worldweather24°Cnear normal
usually 23°C–25°C
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
Weather in Costa Rica - today, tomorrow and 14-day forecast
Right now temperatures across Costa Rica range from 22° to 26°. Below: today's conditions city by city, a live weather map, the 14-day outlook and month-by-month climate to help you pick the best time to travel.
Country values are the median of forecasts from 3 cities; the range shows local differences. Methodology.
Weather in Costa Rica's cities today
Next days in Costa Rica
today🌧️
24°💧 6.3 mm
Sun🌧️
26°💧 10.3 mm
Mon🌧️
22°💧 13.6 mm
Tue🌧️
27°💧 3.4 mm
Wed🌧️
26°💧 1.7 mm
Thu🌧️
28°💧 1.9 mm
Fri🌧️
26°💧 4.3 mm
Sat🌧️
25°💧 9.8 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Tuesday 8 Sept in Costa Rica, the forecast high is 27°C. Typical daytime temperatures at this time of year range from 23°C to 25°C, so it will be exceptionally warm. It is warmer than 99% of similar days.
26°Cwarmer than usual
usually 23°C–25°C
warmer than 89% of similar days
night: near normal
rain: more rain than usual
wind: exceptionally strong
22°Cexceptionally cool
usually 23°C–25°C
cooler than 97% of similar days
night: exceptionally warm
rain: more rain than usual
wind: exceptionally strong
27°Cexceptionally warm
usually 23°C–25°C
warmer than 99% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
26°Cexceptionally warm
usually 23°C–25°C
warmer than 95% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
28°Cexceptionally warm
usually 23°C–25°C
warmer than 99% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
26°Cexceptionally warm
usually 23°C–25°C
warmer than 95% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 24°C by day. The coolest year was 1984 (23°C) and the warmest was 2024 (26°C). The current forecast averages 25°C - higher than in 96% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - Costa Rica
Costa Rica 30 & 45-day weather - long-range outlook
Next 15 days · forecast
25°
around 20° at night · days with rain: 15
Weeks 3-4 · avg for September
27°
around 19° at night · rain chance 85%
Weeks 5-7 · avg for October
27°
around 19° at night · rain chance 81%
The 30 & 45-day outlook for Costa Rica: the next 15 days are a numerical forecast updated daily - on average 25° by day and 20° at night. Further out we rely on multi-year climate averages: around 27° in September, and about 27° in October. Forecasts beyond two weeks are indicative only.
Today vs the next days - Costa Rica cities
| City | Today | +3 days | +7 days | Rain today |
|---|---|---|---|---|
| 🌧️ Alajuela | 26℃ | 30℃ | 27℃ | 6.8 mm |
| 🌧️ Curridabat | 24℃ | 27℃ | 25℃ | 6.3 mm |
| 🌧️ Cartago | 22℃ | 25℃ | 23℃ | 4.7 mm |
Day-by-day forecast for Costa Rica
Saturday5 September 2026
🌧️24°moderate rain
Sunday6 September 2026
🌧️26°moderate rain
Monday7 September 2026
🌧️22°moderate rain
Tuesday8 September 2026
🌧️27°light rain
Wednesday9 September 2026
🌧️26°light rain
Thursday10 September 2026
🌧️28°light rain
Friday11 September 2026
🌧️26°light rain
Saturday12 September 2026
🌧️25°moderate rain
Sunday13 September 2026
🌧️25°moderate rain
Monday14 September 2026
🌧️23°moderate rain
Tuesday15 September 2026
🌧️26°moderate rain
Wednesday16 September 2026
🌧️24°moderate rain
Thursday17 September 2026
🌧️25°heavy rain
Friday18 September 2026
🌧️26°moderate rain
Saturday19 September 2026
🌧️25°moderate rain
Air quality and smog in Costa Rica
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| San José | 4.6 | 5 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-04, 19:00).
Costa Rica weather through the year
Costa Rica weather month by month - when is the best time to go?
Weather in other countries in Central America
Public holidays in Costa Rica - when are the long weekends?
Next long weekend in Costa Rica: Independence Day (15 September, Tuesday) - Saturday–Tuesday if you take Monday off (4 days).
2026
15 SeptemberTuesday
Independence Day
long weekend + bridge day1 DecemberTuesday
Army Abolition Day
long weekend + bridge day25 DecemberFriday
Christmas Day
long weekend2027
1 JanuaryFriday
New Year's Day
long weekend25 MarchThursday
Maundy Thursday
long weekend + bridge day26 MarchFriday
Good Friday
long weekend11 AprilSunday
Juan Santamaría Day
falls on a weekend1 MaySaturday
Labour Day
falls on a weekend25 JulySunday
Annexation of the Party of Nicoya to Costa Rica
falls on a weekend2 AugustMonday
Feast of Our Lady of the Angels
long weekend15 AugustSunday
Mother's Day
falls on a weekend15 SeptemberWednesday
Independence Day
Public holidays (statutory days off) - shops, offices and some attractions may be closed. A "bridge day" is a workday between a holiday and the weekend worth taking as leave. Lunar holiday dates marked as tentative may shift by one day after the official announcement.
Calendar sources
FAQ - Costa Rica weather
What is the weather like in Costa Rica today?
Today it is about 24° during the day and 22° at night, moderate rain.
How far ahead can I check the forecast for Costa Rica?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.