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Rule Fog Hunter

Ribeira Grande - Fog Hunter - Azores

Ribeira Grande, Azores, Portugal

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No Fog Hunter opportunities in the next 14 days

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Rule requirements (key thresholds)
Fog Probability · ≥ 75.0%

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

Most common blockers (next 72 hours)
Fog Probability 100% failing

Currently

Real-time conditions
Dewpoint Spread1.1°C
Visibility23285 (Clear)
Relative Humidity94%
Wind Speed5.9m/s (moderate winds)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Atlantic/Azores

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 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
0matching hours in the next 79 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Atlantic/Azores
Fog Probability
≥ 75.0%
Wed, Jul 8
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
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18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Jul 9
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
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13:000%
14:000%
15:000%
16:000%
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18:000%
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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%
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17:000%
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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 06:38 Sunset 21:21
13:00
3% 21°C 0mm 94% 0cm 69° 22°C 0.13mm 0.17kPa 23285m 8.2m/s 5.9m/s
14:00
5% 21°C 0mm 94% 0cm 74° 22°C 0.88mm 0.16kPa 8442m 8.4m/s 5.9m/s
15:00
8% 21°C 0mm 92% 0cm 69° 22°C 1.8mm 0.21kPa 14916m 8.6m/s 6m/s
16:00
5% 21°C 0mm 90% 0cm 60° 23°C 2.3mm 0.28kPa 16129m 8.5m/s 6.3m/s
17:00
3% 21°C 0mm 90% 0cm 49° 23°C 3.4mm 0.26kPa 24135m 8.3m/s 6.3m/s
18:00
0% 21°C 0mm 90% 0cm 37° 23°C 4.4mm 0.28kPa 24134m 7.9m/s 5.3m/s
19:00
1% 21°C 0.01mm 89% 0cm 25° 23°C 0.38mm 0.31kPa 24134m 5.7m/s 4m/s
20:00
2% 21°C 0mm 88% 0cm 14° 23°C 0.44mm 0.32kPa 24134m 3.5m/s 3m/s
21:00
3% 21°C 0.01mm 90% 0cm 3.1° 23°C 0.75mm 0.27kPa 22201m 2.3m/s 2.1m/s
22:00
2% 21°C 0.02mm 94% 0cm -7.1° 22°C 2.4mm 0.16kPa 5232m 1.9m/s 1.2m/s
23:00
1% 21°C 0.02mm 94% 0cm -16° 22°C 3.4mm 0.16kPa 21540m 2.3m/s 2.1m/s
Thu, Jul 9 Sunrise 06:39 Sunset 21:20
24:00
0% 20°C 0.06mm 96% 0cm -23° 21°C 4.9mm 0.1kPa 7361m 4.3m/s 4.3m/s
01:00
0% 20°C 0.03mm 96% 0cm -27° 21°C 1.6mm 0.09kPa 21443m 6.4m/s 5.6m/s
02:00
0% 20°C 0.05mm 95% 0cm -29° 20°C 3.8mm 0.11kPa 8883m 7.6m/s 5.8m/s
03:00
0% 20°C 0.05mm 94% 0cm -28° 20°C 4.7mm 0.14kPa 16692m 8.7m/s 8m/s
04:00
0% 19°C 0.05mm 93% 0cm -23° 20°C 5.9mm 0.17kPa 7460m 9m/s 8.7m/s
05:00
0% 19°C 0.23mm 93% 0cm -16° 20°C 6.9mm 0.16kPa 7448m 9.7m/s 9.1m/s
06:00
0% 19°C 0.19mm 93% 0cm -7.1° 20°C 7.8mm 0.17kPa 18967m 11m/s 11m/s
07:00
0% 18°C 0.13mm 89% 0cm 3.1° 20°C 0.5mm 0.26kPa 22571m 11m/s 11m/s
08:00
0% 17°C 0.07mm 85% 0cm 14° 20°C 0.88mm 0.35kPa 24134m 11m/s 11m/s
09:00
0% 17°C 0.03mm 81% 0cm 25° 20°C 0.94mm 0.45kPa 24135m 10m/s 10m/s
10:00
0% 16°C 0mm 79% 0cm 37° 20°C 0.94mm 0.5kPa 24134m 10m/s 10m/s
11:00
0% 16°C 0mm 76% 0cm 48° 20°C 0.94mm 0.57kPa 24135m 9.7m/s 10m/s
12:00
0% 15°C 0mm 71% 0cm 60° 20°C 0.94mm 0.68kPa 24135m 10m/s 9.9m/s
13:00
15% 14°C 0mm 68% 0cm 69° 20°C 0mm 0.75kPa 24134m 8.9m/s 9.3m/s
14:00
29% 14°C 0mm 68% 0cm 74° 20°C 0mm 0.74kPa 24135m 8.8m/s 8.7m/s
15:00
44% 14°C 0mm 67% 0cm 69° 20°C 0mm 0.76kPa 24135m 9.2m/s 8.7m/s
16:00
48% 14°C 0mm 67% 0cm 60° 20°C 0mm 0.77kPa 24134m 9.4m/s 9m/s
17:00
52% 13°C 0mm 67% 0cm 48° 20°C 0mm 0.76kPa 24135m 9.8m/s 9.4m/s
18:00
56% 14°C 0mm 68% 0cm 37° 20°C 0mm 0.73kPa 24135m 10m/s 9.5m/s
19:00
62% 14°C 0mm 68% 0cm 25° 20°C 0mm 0.73kPa 24134m 10m/s 9.2m/s
20:00
68% 14°C 0mm 68% 0cm 14° 20°C 0mm 0.73kPa 24135m 9.7m/s 9m/s
21:00
74% 14°C 0mm 69% 0cm 20°C 0mm 0.72kPa 24135m 9.4m/s 8.5m/s
22:00
75% 14°C 0mm 69% 0cm -7.2° 20°C 0mm 0.71kPa 24135m 8.4m/s 7.8m/s
23:00
76% 14°C 0mm 69% 0cm -16° 20°C 0mm 0.7kPa 24135m 7.7m/s 6.9m/s
Fri, Jul 10 Sunrise 06:39 Sunset 21:20
24:00
77% 14°C 0mm 70% 0cm -23° 20°C 0mm 0.69kPa 24135m 6.8m/s 6m/s
01:00
73% 14°C 0mm 70% 0cm -28° 20°C 0mm 0.68kPa 24135m 6.1m/s 5.2m/s
02:00
70% 14°C 0mm 71% 0cm -29° 20°C 0mm 0.67kPa 24135m 5.6m/s 4.8m/s
03:00
66% 14°C 0mm 71% 0cm -28° 20°C 0mm 0.66kPa 24134m 5.2m/s 4.4m/s
04:00
65% 14°C 0mm 72% 0cm -23° 20°C 0mm 0.65kPa 24135m 4.9m/s 3.9m/s
05:00
64% 15°C 0mm 74% 0cm -16° 19°C 0.06mm 0.59kPa 24134m 4.8m/s 4m/s
06:00
63% 15°C 0mm 74% 0cm -7.3° 20°C 0.06mm 0.59kPa 24135m 6.2m/s 5.1m/s
07:00
60% 14°C 0mm 70% 0cm 20°C 0mm 0.7kPa 24134m 7m/s 6.4m/s
08:00
57% 14°C 0mm 70% 0cm 14° 20°C 0mm 0.7kPa 24134m 6.4m/s 5.5m/s
09:00
54% 14°C 0.01mm 70% 0cm 25° 20°C 0mm 0.69kPa 24135m 6.5m/s 5.8m/s
10:00
50% 15°C 0mm 71% 0cm 37° 20°C 0mm 0.67kPa 24134m 5.5m/s 5m/s
11:00
47% 15°C 0mm 71% 0cm 48° 20°C 0mm 0.68kPa 24134m 5.2m/s 4.5m/s
12:00
43% 15°C 0mm 70% 0cm 60° 20°C 0mm 0.7kPa 24134m 4.7m/s 4.1m/s
13:00
37% 14°C 0mm 69% 0cm 69° 20°C 0mm 0.73kPa 24135m 4.1m/s 3.7m/s
14:00
32% 14°C 0mm 69% 0cm 74° 20°C 0mm 0.74kPa 24134m 3.7m/s 3.4m/s
15:00
26% 14°C 0mm 69% 0cm 69° 20°C 0mm 0.75kPa 24134m 3.2m/s 2.8m/s
16:00
26% 14°C 0mm 68% 0cm 60° 20°C 0mm 0.76kPa 24135m 2.7m/s 2.3m/s
17:00
26% 14°C 0mm 68% 0cm 48° 20°C 0mm 0.76kPa 24135m 2.6m/s 2.3m/s
18:00
26% 15°C 0mm 69% 0cm 37° 21°C 0mm 0.76kPa 24135m 3m/s 2.4m/s
19:00
34% 14°C 0.003mm 70% 0cm 25° 20°C 0mm 0.68kPa 24135m 3.1m/s 2.8m/s
20:00
42% 14°C 0.007mm 72% 0cm 14° 19°C 0mm 0.6kPa 24135m 3.3m/s 3.2m/s
21:00
50% 14°C 0.01mm 74% 0cm 18°C 0mm 0.54kPa 24135m 3.4m/s 3.6m/s
22:00
47% 13°C 0.007mm 75% 0cm -7.2° 18°C 0mm 0.52kPa 24135m 3.4m/s 3.5m/s
23:00
43% 13°C 0.003mm 75% 0cm -16° 18°C 0mm 0.51kPa 24135m 3.4m/s 3.4m/s
Sat, Jul 11 Sunrise 06:40 Sunset 21:20
24:00
40% 13°C 0mm 75% 0cm -23° 18°C 0mm 0.5kPa 24135m 3.3m/s 3.4m/s
01:00
40% 13°C 0mm 73% 0cm -28° 18°C 0mm 0.54kPa 24135m 3.1m/s 3.2m/s
02:00
39% 13°C 0mm 72% 0cm -29° 18°C 0mm 0.58kPa 24135m 2.9m/s 3.1m/s
03:00
39% 12°C 0mm 70% 0cm -28° 18°C 0mm 0.62kPa 24135m 2.7m/s 2.9m/s
04:00
35% 12°C 0mm 66% 0cm -23° 18°C 0mm 0.71kPa 24135m 2.5m/s 2.8m/s
05:00
32% 11°C 0mm 62% 0cm -16° 18°C 0mm 0.81kPa 24135m 2.3m/s 2.7m/s
06:00
28% 10°C 0mm 58% 0cm -7.4° 19°C 0mm 0.91kPa 24135m 2m/s 2.7m/s
07:00
26% 9.8°C 0mm 56% 0cm 2.9° 19°C 0mm 0.96kPa 24135m 2.2m/s 2.8m/s
08:00
24% 9.5°C 0mm 54% 0cm 14° 19°C 0mm 1kPa 24135m 2.3m/s 3m/s
09:00
22% 9°C 0mm 52% 0cm 25° 19°C 0mm 1.1kPa 24135m 2.4m/s 3.2m/s
10:00
21% 9.1°C 0mm 52% 0cm 37° 19°C 0mm 1.1kPa 24135m 2.4m/s 3.2m/s
11:00
20% 9.2°C 0mm 52% 0cm 48° 19°C 0mm 1.1kPa 24135m 2.4m/s 3.2m/s
12:00
19% 9.3°C 0mm 52% 0cm 59° 20°C 0mm 1.1kPa 24135m 2.4m/s 3.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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