m/s
02:000%1.9m/s
03:000%2m/s
04:000%1.7m/s
05:000%1.7m/s
06:000%2.1m/s
07:000%1.6m/s
08:000%1.2m/s
09:000%0.98m/s
10:000%0.82m/s
11:000%0.56m/s
12:000%0.52m/s
13:000%0.65m/s
14:000%1.1m/s
15:000%1.3m/s
16:000%1.4m/s
17:000%0.85m/s
18:000%1.7m/s
19:000%2.5m/s
20:000%2.1m/s
21:000%1.8m/s
22:000%1.4m/s
23:000%1.4m/s
Wed, May 27
24:000%1.4m/s
01:000%1.3m/s
02:000%1.5m/s
03:000%1.6m/s
04:000%1.7m/s
05:000%2m/s
06:000%2.2m/s
07:000%2.5m/s
08:000%2.5m/s
09:000%2.5m/s
10:000%2.5m/s
11:000%2.4m/s
12:000%2.2m/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 04:53 Sunset 21:24
14:00
11°C 13°C 18°C - 5% 0.72kPa
15:00
9.8°C 13°C 18°C - 5% 0.84kPa
16:00
8.8°C 13°C 18°C - 5% 0.9kPa
17:00
8.4°C 14°C 18°C - 5% 0.95kPa
18:00
8.5°C 14°C 18°C - 4% 0.9kPa
19:00
10°C 14°C 17°C - 0% 0.66kPa
20:00
10°C 14°C 15°C - 0% 0.45kPa
21:00
8.4°C 14°C 12°C - 0% 0.33kPa
22:00
7.3°C 14°C 11°C - 4% 0.29kPa
23:00
6.7°C 13°C 11°C - 1% 0.29kPa
Mon, May 25 Sunrise 04:53 Sunset 21:24
24:00
6.1°C 13°C 10°C - 0% 0.32kPa
01:00
5.7°C 13°C 10°C - 0% 0.34kPa
02:00
5.4°C 13°C 10°C - 0% 0.36kPa
03:00
5°C 13°C 10°C - 0% 0.38kPa
04:00
4.7°C 12°C 10°C - 0% 0.39kPa
05:00
4.4°C 12°C 10°C - 0% 0.4kPa
06:00
5.7°C 12°C 11°C - 0% 0.4kPa
07:00
7.6°C 12°C 13°C - 0% 0.49kPa
08:00
8°C 12°C 15°C - 0% 0.67kPa
09:00
8.6°C 12°C 17°C - 0% 0.81kPa
10:00
9.2°C 13°C 19°C - 0% 0.98kPa
11:00
9.5°C 13°C 20°C - 0% 1.1kPa
12:00
9.9°C 13°C 20°C - 0% 1.2kPa
13:00
9.8°C 14°C 21°C - 0% 1.3kPa
14:00
10°C 14°C 21°C - 0% 1.3kPa
15:00
10°C 14°C 22°C - 0% 1.4kPa
16:00
11°C 14°C 22°C - 0% 1.4kPa
17:00
12°C 15°C 23°C - 0% 1.4kPa
18:00
13°C 15°C 23°C - 0% 1.3kPa
19:00
15°C 15°C 22°C - 0% 0.9kPa
20:00
14°C 15°C 20°C - 0% 0.69kPa
21:00
13°C 15°C 17°C - 0% 0.53kPa
22:00
12°C 15°C 16°C - 1% 0.44kPa
23:00
11°C 15°C 16°C - 5% 0.41kPa
Tue, May 26 Sunrise 04:52 Sunset 21:25
24:00
12°C 15°C 15°C - 5% 0.35kPa
01:00
12°C 15°C 15°C - 22% 0.31kPa
02:00
12°C 15°C 15°C - 8% 0.3kPa
03:00
12°C 15°C 15°C - 5% 0.3kPa
04:00
11°C 15°C 14°C - 5% 0.3kPa
05:00
11°C 15°C 14°C - 5% 0.3kPa
06:00
12°C 15°C 15°C - 5% 0.32kPa
07:00
13°C 15°C 17°C - 9% 0.41kPa
08:00
13°C 15°C 19°C - 14% 0.63kPa
09:00
14°C 15°C 20°C - 18% 0.8kPa
10:00
15°C 15°C 22°C - 27% 0.95kPa
11:00
15°C 15°C 23°C - 43% 1.1kPa
12:00
16°C 16°C 24°C - 38% 1.1kPa
13:00
16°C 16°C 24°C - 33% 1.2kPa
14:00
17°C 17°C 25°C - 44% 1.2kPa
15:00
17°C 17°C 25°C - 55% 1.2kPa
16:00
17°C 17°C 24°C - 53% 1kPa
17:00
18°C 17°C 23°C - 29% 0.85kPa
18:00
18°C 18°C 23°C - 27% 0.65kPa
19:00
19°C 18°C 22°C - 25% 0.43kPa
20:00
16°C 17°C 18°C - 36% 0.33kPa
21:00
12°C 16°C 15°C - 48% 0.24kPa
22:00
9.2°C 15°C 11°C - 59% 0.18kPa
23:00
9.4°C 14°C 12°C - 53% 0.18kPa
Wed, May 27 Sunrise 04:51 Sunset 21:27
24:00
9.6°C 14°C 12°C - 46% 0.19kPa
01:00
9.7°C 14°C 12°C - 40% 0.19kPa
02:00
11°C 14°C 13°C - 39% 0.25kPa
03:00
11°C 14°C 15°C - 38% 0.32kPa
04:00
12°C 14°C 16°C - 36% 0.4kPa
05:00
13°C 14°C 17°C - 57% 0.45kPa
06:00
14°C 14°C 18°C - 78% 0.51kPa
07:00
14°C 15°C 19°C - 98% 0.58kPa
08:00
14°C 15°C 19°C - 96% 0.55kPa
09:00
14°C 15°C 18°C - 94% 0.52kPa
10:00
14°C 15°C 18°C - 92% 0.48kPa
11:00
14°C 15°C 18°C - 85% 0.46kPa
12:00
14°C 15°C 18°C - 79% 0.43kPa
13:00
14°C 15°C 17°C - 73% 0.41kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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