Live Weather & Forecast
Weather in San Isidro
Heredia, Costa Rica · Real-time conditions & 3-day outlook
27°C
Feels like 26°C
81°F / Feels 79°F
Partly cloudy
San Isidro, Heredia
🌞 Daytime
Updated: 2026-05-13 14:45
Humidity
28%
Wind
15.8 km/h W
Wind Gust
18.2 km/h
Pressure
1015 mb
Visibility
10 km
UV Index
8.3
(Very High)
Precipitation
0 mm
Cloud Cover
75%
Dew Point
5.7°C
Wind Degree
273°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
108.9 μg/m³
NO₂
1.9 μg/m³
O₃
77 μg/m³
SO₂
1.2 μg/m³
PM 2.5
3.4 μg/m³
PM 10
5.3 μg/m³
Today's Hourly Forecast
24-hour breakdown for San Isidro, Heredia
12 AM
20°
Clear
1 AM
19°
Clear
2 AM
18°
Clear
3 AM
17°
Clear
4 AM
17°
Clear
5 AM
16°
Clear
6 AM
16°
Clear
7 AM
15°
Sunny
8 AM
17°
Sunny
9 AM
19°
Sunny
10 AM
21°
Sunny
11 AM
22°
Sunny
12 PM
24°
Sunny
1 PM
25°
Sunny
2 PM
27°
Partly cloudy
3 PM
26°
Partly Cloudy
4 PM
27°
Partly Cloudy
5 PM
27°
Partly Cloudy
6 PM
26°
Partly Cloudy
7 PM
25°
Partly Cloudy
8 PM
24°
Partly Cloudy
9 PM
22°
Partly Cloudy
10 PM
20°
Partly Cloudy
11 PM
19°
Clear
3-Day Forecast
Daily overview for San Isidro, Heredia
Today
Sunny
27°
/
15°
🌧️ 0% chance of rain
💧 Avg. humidity: 39%
💨 Max wind: 21.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 8.3
🌅 Sunrise: 06:55 AM
🌇 Sunset: 09:06 PM
🌙 Waning Crescent
🌑 Moon: 19% lit
Thu, May 14
Sunny
27°
/
16°
🌧️ 0% chance of rain
💧 Avg. humidity: 39%
💨 Max wind: 27.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 9.1
🌅 Sunrise: 06:54 AM
🌇 Sunset: 09:07 PM
🌙 Waning Crescent
🌑 Moon: 11% lit
Fri, May 15
Patchy rain nearby
27°
/
16°
🌧️ 74% chance of rain
💧 Avg. humidity: 46%
💨 Max wind: 28.8 km/h
🌧️ Total precip: 0.66 mm
☀️ UV Index: 8.2
🌅 Sunrise: 06:53 AM
🌇 Sunset: 09:08 PM
🌙 Waning Crescent
🌑 Moon: 5% lit
Best Time to Visit San Isidro
Plan your trip to San Isidro, Costa Rica around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in San Isidro?
Current conditions in San Isidro: Partly cloudy, temperature 27°C, humidity 28%.
What is the best time to visit San Isidro?
The best time to visit San Isidro is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in San Isidro?
San Isidro is located at approximately 38.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in San Isidro?
The wettest period in San Isidro is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to San Isidro?
For visits to San Isidro during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is San Isidro in?
San Isidro is located in Costa Rica, in the state of Heredia.
What are the public holidays in San Isidro in 2026?
View the 2026 public holidays for San Isidro on our Holidays page.
What are the GPS coordinates used for the weather forecast in San Isidro?
The weather forecast for San Isidro uses coordinates 38.1708, -0.8387.
What is the current temperature outside in San Isidro?
The current outdoor temperature in San Isidro is 27°C (81°F) with partly cloudy.
What is the hourly weather forecast for San Isidro today?
Today's hour-by-hour weather breakdown for San Isidro is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in San Isidro tomorrow hour by hour?
Tomorrow's forecast for San Isidro shows a high of 27°C and a low of 16°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in San Isidro?
Rain is not expected in San Isidro today. Current forecast shows no significant rain probability.
Is it going to rain today in San Isidro?
No, rain is not forecast for San Isidro today. Current conditions show clear to partly cloudy skies.