Cities / Costa Rica / Guanacaste Province

33°

☀️ San Juan weather

Clear sky. No rain expected in the next few hours.

Feels like 34° Wind 18 km/h NE Humidity 49% UV 0 Air Good ☀ 05:30 - 17:48

Right now it is 33° in San Juan with clear skies and today's high is 34° with an overnight low of 23°. The sun rises at 05:30 and sets at 17:48, giving 12h 18m of daylight. Over the coming week highs range from 32° to 35° - a steady stretch with little day-to-day change.

San Juan is in Guanacaste Province, Costa Rica, sitting 158 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

23° 29° 35° 35° 24° 16:00 · 32.5° · 0 mm 17:00 · 31.2° · 0 mm 18:00 · 28.4° · 0 mm 19:00 · 27° · 0 mm 20:00 · 26.2° · 0 mm 21:00 · 25.6° · 0 mm 22:00 · 25° · 0 mm 23:00 · 24.6° · 0 mm 00:00 · 24.3° · 0 mm 01:00 · 24.1° · 0 mm 02:00 · 23.9° · 0 mm 03:00 · 23.8° · 0 mm 04:00 · 23.7° · 0 mm 05:00 · 23.6° · 0 mm 06:00 · 24.3° · 0 mm 07:00 · 27° · 0 mm 08:00 · 29.5° · 0 mm 09:00 · 31.5° · 0 mm 10:00 · 33.1° · 0 mm 11:00 · 34.2° · 0 mm 12:00 · 34.6° · 0 mm 13:00 · 34.7° · 0 mm 14:00 · 33.3° · 0 mm 15:00 · 31.3° · 0.1 mm

Precipitation

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

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
16:00 ☀️ 32.5° 32.8° - Clear sky
17:00 🌤️ 31.2° 32° - Mostly clear
18:00 ⛅ 28.4° 30° - Partly cloudy
19:00 ☁️ 27° 29.3° - Overcast
20:00 ☁️ 26.2° 28.7° - Overcast
21:00 ☁️ 25.6° 28° - Overcast
22:00 ⛅ 25° 27.5° - Partly cloudy
23:00 ☀️ 24.6° 27.3° - Clear sky
00:00 ☀️ 24.3° 26.8° - Clear sky
01:00 ☀️ 24.1° 26.6° - Clear sky
02:00 ☀️ 23.9° 26.5° - Clear sky
03:00 ☀️ 23.8° 26.4° - Clear sky

Next 16 days

Today☀️ 34°23° Fri 4☁️ 35°24°0.1mm Sat 5🌧️ 33°24°14.7mm Sun 6🌧️ 32°24°20.5mm Mon 7🌦️ 33°23°0.9mm Tue 8☁️ 34°25° Wed 9⛅ 33°24° Thu 10☁️ 33°25° Fri 11🌦️ 34°24°2.1mm Sat 12☁️ 34°23° Sun 13🌧️ 33°24°9.3mm Mon 14🌧️ 33°23°13.9mm Tue 15🌧️ 34°23°8.3mm Wed 16🌧️ 31°23°6.6mm Thu 17🌧️ 33°23°10.2mm Fri 18🌧️ 34°24°9.6mm
☀️ TodaySeptember 3rd Avg 28° Low 23° at 04:00 High 34° at 13:00 Feels 36° Wind ~19 km/h
Cloudy Clear Clear Cloudy
00:00 25°
02:00 24°
04:00 23°
06:00 24°
08:00 29°
10:00 32°
12:00 34°
14:00 34°
16:00 33°
18:00 28°
20:00 26°
22:00 25°
☁️ FridaySeptember 4th Avg 28° Low 24° at 05:00 High 35° at 13:00 0.1 mm rain Feels 37° Wind ~21 km/h
Clear Cloudy
00:00 24°
02:00 24°
04:00 24°
06:00 24°
08:00 30°
10:00 33°
12:00 35°
14:00 33°
16:00 30°
18:00 28°
20:00 26°
22:00 25°
🌧️ SaturdaySeptember 5th Avg 27° Low 24° at 05:00 High 33° at 11:00 14.7 mm rain Feels 36° Wind ~9 km/h
Cloudy Rain Cloudy
00:00 24°
02:00 24°
04:00 24°
06:00 24°
08:00 29°
10:00 32°
12:00 33° 0.3mm
14:00 32° 1.9mm
16:00 28° 3.7mm
18:00 26° 1.2mm
20:00 25°
22:00 24°
🌧️ SundaySeptember 6th Avg 27° Low 24° at 05:00 High 32° at 12:00 20.5 mm rain Feels 37° Wind ~10 km/h
Partly Cloudy Cloudy Rain
00:00 24°
02:00 24°
04:00 24°
06:00 24°
08:00 28°
10:00 31°
12:00 32° 1mm
14:00 32° 2.7mm
16:00 29° 3.2mm
18:00 24° 3.7mm
20:00 25° 0.9mm
22:00 24°
🌦️ MondaySeptember 7th Avg 27° Low 23° at 03:00 High 33° at 12:00 0.9 mm rain Feels 37° Wind ~13 km/h
Cloudy Cloudy
00:00 24°
02:00 24°
04:00 23°
06:00 24°
08:00 28°
10:00 32°
12:00 33°
14:00 30°
16:00 29° 0.1mm
18:00 27°
20:00 27°
22:00 25°
☁️ TuesdaySeptember 8th Avg 28° Low 25° at 01:00 High 34° at 13:00 Wind ~23 km/h
Cloudy
00:00 25°
02:00 25°
04:00 25°
06:00 25°
08:00 28°
10:00 31°
12:00 33°
14:00 33°
16:00 31°
18:00 27°
20:00 26°
22:00 25°
⛅ WednesdaySeptember 9th Avg 28° Low 24° at 05:00 High 33° at 12:00 Wind ~22 km/h
Partly Cloudy Cloudy
00:00 25°
02:00 25°
04:00 24°
06:00 25°
08:00 28°
10:00 32°
12:00 33°
14:00 33°
16:00 31°
18:00 27°
20:00 26°
22:00 25°
☁️ ThursdaySeptember 10th Avg 28° Low 25° at 22:00 High 33° at 13:00 Wind ~29 km/h
Cloudy
00:00 25°
02:00 25°
04:00 25°
06:00 25°
08:00 29°
10:00 31°
12:00 33°
14:00 33°
16:00 31°
18:00 28°
20:00 26°
22:00 25°
🌦️ FridaySeptember 11th Avg 28° Low 24° at 03:00 High 34° at 12:00 2.1 mm rain Feels 36° Wind ~18 km/h
Clear Partly Cloudy Rain Cloudy
00:00 25°
02:00 24°
04:00 24°
06:00 25°
08:00 29°
10:00 32°
12:00 34°
14:00 33°
16:00 31° 0.7mm
18:00 27° 0.7mm
20:00 25°
22:00 25°
☁️ SaturdaySeptember 12th Avg 27° Low 23° at 05:00 High 34° at 12:00 Wind ~16 km/h
Clear Cloudy Partly Cloudy Clear Partly Cloudy
00:00 24°
02:00 24°
04:00 23°
06:00 24°
08:00 28°
10:00 32°
12:00 34°
14:00 33°
16:00 31°
18:00 27°
20:00 25°
22:00 24°
🌧️ SundaySeptember 13th Avg 27° Low 24° at 04:00 High 33° at 12:00 9.3 mm rain Feels 36° Wind ~8 km/h
Partly Cloudy Clear Rain
00:00 24°
02:00 24°
04:00 24°
06:00 24°
08:00 29°
10:00 32°
12:00 33°
14:00 32° 1.2mm
16:00 29° 1.8mm
18:00 26° 1.8mm
20:00 25° 0.1mm
22:00 24°
🌧️ MondaySeptember 14th Avg 27° Low 23° at 05:00 High 33° at 12:00 13.9 mm rain Feels 36° Wind ~7 km/h
Clear Rain
00:00 24°
02:00 24°
04:00 23°
06:00 24°
08:00 28°
10:00 32° 0.1mm
12:00 33° 0.1mm
14:00 31° 1.8mm
16:00 28° 2.4mm
18:00 26° 2.4mm
20:00 25° 0.2mm
22:00 25° 0.2mm
🌧️ TuesdaySeptember 15th Avg 27° Low 23° at 05:00 High 34° at 12:00 8.3 mm rain Feels 37° Wind ~8 km/h
Rain Cloudy Partly Cloudy Rain
00:00 25° 0.2mm
02:00 24° 0.2mm
04:00 23°
06:00 24°
08:00 27°
10:00 31°
12:00 34°
14:00 32° 0.2mm
16:00 29° 2mm
18:00 26° 2mm
20:00 25° 0.3mm
22:00 24°
🌧️ WednesdaySeptember 16th Avg 26° Low 23° at 04:00 High 31° at 12:00 6.6 mm rain Feels 34° Wind ~15 km/h
Partly Cloudy Cloudy Rain
00:00 24°
02:00 24°
04:00 23°
06:00 24°
08:00 27°
10:00 30°
12:00 31°
14:00 30° 0.6mm
16:00 28° 1.2mm
18:00 26° 1.2mm
20:00 25° 0.4mm
22:00 25°
🌧️ ThursdaySeptember 17th Avg 27° Low 23° at 05:00 High 33° at 12:00 10.2 mm rain Feels 36° Wind ~8 km/h
Clear Rain
00:00 24°
02:00 24°
04:00 24°
06:00 24°
08:00 28°
10:00 31° 0.1mm
12:00 33° 0.1mm
14:00 30° 1.9mm
16:00 28° 1.2mm
18:00 26° 1.2mm
20:00 25° 0.2mm
22:00 25°
🌧️ FridaySeptember 18th Avg 27° Low 24° at 05:00 High 34° at 12:00 9.6 mm rain Feels 37° Wind ~10 km/h
Cloudy Partly Cloudy Cloudy Rain Cloudy
00:00 25°
02:00 24°
04:00 24°
06:00 24°
08:00 28°
10:00 31°
12:00 34°
14:00 31° 1.6mm
16:00 28° 1.6mm
18:00 26° 1.6mm
20:00 25°
22:00 25°

Sun

☀️ Sunrise 05:30 · Sunset 17:48

12h 18m of daylight · America/Costa_Rica

Air quality

PM2.5 9.5 µg/m³ - Good

No reason to change your plans - open the windows.

Source: Copernicus CAMS, updated hourly.

Nearby

Jabilla Arriba · 2.4 km El Porvenir · 3.7 km Higuerón · 3.7 km Concepción · 4 km Agua Caliente · 4.6 km Jabilla Abajo · 5 km

Tools for San Juan

☔ Will it rain today? 🌅 Sunrise & sunset 🫁 Air quality 📼 Weather on this day

Common questions about San Juan weather

Will it rain in San Juan today?

No rain is in the forecast for San Juan today.

What is the temperature in San Juan right now?

It is 33° in San Juan right now. Today runs between a low of 23° and a high of 34°.

What time is sunrise and sunset in San Juan?

The sun rises at 05:30 and sets at 17:48 local time in San Juan today, giving 12h 18m of daylight.

What is the air quality in San Juan?

PM2.5 in San Juan is currently 9.5 µg/m³, which counts as Good on the European air-quality index. No reason to change your plans - open the windows.

How accurate is the San Juan 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 Juan 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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