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Rule Fog Hunter

Sete Cidades - Fog Hunter - Azores

Ponta Delgada, Azores, Portugal

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread4.1°C
Visibility24134 (Clear)
Relative Humidity78%
Wind Speed3.7m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Atlantic/Azores
fog weather icon
Next opportunity
Dense Fog
Sete Cidades
Tomorrow · 02:00–05:00 · 3h window
High confidence
76%
🌫️Fog Probability86%
Dewpoint Spread: 0.5°C
Visibility: 6830 (Moderate)
Relative Humidity: 97%
Wind Speed: 3.4m/s (calm conditions)

What this forecast looks for

Plain-language explanation from the rule

This forecast predicts when volcanic topography and Atlantic weather create dramatic fog conditions across the Azores archipelago. We track humidity, temperature inversions, wind patterns, and elevation to identify when fog fills volcanic calderas while crater rims emerge above, or when ocean mist wraps coastal peaks.

The Azores' volcanic landscape creates natural bowls—massive calderas like Sete Cidades and Lagoa do Fogo—that trap fog and cloud inversions while higher rim viewpoints stay clear. The islands' mid-Atlantic position means frequent interaction with marine air masses, creating the notorious "four seasons in one day" weather that produces ever-changing fog conditions.

What makes Azores fog photography special:

  • Crater inversions - Sete Cidades caldera fills with fog while rim viewpoints offer views of twin lakes emerging from mist
  • Volcanic drama - Pico mountain's 2,351-metre peak pierces clouds, visible from neighboring islands when weather clears
  • Geothermal atmosphere - Furnas valley combines volcanic steam with natural fog, creating otherworldly layered mist
  • Hydrangea tunnels - Blue and pink hydrangeas lining roads disappear into fog during summer flowering season

Miradouro da Vista do Rei overlooking Sete Cidades becomes magical when fog partially fills the caldera—arrive at dawn to catch twin lakes emerging from white mist. Lagoa do Fogo's crater rim provides spectacular inversions when fog fills the interior while you stand in sunshine. Furnas valley combines natural fog with geothermal steam rising from fumaroles, creating complex layers especially atmospheric in early morning. From Faial island, Pico mountain appears and disappears through ocean clouds. The hydrangea-lined roads of São Miguel take on fairy-tale quality when fog drifts through in June and July. Best conditions occur when Atlantic weather systems move through, typically autumn through spring.

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72-hour requirements breakdown

What passed or failed, hour by hour
3matching hours in the next 80 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Atlantic/Azores
Fog Probability
≥ 75.0%
Wed, Jul 8
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Jul 9
24:0065%
01:0047%
02:0086%
03:0086%
04:0086%
05:0055%
06:0033%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Fri, Jul 10
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Sat, Jul 11
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog 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
Atlantic/Azores
Clear Sky Probability (Ensemble)
%
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Solar Elevation
°
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Wed, Jul 8 Sunrise 06:28 Sunset 21:06
13:00
44% 18°C 0mm 78% 0cm 72° 22°C 0mm 0.58kPa 24134m 4.7m/s 3.7m/s
14:00
25% 18°C 0mm 80% 0cm 74° 22°C 0mm 0.53kPa 24135m 4.6m/s 3.5m/s
15:00
7% 19°C 0mm 82% 0cm 68° 22°C 0mm 0.46kPa 24135m 4.2m/s 3m/s
16:00
9% 19°C 0mm 84% 0cm 58° 22°C 0mm 0.42kPa 24135m 4.5m/s 3m/s
17:00
12% 19°C 0mm 85% 0cm 46° 22°C 0mm 0.41kPa 24135m 4.6m/s 2.9m/s
18:00
14% 20°C 0mm 84% 0cm 34° 23°C 0.06mm 0.43kPa 24134m 5m/s 3.2m/s
19:00
39% 20°C 0mm 86% 0cm 23° 23°C 0.06mm 0.39kPa 24134m 5.5m/s 3.8m/s
20:00
63% 20°C 0mm 89% 0cm 11° 22°C 0.06mm 0.29kPa 24134m 5.2m/s 3.7m/s
21:00
88% 21°C 0mm 92% 0cm 0.82° 22°C 0.06mm 0.2kPa 24135m 4.5m/s 3m/s
22:00
81% 21°C 0mm 94% 0cm -9.5° 22°C 0.06mm 0.15kPa 24134m 4.1m/s 2.8m/s
23:00
73% 21°C 0mm 95% 0cm -18° 21°C 0.06mm 0.13kPa 12840m 4.3m/s 3m/s
Thu, Jul 9 Sunrise 06:29 Sunset 21:06
24:00
66% 21°C 0mm 96% 0cm -25° 21°C 0.06mm 0.11kPa 7673m 5.1m/s 3.4m/s
01:00
55% 21°C 0mm 97% 0cm -29° 21°C 0.06mm 0.08kPa 7268m 5.6m/s 3.6m/s
02:00
45% 21°C 0mm 97% 0cm -30° 21°C 0.13mm 0.07kPa 6830m 5.4m/s 3.4m/s
03:00
34% 21°C 0mm 97% 0cm -28° 21°C 0.13mm 0.07kPa 7266m 4.8m/s 3.2m/s
04:00
34% 21°C 0mm 97% 0cm -22° 21°C 0.19mm 0.07kPa 3686m 5m/s 3.4m/s
05:00
34% 21°C 0mm 97% 0cm -15° 21°C 0.31mm 0.07kPa 1989m 5.3m/s 3.4m/s
06:00
34% 21°C 0mm 97% 0cm -5.6° 21°C 0.94mm 0.07kPa 6825m 5.9m/s 3.6m/s
07:00
30% 20°C 0mm 98% 0cm 4.8° 21°C 1.7mm 0.06kPa 1035m 6.1m/s 3.4m/s
08:00
25% 20°C 0mm 95% 0cm 16° 21°C 3.7mm 0.13kPa 556m 6.6m/s 3.4m/s
09:00
21% 20°C 0mm 92% 0cm 27° 21°C 4.8mm 0.2kPa 19117m 7.2m/s 3.6m/s
10:00
15% 20°C 0mm 92% 0cm 39° 22°C 5.8mm 0.2kPa 13100m 6.9m/s 3.8m/s
11:00
8% 20°C 0mm 93% 0cm 51° 21°C 7.6mm 0.19kPa 354m 5.9m/s 3.7m/s
12:00
2% 20°C 0.01mm 90% 0cm 62° 21°C 7.8mm 0.25kPa 24135m 4.6m/s 4.2m/s
13:00
1% 20°C 0.01mm 88% 0cm 71° 22°C 0.06mm 0.31kPa 20402m 4.7m/s 4.9m/s
14:00
1% 20°C 0mm 86% 0cm 74° 22°C 0.13mm 0.37kPa 19548m 4m/s 3.9m/s
15:00
0% 19°C 0.01mm 88% 0cm 68° 21°C 0.38mm 0.29kPa 19897m 6.6m/s 6.3m/s
16:00
0% 19°C 0mm 89% 0cm 58° 21°C 0.44mm 0.26kPa 9328m 8.4m/s 7.4m/s
17:00
0% 18°C 0mm 88% 0cm 46° 20°C 0.44mm 0.27kPa 24135m 9.7m/s 8.3m/s
18:00
0% 18°C 0mm 86% 0cm 34° 20°C 0.5mm 0.33kPa 24135m 9.7m/s 8.2m/s
19:00
12% 17°C 0mm 84% 0cm 23° 20°C 0mm 0.38kPa 24134m 9.9m/s 8.2m/s
20:00
24% 17°C 0mm 83% 0cm 11° 20°C 0.06mm 0.4kPa 24135m 9.9m/s 8.2m/s
21:00
36% 17°C 0mm 83% 0cm 0.77° 20°C 0.06mm 0.39kPa 24135m 10m/s 8.3m/s
22:00
38% 16°C 0mm 82% 0cm -9.6° 19°C 0.13mm 0.41kPa 24135m 10m/s 8.3m/s
23:00
41% 16°C 0mm 82% 0cm -18° 19°C 0.25mm 0.4kPa 24135m 9.9m/s 8m/s
Fri, Jul 10 Sunrise 06:29 Sunset 21:06
24:00
43% 16°C 0mm 80% 0cm -25° 19°C 0.25mm 0.45kPa 24135m 9.1m/s 7.5m/s
01:00
52% 15°C 0mm 77% 0cm -29° 19°C 0.06mm 0.5kPa 24135m 8.6m/s 7.2m/s
02:00
61% 15°C 0mm 76% 0cm -30° 19°C 0.06mm 0.52kPa 24135m 8.5m/s 7.3m/s
03:00
70% 14°C 0mm 74% 0cm -28° 18°C 0.06mm 0.55kPa 24134m 8.3m/s 7.5m/s
04:00
68% 13°C 0mm 72% 0cm -22° 18°C 0.06mm 0.59kPa 24135m 8.3m/s 7m/s
05:00
67% 13°C 0mm 72% 0cm -15° 18°C 0.06mm 0.57kPa 24134m 8.8m/s 6.9m/s
06:00
65% 13°C 0.01mm 72% 0cm -5.7° 18°C 0.06mm 0.58kPa 24135m 8.6m/s 6.6m/s
07:00
56% 13°C 0.01mm 70% 0cm 4.7° 18°C 0mm 0.63kPa 24134m 8.5m/s 6.9m/s
08:00
48% 13°C 0.02mm 73% 0cm 16° 18°C 0mm 0.57kPa 24134m 8.5m/s 6.9m/s
09:00
39% 13°C 0mm 72% 0cm 27° 18°C 0.06mm 0.59kPa 24135m 8.1m/s 6.3m/s
10:00
40% 12°C 0mm 65% 0cm 39° 19°C 0.06mm 0.77kPa 24134m 7.9m/s 6.3m/s
11:00
40% 13°C 0mm 69% 0cm 51° 19°C 0.06mm 0.69kPa 24134m 7.4m/s 5.6m/s
12:00
41% 14°C 0mm 68% 0cm 62° 20°C 0.13mm 0.72kPa 24134m 7m/s 5.7m/s
13:00
45% 14°C 0mm 66% 0cm 71° 20°C 0.06mm 0.78kPa 24135m 6.4m/s 5.4m/s
14:00
49% 13°C 0mm 66% 0cm 74° 20°C 0.06mm 0.81kPa 24134m 6.1m/s 5.1m/s
15:00
53% 14°C 0mm 66% 0cm 68° 20°C 0.06mm 0.78kPa 24134m 6.1m/s 5.5m/s
16:00
54% 14°C 0mm 65% 0cm 58° 20°C 0.06mm 0.82kPa 24135m 6.2m/s 5.7m/s
17:00
54% 13°C 0mm 64% 0cm 46° 20°C 0.06mm 0.85kPa 24135m 6.2m/s 5.6m/s
18:00
55% 13°C 0mm 64% 0cm 34° 20°C 0.06mm 0.84kPa 24135m 6.2m/s 5.5m/s
19:00
59% 13°C 0.003mm 66% 0cm 23° 20°C 0.04mm 0.78kPa 24135m 6.1m/s 5.2m/s
20:00
63% 14°C 0.007mm 68% 0cm 11° 20°C 0.02mm 0.73kPa 24135m 6.1m/s 5m/s
21:00
67% 14°C 0.01mm 70% 0cm 0.72° 19°C 0mm 0.67kPa 24135m 6m/s 4.7m/s
22:00
67% 14°C 0.007mm 70% 0cm -9.6° 19°C 0.02mm 0.67kPa 24135m 6.2m/s 4.9m/s
23:00
66% 14°C 0.003mm 70% 0cm -18° 19°C 0.04mm 0.67kPa 24135m 6.4m/s 5.1m/s
Sat, Jul 11 Sunrise 06:30 Sunset 21:05
24:00
66% 14°C 0mm 70% 0cm -25° 19°C 0.06mm 0.67kPa 24135m 6.5m/s 5.3m/s
01:00
66% 14°C 0.003mm 69% 0cm -29° 19°C 0.04mm 0.7kPa 24135m 6.5m/s 5.3m/s
02:00
65% 13°C 0.007mm 68% 0cm -30° 19°C 0.02mm 0.73kPa 24135m 6.4m/s 5.3m/s
03:00
65% 13°C 0.01mm 67% 0cm -28° 20°C 0mm 0.75kPa 24135m 6.3m/s 5.4m/s
04:00
61% 13°C 0.007mm 66% 0cm -23° 20°C 0.02mm 0.78kPa 24135m 6.4m/s 5.5m/s
05:00
56% 14°C 0.003mm 66% 0cm -15° 20°C 0.04mm 0.8kPa 24135m 6.4m/s 5.7m/s
06:00
52% 14°C 0mm 66% 0cm -5.9° 20°C 0.06mm 0.82kPa 24135m 6.4m/s 5.9m/s
07:00
50% 14°C 0mm 66% 0cm 4.6° 20°C 0.06mm 0.83kPa 24135m 6.6m/s 6.2m/s
08:00
48% 14°C 0mm 65% 0cm 16° 21°C 0.06mm 0.84kPa 24135m 6.8m/s 6.5m/s
09:00
46% 14°C 0mm 65% 0cm 27° 21°C 0.06mm 0.85kPa 24135m 6.9m/s 6.7m/s
10:00
44% 14°C 0mm 65% 0cm 39° 21°C 0.06mm 0.85kPa 24135m 7.4m/s 7.2m/s
11:00
43% 14°C 0mm 65% 0cm 51° 21°C 0.06mm 0.84kPa 24135m 7.9m/s 7.7m/s
12:00
41% 14°C 0mm 65% 0cm 62° 21°C 0.06mm 0.84kPa 24135m 8.3m/s 8.1m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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