Rule Fog Hunter

Fog Hunter Forecast for La Fortuna, Costa Rica

La Fortuna, Alajuela Province, Costa Rica

Arenal's cone rises above the pasture and forest edges surrounding La Fortuna. Nearby, dark rock walls contain the tall white plunge of La Fortuna Waterfall as a separate vertical composition.

9 matching opportunities in the 14-day forecast.

Hourly forecast scores

Forecast valid from Oct 7, 2026, 11:00 PM UTC (one hour; not an observation)

Fog Probability

38%

Dewpoint Spread0.5°C

Visibility6520

Relative Humidity97%

Wind Speed0.6m/s

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Costa_Rica

First upcoming window

Fog

La Fortuna

Thu, Oct 8 · 22:00–02:00 · 4h window

Medium confidence

72%

🌫️Fog Probability80-100%

Dewpoint Spread: 0.5°C

Visibility: 520 (Fog)

Relative Humidity: 97%

Wind Speed: 0.6m/s (calm conditions)

Dense Fog

La Fortuna

Mon, Oct 12 · 03:00–05:00

🌫️Fog Probability:100%

High

Fog at Sunrise

La Fortuna

Mon, Oct 12 · 05:00–06:00

🌫️Fog Probability:100%

Medium

Dense Fog

La Fortuna

Tue, Oct 13 · 04:00–05:00

🌫️Fog Probability:80%

Low

Dense Fog at Sunrise

La Fortuna

Tue, Oct 13 · 05:00–06:00

🌫️Fog Probability:100%

Medium

Dense Fog

La Fortuna

Tue, Oct 13 · 06:00–07:00

🌫️Fog Probability:100%

Medium

Misty Conditions

La Fortuna

Wed, Oct 14 · 03:00–07:00

🌫️Fog Probability:92.3-100%

High

+2 more windows in the next 14 days

71-hour requirements breakdown

When available, this detailed table covers only the stated 71-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the full 14-day forecast period, so this table does not explain that entire period. Times shown in America/Costa_Rica.

Requirements breakdown is temporarily unavailable or expired. This does not mean no opportunities.

Supporting forecast inputs

Additional hourly values for interpreting the forecast and any derived scores. See the separate requirements breakdown for rule logic; missing values are unavailable.

Forecast time (America/Costa_Rica)	Aerosol Optical Depth (550nm)	Clear Sky Probability (Ensemble)	Dew Point	Lifted Index	Rainfall	Relative Humidity	Snowfall	Solar Elevation	Temperature	Total Precipitation	Vapor Pressure Deficit	Visibility	Wind Gusts	Wind Speed
Wed, Oct 7, 2026Sunrise 05:27 · Sunset 17:25
17:00	0.12	0%	24°C	-3.8°C	0.7mm	97%	0cm	5.5°	24°C	0.7mm	0.09kPa	6520m	2.6m/s	0.57m/s
18:00 Night	0.12	0%	23°C	-2.6°C	0.2mm	97%	0cm	-9.3°	24°C	0.2mm	0.09kPa	9060m	2.2m/s	1.1m/s
19:00 Night	0.14	0%	23°C	-2°C	0.1mm	92%	0cm	-24°	24°C	0.1mm	0.24kPa	21940m	2.1m/s	0.11m/s
20:00 Night	0.14	0%	23°C	-1.7°C	0mm	92%	0cm	-39°	24°C	0mm	0.24kPa	37920m	1.1m/s	0.59m/s
21:00 Night	0.16	0%	22°C	-1.6°C	0mm	90%	0cm	-54°	24°C	0mm	0.3kPa	37900m	2m/s	0.29m/s
22:00 Night	0.16	0%	22°C	-1.2°C	0mm	96%	0cm	-68°	23°C	0mm	0.11kPa	32560m	2.1m/s	0.72m/s
23:00 Night	0.15	0%	22°C	-1°C	0mm	98%	0cm	-82°	23°C	0mm	0.06kPa	11300m	2.1m/s	0.55m/s
Thu, Oct 8, 2026Sunrise 05:27 · Sunset 17:24
24:00 Night	0.15	0%	22°C	-1°C	0mm	96%	0cm	-80°	23°C	0mm	0.11kPa	33460m	1.9m/s	0.74m/s
01:00 Night	0.15	0%	22°C	-1.9°C	0mm	93%	0cm	-66°	23°C	0mm	0.2kPa	24240m	1.8m/s	0.36m/s
02:00 Night	0.14	0%	22°C	-2.4°C	0mm	95%	0cm	-52°	23°C	0mm	0.14kPa	34300m	2.1m/s	0.73m/s
03:00 Night	0.13	0%	22°C	-2.3°C	0mm	95%	0cm	-37°	23°C	0mm	0.14kPa	37300m	2.4m/s	0.68m/s
04:00 Night	0.12	0%	22°C	-2.3°C	0mm	94%	0cm	-22°	23°C	0mm	0.17kPa	11700m	2.3m/s	0.65m/s
05:00 Night	0.11	0%	22°C	-2.5°C	0mm	95%	0cm	-7.4°	22°C	0mm	0.13kPa	1100m	3m/s	1.2m/s
06:00	0.11	0%	22°C	-2.7°C	0mm	94%	0cm	7.3°	23°C	0mm	0.17kPa	1000m	3.4m/s	1.4m/s
07:00	0.11	1%	23°C	-3.8°C	0mm	91%	0cm	22°	24°C	0mm	0.27kPa	4720m	3.9m/s	0.65m/s
08:00	0.14	2%	23°C	-4.2°C	0mm	87%	0cm	36°	25°C	0mm	0.42kPa	11300m	3.8m/s	0.81m/s
09:00	0.18	3%	23°C	-4.8°C	0mm	81%	0cm	50°	26°C	0mm	0.65kPa	29000m	4.7m/s	1.2m/s
10:00	0.18	3%	23°C	-4.8°C	0mm	76%	0cm	63°	27°C	0mm	0.87kPa	46120m	4.9m/s	1.1m/s
11:00	0.13	3%	23°C	-4.8°C	0mm	72%	0cm	72°	28°C	0mm	1.1kPa	27840m	5.4m/s	1m/s
12:00	0.16	3%	23°C	-4.9°C	0mm	68%	0cm	71°	29°C	0mm	1.3kPa	30660m	6.6m/s	1.8m/s
13:00	0.22	2%	22°C	-5°C	0mm	64%	0cm	61°	30°C	0mm	1.5kPa	44500m	6.7m/s	1.7m/s
14:00	0.27	1%	22°C	-4.7°C	0mm	63%	0cm	48°	30°C	0mm	1.5kPa	53140m	7.3m/s	2.4m/s
15:00	0.36	0%	22°C	-4.4°C	0mm	69%	0cm	34°	28°C	0mm	1.2kPa	18980m	7.7m/s	1.8m/s
16:00	0.31	0%	23°C	-4.2°C	0.1mm	82%	0cm	20°	26°C	0.1mm	0.6kPa	3760m	6.2m/s	2.9m/s
17:00	0.18	0%	23°C	-3°C	0.6mm	96%	0cm	5.4°	24°C	1.3mm	0.12kPa	5260m	8.6m/s	0.6m/s
18:00 Night	0.17	0%	23°C	-2.3°C	0.3mm	98%	0cm	-9.4°	23°C	0.3mm	0.06kPa	9300m	2.6m/s	0.97m/s
19:00 Night	Unavailable	0%	23°C	-2.2°C	0.1mm	97%	0cm	-24°	23°C	0.1mm	0.09kPa	13960m	2.1m/s	0.46m/s
20:00 Night	Unavailable	1%	23°C	-2.1°C	0mm	95%	0cm	-39°	24°C	0mm	0.15kPa	20100m	1.5m/s	0.4m/s
21:00 Night	Unavailable	1%	22°C	-1.4°C	0mm	94%	0cm	-54°	23°C	0mm	0.17kPa	27200m	1.4m/s	0.07m/s
22:00 Night	Unavailable	1%	22°C	-1.5°C	0mm	97%	0cm	-68°	23°C	0mm	0.08kPa	2180m	1.1m/s	0.36m/s
23:00 Night	Unavailable	0%	22°C	-1.7°C	0mm	97%	0cm	-82°	22°C	0mm	0.08kPa	520m	1.4m/s	0.6m/s
Fri, Oct 9, 2026Sunrise 05:27 · Sunset 17:24
24:00 Night	Unavailable	0%	22°C	-1.7°C	0mm	97%	0cm	-81°	22°C	0mm	0.08kPa	560m	1.3m/s	0.16m/s
01:00 Night	Unavailable	0%	22°C	-1.6°C	0mm	97%	0cm	-66°	22°C	0mm	0.08kPa	560m	1.1m/s	0.4m/s
02:00 Night	Unavailable	0%	21°C	-1.2°C	0mm	95%	0cm	-52°	22°C	0mm	0.13kPa	3320m	1.4m/s	0.36m/s
03:00 Night	Unavailable	0%	21°C	-1.4°C	0mm	91%	0cm	-37°	23°C	0mm	0.25kPa	30500m	1.7m/s	0.53m/s
04:00 Night	Unavailable	1%	21°C	-1.6°C	0mm	91%	0cm	-22°	23°C	0mm	0.25kPa	34980m	2.5m/s	0.82m/s
05:00 Night	Unavailable	1%	21°C	-1.3°C	0mm	89%	0cm	-7.4°	23°C	0mm	0.3kPa	37300m	2.5m/s	0.54m/s
06:00	Unavailable	2%	21°C	-1.5°C	0mm	92%	0cm	7.3°	23°C	0mm	0.22kPa	3880m	1.9m/s	0.45m/s
07:00	Unavailable	6%	23°C	-2.5°C	0mm	93%	0cm	22°	24°C	0mm	0.21kPa	2220m	2.9m/s	0.35m/s
08:00	Unavailable	11%	23°C	-3.3°C	0mm	87%	0cm	36°	25°C	0mm	0.42kPa	16140m	3.6m/s	0.63m/s
09:00	Unavailable	15%	23°C	-4.1°C	0mm	80%	0cm	50°	27°C	0mm	0.69kPa	23700m	4.4m/s	1.2m/s
10:00	Unavailable	13%	23°C	-4.6°C	0mm	76%	0cm	63°	28°C	0mm	0.9kPa	41980m	5.9m/s	1.6m/s
11:00	Unavailable	11%	23°C	-4.6°C	0mm	72%	0cm	72°	29°C	0mm	1.1kPa	24900m	6.1m/s	1.4m/s
12:00	Unavailable	9%	23°C	-4.9°C	0mm	70%	0cm	71°	29°C	0mm	1.2kPa	15440m	6.2m/s	1.6m/s
13:00	Unavailable	6%	23°C	-4.6°C	0mm	68%	0cm	61°	30°C	0.1mm	1.3kPa	10520m	6.2m/s	1.4m/s
14:00	Unavailable	4%	24°C	-4.7°C	0mm	72%	0cm	48°	29°C	0.1mm	1.1kPa	20400m	5.8m/s	1.3m/s
15:00	Unavailable	1%	23°C	-4.2°C	0mm	69%	0cm	34°	30°C	0mm	1.3kPa	53160m	5.2m/s	0.74m/s
16:00	Unavailable	1%	24°C	-3.6°C	0.8mm	91%	0cm	20°	25°C	1.1mm	0.29kPa	6580m	6.7m/s	0.65m/s
17:00	Unavailable	0%	24°C	-3.2°C	0.3mm	92%	0cm	5.2°	25°C	0.3mm	0.25kPa	11620m	2.8m/s	1.2m/s
18:00 Night	Unavailable	0%	24°C	-2.9°C	0mm	96%	0cm	-9.5°	24°C	0mm	0.12kPa	8620m	2.4m/s	0.79m/s
19:00 Night	Unavailable	0%	24°C	-2.5°C	0.2mm	97%	0cm	-24°	24°C	0.2mm	0.09kPa	11500m	2.3m/s	0.86m/s
20:00 Night	Unavailable	1%	23°C	-2.5°C	0mm	94%	0cm	-39°	24°C	0mm	0.18kPa	23980m	1.9m/s	0.43m/s
21:00 Night	Unavailable	1%	22°C	-2.3°C	0mm	88%	0cm	-54°	24°C	0mm	0.36kPa	37320m	1.5m/s	0.14m/s
22:00 Night	Unavailable	1%	22°C	-2.4°C	0mm	88%	0cm	-68°	24°C	0mm	0.36kPa	41020m	1.4m/s	0.1m/s
23:00 Night	Unavailable	1%	22°C	-2.5°C	0mm	90%	0cm	-83°	24°C	0mm	0.29kPa	16900m	2.3m/s	0.71m/s
Sat, Oct 10, 2026Sunrise 05:27 · Sunset 17:23
24:00 Night	Unavailable	1%	22°C	-2.8°C	0mm	91%	0cm	-81°	23°C	0mm	0.25kPa	15960m	2.4m/s	0.82m/s
01:00 Night	Unavailable	2%	21°C	-2.9°C	0mm	92%	0cm	-66°	23°C	0mm	0.22kPa	1220m	2.3m/s	0.93m/s
02:00 Night	Unavailable	4%	21°C	-2.7°C	0mm	91%	0cm	-52°	22°C	0mm	0.24kPa	740m	2.4m/s	0.72m/s
03:00 Night	Unavailable	5%	20°C	-1.8°C	0mm	87%	0cm	-37°	23°C	0mm	0.35kPa	1540m	2.1m/s	0.36m/s
04:00 Night	Unavailable	5%	20°C	-1°C	0mm	84%	0cm	-22°	23°C	0mm	0.44kPa	4240m	1.9m/s	0.54m/s
05:00 Night	Unavailable	6%	20°C	-0.1°C	0mm	86%	0cm	-7.4°	22°C	0mm	0.38kPa	7660m	2.5m/s	0.92m/s
06:00	Unavailable	6%	21°C	-0.4°C	0mm	87%	0cm	7.3°	23°C	0mm	0.36kPa	48380m	2.5m/s	0.74m/s
07:00	Unavailable	7%	22°C	-1.8°C	0mm	90%	0cm	22°	24°C	0mm	0.3kPa	38420m	2.4m/s	0.16m/s
08:00	Unavailable	7%	23°C	-2.4°C	0mm	87%	0cm	36°	25°C	0mm	0.42kPa	42980m	3.2m/s	0.25m/s
09:00	Unavailable	8%	23°C	-3°C	0mm	78%	0cm	50°	27°C	0mm	0.78kPa	48060m	4.1m/s	0.79m/s
10:00	Unavailable	8%	23°C	-3.8°C	0mm	75%	0cm	63°	27°C	0mm	0.9kPa	47020m	4.4m/s	0.73m/s
11:00	Unavailable	9%	23°C	-4.3°C	0mm	72%	0cm	72°	28°C	0mm	1.1kPa	41960m	4.2m/s	0.8m/s
12:00	Unavailable	9%	23°C	-5°C	0mm	73%	0cm	71°	29°C	0mm	1.1kPa	34980m	5.7m/s	1.6m/s
13:00	Unavailable	7%	23°C	-5.2°C	0.1mm	74%	0cm	61°	28°C	0.5mm	0.99kPa	5620m	7.4m/s	2.4m/s
14:00	Unavailable	4%	23°C	-4.7°C	0.2mm	71%	0cm	48°	29°C	0.4mm	1.1kPa	19060m	7.7m/s	0.6m/s
15:00	Unavailable	2%	23°C	-4°C	0.1mm	76%	0cm	34°	28°C	0.1mm	0.89kPa	5780m	4.4m/s	1.1m/s
16:00	Unavailable	2%	24°C	-3.3°C	0.2mm	89%	0cm	20°	26°C	0.9mm	0.36kPa	5860m	5.1m/s	1.8m/s

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fog Hunter conditions across Costa Rica. The requirements and hourly values above show how those signals apply at La Fortuna.

Explore Fog Hunter conditions across Costa Rica →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at La Fortuna during the last 365 days.

Last 30 days

recorded matching windows · 73% average confidence

Last 90 days

recorded matching windows · 87% average confidence

Last 365 days

recorded matching windows · 85% average confidence

Most frequent recorded start hour

01:00 local time, shared by 28 of 89 matches recorded in the last 365 days.

Most represented month

August, with 26 of 89 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →

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