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Rule Blue Hour

Eastbourne - Blue Hour - London & Southeast England

Eastbourne, England, United Kingdom

When city lights balance with the deep blue twilight sky

No opportunities right now
Here’s what usually blocks matches

No Blue Hour opportunities in the next 14 days

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Rule requirements (key thresholds)
Blue Hour · Any Blue Hour Quality · ≥ 65.0% Precipitation Chance · ≤ 15.0%

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

Most common blockers (next 72 hours)
Blue Hour Quality 99% failing
Blue Hour 88% failing
Precipitation Chance 33% failing

Currently

Real-time conditions
Cloud Cover100%
Moon Altitude45.5°

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 predicts optimal blue hour conditions for London's world-class urban skyline and Southeast England's coastal scenes. We track civil twilight timing, cloud cover, and atmospheric clarity to identify when the deep blue sky will complement city lights and landmarks.

London offers some of Europe's finest blue hour photography—the contrast between modern glass towers like the Shard and historic landmarks like Tower Bridge creates visual tension that works brilliantly during twilight. Southeast coastal towns like Brighton and Whitstable add maritime character with piers and harbors lit up against twilight skies.

What makes London and Southeast blue hour exceptional:

  • Iconic skyline - The Shard, Gherkin, Walkie Talkie, and Tower Bridge combine ancient and modern architecture
  • Thames reflections - River mirrors the illuminated skyline creating double-exposure compositions
  • Brighton Pier - Historic Victorian pier lit up against Channel twilight creates classic blue hour scene
  • Whitstable harbour - Working harbor with boats, oyster shacks, and maritime character at dusk

Best conditions occur during clear or partly cloudy evenings when city lights shine bright against deep blue sky. Winter blue hour happens at convenient times (4-5pm), while summer requires late evening shooting (9-10pm). Popular viewpoints include Waterloo Bridge, Tower Bridge walkway, and South Bank.

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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
Blue Hour
Any
Blue Hour Quality
≥ 65.0%
Precipitation Chance
≤ 15.0%
Sat, Feb 21
19:000%28%
20:000%33%
21:000.6%39%
22:002.5%52%
23:002.5%65%
Sun, Feb 22
24:001.5%78%
01:000.9%83%
02:001.5%91%
03:002%99%
04:002.4%99%
05:002.4%100%
06:008%100%
07:000.4%84%
08:000.3%68%
09:000.3%52%
10:000.3%53%
11:000.2%55%
12:000.2%57%
13:000.2%54%
14:000%39%
15:000.2%24%
16:000.8%29%
17:0026%34%
18:0017%39%
19:002.4%26%
20:000.9%13%
21:003.8%0%
22:002.9%0%
23:007.1%0%
Mon, Feb 23
24:004.7%0%
01:004.6%0%
02:003.9%0%
03:003.9%0%
04:003.8%27%
05:003.9%54%
06:0026%82%
07:001.8%77%
08:001.3%73%
09:001.3%68%
10:001.3%73%
11:001%78%
12:000.8%84%
13:000.8%72%
14:000.8%61%
15:000.8%50%
16:000.8%54%
17:006%58%
18:004%62%
19:000.6%42%
20:001.3%23%
21:001.6%3.5%
22:002.5%2.3%
23:000.7%1.2%
Tue, Feb 24
24:001.2%0%
01:001.7%0%
02:003%0%
03:003.5%0%
04:001.8%0%
05:002.7%0%
06:0022%0%
07:001.2%0%
08:001.1%0%
09:002.6%0%
10:003%0%
11:001.7%0%
12:001.7%0%
13:002.9%0%
14:001.8%0%
15:001.8%0%
16:002.6%0%
17:0065%0%
18:0065%0%
19:009.7%0%
20:008.4%0%
21:009.2%0%
22:009.2%0%
23:009.7%0%
Wed, Feb 25
24:0010%0%
01:0010%0%
02:009.5%0%
03:009.5%0%
04:009.4%0%
05:009.9%0%
06:0066%0%
07:002.7%0%
08:002.1%0%
09:002.1%0%
10:002.4%0%
11:002.4%0%
12:001.2%0%
13:001.3%17%
14:002%33%
15:002.1%50%
16:002%67%
17:0039%83%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Blue Hour Quality 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
Blue Hour
High Clouds
%
Low Clouds
%
Mid-Level Clouds
%
Relative Humidity
%
Solar Elevation
°
Total Cloud Coverage
%
Visibility
m
Wind Speed
m/s
Sun, Feb 22 Sunrise 06:57 Sunset 17:27
19:00
- 95% 99% 56% 96% -15° 100% 24134m 9m/s
20:00
- 20% 94% 47% 97% -25° 94% 3402m 9m/s
21:00
- 87% 86% 4% 96% -33° 94% 24135m 9.5m/s
22:00
- 4% 73% 4% 94% -41° 73% 24135m 9.7m/s
23:00
- 5% 16% 3% 94% -47° 17% 24135m 8.9m/s
Mon, Feb 23 Sunrise 06:55 Sunset 17:29
24:00
- 75% 0% 1% 92% -49° 75% 24135m 9.1m/s
01:00
- 100% 9% 0% 92% -48° 100% 24135m 9.2m/s
02:00
- 99% 21% 0% 92% -43° 99% 24135m 9m/s
03:00
- 100% 26% 0% 93% -37° 100% 24135m 8.9m/s
04:00
- 90% 22% 0% 93% -28° 90% 24134m 8.7m/s
05:00
- 100% 32% 0% 93% -19° 100% 24135m 9.3m/s
06:00
- 100% 30% 0% 93% -9.5° 100% 24134m 9.8m/s
07:00
- 100% 6% 20% 91% 0.34° 100% 24135m 9.2m/s
08:00
- 100% 35% 5% 91% 8.8° 100% 24134m 9.8m/s
09:00
- 100% 38% 100% 91% 17° 100% 24135m 9.7m/s
10:00
- 100% 60% 98% 91% 23° 100% 24134m 9.9m/s
11:00
- 23% 63% 48% 91% 28° 69% 24134m 9.8m/s
12:00
- 13% 89% 46% 90% 29° 89% 24135m 9.5m/s
13:00
- 64% 100% 23% 89% 29° 100% 24134m 9.5m/s
14:00
- 100% 100% 100% 92% 25° 100% 24135m 8.9m/s
15:00
- 73% 100% 100% 92% 20° 100% 24135m 8.8m/s
16:00
- 83% 100% 100% 95% 12° 100% 24134m 8.3m/s
17:00
- 89% 100% 100% 97% 3.8° 100% 3878m 8.4m/s
18:00
- 100% 100% 100% 97% -5.5° 100% 2965m 9.1m/s
19:00
- 89% 100% 96% 97% -15° 100% 2990m 9.3m/s
20:00
- 28% 100% 24% 97% -24° 100% 8154m 9.5m/s
21:00
- 18% 100% 25% 96% -33° 100% 13350m 9.3m/s
22:00
- 5% 99% 5% 96% -41° 99% 24135m 9.2m/s
23:00
- 5% 99% 5% 97% -46° 99% 2581m 9.2m/s
Tue, Feb 24 Sunrise 06:53 Sunset 17:31
24:00
- 3% 100% 60% 96% -49° 100% 8419m 8.9m/s
01:00
- 5% 96% 24% 97% -48° 96% 6163m 7.2m/s
02:00
- 5% 100% 5% 97% -43° 100% 24135m 6.3m/s
03:00
- 5% 53% 0% 97% -36° 53% 6841m 5.9m/s
04:00
- 5% 74% 0% 98% -28° 74% 2166m 5.5m/s
05:00
- 7% 67% 0% 97% -19° 67% 8423m 5.1m/s
06:00
- 10% 86% 0% 97% -9.2° 86% 24135m 4.4m/s
07:00
- 5% 100% 0% 97% 0.61° 100% 24134m 4m/s
08:00
- 5% 100% 0% 96% 9.1° 100% 24134m 4.9m/s
09:00
- 5% 18% 0% 96% 17° 19% 24135m 5.9m/s
10:00
- 16% 9% 0% 92% 23° 16% 24135m 7m/s
11:00
- 99% 4% 0% 91% 28° 99% 24134m 7.1m/s
12:00
- 96% 0% 0% 91% 30° 96% 24135m 6.9m/s
13:00
- 17% 1% 0% 90% 29° 17% 24134m 6.5m/s
14:00
- 68% 0% 0% 89% 26° 68% 24135m 6.3m/s
15:00
- 82% 0% 0% 88% 20° 82% 24135m 5.6m/s
16:00
- 14% 0% 0% 87% 12° 14% 24134m 4.6m/s
17:00
- 5% 0% 0% 88% 4.1° 5% 24135m 3.7m/s
18:00
- 5% 0% 0% 90% -5.2° 5% 24135m 3.1m/s
19:00
- 5% 0% 0% 91% -15° 5% 24134m 3.2m/s
20:00
- 6% 0% 0% 91% -24° 6% 24134m 3.6m/s
21:00
- 5% 0% 0% 90% -33° 5% 24134m 4m/s
22:00
- 5% 0% 0% 90% -40° 5% 24134m 4.3m/s
23:00
- 5% 0% 0% 92% -46° 5% 24134m 3.9m/s
Wed, Feb 25 Sunrise 06:51 Sunset 17:32
24:00
- 0% 0% 0% 93% -48° 0% 24135m 3.8m/s
01:00
- 0% 0% 0% 92% -47° 1% 24135m 3.9m/s
02:00
- 0% 0% 1% 90% -43° 1% 24135m 4m/s
03:00
- 0% 0% 1% 89% -36° 1% 24135m 4.2m/s
04:00
- 2% 0% 1% 86% -28° 2% 24135m 4.3m/s
05:00
- 3% 0% 0% 83% -18° 4% 24135m 4.5m/s
06:00
- 5% 0% 0% 80% -8.9° 5% 24135m 4.7m/s
07:00
- 37% 0% 0% 79% 0.89° 37% 24135m 4.4m/s
08:00
- 68% 0% 0% 78% 9.4° 68% 24135m 4.2m/s
09:00
- 100% 0% 0% 76% 17° 100% 24135m 4m/s
10:00
- 68% 0% 33% 81% 24° 100% 24135m 3.5m/s
11:00
- 37% 0% 67% 85% 28° 100% 24135m 2.9m/s
12:00
- 5% 0% 100% 89% 30° 100% 24135m 2.4m/s
13:00
- 10% 0% 95% 90% 29° 95% 24135m 2.5m/s
14:00
- 15% 0% 90% 90% 26° 90% 24135m 2.6m/s
15:00
- 20% 0% 84% 91% 20° 84% 24135m 2.8m/s
16:00
- 18% 0% 82% 92% 13° 82% 24135m 3m/s
17:00
- 16% 0% 79% 93% 4.4° 79% 24135m 3.2m/s
18:00
- 13% 0% 77% 94% -4.9° 77% 24135m 3.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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