Rule Fog Hunter

Fog Hunter Forecast for San José, Costa Rica

San José, Provincia de San José, Costa Rica

San José spreads across elevated neighbourhoods within the Central Valley. Dense roofs, church towers, and modern blocks overlap below the ridges that enclose the capital.

6 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

Dewpoint Spread0.0°C

Visibility760

Relative Humidity100%

Wind Speed0.2m/s

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Costa_Rica

First upcoming window

Dense Fog

San José

Fri, Oct 9 · 02:00–04:00 · 2h window

Medium confidence

60%

🌫️Fog Probability80-100%

Dewpoint Spread: 0.6°C

Visibility: 1180 (Mist/Haze)

Relative Humidity: 96%

Wind Speed: 1.9m/s (calm conditions)

Misty Conditions

San José

Mon, Oct 12 · 03:00–05:00

🌫️Fog Probability:77.7-94.8%

Low

Misty Conditions at Sunrise

San José

Mon, Oct 12 · 05:00–06:00

🌫️Fog Probability:79.8%

Low

Dense Fog

San José

Mon, Oct 12 · 19:00–05:00

🌫️Fog Probability:80-100%

Medium

Dense Fog

San José

Fri, Oct 16 · 22:00–05:00

🌫️Fog Probability:77.7-100%

Low

Dense Fog at Sunrise

San José

Sat, Oct 17 · 05:00–06:00

🌫️Fog Probability:80%

Low

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 05:24 · Sunset 17:23
17:00	0.18	0%	20°C	-2.8°C	0.5mm	100%	0cm	5°	20°C	1.4mm	0kPa	760m	3.7m/s	0.21m/s
18:00 Night	0.16	0%	19°C	-2.3°C	0.8mm	98%	0cm	-9.8°	20°C	0.9mm	0.05kPa	3520m	2.4m/s	0.96m/s
19:00 Night	0.15	0%	19°C	-1.9°C	1.4mm	95%	0cm	-25°	20°C	1.4mm	0.11kPa	3060m	3.6m/s	0.65m/s
20:00 Night	0.17	1%	19°C	-1.3°C	1.6mm	93%	0cm	-39°	20°C	1.6mm	0.16kPa	4000m	1.1m/s	0.41m/s
21:00 Night	0.19	1%	18°C	-1°C	0.5mm	93%	0cm	-54°	20°C	0.5mm	0.16kPa	15980m	1.4m/s	0.63m/s
22:00 Night	0.19	1%	18°C	-0.9°C	0mm	94%	0cm	-69°	19°C	0mm	0.13kPa	31180m	2.7m/s	1.3m/s
23:00 Night	0.18	0%	18°C	-1.3°C	0mm	95%	0cm	-83°	19°C	0mm	0.11kPa	2420m	3.6m/s	1.6m/s
Thu, Oct 8, 2026Sunrise 05:24 · Sunset 17:22
24:00 Night	0.17	0%	17°C	-1.4°C	0mm	94%	0cm	-80°	18°C	0mm	0.13kPa	2220m	4.1m/s	1.9m/s
01:00 Night	0.16	0%	17°C	-1.5°C	0mm	92%	0cm	-66°	18°C	0mm	0.17kPa	3100m	4.5m/s	2.2m/s
02:00 Night	0.14	0%	17°C	-1.3°C	0mm	91%	0cm	-51°	18°C	0mm	0.19kPa	2640m	5m/s	2.4m/s
03:00 Night	0.13	0%	17°C	-1.3°C	0mm	89%	0cm	-36°	18°C	0mm	0.23kPa	1680m	6m/s	2.7m/s
04:00 Night	0.12	0%	16°C	-1.3°C	0mm	87%	0cm	-22°	19°C	0mm	0.28kPa	1020m	6.7m/s	2.9m/s
05:00 Night	0.11	0%	16°C	-1.2°C	0mm	84%	0cm	-6.8°	19°C	0mm	0.34kPa	920m	6.6m/s	2.9m/s
06:00	0.11	0%	16°C	-1°C	0mm	82%	0cm	7.9°	19°C	0mm	0.4kPa	1740m	6.7m/s	2m/s
07:00	0.12	0%	17°C	-2.2°C	0mm	80%	0cm	22°	20°C	0mm	0.48kPa	11740m	4.6m/s	1.1m/s
08:00	0.11	1%	17°C	-2.7°C	0mm	70%	0cm	37°	23°C	0mm	0.82kPa	70040m	3.3m/s	0.16m/s
09:00	0.14	1%	17°C	-3.4°C	0mm	65%	0cm	51°	24°C	0mm	1.1kPa	70040m	4.2m/s	0.81m/s
10:00	0.23	1%	17°C	-3.6°C	0mm	60%	0cm	64°	25°C	0mm	1.3kPa	9900m	7.2m/s	2.2m/s
11:00	0.2	1%	18°C	-3.5°C	0.3mm	63%	0cm	73°	25°C	1.3mm	1.2kPa	2500m	7.9m/s	2.5m/s
12:00	0.24	1%	19°C	-3.7°C	0.6mm	86%	0cm	72°	22°C	3.2mm	0.36kPa	2900m	7.6m/s	1.4m/s
13:00	0.48	1%	20°C	-3.7°C	0.6mm	83%	0cm	61°	23°C	1.8mm	0.47kPa	4760m	4.9m/s	0.92m/s
14:00	0.48	0%	20°C	-4°C	0.2mm	90%	0cm	48°	22°C	0.9mm	0.26kPa	3520m	6.6m/s	1.9m/s
15:00	0.48	0%	20°C	-3.7°C	0.5mm	95%	0cm	34°	21°C	1.3mm	0.12kPa	2120m	6.5m/s	1.6m/s
16:00	0.35	0%	20°C	-2.9°C	0.2mm	96%	0cm	19°	20°C	0.7mm	0.1kPa	3760m	5.6m/s	0.69m/s
17:00	0.25	0%	20°C	-2.4°C	0.1mm	100%	0cm	4.9°	20°C	1.4mm	0kPa	5720m	3.8m/s	1m/s
18:00 Night	0.19	0%	20°C	-2.2°C	0.2mm	98%	0cm	-9.9°	20°C	0.3mm	0.05kPa	11380m	3.1m/s	0.25m/s
19:00 Night	Unavailable	1%	19°C	-1.9°C	0.1mm	98%	0cm	-25°	20°C	0.1mm	0.05kPa	16900m	1.5m/s	0.32m/s
20:00 Night	Unavailable	1%	19°C	-1.5°C	0mm	95%	0cm	-39°	20°C	0mm	0.11kPa	28820m	2.3m/s	0.9m/s
21:00 Night	Unavailable	2%	18°C	-1.5°C	0mm	92%	0cm	-54°	20°C	0mm	0.18kPa	45080m	1.9m/s	0.27m/s
22:00 Night	Unavailable	2%	18°C	-1.6°C	0mm	92%	0cm	-69°	19°C	0mm	0.18kPa	43580m	1.6m/s	0.75m/s
23:00 Night	Unavailable	1%	18°C	-1.5°C	0mm	93%	0cm	-83°	19°C	0mm	0.15kPa	51000m	2.7m/s	1.3m/s
Fri, Oct 9, 2026Sunrise 05:24 · Sunset 17:22
24:00 Night	Unavailable	1%	18°C	-1.1°C	0mm	95%	0cm	-80°	18°C	0mm	0.11kPa	45300m	3.5m/s	1.6m/s
01:00 Night	Unavailable	1%	18°C	-0.8°C	0mm	96%	0cm	-66°	18°C	0mm	0.08kPa	8260m	3.8m/s	1.7m/s
02:00 Night	Unavailable	2%	17°C	-0.5°C	0mm	96%	0cm	-51°	18°C	0mm	0.08kPa	1180m	4.1m/s	1.9m/s
03:00 Night	Unavailable	2%	17°C	-0.4°C	0mm	95%	0cm	-36°	18°C	0mm	0.1kPa	480m	5.5m/s	2.5m/s
04:00 Night	Unavailable	2%	17°C	-0.2°C	0mm	93%	0cm	-22°	18°C	0mm	0.14kPa	320m	5.8m/s	2.6m/s
05:00 Night	Unavailable	3%	17°C	0°C	0mm	92%	0cm	-6.8°	18°C	0mm	0.16kPa	340m	5.7m/s	2.4m/s
06:00	Unavailable	3%	17°C	-0.4°C	0mm	91%	0cm	7.9°	18°C	0mm	0.19kPa	340m	6m/s	2.7m/s
07:00	Unavailable	10%	18°C	-2.3°C	0mm	90%	0cm	22°	20°C	0mm	0.23kPa	480m	5.9m/s	1.7m/s
08:00	Unavailable	17%	18°C	-3.4°C	0mm	77%	0cm	37°	22°C	0mm	0.62kPa	11780m	4.2m/s	1m/s
09:00	Unavailable	24%	18°C	-3.8°C	0mm	72%	0cm	51°	24°C	0mm	0.81kPa	14700m	5.2m/s	0.71m/s
10:00	Unavailable	20%	19°C	-4°C	0mm	66%	0cm	64°	26°C	0mm	1.1kPa	20400m	5.6m/s	1.4m/s
11:00	Unavailable	15%	18°C	-3.9°C	0.1mm	66%	0cm	73°	25°C	0.5mm	1.1kPa	7200m	8.4m/s	2.8m/s
12:00	Unavailable	11%	19°C	-4.2°C	0.3mm	73%	0cm	71°	24°C	0.5mm	0.81kPa	9760m	8.5m/s	1.8m/s
13:00	Unavailable	7%	20°C	-3.8°C	0mm	76%	0cm	61°	24°C	0.1mm	0.71kPa	10200m	6.6m/s	2m/s
14:00	Unavailable	4%	19°C	-3.7°C	0.1mm	89%	0cm	48°	21°C	4.3mm	0.27kPa	3240m	7.7m/s	1.3m/s
15:00	Unavailable	0%	19°C	-3.6°C	0.6mm	87%	0cm	34°	22°C	0.9mm	0.33kPa	5720m	4.8m/s	1.1m/s
16:00	Unavailable	0%	19°C	-3.4°C	0.2mm	90%	0cm	19°	21°C	0.8mm	0.25kPa	11520m	4.8m/s	1.1m/s
17:00	Unavailable	0%	19°C	-2.7°C	0.2mm	93%	0cm	4.8°	20°C	0.3mm	0.17kPa	11940m	3.9m/s	0.4m/s
18:00 Night	Unavailable	0%	19°C	-2.1°C	0mm	93%	0cm	-10°	20°C	0mm	0.17kPa	28800m	1.9m/s	0.68m/s
19:00 Night	Unavailable	0%	19°C	-1.9°C	0.1mm	93%	0cm	-25°	20°C	0.1mm	0.16kPa	8100m	2.1m/s	0.79m/s
20:00 Night	Unavailable	0%	19°C	-1.9°C	0.1mm	92%	0cm	-40°	20°C	0.1mm	0.19kPa	23860m	1.9m/s	0.75m/s
21:00 Night	Unavailable	0%	19°C	-1.8°C	0mm	93%	0cm	-54°	20°C	0mm	0.16kPa	37000m	1.9m/s	0.8m/s
22:00 Night	Unavailable	0%	18°C	-1.9°C	0mm	95%	0cm	-69°	19°C	0mm	0.11kPa	9460m	3.6m/s	1.7m/s
23:00 Night	Unavailable	0%	18°C	-1.9°C	0mm	94%	0cm	-83°	19°C	0mm	0.13kPa	52340m	4.3m/s	2m/s
Sat, Oct 10, 2026Sunrise 05:24 · Sunset 17:21
24:00 Night	Unavailable	0%	18°C	-1.8°C	0mm	93%	0cm	-80°	19°C	0mm	0.15kPa	45120m	4.2m/s	1.8m/s
01:00 Night	Unavailable	0%	17°C	-1.6°C	0mm	91%	0cm	-66°	19°C	0mm	0.19kPa	14320m	4m/s	1.8m/s
02:00 Night	Unavailable	1%	17°C	-1.6°C	0mm	90%	0cm	-51°	19°C	0mm	0.22kPa	5400m	4.2m/s	2m/s
03:00 Night	Unavailable	1%	17°C	-1.9°C	0mm	90%	0cm	-36°	18°C	0mm	0.21kPa	1040m	4.4m/s	2.1m/s
04:00 Night	Unavailable	1%	17°C	-1°C	0mm	90%	0cm	-22°	18°C	0mm	0.21kPa	680m	4.5m/s	2m/s
05:00 Night	Unavailable	2%	16°C	-0.4°C	0mm	91%	0cm	-6.8°	18°C	0mm	0.18kPa	560m	4.7m/s	2.3m/s
06:00	Unavailable	2%	16°C	-0.8°C	0mm	89%	0cm	7.9°	18°C	0mm	0.23kPa	480m	5.4m/s	2.4m/s
07:00	Unavailable	5%	17°C	-1.7°C	0mm	85%	0cm	22°	20°C	0mm	0.35kPa	620m	5.6m/s	1.8m/s
08:00	Unavailable	8%	17°C	-2.1°C	0mm	70%	0cm	37°	23°C	0mm	0.84kPa	15880m	4.5m/s	0.3m/s
09:00	Unavailable	11%	18°C	-2.5°C	0mm	65%	0cm	51°	25°C	0mm	1.1kPa	70280m	4.8m/s	1.2m/s
10:00	Unavailable	10%	18°C	-3.5°C	0mm	65%	0cm	63°	25°C	0mm	1.1kPa	10640m	6.9m/s	2m/s
11:00	Unavailable	8%	17°C	-4.4°C	0.1mm	59%	0cm	72°	26°C	0.4mm	1.3kPa	4060m	8.4m/s	2.9m/s
12:00	Unavailable	7%	20°C	-4.6°C	0.1mm	85%	0cm	71°	22°C	4.6mm	0.4kPa	2300m	11m/s	3.2m/s
13:00	Unavailable	5%	20°C	-4.3°C	1.1mm	92%	0cm	61°	22°C	5.3mm	0.21kPa	2260m	8.9m/s	1.7m/s
14:00	Unavailable	3%	20°C	-3.2°C	0.8mm	98%	0cm	48°	21°C	2.7mm	0.05kPa	4120m	6.2m/s	1.1m/s
15:00	Unavailable	1%	20°C	-2.2°C	0.2mm	97%	0cm	33°	20°C	3.1mm	0.07kPa	2200m	5.3m/s	1.4m/s
16:00	Unavailable	1%	19°C	-1.9°C	0.8mm	99%	0cm	19°	20°C	3.8mm	0.02kPa	3760m	5.3m/s	0.97m/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 San José.

Explore Fog Hunter conditions across Costa Rica →

Recorded match history

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

Last 30 days

recorded matching windows · 77% average confidence

Last 90 days

120

recorded matching windows · 79% average confidence

Last 365 days

180

recorded matching windows · 80% average confidence

Most frequent recorded start hour

19:00 local time, shared by 46 of 180 matches recorded in the last 365 days.

Most represented month

August, with 56 of 180 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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