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Rule Fog Hunter

Monteverde - Fog Hunter - Costa Rica

Puntarenas, Puntarenas 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 · ≥ 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 Spread6.6°C
Visibility24135 (Clear)
Relative Humidity67%
Wind Speed1.5m/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
≥ 75.0%
Sat, May 23
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
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19:000%
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Sun, May 24
24:000%
01:000%
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03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
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13:000%
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Mon, May 25
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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Tue, May 26
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
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22:000%
23:000%
Wed, May 27
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
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
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
Sun, May 24 Sunrise 05:17 Sunset 17:55
07:00
12% 21°C 0mm 67% 0cm 23° 28°C 0mm 1.2kPa 24135m 2.3m/s 1.5m/s
08:00
21% 21°C 0mm 59% 0cm 37° 30°C 0mm 1.7kPa 24135m 2.2m/s 1.2m/s
09:00
31% 21°C 0mm 53% 0cm 51° 32°C 0mm 2.2kPa 24134m 2m/s 1.1m/s
10:00
28% 21°C 0mm 50% 0cm 64° 33°C 0mm 2.5kPa 24134m 2.7m/s 2.5m/s
11:00
25% 21°C 0mm 52% 0cm 76° 32°C 0mm 2.3kPa 24134m 3.2m/s 3.4m/s
12:00
22% 21°C 0mm 51% 0cm 78° 33°C 0.06mm 2.4kPa 24134m 3m/s 2.8m/s
13:00
15% 22°C 0mm 60% 0cm 67° 31°C 0mm 1.8kPa 24135m 3.4m/s 4.3m/s
14:00
7% 22°C 0mm 65% 0cm 54° 30°C 0.19mm 1.5kPa 24134m 3.2m/s 4m/s
15:00
0% 22°C 0mm 60% 0cm 40° 31°C 0.5mm 1.8kPa 24135m 3.4m/s 4.2m/s
16:00
0% 22°C 0mm 62% 0cm 26° 30°C 0.69mm 1.6kPa 24134m 3m/s 4.4m/s
17:00
0% 22°C 0mm 65% 0cm 12° 30°C 0.88mm 1.5kPa 24135m 2.6m/s 3m/s
18:00
0% 23°C 0mm 72% 0cm -1.7° 28°C 1.1mm 1.1kPa 21410m 2.2m/s 1.8m/s
19:00
2% 23°C 0mm 73% 0cm -15° 28°C 0.06mm 1kPa 24135m 1.8m/s 1.4m/s
20:00
5% 22°C 0mm 74% 0cm -29° 28°C 0.06mm 0.97kPa 24135m 2m/s 1.4m/s
21:00
7% 22°C 0mm 74% 0cm -41° 27°C 0.06mm 0.93kPa 24135m 2.7m/s 1.7m/s
22:00
6% 22°C 0mm 74% 0cm -51° 27°C 0.06mm 0.91kPa 24134m 2.7m/s 1.7m/s
23:00
4% 22°C 0mm 75% 0cm -58° 26°C 0.06mm 0.85kPa 24134m 3.1m/s 2m/s
Mon, May 25 Sunrise 05:17 Sunset 17:55
24:00
3% 22°C 0mm 76% 0cm -59° 26°C 0.06mm 0.81kPa 24134m 3.2m/s 2.2m/s
01:00
3% 22°C 0mm 76% 0cm -53° 26°C 0mm 0.8kPa 24135m 3.3m/s 2m/s
02:00
2% 21°C 0mm 75% 0cm -43° 26°C 0mm 0.84kPa 24134m 3.4m/s 2.1m/s
03:00
2% 21°C 0mm 74% 0cm -31° 26°C 0mm 0.87kPa 24135m 3.4m/s 2.1m/s
04:00
1% 21°C 0mm 72% 0cm -18° 26°C 0mm 0.91kPa 24135m 3.1m/s 1.9m/s
05:00
1% 20°C 0mm 71% 0cm -4.7° 26°C 0mm 0.98kPa 24134m 2.7m/s 1.7m/s
06:00
0% 20°C 0mm 70% 0cm 9.1° 26°C 0mm 1kPa 24135m 2.5m/s 1.5m/s
07:00
0% 20°C 0mm 66% 0cm 23° 27°C 0mm 1.2kPa 24134m 2.2m/s 1.2m/s
08:00
0% 20°C 0mm 56% 0cm 37° 29°C 0mm 1.8kPa 24134m 2.4m/s 1.1m/s
09:00
0% 20°C 0mm 49% 0cm 51° 32°C 0mm 2.4kPa 24134m 2.1m/s 1.1m/s
10:00
0% 20°C 0mm 47% 0cm 64° 33°C 0mm 2.6kPa 24134m 3.1m/s 2.5m/s
11:00
0% 20°C 0mm 49% 0cm 76° 32°C 0mm 2.5kPa 24135m 3.8m/s 4.7m/s
12:00
0% 21°C 0mm 57% 0cm 78° 30°C 0mm 1.8kPa 24134m 3.6m/s 4.4m/s
13:00
0% 21°C 0mm 61% 0cm 67° 29°C 0mm 1.6kPa 24135m 2.9m/s 3.3m/s
14:00
1% 22°C 0mm 62% 0cm 54° 30°C 0.13mm 1.6kPa 24134m 1.9m/s 2.8m/s
15:00
1% 21°C 0mm 60% 0cm 40° 30°C 0.19mm 1.7kPa 24135m 2.1m/s 2.7m/s
16:00
1% 22°C 0mm 59% 0cm 26° 31°C 0.25mm 1.8kPa 24134m 2.8m/s 3.1m/s
17:00
0% 22°C 0mm 64% 0cm 12° 29°C 0.31mm 1.5kPa 24134m 2.3m/s 3.1m/s
18:00
0% 22°C 0mm 72% 0cm -1.7° 28°C 0.5mm 1.1kPa 24135m 3.3m/s 2.7m/s
19:00
0% 22°C 0mm 73% 0cm -15° 28°C 0mm 1kPa 24134m 1.8m/s 1.3m/s
20:00
0% 22°C 0mm 72% 0cm -28° 28°C 0mm 1kPa 24135m 1.9m/s 1.3m/s
21:00
0% 22°C 0mm 73% 0cm -41° 27°C 0mm 0.96kPa 24134m 1.8m/s 1.1m/s
22:00
0% 22°C 0mm 73% 0cm -51° 27°C 0mm 0.97kPa 24134m 1.6m/s 0.72m/s
23:00
0% 21°C 0mm 72% 0cm -58° 27°C 0mm 1kPa 24134m 2.1m/s 1.4m/s
Tue, May 26 Sunrise 05:17 Sunset 17:55
24:00
0% 21°C 0mm 71% 0cm -58° 27°C 0mm 1kPa 24135m 2m/s 1.4m/s
01:00
0% 21°C 0mm 71% 0cm -53° 26°C 0mm 0.98kPa 24134m 1.8m/s 1.3m/s
02:00
0% 21°C 0mm 72% 0cm -43° 26°C 0mm 0.94kPa 24135m 2m/s 1.6m/s
03:00
0% 20°C 0mm 72% 0cm -31° 26°C 0mm 0.93kPa 24134m 2.1m/s 1.7m/s
04:00
0% 20°C 0mm 72% 0cm -18° 26°C 0mm 0.93kPa 24135m 2.3m/s 1.8m/s
05:00
0% 20°C 0mm 72% 0cm -4.7° 26°C 0mm 0.93kPa 24134m 2.6m/s 1.9m/s
06:00
0% 20°C 0mm 70% 0cm 9.1° 26°C 0mm 1kPa 24134m 2m/s 1.4m/s
07:00
1% 20°C 0mm 64% 0cm 23° 28°C 0mm 1.3kPa 24134m 1.9m/s 1.1m/s
08:00
3% 20°C 0mm 58% 0cm 37° 29°C 0mm 1.7kPa 24135m 1.9m/s 1.4m/s
09:00
4% 20°C 0mm 53% 0cm 51° 31°C 0mm 2.1kPa 24135m 2.1m/s 1.7m/s
10:00
3% 20°C 0mm 50% 0cm 64° 32°C 0mm 2.3kPa 24134m 2.6m/s 2.5m/s
11:00
3% 21°C 0mm 50% 0cm 76° 32°C 0mm 2.4kPa 24135m 3.3m/s 3.6m/s
12:00
2% 21°C 0mm 51% 0cm 77° 32°C 0mm 2.4kPa 24134m 3.3m/s 4.1m/s
13:00
1% 22°C 0.03mm 62% 0cm 67° 30°C 1mm 1.7kPa 24134m 2.7m/s 3.2m/s
14:00
1% 23°C 0.06mm 72% 0cm 54° 28°C 2mm 1.1kPa 24135m 2m/s 2.2m/s
15:00
0% 23°C 0.09mm 83% 0cm 40° 26°C 3.1mm 0.59kPa 24135m 1.4m/s 1.2m/s
16:00
0% 23°C 0.07mm 83% 0cm 26° 26°C 3.1mm 0.59kPa 24135m 1.4m/s 1.2m/s
17:00
0% 23°C 0.06mm 83% 0cm 12° 27°C 3.1mm 0.59kPa 24135m 1.4m/s 1.2m/s
18:00
0% 23°C 0.04mm 83% 0cm -1.6° 27°C 3.1mm 0.59kPa 24135m 1.4m/s 1.2m/s
19:00
0% 24°C 0.07mm 84% 0cm -15° 26°C 2.2mm 0.54kPa 23980m 2m/s 1.6m/s
20:00
0% 24°C 0.09mm 86% 0cm -28° 26°C 1.2mm 0.48kPa 23825m 2.6m/s 2m/s
21:00
0% 24°C 0.12mm 87% 0cm -40° 26°C 0.25mm 0.43kPa 23670m 3.2m/s 2.5m/s
22:00
0% 24°C 0.08mm 86% 0cm -51° 26°C 0.27mm 0.46kPa 23825m 3.1m/s 2.3m/s
23:00
0% 23°C 0.04mm 85% 0cm -57° 26°C 0.29mm 0.5kPa 23980m 2.9m/s 2.1m/s
Wed, May 27 Sunrise 05:17 Sunset 17:55
24:00
0% 23°C 0mm 84% 0cm -58° 26°C 0.31mm 0.53kPa 24135m 2.7m/s 1.9m/s
01:00
0% 23°C 0mm 80% 0cm -53° 27°C 0.23mm 0.72kPa 24135m 2.3m/s 1.6m/s
02:00
0% 23°C 0mm 75% 0cm -43° 28°C 0.15mm 0.93kPa 24135m 1.9m/s 1.4m/s
03:00
0% 23°C 0mm 70% 0cm -31° 28°C 0.06mm 1.1kPa 24135m 1.4m/s 1.2m/s
04:00
0% 22°C 0mm 67% 0cm -18° 29°C 0.06mm 1.3kPa 24135m 1.3m/s 1.4m/s
05:00
0% 22°C 0mm 65% 0cm -4.7° 29°C 0.06mm 1.4kPa 24135m 1.3m/s 1.5m/s
06:00
0% 22°C 0mm 62% 0cm 9.1° 30°C 0.06mm 1.6kPa 24135m 1.2m/s 1.7m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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