Cities / Costa Rica / Alajuela Province

23°

🌦️ San Isidro weather

Light rain. Light rain starting around 12:45pm.

Feels like 26° Wind 11 km/h NE Humidity 72% UV 0 Air Fair 05:27 - 17:44

Right now it is 23° in San Isidro with light rain, it feels more like 26° and today's high is 23° with an overnight low of 16°. The sun rises at 05:27 and sets at 17:44, giving 12h 17m of daylight. Over the coming week highs range from 20° to 23° - a steady stretch with little day-to-day change.

San Isidro is in Alajuela Province, Costa Rica, sitting 1,353 m above sea level. Local time is America/Costa_Rica (UTC−6), and every time on this page is shown in it.

Next 24 hours - temperature

14° 19° 24° 23° 15° 12:00 · 23.2° · 0.1 mm 13:00 · 22.7° · 0.2 mm 14:00 · 22.1° · 0.1 mm 15:00 · 21.1° · 0.1 mm 16:00 · 19° · 0.1 mm 17:00 · 18.3° · 0.1 mm 18:00 · 17.2° · 0 mm 19:00 · 17.3° · 0 mm 20:00 · 17.1° · 0 mm 21:00 · 17.2° · 0 mm 22:00 · 16.3° · 0 mm 23:00 · 15.9° · 0 mm 00:00 · 15.6° · 0 mm 01:00 · 15.3° · 0 mm 02:00 · 15° · 0 mm 03:00 · 14.8° · 0 mm 04:00 · 14.8° · 0 mm 05:00 · 14.9° · 0 mm 06:00 · 15.5° · 0 mm 07:00 · 17.1° · 0 mm 08:00 · 18.6° · 0 mm 09:00 · 20.4° · 0 mm 10:00 · 21.6° · 0 mm 11:00 · 21.7° · 0.2 mm

Precipitation

12:00 · 0.1 mm 12:00 13:00 · 0.2 mm 14:00 · 0.1 mm 15:00 · 0.1 mm 15:00 16:00 · 0.1 mm 17:00 · 0.1 mm 18:00 · 0 mm 18:00 19:00 · 0 mm 20:00 · 0 mm 21:00 · 0 mm 21:00 22:00 · 0 mm 23:00 · 0 mm 00:00 · 0 mm 00:00 01:00 · 0 mm 02:00 · 0 mm 03:00 · 0 mm 03:00 04:00 · 0 mm 05:00 · 0 mm 06:00 · 0 mm 06:00 07:00 · 0 mm 08:00 · 0 mm 09:00 · 0 mm 09:00 10:00 · 0 mm 11:00 · 0.2 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
12:00 🌦️ 23.2° 23.4° 0.1 mm Light rain
13:00 🌦️ 22.7° 23.2° 0.2 mm Light rain
14:00 🌦️ 22.1° 22.4° 0.1 mm Light rain
15:00 🌦️ 21.1° 21.2° 0.1 mm Light rain
16:00 🌦️ 19° 19.5° 0.1 mm Light rain
17:00 🌦️ 18.3° 19.1° 0.1 mm Light rain
18:00 ☁️ 17.2° 18° - Overcast
19:00 ☁️ 17.3° 18.1° - Overcast
20:00 ☁️ 17.1° 18.1° - Overcast
21:00 ☁️ 17.2° 18.3° - Overcast
22:00 16.3° 17.4° - Partly cloudy
23:00 15.9° 16.9° - Partly cloudy

Next 16 days

🌦️ TodaySeptember 3rd Avg 19° Low 16° at 23:00 High 23° at 11:00 0.8 mm rain Wind ~12 km/h
Cloudy Rain Cloudy
00:00 17°
02:00 17°
04:00 17°
06:00 16°
08:00 18°
10:00 23°
12:00 23° 0.1mm
14:00 22° 0.1mm
16:00 19° 0.1mm
18:00 17°
20:00 17°
22:00 16°
🌧️ FridaySeptember 4th Avg 18° Low 15° at 03:00 High 22° at 11:00 3.7 mm rain Wind ~11 km/h
Clear Rain Cloudy
00:00 16°
02:00 15°
04:00 15°
06:00 16°
08:00 19°
10:00 22°
12:00 22° 0.2mm
14:00 20° 1.5mm
16:00 18° 0.2mm
18:00 17°
20:00 17°
22:00 16°
🌧️ SaturdaySeptember 5th Avg 18° Low 16° at 00:00 High 21° at 13:00 8.2 mm rain Feels 23° Wind ~9 km/h
Cloudy Rain
00:00 16°
02:00 16°
04:00 16°
06:00 17°
08:00 18°
10:00 21° 0.3mm
12:00 20° 1mm
14:00 21° 1.5mm
16:00 19° 1mm
18:00 18° 0.2mm
20:00 17°
22:00 17° 0.1mm
🌧️ SundaySeptember 6th Avg 18° Low 15° at 05:00 High 22° at 10:00 17.5 mm rain Wind ~8 km/h
Cloudy Rain
00:00 17°
02:00 17°
04:00 16°
06:00 16°
08:00 20°
10:00 22° 0.6mm
12:00 21° 2mm
14:00 20° 2.4mm
16:00 19° 1.5mm
18:00 17° 0.5mm
20:00 17° 0.8mm
22:00 16° 1.5mm
🌧️ MondaySeptember 7th Avg 17° Low 16° at 05:00 High 20° at 09:00 7.4 mm rain Wind ~8 km/h
Cloudy Rain Rain Cloudy
00:00 17°
02:00 16°
04:00 16°
06:00 16°
08:00 19° 0.6mm
10:00 19° 1.3mm
12:00 18° 1.8mm
14:00 18°
16:00 18° 0.2mm
18:00 17° 0.2mm
20:00 17°
22:00 17°
🌦️ TuesdaySeptember 8th Avg 19° Low 16° at 06:00 High 23° at 12:00 0.6 mm rain Wind ~13 km/h
Cloudy Partly Cloudy Rain Cloudy
00:00 17°
02:00 16°
04:00 16°
06:00 16°
08:00 19°
10:00 22°
12:00 23°
14:00 22° 0.2mm
16:00 19°
18:00 17°
20:00 17°
22:00 18°
🌦️ WednesdaySeptember 9th Avg 18° Low 17° at 03:00 High 21° at 14:00 0.6 mm rain Wind ~13 km/h
Cloudy Rain Cloudy
00:00 18°
02:00 17°
04:00 17°
06:00 17°
08:00 19°
10:00 20° 0.1mm
12:00 20° 0.1mm
14:00 21° 0.1mm
16:00 20°
18:00 17°
20:00 17°
22:00 17°
🌦️ ThursdaySeptember 10th Avg 18° Low 16° at 23:00 High 21° at 12:00 0.6 mm rain Wind ~12 km/h
Cloudy Rain Cloudy
00:00 17°
02:00 17°
04:00 17°
06:00 17°
08:00 19°
10:00 21° 0.2mm
12:00 21° 0.2mm
14:00 21°
16:00 19°
18:00 17°
20:00 16°
22:00 16°
🌦️ FridaySeptember 11th Avg 18° Low 16° at 00:00 High 23° at 12:00 2.7 mm rain Wind ~10 km/h
Cloudy Rain Cloudy
00:00 16°
02:00 16°
04:00 16°
06:00 17°
08:00 19° 0.1mm
10:00 21° 0.1mm
12:00 23° 0.1mm
14:00 21° 0.6mm
16:00 19° 0.1mm
18:00 17° 0.1mm
20:00 17°
22:00 17°
🌦️ SaturdaySeptember 12th Avg 18° Low 16° at 23:00 High 22° at 12:00 3 mm rain Wind ~11 km/h
Cloudy Rain Cloudy
00:00 17°
02:00 16°
04:00 16°
06:00 17°
08:00 19°
10:00 21° 0.1mm
12:00 22° 0.1mm
14:00 21° 0.8mm
16:00 19° 0.1mm
18:00 17° 0.1mm
20:00 17°
22:00 16°
🌧️ SundaySeptember 13th Avg 17° Low 15° at 02:00 High 21° at 14:00 6 mm rain Wind ~7 km/h
Cloudy Rain Cloudy
00:00 15°
02:00 15°
04:00 15°
06:00 16°
08:00 18°
10:00 19° 0.2mm
12:00 20° 0.2mm
14:00 21° 1.1mm
16:00 19° 0.7mm
18:00 17° 0.7mm
20:00 17°
22:00 17°
🌧️ MondaySeptember 14th Avg 18° Low 15° at 04:00 High 22° at 10:00 9 mm rain Wind ~7 km/h
Partly Cloudy Clear Rain Cloudy
00:00 16°
02:00 15°
04:00 15°
06:00 16°
08:00 19°
10:00 22° 0.2mm
12:00 21° 0.2mm
14:00 21° 1.9mm
16:00 19° 0.9mm
18:00 17° 0.9mm
20:00 17°
22:00 16°
🌧️ TuesdaySeptember 15th Avg 18° Low 15° at 05:00 High 21° at 10:00 7.5 mm rain Wind ~7 km/h
Cloudy Partly Cloudy Rain Cloudy
00:00 16°
02:00 16°
04:00 16°
06:00 16°
08:00 19°
10:00 21° 0.6mm
12:00 21° 0.6mm
14:00 20° 1.5mm
16:00 19° 0.4mm
18:00 17° 0.4mm
20:00 17°
22:00 17°
🌧️ WednesdaySeptember 16th Avg 18° Low 15° at 04:00 High 21° at 10:00 12.3 mm rain Feels 23° Wind ~6 km/h
Cloudy Partly Cloudy Rain
00:00 16°
02:00 16°
04:00 15°
06:00 16°
08:00 20°
10:00 21° 0.6mm
12:00 20° 0.6mm
14:00 19° 0.9mm
16:00 18° 1.5mm
18:00 17° 1.5mm
20:00 17° 1.1mm
22:00 17°
🌧️ ThursdaySeptember 17th Avg 18° Low 16° at 04:00 High 22° at 09:00 20.5 mm rain Feels 24° Wind ~5 km/h
Partly Cloudy Clear Rain
00:00 16°
02:00 16°
04:00 16°
06:00 16°
08:00 21°
10:00 22° 1.6mm
12:00 21° 1.6mm
14:00 20° 2.7mm
16:00 19° 0.2mm
18:00 18° 0.2mm
20:00 17° 2mm
22:00 17° 0.5mm
🌧️ FridaySeptember 18th Avg 19° Low 17° at 05:00 High 24° at 12:00 4.7 mm rain Wind ~6 km/h
Cloudy Rain Cloudy
00:00 17° 0.5mm
02:00 17°
04:00 17°
06:00 17°
08:00 20°
10:00 22°
12:00 24°
14:00 21° 1.2mm
16:00 19° 0.2mm
18:00 18° 0.2mm
20:00 18°
22:00 17°

Sun

☀️ Sunrise 05:27 · Sunset 17:44

12h 17m of daylight · America/Costa_Rica

Air quality

PM2.5 12 µg/m³ - Fair

Fine for almost everyone; unusually sensitive people may notice it on a long run.

Source: Copernicus CAMS, updated hourly.

Nearby

Tools for San Isidro

Common questions about San Isidro weather

Will it rain in San Isidro today?

Only a trace - around 0.8 mm is expected in San Isidro today, not enough to need an umbrella.

What is the temperature in San Isidro right now?

It is 23° in San Isidro right now, though it feels closer to 26°. Today runs between a low of 16° and a high of 23°.

What time is sunrise and sunset in San Isidro?

The sun rises at 05:27 and sets at 17:44 local time in San Isidro today, giving 12h 17m of daylight.

What is the air quality in San Isidro?

PM2.5 in San Isidro is currently 12 µg/m³, which counts as Fair on the European air-quality index. Fine for almost everyone; unusually sensitive people may notice it on a long run.

How accurate is the San Isidro forecast, and how far ahead does it go?

This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers San Isidro best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.

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