Weather Mercedes, San José long-term weather forecast

Long-term weather forecast for Mercedes, San José for ten days.

Friday, Jan 16

22 / 20°C

1.1 mm

5 km/h

20 °C	24 °C	12 am
20 °C	22 °C	6 am
26 °C	28 °C	12 pm
22 °C	26 °C	6 pm

sunrise 5:54 am
sunset 5:33 pm

HOURLY

During the day morning cloudy, later morning partly cloudy, in the afternoon light rain showers, in the evening initially light rain showers, later overcast. The highest temperature 22 °C. Total rainfall 1.1 mm. At night the lowest temperature 20 °C. Total rainfall 0.1 mm.

Interactive map weather Costa Rica

GPS: 9.2745; -83.5797

altitude: 597 m
local time:

PLACES IN THE AREA

Weather forecast Mercedes, San José, Costa Rica extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Friday 01/16/2026
12 AM 1 AM	cloudy	20 °C 23 °C	0.0 mm	0.3 m/s 1 km/h north-northeast	1012 hPa	96 %	19 °C	53 %	0%	45%	19%	0%
6 AM 7 AM	partly cloudy	20 °C 23 °C	0.0 mm	0.2 m/s 1 km/h northeast	1012 hPa	91 %	18 °C	36 %	0%	35%	7%	0%
12 PM 1 PM	light rain showers	26 °C 29 °C	0.9 mm	1.3 m/s 5 km/h west	1011 hPa	64 %	18 °C	30 %	0%	16%	25%	0%
6 PM 7 PM	overcast	22 °C 26 °C	0.2 mm	1.0 m/s 4 km/h west	1010 hPa	93 %	20 °C	99 %	0%	98%	35%	0%
Saturday 01/17/2026
12 AM 1 AM	overcast	21 °C 25 °C	0.1 mm	0.3 m/s 1 km/h west	1011 hPa	97 %	20 °C	89 %	0%	89%	52%	0%
6 AM 7 AM	rain showers	20 °C 23 °C	2.6 mm	0.2 m/s 1 km/h north	1011 hPa	95 %	19 °C	83 %	0%	54%	21%	61%
12 PM 1 PM	heavy rain	24 °C 28 °C	8.4 mm	1.6 m/s 6 km/h west-southwest	1011 hPa	84 %	21 °C	95 %	0%	82%	39%	47%
6 PM 7 PM	cloudy	22 °C 26 °C	0.1 mm	0.5 m/s 2 km/h west-northwest	1010 hPa	94 %	20 °C	49 %	0%	37%	22%	7%

Mercedes, San José, Costa Rica - information

State: Costa Rica

GPS coordinates: 9.2745; -83.5797

Time zone: America / Costa Rica time difference in hours with time in US is -7 hours

Population: 5 467
Altitude: 597 m
The administrative part:

Provincia de San José, San José
Cantón de Pérez Zeledón, Mercedes, San José

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Weather Mercedes, San José, Costa Rica. Weather forecast Mercedes, San José.

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Data source

Weather forecast for Mercedes, San José is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Mercedes, San José

data are always in the local time

Sun and light

Jan. 16, 2026

Sunrise:	Sunset:
5:54 am	5:33 pm
Noon:	Length of day:
11:44 am	11:39
Start of civil twilight*:	End of civil twilight*:
5:31 am	5:56 pm
Start of nautical twilight*:	End of nautical twilight*:
5:06 am	6:21 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:40 am	6:47 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
01/16/2026 4:07 am	01/16/2026 3:51 pm
Next new moon:	Next full moon:
01/18/2026	02/01/2026