San Isidro

Pérez Zeledón, Provincia de San José, Costa Rica

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Current Weather

21°

Drizzle and Humid

Feels Like: 21°

Min: 20°

Max: 24°

The next few hours will be possible drizzle and humid, with today reaching 24°C and dropping to 20°C. The coming days will be rain and humid throughout the day.

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Hourly Forecast

21° 21° 20° 21° 21° 21° 22° 23° 24° 24° 23° 23° 23° 22° 22° 21° 21° 21° 21° 21° 21° 21° 21° 21°
22%
22%
22%
18%
18%
18%
26%
26%
26%
100%
100%
100%
100%
100%
100%
100%
100%
100%
86%
86%
86%
62%
62%
62%
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
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7pm
8pm
9pm
10pm
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Today
Tomorrow

Daylight Hours

05:26

Sunrise

17:24

Sunset

11 hours 57 minutes of sunlight today

Moon

Waxing Gibbous

16:49

Moonrise

04:23

Moonset

Daily Forecast

Today

20°
24°

Saturday

20°
25°

Sunday

20°
25°

Monday

20°
25°

Tuesday

20°
26°

Wednesday

20°
23°

Thursday

20°
23°

Friday

21°
23°

Saturday

20°
25°

Sunday

21°
23°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

96% Very Humid
Low High

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Weather in San Isidro today, September 25, 2026

Expect unsettled, showery conditions in San Isidro on September 25, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans. The morning carries the wetter risk, with rain chances near 100% and the highest odds around 10:00. Cloud is also thick early on, peaking near 90% around 01:00.

The temperature range runs from about 20°C up to 24°C. Relative humidity sits between 85% and 100%, reaching its peak around 20:00. Airflow remains manageable, reaching about 2.5 km/h around 12:00.

Afternoon showers stay in play, peaking near 100% around 12:00. Skies remain cluttered, with cover about 99% by 18:00. Visibility holds near 13.1 km, though it can fall to 4.8 km. The sun rises at 05:26 and sets at 17:24, for a total of 11 hours 57 minutes of sunlight today.

In short, treat September 25, 2026 in San Isidro as a damp day: pack covers, watch the wetter hours, and expect a high near 24°C.

Frequently asked questions about weather in San Isidro

How warm does it get in San Isidro?

The warmest month in San Isidro is May, with average high temperatures of 25°C. The average temperature during this period is around 23°C.

How cold does it get in San Isidro?

The coldest month in San Isidro is January, with average low temperatures of 20°C. The average temperature during this period is around 22°C.

What is the wettest time of year in San Isidro?

The wettest month in San Isidro is October, with an average of 1044mm of precipitation.

What is the driest time of year in San Isidro?

The driest month in San Isidro is February, with an average of 120mm of precipitation.

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Metric (°C, km/h)