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Rule Fog Hunter

Rincón de la Vieja - Fog Hunter - Costa Rica

Liberia, Guanacaste Province, Costa Rica

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 · ≥ 60.0%

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 Spread10.8°C
Visibility24134 (Clear)
Relative Humidity52%
Wind Speed1.9m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Costa_Rica

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 cloud forest conditions and valley fog create atmospheric scenes across Costa Rica's diverse elevations and microclimates. We track elevation-specific humidity, temperature differentials, and wind patterns to identify when fog and mist transform rainforest, cloud forest, and volcanic landscapes.

Costa Rica's dramatic topography creates numerous fog microclimates—from Monteverde's perpetual cloud forest mist to volcanic valley inversions to Caribbean coastal morning fog. The collision of Pacific and Caribbean weather systems over mountainous terrain produces exceptional fog photography opportunities year-round, with green season (May-November) bringing the most dramatic conditions.

What makes Costa Rica fog photography special:

  • Cloud forest immersion - Monteverde's permanent fog layer supports epiphyte-draped forests where mist is the defining feature, not occasional visitor
  • Volcanic valley fog - Arenal and Turrialba valleys fill with morning fog while volcanic peaks emerge above inversion layers
  • Microclimate transitions - Experience multiple fog types in single day—cloud forest, valley fog, coastal mist across short distances
  • Jungle emergence - Rainforest canopy trees and cecropia emerging from morning fog layers create layered atmospheric compositions

Monteverde cloud forest reserve exists because of fog—the persistent cloud layer that supports one of Earth's most biodiverse ecosystems. Here, photography captures fog as environment, with epiphytes, bromeliads, and moss-draped trees emerging from perpetual mist. The suspended bridges offer unique elevated perspectives into the fog layer. From La Fortuna, Arenal Volcano's perfect cone rises above valley fog on calm mornings, especially during green season. Turrialba Valley experiences similar inversions with the active volcano emerging above fog pools. Rincón de la Vieja's volcanic slopes create altitude-based fog layers with fumaroles adding volcanic steam to natural mist. Best conditions occur during green season when humidity is highest—arrive early as valley fog often dissipates by 8-9 AM.

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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
America/Costa_Rica
Fog Probability
≥ 60.0%
Tue, Apr 7
19:000%
20:000%
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22:000%
23:000%
Wed, Apr 8
24:000%
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Thu, Apr 9
24:000%
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Fri, Apr 10
24:000%
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Sat, Apr 11
24:000%
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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
America/Costa_Rica
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, Apr 8 Sunrise 05:34 Sunset 17:52
19:00
3% 17°C 0mm 52% 0cm -17° 28°C 0mm 1.8kPa 24134m 3.6m/s 1.9m/s
20:00
4% 18°C 0mm 58% 0cm -32° 27°C 0mm 1.4kPa 24135m 6.6m/s 3.4m/s
21:00
6% 18°C 0mm 63% 0cm -45° 26°C 0mm 1.2kPa 24135m 7m/s 3.7m/s
22:00
6% 19°C 0mm 68% 0cm -58° 25°C 0mm 1kPa 24135m 5.5m/s 2.9m/s
23:00
6% 19°C 0mm 74% 0cm -69° 24°C 0mm 0.76kPa 24134m 5.9m/s 3m/s
Thu, Apr 9 Sunrise 05:34 Sunset 17:52
24:00
6% 20°C 0mm 78% 0cm -71° 23°C 0mm 0.63kPa 24134m 6.4m/s 3.1m/s
01:00
18% 20°C 0mm 82% 0cm -64° 23°C 0mm 0.53kPa 24134m 5.4m/s 2.6m/s
02:00
29% 20°C 0mm 82% 0cm -51° 23°C 0mm 0.52kPa 24135m 6.1m/s 3m/s
03:00
41% 20°C 0mm 81% 0cm -38° 24°C 0mm 0.55kPa 24134m 5.6m/s 2.9m/s
04:00
46% 20°C 0mm 82% 0cm -24° 23°C 0mm 0.53kPa 24135m 4m/s 2.2m/s
05:00
52% 20°C 0mm 83% 0cm -9.1° 23°C 0mm 0.48kPa 24135m 3.2m/s 1.3m/s
06:00
57% 20°C 0mm 80% 0cm 5.6° 24°C 0mm 0.57kPa 24135m 3.2m/s 1.3m/s
07:00
67% 20°C 0.01mm 70% 0cm 20° 26°C 0mm 1kPa 21689m 5.4m/s 2.5m/s
08:00
76% 20°C 0mm 62% 0cm 35° 28°C 0mm 1.4kPa 22060m 5.8m/s 2.9m/s
09:00
86% 19°C 0mm 56% 0cm 50° 29°C 0mm 1.8kPa 24135m 6.4m/s 3.6m/s
10:00
88% 19°C 0mm 52% 0cm 64° 30°C 0.06mm 2.1kPa 24134m 6.8m/s 4.2m/s
11:00
90% 19°C 0mm 47% 0cm 79° 32°C 0.06mm 2.5kPa 24134m 7.5m/s 4.7m/s
12:00
92% 19°C 0mm 41% 0cm 85° 34°C 0.06mm 3.1kPa 24135m 7.2m/s 4.5m/s
13:00
88% 19°C 0mm 39% 0cm 71° 35°C 0mm 3.3kPa 24135m 7.1m/s 5m/s
14:00
83% 18°C 0mm 37% 0cm 56° 35°C 0mm 3.5kPa 24134m 7.9m/s 5.2m/s
15:00
79% 17°C 0mm 35% 0cm 41° 35°C 0mm 3.6kPa 24134m 7.6m/s 4.4m/s
16:00
83% 16°C 0mm 35% 0cm 27° 34°C 0mm 3.5kPa 24135m 7.9m/s 4.8m/s
17:00
87% 17°C 0mm 38% 0cm 12° 33°C 0mm 3kPa 24134m 8.8m/s 4.6m/s
18:00
91% 18°C 0mm 48% 0cm -2.5° 30°C 0mm 2.2kPa 24135m 6m/s 3.5m/s
19:00
94% 19°C 0mm 58% 0cm -17° 28°C 0mm 1.6kPa 24134m 6.1m/s 3.2m/s
20:00
97% 19°C 0mm 65% 0cm -31° 26°C 0mm 1.2kPa 24134m 6m/s 2.9m/s
21:00
100% 20°C 0mm 71% 0cm -45° 25°C 0mm 0.93kPa 24135m 6.3m/s 2.9m/s
22:00
99% 20°C 0mm 76% 0cm -58° 25°C 0mm 0.72kPa 24134m 5.9m/s 2.5m/s
23:00
99% 20°C 0mm 78% 0cm -69° 24°C 0mm 0.67kPa 24134m 5.2m/s 2.3m/s
Fri, Apr 10 Sunrise 05:33 Sunset 17:52
24:00
98% 20°C 0mm 80% 0cm -71° 24°C 0mm 0.61kPa 24135m 4.1m/s 1.8m/s
01:00
96% 20°C 0mm 80% 0cm -63° 24°C 0mm 0.6kPa 24134m 4.1m/s 1.7m/s
02:00
93% 20°C 0mm 81% 0cm -51° 24°C 0mm 0.57kPa 24134m 3.8m/s 1.6m/s
03:00
91% 21°C 0mm 82% 0cm -38° 24°C 0.06mm 0.53kPa 21886m 3.6m/s 1.6m/s
04:00
90% 21°C 0mm 84% 0cm -23° 23°C 0.06mm 0.45kPa 21645m 3.1m/s 1.3m/s
05:00
90% 21°C 0mm 84% 0cm -8.9° 23°C 0.06mm 0.45kPa 21633m 4.1m/s 1.7m/s
06:00
89% 21°C 0mm 80% 0cm 5.8° 24°C 0.06mm 0.62kPa 21637m 4.2m/s 1.8m/s
07:00
81% 20°C 0mm 76% 0cm 20° 25°C 0mm 0.76kPa 21632m 5.1m/s 2.6m/s
08:00
72% 20°C 0mm 71% 0cm 35° 26°C 0.06mm 0.97kPa 21645m 5.9m/s 2.8m/s
09:00
64% 20°C 0mm 64% 0cm 50° 28°C 0.06mm 1.3kPa 21661m 6.5m/s 3.4m/s
10:00
70% 20°C 0mm 61% 0cm 64° 29°C 0.06mm 1.5kPa 24134m 6.4m/s 3.9m/s
11:00
77% 20°C 0mm 54% 0cm 79° 30°C 0.06mm 2kPa 24135m 6.7m/s 4.4m/s
12:00
83% 20°C 0mm 48% 0cm 85° 32°C 0.13mm 2.4kPa 24135m 7.2m/s 4.4m/s
13:00
83% 19°C 0mm 43% 0cm 71° 33°C 0mm 2.9kPa 24135m 7.1m/s 4.2m/s
14:00
84% 19°C 0mm 40% 0cm 56° 34°C 0mm 3.2kPa 24134m 7.2m/s 4.6m/s
15:00
84% 19°C 0mm 42% 0cm 41° 34°C 0mm 3kPa 24135m 8.2m/s 5.3m/s
16:00
84% 19°C 0mm 47% 0cm 27° 32°C 0mm 2.5kPa 24134m 9.3m/s 5.3m/s
17:00
85% 20°C 0mm 56% 0cm 12° 30°C 0mm 1.8kPa 24135m 9.6m/s 4.9m/s
18:00
85% 21°C 0mm 70% 0cm -2.5° 27°C 0mm 1.1kPa 24134m 6.7m/s 3.6m/s
19:00
85% 21°C 0mm 76% 0cm -17° 25°C 0mm 0.78kPa 24134m 6.9m/s 3.1m/s
20:00
85% 21°C 0mm 76% 0cm -31° 25°C 0mm 0.76kPa 24134m 6.5m/s 2.6m/s
21:00
85% 21°C 0mm 77% 0cm -45° 25°C 0mm 0.71kPa 24135m 5.3m/s 2.2m/s
22:00
83% 20°C 0mm 79% 0cm -58° 24°C 0mm 0.64kPa 24135m 3.9m/s 1.6m/s
23:00
82% 21°C 0mm 80% 0cm -68° 24°C 0mm 0.6kPa 24135m 3.8m/s 1.3m/s
Sat, Apr 11 Sunrise 05:33 Sunset 17:52
24:00
80% 21°C 0mm 81% 0cm -71° 24°C 0mm 0.56kPa 24135m 3m/s 0.96m/s
01:00
75% 21°C 0mm 70% 0cm -63° 26°C 0mm 1kPa 24135m 6.1m/s 3.1m/s
02:00
70% 20°C 0mm 59% 0cm -51° 29°C 0mm 1.6kPa 24135m 9.2m/s 5.3m/s
03:00
65% 19°C 0mm 48% 0cm -37° 32°C 0mm 2.4kPa 24135m 12m/s 7.5m/s
04:00
62% 19°C 0mm 45% 0cm -23° 33°C 0mm 2.8kPa 24135m 12m/s 7.8m/s
05:00
58% 19°C 0mm 41% 0cm -8.8° 34°C 0mm 3.2kPa 24135m 12m/s 8.1m/s
06:00
55% 19°C 0mm 38% 0cm 5.9° 35°C 0mm 3.6kPa 24135m 12m/s 8.4m/s
07:00
49% 19°C 0mm 38% 0cm 20° 35°C 0mm 3.5kPa 24135m 12m/s 8.7m/s
08:00
44% 19°C 0mm 38% 0cm 35° 35°C 0mm 3.5kPa 24135m 12m/s 8.9m/s
09:00
38% 18°C 0mm 38% 0cm 50° 35°C 0mm 3.5kPa 24135m 12m/s 9.2m/s
10:00
38% 19°C 0mm 44% 0cm 65° 33°C 0mm 2.8kPa 24135m 12m/s 8.6m/s
11:00
37% 20°C 0mm 50% 0cm 79° 31°C 0mm 2.3kPa 24135m 12m/s 7.9m/s
12:00
37% 20°C 0mm 56% 0cm 85° 29°C 0mm 1.8kPa 24135m 13m/s 7.2m/s
13:00
41% 20°C 0mm 60% 0cm 71° 29°C 0mm 1.6kPa 24135m 13m/s 6.9m/s
14:00
45% 20°C 0mm 63% 0cm 56° 28°C 0mm 1.4kPa 24135m 13m/s 6.7m/s
15:00
49% 20°C 0mm 66% 0cm 41° 27°C 0mm 1.2kPa 24135m 13m/s 6.4m/s
16:00
49% 20°C 0mm 68% 0cm 27° 27°C 0mm 1.1kPa 24135m 12m/s 6m/s
17:00
49% 20°C 0mm 70% 0cm 12° 26°C 0mm 1kPa 24135m 11m/s 5.6m/s
18:00
49% 21°C 0mm 71% 0cm -2.5° 26°C 0mm 0.97kPa 24135m 11m/s 5.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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