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Rule Blue Hour

Riomaggiore - Blue Hour - Cinque Terre

Riomaggiore, Liguria, Italy

When city lights balance with the deep blue twilight sky

Currently

Real-time conditions
Cloud Cover6%
Moon Altitude10.1°

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Rome
blue-hour weather icon
Next opportunity
Good Blue Hour (clear) at Sunset
Riomaggiore
Today · 21:11–21:25 · 1h window
High confidence
76%
🌉Blue Hour Quality72.2%
Cloud Cover: 0%
Moon Illumination: 61%
Moon Altitude: 48.3°
blue-hour weather icon
Good Blue Hour (clear) at Sunrise
Riomaggiore
Tomorrow · 05:10–05:24
🌉Blue Hour Quality:75%
High
blue-hour weather icon
Good Blue Hour (clear) at Sunset
Riomaggiore
Tomorrow · 21:12–21:26
🌉Blue Hour Quality:75%
High
blue-hour weather icon
Good Blue Hour (clear) at Sunrise
Riomaggiore
Tue, May 26 · 05:09–05:23
🌉Blue Hour Quality:72.2%
Medium
blue-hour weather icon
Good Blue Hour (clear) at Sunrise
Riomaggiore
Wed, May 27 · 05:08–05:22
🌉Blue Hour Quality:68.5%
Medium
blue-hour weather icon
Good Blue Hour (clear) at Sunset
Riomaggiore
Mon, Jun 1 · 21:19–21:33
🌉Blue Hour Quality:65.8%
Medium

What this forecast looks for

Plain-language explanation from the rule

This forecast identifies the twilight conditions when village lights balance perfectly with fading natural light to create magical atmospheres. We track cloud cover, visibility, and atmospheric conditions to predict optimal blue hour opportunities along the Ligurian coast.

The cliff villages transform during blue hour as house lights, restaurant lanterns, and harbour illumination create warm points of light against cool twilight. The Mediterranean's calm evening waters reflect the village lights, while the vertical architecture creates cascading patterns of illumination down to the sea.

What makes Cinque Terre special for blue-hour photography:

  • Village illumination - Dense clusters of lit windows create cascading light patterns down cliffsides
  • Harbour reflections - Calm Mediterranean waters mirror village lights and twilight colors
  • Vertical drama - Stacked houses create layered compositions from sea level to clifftop
  • Natural framing - Rocky coastlines and harbour walls provide strong compositional elements

Manarola delivers the iconic Cinque Terre blue hour scene—position at the eastern viewpoint to capture the entire village as house lights begin twinkling, balanced against deepening blue sky and reflected in the small harbour. The composition works from about 30 minutes before sunset through civil twilight's end. Vernazza's harbour offers intimate blue hour opportunities with fishing boats, the illuminated church of Santa Margherita, and restaurant lights reflecting in calm water. Riomaggiore's harbour marina creates beautiful light trails and reflections during the blue hour window. Monterosso's beach promenade and old town separation creates unique blue hour compositions with the medieval tower silhouetted against twilight. Portovenere's castle and Byron's Grotto take on dramatic character as twilight deepens and lighting activates. Timing is critical—arrive well before sunset to secure positions at popular viewpoints like Manarola's via Beccara platform, then capture the 20-30 minute window of perfect balance.

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72-hour requirements breakdown

What passed or failed, hour by hour
7matching hours in the next 95 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Rome
Blue Hour
Any
Blue Hour Quality
≥ 65.0%
Precipitation Chance
≤ 15.0%
Sat, May 23
15:0025%0%
16:0028%0%
17:0028%0%
18:0028%19%
19:0024%37%
20:0027%56%
21:0076%0%
22:0032%0%
23:0030%0%
Sun, May 24
24:0030%0%
01:0030%0%
02:0029%0%
03:0032%0%
04:0029%0%
05:0072%0%
06:0027%0%
07:0027%0%
08:0027%0%
09:0028%0%
10:0028%0%
11:0028%0%
12:0030%0%
13:0030%0%
14:0030%0%
15:0032%0%
16:0032%0%
17:0028%0%
18:0028%0%
19:0024%0%
20:0027%0%
21:0072%0%
22:0032%0%
23:0032%0%
Mon, May 25
24:0034%0%
01:0028%0%
02:0029%0%
03:0029%0%
04:0036%0%
05:0075%0%
06:0029%0%
07:0029%0%
08:0029%0%
09:0030%0%
10:0030%0%
11:0030%0%
12:0030%0%
13:0027%0%
14:0021%0%
15:0021%0%
16:0024%0%
17:0030%0%
18:0028%0%
19:0029%0%
20:0029%0%
21:0075%0%
22:0034%0%
23:0034%0%
Tue, May 26
24:0036%0%
01:0033%0%
02:0033%0%
03:0033%0%
04:0033%0%
05:0072%0%
06:0029%0%
07:0029%0%
08:0029%0%
09:0030%0%
10:0031%0%
11:0030%0%
12:0028%0%
13:0028%0%
14:0028%0%
15:0028%0%
16:0028%0%
17:0030%0%
18:0030%0%
19:0029%0%
20:0029%0%
21:0061%0%
22:006.6%0%
23:006.8%0%
Wed, May 27
24:007.5%0%
01:007.5%0%
02:007.6%0%
03:008.5%0%
04:0010%0%
05:0069%0%
06:002.9%0%
07:002.2%0%
08:002.1%0%
09:002.2%5.9%
10:002.9%12%
11:003.4%18%
12:003%19%
13:003%21%
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/Rome
Blue Hour
High Clouds
%
Low Clouds
%
Mid-Level Clouds
%
Relative Humidity
%
Solar Elevation
°
Total Cloud Coverage
%
Visibility
m
Wind Speed
m/s
Sun, May 24 Sunrise 05:46 Sunset 20:49
15:00
- 6% 0% 0% 73% 59° 6% 24135m 0.74m/s
16:00
- 7% 0% 0% 71% 49° 7% 24135m 0.88m/s
17:00
- 5% 0% 0% 69% 39° 5% 24134m 1.9m/s
18:00
- 0% 0% 0% 68% 28° 0% 24134m 2.7m/s
19:00
- 0% 0% 0% 67% 18° 0% 24134m 3.4m/s
20:00
- 0% 0% 0% 70% 7.3° 0% 24134m 4.1m/s
21:00
- 0% 0% 0% 76% -2.2° 0% 24135m 3.9m/s
22:00
- 5% 0% 0% 78% -11° 5% 24134m 3.5m/s
23:00
- 5% 0% 0% 79% -18° 5% 24135m 3.3m/s
Mon, May 25 Sunrise 05:46 Sunset 20:49
24:00
- 5% 0% 0% 80% -23° 5% 24134m 3.7m/s
01:00
- 100% 5% 0% 78% -25° 100% 24135m 5.2m/s
02:00
- 100% 5% 5% 75% -24° 100% 24135m 5.3m/s
03:00
- 90% 1% 5% 72% -21° 90% 24135m 4.9m/s
04:00
- 5% 0% 0% 70% -15° 5% 24135m 4.4m/s
05:00
- 5% 4% 4% 70% -7.5° 5% 24135m 4.1m/s
06:00
- 5% 4% 4% 71% 1.8° 5% 24134m 3.8m/s
07:00
- 5% 5% 1% 73% 11° 5% 24134m 3.5m/s
08:00
- 5% 4% 0% 74% 22° 5% 24134m 3m/s
09:00
- 5% 0% 0% 74% 33° 5% 24135m 2.2m/s
10:00
- 5% 0% 0% 70% 43° 5% 24134m 2m/s
11:00
- 5% 0% 0% 72% 53° 5% 24135m 3.9m/s
12:00
- 5% 0% 0% 73% 62° 5% 24135m 4.1m/s
13:00
- 5% 0% 0% 73% 67° 5% 24134m 3.4m/s
14:00
- 5% 10% 0% 75% 65° 14% 24135m 1.5m/s
15:00
- 5% 9% 0% 74% 59° 14% 24134m 0.71m/s
16:00
- 5% 9% 0% 69% 49° 13% 24134m 1.1m/s
17:00
- 5% 0% 0% 70% 39° 5% 24134m 2m/s
18:00
- 5% 0% 0% 71% 28° 5% 24134m 2.8m/s
19:00
- 5% 0% 0% 72% 18° 5% 24135m 4.2m/s
20:00
- 5% 0% 0% 75% 7.5° 5% 24134m 4.6m/s
21:00
- 5% 0% 0% 75% -2.1° 5% 24135m 4.4m/s
22:00
- 5% 0% 0% 75% -11° 5% 24134m 3.8m/s
23:00
- 5% 0% 0% 76% -18° 5% 24135m 3.2m/s
Tue, May 26 Sunrise 05:45 Sunset 20:50
24:00
- 5% 0% 0% 77% -22° 5% 24134m 3.3m/s
01:00
- 5% 0% 0% 78% -25° 5% 24134m 4.1m/s
02:00
- 5% 0% 0% 76% -24° 5% 24135m 4.4m/s
03:00
- 5% 0% 0% 75% -21° 5% 24134m 4.5m/s
04:00
- 5% 0% 0% 76% -15° 5% 24135m 4.4m/s
05:00
- 5% 0% 0% 75% -7.4° 5% 24134m 4.2m/s
06:00
- 5% 0% 0% 74% 1.9° 5% 24134m 3.7m/s
07:00
- 5% 0% 0% 75% 12° 5% 24134m 3m/s
08:00
- 5% 0% 0% 75% 22° 5% 24135m 2.3m/s
09:00
- 5% 0% 0% 74% 33° 5% 24134m 2m/s
10:00
- 5% 0% 0% 74% 43° 5% 24135m 0.89m/s
11:00
- 4% 0% 0% 70% 53° 4% 24134m 2.1m/s
12:00
- 1% 0% 0% 71% 62° 1% 24135m 2.9m/s
13:00
- 1% 0% 0% 71% 67° 1% 24134m 3m/s
14:00
- 4% 0% 0% 70% 65° 4% 24134m 3.7m/s
15:00
- 4% 0% 0% 71% 59° 4% 24134m 3.4m/s
16:00
- 4% 0% 0% 72% 50° 4% 24135m 3m/s
17:00
- 5% 0% 0% 72% 39° 5% 24135m 3.2m/s
18:00
- 5% 0% 0% 70% 28° 5% 24134m 3.9m/s
19:00
- 5% 0% 0% 71% 18° 5% 24135m 4.3m/s
20:00
- 5% 0% 0% 71% 7.6° 5% 24134m 4.9m/s
21:00
- 37% 0% 3% 75% -1.9° 37% 24134m 3.8m/s
22:00
- 68% 0% 5% 79% -10° 68% 24135m 2.7m/s
23:00
- 100% 0% 8% 83% -17° 100% 24135m 1.6m/s
Wed, May 27 Sunrise 05:45 Sunset 20:51
24:00
- 84% 0% 31% 84% -22° 92% 24135m 1.7m/s
01:00
- 67% 0% 54% 84% -24° 85% 24135m 1.8m/s
02:00
- 51% 0% 77% 85% -24° 77% 24135m 1.9m/s
03:00
- 35% 0% 51% 85% -21° 53% 24135m 2.1m/s
04:00
- 20% 0% 26% 84% -15° 29% 24135m 2.3m/s
05:00
- 5% 0% 0% 84% -7.2° 5% 24135m 2.5m/s
06:00
- 35% 0% 2% 83% 35% 24135m 2.5m/s
07:00
- 66% 0% 3% 82% 12° 66% 24135m 2.5m/s
08:00
- 96% 0% 4% 80% 22° 96% 24135m 2.5m/s
09:00
- 66% 0% 3% 80% 33° 66% 24135m 2.4m/s
10:00
- 35% 0% 1% 80% 43° 35% 24135m 2.4m/s
11:00
- 5% 0% 0% 80% 54° 5% 24135m 2.3m/s
12:00
- 5% 0% 0% 80% 62° 5% 24135m 2.3m/s
13:00
- 5% 0% 0% 80% 67° 5% 24135m 2.4m/s
14:00
- 6% 0% 0% 80% 66° 6% 24135m 2.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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