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Rule Fog Hunter

Lagoa do Fogo - 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 Spread4.9°C
Visibility24134 (Clear)
Relative Humidity72%
Wind Speed2.5m/s (calm conditions)

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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Atlantic/Azores
Fog Probability
≥ 75.0%
Fri, May 15
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
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16:000%
17:000%
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20:000%
21:000%
22:000%
23:000%
Sat, May 16
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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15:000%
16:000%
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23:000%
Sun, May 17
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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23:000%
Mon, May 18
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
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21:000%
22:000%
23:000%
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
Sat, May 16 Sunrise 06:42 Sunset 21:00
02:00
0% 11°C 0mm 72% 0cm -32° 16°C 0mm 0.49kPa 24134m 3.1m/s 2.5m/s
03:00
0% 11°C 0mm 75% 0cm -30° 15°C 0mm 0.44kPa 24134m 2.4m/s 2m/s
04:00
0% 11°C 0mm 76% 0cm -25° 15°C 0mm 0.41kPa 24135m 2.9m/s 2.4m/s
05:00
0% 11°C 0mm 77% 0cm -17° 15°C 0mm 0.4kPa 24134m 1.7m/s 1.4m/s
06:00
0% 11°C 0mm 78% 0cm -8.1° 15°C 0mm 0.38kPa 24135m 2.9m/s 2.4m/s
07:00
0% 11°C 0mm 77% 0cm 2.6° 15°C 0mm 0.39kPa 24135m 3.5m/s 2.8m/s
08:00
0% 11°C 0mm 77% 0cm 14° 15°C 0mm 0.4kPa 24135m 2.9m/s 2.4m/s
09:00
0% 11°C 0mm 77% 0cm 25° 15°C 0mm 0.41kPa 24134m 2.6m/s 2.2m/s
10:00
0% 11°C 0mm 77% 0cm 37° 15°C 0mm 0.4kPa 24135m 2.5m/s 2.1m/s
11:00
0% 11°C 0mm 77% 0cm 48° 15°C 0mm 0.4kPa 24135m 2.8m/s 2.4m/s
12:00
0% 11°C 0mm 76% 0cm 59° 15°C 0mm 0.41kPa 24135m 3.2m/s 2.9m/s
13:00
1% 11°C 0mm 76% 0cm 68° 16°C 0mm 0.43kPa 24134m 3.8m/s 3.3m/s
14:00
1% 12°C 0mm 76% 0cm 71° 16°C 0mm 0.43kPa 24135m 4.4m/s 3.8m/s
15:00
2% 12°C 0mm 75% 0cm 66° 16°C 0mm 0.44kPa 24134m 4.7m/s 4.1m/s
16:00
1% 11°C 0mm 75% 0cm 56° 16°C 0mm 0.46kPa 24134m 4.4m/s 3.7m/s
17:00
1% 11°C 0mm 74% 0cm 45° 16°C 0mm 0.46kPa 24134m 4.4m/s 3.7m/s
18:00
0% 11°C 0mm 75% 0cm 33° 16°C 0mm 0.46kPa 24135m 4.4m/s 3.7m/s
19:00
0% 12°C 0mm 76% 0cm 22° 16°C 0mm 0.44kPa 24134m 5.1m/s 4.4m/s
20:00
0% 12°C 0mm 76% 0cm 10° 16°C 0mm 0.44kPa 24134m 5.6m/s 4.8m/s
21:00
0% 12°C 0mm 77% 0cm -0.31° 16°C 0mm 0.42kPa 24135m 5.7m/s 4.7m/s
22:00
0% 12°C 0mm 80% 0cm -11° 16°C 0mm 0.36kPa 24134m 5.4m/s 3.6m/s
23:00
0% 13°C 0mm 83% 0cm -20° 16°C 0mm 0.31kPa 24135m 5.6m/s 3.9m/s
Sun, May 17 Sunrise 06:41 Sunset 21:01
24:00
0% 13°C 0mm 85% 0cm -27° 16°C 0mm 0.28kPa 24135m 5.8m/s 4m/s
01:00
0% 13°C 0mm 82% 0cm -31° 16°C 0mm 0.33kPa 24135m 6.1m/s 4.6m/s
02:00
0% 13°C 0mm 82% 0cm -32° 16°C 0mm 0.33kPa 24135m 7m/s 5.9m/s
03:00
0% 13°C 0mm 82% 0cm -30° 16°C 0mm 0.33kPa 24135m 7.1m/s 6m/s
04:00
0% 13°C 0mm 82% 0cm -25° 16°C 0mm 0.32kPa 24135m 6.9m/s 6m/s
05:00
0% 13°C 0mm 84% 0cm -17° 16°C 0mm 0.29kPa 24135m 6.9m/s 6m/s
06:00
0% 13°C 0mm 85% 0cm -7.9° 16°C 0mm 0.27kPa 24134m 7.1m/s 6.3m/s
07:00
0% 14°C 0mm 87% 0cm 2.7° 16°C 0mm 0.24kPa 24134m 7.6m/s 6.6m/s
08:00
0% 14°C 0mm 87% 0cm 14° 16°C 0mm 0.23kPa 24134m 7.7m/s 6.5m/s
09:00
0% 14°C 0mm 87% 0cm 25° 16°C 0mm 0.23kPa 24135m 8m/s 6.5m/s
10:00
0% 14°C 0mm 88% 0cm 37° 16°C 0mm 0.23kPa 24134m 8.4m/s 6.5m/s
11:00
1% 14°C 0mm 88% 0cm 48° 16°C 0mm 0.22kPa 24134m 8.4m/s 6.4m/s
12:00
1% 14°C 0mm 88% 0cm 59° 16°C 0mm 0.22kPa 24134m 8.6m/s 6.5m/s
13:00
8% 15°C 0mm 88% 0cm 68° 16°C 0mm 0.21kPa 24135m 8.5m/s 6.7m/s
14:00
16% 15°C 0mm 89% 0cm 71° 16°C 0mm 0.21kPa 24135m 9.3m/s 7.1m/s
15:00
23% 15°C 0mm 89% 0cm 66° 17°C 0mm 0.21kPa 24134m 9.8m/s 7.4m/s
16:00
21% 15°C 0mm 89% 0cm 56° 17°C 0mm 0.21kPa 24134m 11m/s 7.7m/s
17:00
20% 15°C 0mm 89% 0cm 45° 17°C 0mm 0.21kPa 24135m 11m/s 7.7m/s
18:00
18% 15°C 0mm 88% 0cm 33° 17°C 0mm 0.22kPa 24135m 11m/s 7.8m/s
19:00
20% 15°C 0mm 89% 0cm 22° 17°C 0mm 0.21kPa 24135m 11m/s 7.8m/s
20:00
23% 15°C 0mm 90% 0cm 10° 17°C 0mm 0.19kPa 24134m 11m/s 7.8m/s
21:00
25% 15°C 0mm 91% 0cm -0.04° 17°C 0mm 0.17kPa 24135m 11m/s 7.7m/s
22:00
20% 15°C 0mm 91% 0cm -11° 17°C 0mm 0.17kPa 24134m 11m/s 7.8m/s
23:00
14% 15°C 0mm 91% 0cm -19° 17°C 0mm 0.17kPa 24134m 12m/s 7.8m/s
Mon, May 18 Sunrise 06:41 Sunset 21:01
24:00
9% 15°C 0mm 91% 0cm -26° 17°C 0mm 0.17kPa 24135m 12m/s 8.3m/s
01:00
8% 15°C 0mm 91% 0cm -31° 17°C 0mm 0.17kPa 24134m 13m/s 8.7m/s
02:00
7% 15°C 0mm 92% 0cm -32° 17°C 0mm 0.16kPa 24134m 13m/s 8.6m/s
03:00
6% 16°C 0.07mm 93% 0cm -30° 17°C 0.06mm 0.14kPa 24134m 13m/s 8.4m/s
04:00
4% 16°C 0.14mm 94% 0cm -25° 17°C 0.19mm 0.11kPa 24134m 13m/s 8.6m/s
05:00
2% 16°C 0.11mm 95% 0cm -17° 17°C 0.31mm 0.1kPa 23181m 13m/s 8.1m/s
06:00
0% 16°C 0.08mm 96% 0cm -7.7° 17°C 0.44mm 0.09kPa 24135m 12m/s 7.1m/s
07:00
11% 15°C 0.05mm 91% 0cm 2.8° 17°C 0.29mm 0.17kPa 24135m 10m/s 6.2m/s
08:00
23% 14°C 0.03mm 86% 0cm 14° 16°C 0.15mm 0.26kPa 24135m 7.8m/s 5.3m/s
09:00
34% 13°C 0mm 81% 0cm 25° 16°C 0mm 0.34kPa 24135m 5.6m/s 4.5m/s
10:00
35% 13°C 0mm 81% 0cm 37° 16°C 0mm 0.34kPa 24135m 5.6m/s 4.5m/s
11:00
37% 13°C 0mm 81% 0cm 49° 16°C 0mm 0.34kPa 24135m 5.7m/s 4.5m/s
12:00
38% 13°C 0mm 81% 0cm 59° 16°C 0mm 0.34kPa 24135m 5.7m/s 4.6m/s
13:00
49% 13°C 0mm 83% 0cm 68° 16°C 0mm 0.3kPa 24135m 5.6m/s 4.5m/s
14:00
60% 13°C 0mm 85% 0cm 71° 15°C 0mm 0.25kPa 24135m 5.5m/s 4.4m/s
15:00
71% 13°C 0mm 88% 0cm 66° 15°C 0mm 0.21kPa 24135m 5.5m/s 4.3m/s
16:00
66% 13°C 0mm 88% 0cm 56° 15°C 0mm 0.21kPa 24135m 5.6m/s 4.4m/s
17:00
62% 13°C 0mm 88% 0cm 45° 15°C 0mm 0.2kPa 24135m 5.7m/s 4.5m/s
18:00
57% 13°C 0mm 88% 0cm 34° 15°C 0mm 0.2kPa 24135m 5.9m/s 4.6m/s
19:00
52% 13°C 0mm 88% 0cm 22° 15°C 0mm 0.21kPa 24135m 6.2m/s 4.7m/s
20:00
46% 13°C 0mm 87% 0cm 11° 15°C 0mm 0.22kPa 24135m 6.5m/s 4.9m/s
21:00
41% 13°C 0mm 87% 0cm 0.11° 15°C 0mm 0.22kPa 24135m 6.8m/s 5m/s
22:00
35% 13°C 0mm 86% 0cm -10° 15°C 0mm 0.23kPa 24135m 7.1m/s 5.2m/s
23:00
28% 12°C 0mm 86% 0cm -19° 15°C 0mm 0.24kPa 24135m 7.4m/s 5.3m/s
Tue, May 19 Sunrise 06:40 Sunset 21:02
24:00
22% 12°C 0mm 85% 0cm -26° 15°C 0mm 0.25kPa 24135m 7.7m/s 5.5m/s
01:00
16% 13°C 0.01mm 87% 0cm -31° 15°C 0mm 0.22kPa 24135m 8.5m/s 5.9m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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