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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 Spread1.6°C
Visibility24135 (Clear)
Relative Humidity90%
Wind Speed7.4m/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 80 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Atlantic/Azores
Fog Probability
≥ 75.0%
Sun, May 17
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%
Mon, May 18
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%
Tue, May 19
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%
Wed, May 20
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
Sun, May 17 Sunrise 06:41 Sunset 21:01
13:00
2% 15°C 0mm 90% 0cm 68° 17°C 0mm 0.19kPa 24135m 9.5m/s 7.4m/s
14:00
3% 15°C 0mm 90% 0cm 71° 17°C 0mm 0.19kPa 24135m 10m/s 7.6m/s
15:00
5% 15°C 0mm 90% 0cm 66° 17°C 0mm 0.19kPa 24134m 11m/s 7.9m/s
16:00
4% 15°C 0mm 90% 0cm 56° 17°C 0mm 0.18kPa 24134m 12m/s 8.2m/s
17:00
2% 16°C 0mm 91% 0cm 45° 17°C 0mm 0.17kPa 24134m 12m/s 8.2m/s
18:00
1% 16°C 0mm 91% 0cm 33° 17°C 0mm 0.17kPa 24135m 12m/s 8.3m/s
19:00
1% 16°C 0mm 91% 0cm 22° 17°C 0mm 0.17kPa 24134m 12m/s 8.4m/s
20:00
0% 16°C 0.01mm 91% 0cm 10° 17°C 0mm 0.17kPa 24135m 13m/s 8.5m/s
21:00
0% 16°C 0mm 91% 0cm -0.04° 17°C 0mm 0.17kPa 24135m 13m/s 8.8m/s
22:00
0% 16°C 0mm 91% 0cm -11° 17°C 0mm 0.17kPa 24135m 13m/s 8.8m/s
23:00
0% 16°C 0mm 92% 0cm -19° 17°C 0mm 0.15kPa 24134m 14m/s 9.2m/s
Mon, May 18 Sunrise 06:41 Sunset 21:01
24:00
0% 16°C 0mm 92% 0cm -26° 17°C 0mm 0.14kPa 24135m 14m/s 8.9m/s
01:00
4% 16°C 0mm 92% 0cm -31° 17°C 0mm 0.14kPa 24134m 14m/s 9.2m/s
02:00
7% 16°C 0.15mm 94% 0cm -32° 17°C 0.13mm 0.11kPa 24135m 14m/s 9.2m/s
03:00
11% 16°C 1mm 95% 0cm -30° 17°C 0.44mm 0.1kPa 12353m 14m/s 8.9m/s
04:00
7% 16°C 0.14mm 96% 0cm -25° 17°C 1.1mm 0.08kPa 24135m 14m/s 8.3m/s
05:00
4% 16°C 0mm 96% 0cm -17° 17°C 1.2mm 0.07kPa 24134m 9.4m/s 7.1m/s
06:00
0% 16°C 0mm 93% 0cm -7.7° 17°C 1.3mm 0.14kPa 24135m 8m/s 5.7m/s
07:00
19% 15°C 0mm 90% 0cm 2.8° 17°C 0mm 0.18kPa 24134m 6.3m/s 4.5m/s
08:00
38% 15°C 0mm 90% 0cm 14° 16°C 0mm 0.19kPa 24135m 6.1m/s 4.1m/s
09:00
57% 15°C 0mm 89% 0cm 25° 16°C 0mm 0.2kPa 24135m 6.3m/s 4.6m/s
10:00
64% 15°C 0mm 89% 0cm 37° 16°C 0mm 0.2kPa 24134m 6.2m/s 4.5m/s
11:00
71% 14°C 0mm 86% 0cm 49° 16°C 0mm 0.25kPa 24134m 5.1m/s 4m/s
12:00
78% 13°C 0mm 82% 0cm 59° 16°C 0mm 0.34kPa 24134m 4.7m/s 3.5m/s
13:00
81% 13°C 0mm 78% 0cm 68° 17°C 0mm 0.42kPa 24135m 4.6m/s 3.8m/s
14:00
83% 12°C 0mm 76% 0cm 71° 17°C 0mm 0.45kPa 24134m 4.5m/s 3.6m/s
15:00
86% 12°C 0mm 75% 0cm 66° 17°C 0mm 0.47kPa 24135m 4.6m/s 3.6m/s
16:00
86% 12°C 0mm 75% 0cm 56° 17°C 0mm 0.48kPa 24134m 5.4m/s 3.9m/s
17:00
87% 12°C 0mm 75% 0cm 45° 17°C 0mm 0.49kPa 24135m 5.9m/s 4.4m/s
18:00
87% 12°C 0mm 74% 0cm 34° 17°C 0mm 0.5kPa 24135m 5.6m/s 4m/s
19:00
68% 13°C 0mm 76% 0cm 22° 17°C 0mm 0.47kPa 24135m 5.9m/s 4.7m/s
20:00
49% 13°C 0mm 80% 0cm 11° 17°C 0mm 0.39kPa 24135m 6.2m/s 4.6m/s
21:00
30% 14°C 0mm 83% 0cm 0.11° 17°C 0mm 0.33kPa 24135m 6.5m/s 4.7m/s
22:00
22% 14°C 0mm 84% 0cm -10° 17°C 0mm 0.3kPa 24135m 6.9m/s 5.2m/s
23:00
15% 14°C 0mm 85% 0cm -19° 16°C 0mm 0.27kPa 24135m 7.2m/s 5.4m/s
Tue, May 19 Sunrise 06:40 Sunset 21:02
24:00
7% 14°C 0mm 86% 0cm -26° 16°C 0mm 0.26kPa 24134m 7.5m/s 5.4m/s
01:00
5% 14°C 0mm 87% 0cm -31° 16°C 0mm 0.25kPa 24135m 8.1m/s 5.8m/s
02:00
2% 14°C 0mm 88% 0cm -32° 16°C 0mm 0.23kPa 24135m 8.5m/s 6.2m/s
03:00
0% 15°C 0mm 90% 0cm -30° 16°C 0mm 0.19kPa 24135m 9.5m/s 6.8m/s
04:00
0% 15°C 0mm 92% 0cm -24° 16°C 0mm 0.14kPa 24134m 10m/s 7m/s
05:00
0% 15°C 0mm 92% 0cm -17° 17°C 0mm 0.14kPa 24135m 11m/s 7.3m/s
06:00
0% 16°C 0mm 92% 0cm -7.6° 17°C 0mm 0.14kPa 24135m 11m/s 7.6m/s
07:00
0% 16°C 0mm 94% 0cm 17°C 0mm 0.11kPa 24134m 12m/s 8.1m/s
08:00
0% 16°C 0mm 94% 0cm 14° 17°C 0mm 0.11kPa 24134m 13m/s 9.1m/s
09:00
0% 16°C 0mm 95% 0cm 25° 17°C 0mm 0.1kPa 24134m 14m/s 10m/s
10:00
1% 16°C 0mm 94% 0cm 37° 17°C 0mm 0.13kPa 24134m 16m/s 11m/s
11:00
1% 17°C 0.72mm 96% 0cm 49° 17°C 0.19mm 0.09kPa 10377m 18m/s 12m/s
12:00
2% 17°C 6mm 95% 0cm 60° 17°C 1.9mm 0.1kPa 4846m 21m/s 14m/s
13:00
1% 17°C 1.4mm 96% 0cm 68° 17°C 1.7mm 0.09kPa 6997m 22m/s 15m/s
14:00
1% 17°C 0.03mm 95% 0cm 71° 18°C 2.5mm 0.09kPa 11069m 21m/s 14m/s
15:00
0% 17°C 0mm 96% 0cm 66° 17°C 2.8mm 0.07kPa 24135m 18m/s 13m/s
16:00
0% 17°C 0mm 92% 0cm 57° 18°C 2.9mm 0.17kPa 24135m 17m/s 12m/s
17:00
0% 16°C 0mm 88% 0cm 45° 18°C 2.9mm 0.24kPa 24135m 17m/s 12m/s
18:00
0% 16°C 0mm 90% 0cm 34° 18°C 2.9mm 0.2kPa 24135m 16m/s 11m/s
19:00
1% 15°C 0.04mm 91% 0cm 22° 16°C 2.6mm 0.17kPa 18666m 13m/s 8.7m/s
20:00
1% 13°C 0.09mm 91% 0cm 11° 15°C 2.3mm 0.14kPa 13197m 10m/s 6.6m/s
21:00
2% 12°C 0.13mm 92% 0cm 0.24° 13°C 2mm 0.12kPa 7729m 7.8m/s 4.6m/s
22:00
2% 11°C 0.12mm 89% 0cm -10° 13°C 2.3mm 0.16kPa 10010m 9.4m/s 6.5m/s
23:00
1% 11°C 0.1mm 86% 0cm -19° 13°C 2.6mm 0.21kPa 12292m 11m/s 8.5m/s
Wed, May 20 Sunrise 06:39 Sunset 21:03
24:00
1% 11°C 0.09mm 83% 0cm -26° 13°C 2.9mm 0.26kPa 14574m 12m/s 10m/s
01:00
6% 11°C 0.06mm 82% 0cm -30° 14°C 2mm 0.29kPa 17567m 12m/s 10m/s
02:00
10% 10°C 0.04mm 80% 0cm -31° 14°C 1.1mm 0.32kPa 20559m 11m/s 9.5m/s
03:00
15% 10°C 0.01mm 78% 0cm -29° 14°C 0.13mm 0.35kPa 23552m 11m/s 9m/s
04:00
19% 10°C 0.01mm 77% 0cm -24° 14°C 0.15mm 0.37kPa 23058m 11m/s 9.1m/s
05:00
22% 11°C 0.01mm 77% 0cm -17° 15°C 0.17mm 0.38kPa 22564m 11m/s 9.1m/s
06:00
26% 11°C 0.01mm 77% 0cm -7.5° 15°C 0.19mm 0.39kPa 22069m 11m/s 9.2m/s
07:00
36% 11°C 0.007mm 78% 0cm 3.1° 15°C 0.21mm 0.38kPa 19216m 11m/s 9m/s
08:00
46% 11°C 0.003mm 78% 0cm 14° 15°C 0.23mm 0.37kPa 16363m 11m/s 8.9m/s
09:00
56% 12°C 0mm 79% 0cm 26° 15°C 0.25mm 0.36kPa 13510m 11m/s 8.8m/s
10:00
56% 12°C 0mm 81% 0cm 37° 15°C 0.54mm 0.32kPa 12562m 11m/s 8.9m/s
11:00
55% 12°C 0mm 82% 0cm 49° 15°C 0.83mm 0.29kPa 11615m 11m/s 9m/s
12:00
55% 12°C 0mm 84% 0cm 60° 15°C 1.1mm 0.26kPa 10667m 11m/s 9.1m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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