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Weather in San José — today

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in San José

☁️

+21°

Overcast

Feels like +22° · humidity 79%

Tomorrow 12.9: +27° / +19°

🕐 23:25

Wind

8 km/h

UV index

Air (AQI)

24 · Good

Precipitation

100%

Humidity

79%

Pressure

1013 hPa

Sunrise / sunset

05:26 / 17:38

👕 What to wear today

Warm — a T-shirt and light trousers or shorts.

☂️ Take an umbrella

Weather for an activity:

🎣 fishing 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for San José

Tomorrow, 12 September, Saturday, in San José (Costa Rica): cloudy, light rain in places, warm. During the day the air will warm up to +27°, at night around +19°. Wind up to 12 km/h. High chance of rain — be sure to take an umbrella or a raincoat. Light summer clothing will do — a T-shirt and shorts or light trousers. The sun will rise at 05:26 and set at 17:38 — daylight lasts 12 hours.

Hourly weather in San José

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in San José for 14 days

Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).

▶

Tomorrow 12.9

🌦️

💧 100%

+19° +27°

Morning

⛅

+24°

Day

🌦️

+27°

Evening

🌇

+22°

Night

🌙

+19°

Rain showers · precipitation 100% · wind up to 12 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sun 13.9

⛈️

💧 100%

+19° +26°

Morning

☁️

+24°

Day

⛈️

+26°

Evening

🌇

+22°

Night

🌙

+19°

Thunderstorm · precipitation 100% · wind up to 12 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 14.9

🌦️

💧 100%

+18° +26°

Morning

🌦️

+21°

Day

🌦️

+26°

Evening

🌇

+24°

Night

🌙

+18°

Rain showers · precipitation 100% · wind up to 9 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 15.9

🌦️

💧 100%

+19° +25°

Morning

🌦️

+21°

Day

🌦️

+25°

Evening

🌇

+24°

Night

🌙

+19°

Drizzle · precipitation 100% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 16.9

🌦️

💧 100%

+19° +25°

Morning

🌦️

+21°

Day

🌦️

+25°

Evening

🌇

+24°

Night

🌙

+19°

Rain showers · precipitation 100% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 17.9

🌦️

💧 100%

+19° +26°

Morning

🌦️

+22°

Day

🌦️

+26°

Evening

🌇

+24°

Night

🌙

+19°

Rain showers · precipitation 100% · wind up to 9 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 18.9

⛈️

💧 100%

+19° +26°

Morning

⛈️

+22°

Day

⛈️

+26°

Evening

🌇

+24°

Night

🌙

+19°

Thunderstorm · precipitation 100% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sat 19.9

🌦️

💧 100%

+18° +22°

Morning

🌦️

+19°

Day

🌦️

+22°

Evening

🌇

+21°

Night

🌙

+18°

Drizzle · precipitation 100% · wind up to 12 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Sun 20.9

🌦️

💧 100%

+19° +24°

Morning

🌦️

+21°

Day

🌦️

+24°

Evening

🌇

+23°

Night

🌙

+19°

Rain showers · precipitation 100% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 21.9

🌦️

💧 100%

+18° +22°

Morning

🌦️

+19°

Day

🌦️

+22°

Evening

🌇

+21°

Night

🌙

+18°

Rain showers · precipitation 100% · wind up to 6 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tue 22.9

🌦️

💧 100%

+18° +22°

Morning

🌦️

+19°

Day

🌦️

+22°

Evening

🌇

+21°

Night

🌙

+18°

Rain showers · precipitation 100% · wind up to 8 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Wed 23.9

🌦️

💧 100%

+18° +25°

Morning

🌦️

+21°

Day

🌦️

+25°

Evening

🌇

+23°

Night

🌙

+18°

Drizzle · precipitation 100% · wind up to 8 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 24.9

🌦️

💧 100%

+18° +27°

Morning

🌦️

+21°

Day

🌦️

+27°

Evening

🌇

+25°

Night

🌙

+18°

Drizzle · precipitation 100% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

🗺️ Precipitation radar

Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.

Rain intensity:lightmoderateheavy

🎯 What to do in this weather — indices of the day

Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.

🏃 Running

0 / 100

comfort for running · Bad

🧴 UV

moderate · low

☂️ Rain

100%

likely · high

✨ Stars

18 / 100

evening visibility · Bad

🧺 Laundry drying

0 / 100

will dry outside · Bad

🚗 Car wash

0 / 100

better to wait · Bad

🌫️ Air quality

Good air

European AQI

PM2.5: 6PM10: 6O₃: 17NO₂: 13

The air is clean — you can walk and exercise outside.

🌅 Sun, moon and sea

Sunrise

05:26

Sunset

17:38

Golden hour

17:10

Daylight

12 h (-1 min vs yesterday)

San José climate by month

Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.

+24°

+17°

Jan

+26°

+17°

Feb

+26°

+17°

Mar

+27°

+18°

Apr

+25°

+18°

May

+24°

+18°

Jun

+24°

+18°

Jul

+24°

+18°

Aug

+24°

+18°

Sep

+24°

+18°

Oct

+23°

+18°

Nov

+24°

+17°

Dec

swipe sideways →

Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit

Month	Day	Night	Precipitation	What to pack and what makes the month notable (events, nuances)
January	+24°	+17°	95 mm	The most pleasant season: +24° by day, comfortable all day long. One of the wettest months (95 mm): downpours can derail plans. 😊 light summer clothing.
February	+26°	+17°	66 mm	One of the best times to visit: +26° by day, fresh nights. It's a rainy month (66 mm) — an umbrella is a must. 😊 light summer clothing. Weather-wise, one of the three best months to visit.
March	+26°	+17°	61 mm	Gentle warmth — about +26° daytime, great walking weather. Frequent rain (61 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Weather-wise, one of the three best months to visit.
April	+27°	+18°	99 mm	A comfortable month: +27° by day without exhausting heat. One of the wettest months (99 mm): downpours can derail plans. 😊 light summer clothing. This is the hottest month of the year in San José.
May	+25°	+18°	358 mm	One of the best times to visit: +25° by day, fresh nights. It's a rainy month (358 mm) — an umbrella is a must. 😊 light summer clothing.
June	+24°	+18°	381 mm	Ideal weather: +24° daytime — neither hot nor cold. Frequent rain (381 mm over the month) — keep indoor backup plans. 😊 light summer clothing. The longest daylight hours of the year — more time for everything.
July	+24°	+18°	296 mm	The most pleasant season: +24° by day, comfortable all day long. One of the wettest months (296 mm): downpours can derail plans. 😊 light summer clothing.
August	+24°	+18°	352 mm	One of the best times to visit: +24° by day, fresh nights. It's a rainy month (352 mm) — an umbrella is a must. 😊 light summer clothing.
September	+24°	+18°	401 mm	Ideal weather: +24° daytime — neither hot nor cold. Frequent rain (401 mm over the month) — keep indoor backup plans. 😊 light summer clothing.
October	+24°	+18°	431 mm	The most pleasant season: +24° by day, comfortable all day long. One of the wettest months (431 mm): downpours can derail plans. 🙂 a sweater for the evening. Statistically the wettest month of the year.
November	+23°	+18°	319 mm	One of the best times to visit: +23° by day, fresh nights. It's a rainy month (319 mm) — an umbrella is a must. 🙂 a sweater for the evening. This is the coldest month of the year.
December	+24°	+17°	162 mm	Ideal weather: +24° daytime — neither hot nor cold. Frequent rain (162 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. The shortest daylight of the year — it gets dark early.

When to visit San José

✅ Recommended time to visit

🌟 Best time: February, March, April

Daytime air+26…+27°

Precipitationoften

Why: comfortable +26…+27° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: January, May, June, July, August, December

Daytime air+24…+25°

Precipitationoften

Why: noticeable rain risk (95–381 mm/month) — pack an umbrella and backup plans.

🔴 Not the best time

🌤️ Shoulder season: September, October, November

Daytime air+23…+24°

Precipitationoften

Why: the rainy season (319–431 mm/month) — downpours almost daily.

Bottom line: the best time to visit San José is February – April, and the most comfortable months are February, March, April. The toughest months to visit are September, October, November: frequent rain.