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Weather in Cartago - 14-day forecast

Detailed weather forecast for Cartago, Costa Rica: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Cartago
today🌧️ 22°💧 4.7 mm
Sun🌧️ 24°💧 8 mm
Mon🌧️ 21°💧 13.6 mm
Tue🌧️ 25°💧 2.9 mm
Wed🌧️ 25°💧 1.5 mm
Thu🌧️ 27°💧 1.2 mm
Fri🌧️ 24°💧 3.9 mm
Sat🌧️ 23°💧 9.2 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Monday 7 Sept in Cartago, the forecast high is 21°C. Typical daytime temperatures at this time of year range from 23°C to 25°C, so it will be exceptionally cool. It is cooler than 99% of similar days.

22°Cexceptionally cool
usually 23°C–25°C
cooler than 92% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally strong
24°Cnear normal
usually 23°C–25°C
night: cooler than usual rain: more rain than usual wind: exceptionally strong
21°Cexceptionally cool
usually 23°C–25°C
cooler than 99% of similar days
night: near normal rain: more rain than usual wind: exceptionally strong
25°Cwarmer than usual
usually 23°C–25°C
warmer than 82% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally strong
25°Cwarmer than usual
usually 23°C–25°C
warmer than 77% of similar days
night: near normal rain: less rain than usual wind: exceptionally strong
27°Cexceptionally warm
usually 23°C–25°C
warmer than 98% of similar days
night: warmer than usual rain: less rain than usual wind: exceptionally strong
24°Cnear normal
usually 23°C–25°C
night: near normal 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.

swipe to see more years →
20°25°30° 1981: 23°C1982: 24°C1983: 24°C1984: 23°C1985: 23°C1986: 24°C1987: 23°C1988: 23°C1989: 23°C1990: 25°C1991: 25°C1992: 24°C1993: 23°C1994: 25°C1995: 23°C1996: 24°C1997: 25°C1998: 24°C1999: 23°C2000: 23°C2001: 23°C2002: 24°C2003: 25°C2004: 24°C2005: 24°C2006: 24°C2007: 24°C2008: 24°C2009: 25°C2010: 24°C2011: 24°C2012: 24°C2013: 24°C2014: 24°C2015: 24°C2016: 24°C2017: 25°C2018: 25°C2019: 25°C2020: 25°C2021: 23°C2022: 25°C2023: 26°C2024: 26°C2025: 25°C 2026 forecast: 24°C current forecast 24°C 198119902000201020202026
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 24°C - close to the historical median.

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 - Cartago

Cartago - 14-day weather forecast infographic

Cartago 30 & 45-day weather - long-range outlook

Next 15 days · forecast
24°
around 19° 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 Cartago: the next 15 days are a numerical forecast updated daily - on average 24° by day and 19° 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.

Day-by-day forecast for Cartago

Saturday5 September 2026
🌧️22°light rain
sunrise 05:26 · sunset 17:42 · night 22° · evening 23° · rain 4.72 mm · humidity 70% · wind 3 m/s · clouds 99%
Sunday6 September 2026
🌧️24°moderate rain
sunrise 05:26 · sunset 17:42 · night 17° · evening 20° · rain 8 mm · humidity 67% · wind 3 m/s · clouds 91%
Monday7 September 2026
🌧️21°moderate rain
sunrise 05:26 · sunset 17:41 · night 18° · evening 19° · rain 13.64 mm · humidity 87% · wind 2 m/s · clouds 100%
Tuesday8 September 2026
🌧️25°light rain
sunrise 05:26 · sunset 17:41 · night 19° · evening 19° · rain 2.93 mm · humidity 59% · wind 3 m/s · clouds 100%
Wednesday9 September 2026
🌧️25°light rain
sunrise 05:26 · sunset 17:40 · night 18° · evening 19° · rain 1.46 mm · humidity 60% · wind 4 m/s · clouds 82%
Thursday10 September 2026
🌧️27°light rain
sunrise 05:26 · sunset 17:39 · night 19° · evening 19° · rain 1.23 mm · humidity 50% · wind 3 m/s · clouds 95%
Friday11 September 2026
🌧️24°light rain
sunrise 05:26 · sunset 17:39 · night 18° · evening 19° · rain 3.87 mm · humidity 69% · wind 3 m/s · clouds 52%
Saturday12 September 2026
🌧️23°moderate rain
sunrise 05:26 · sunset 17:38 · night 18° · evening 19° · rain 9.18 mm · humidity 78% · wind 3 m/s · clouds 50%
Sunday13 September 2026
🌧️24°moderate rain
sunrise 05:26 · sunset 17:37 · night 19° · evening 20° · rain 10.5 mm · humidity 76% · wind 2 m/s · clouds 99%
Monday14 September 2026
🌧️21°heavy rain
sunrise 05:26 · sunset 17:37 · night 19° · evening 19° · rain 29.88 mm · humidity 92% · wind 1 m/s · clouds 91%
Tuesday15 September 2026
🌧️24°moderate rain
sunrise 05:25 · sunset 17:36 · night 19° · evening 20° · rain 24.87 mm · humidity 78% · wind 1 m/s · clouds 77%
Wednesday16 September 2026
🌧️22°moderate rain
sunrise 05:25 · sunset 17:36 · night 19° · evening 20° · rain 22.23 mm · humidity 90% · wind 1 m/s · clouds 52%
Thursday17 September 2026
🌧️23°moderate rain
sunrise 05:25 · sunset 17:35 · night 19° · evening 19° · rain 31.11 mm · humidity 87% · wind 2 m/s · clouds 45%
Friday18 September 2026
🌧️25°moderate rain
sunrise 05:25 · sunset 17:34 · night 20° · evening 20° · rain 7.74 mm · humidity 66% · wind 1 m/s · clouds 92%
Saturday19 September 2026
🌧️24°moderate rain
sunrise 05:25 · sunset 17:34 · night 20° · evening 20° · rain 32.1 mm · humidity 79% · wind 1 m/s · clouds 50%

UV index in Cartago - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTCartago03681111+7.1UV HIGHtoday, daily maxSPF 30-50, a hat and sunglasses are a must. Betterstay in shade between 11:00 and 15:00.Unprotected fair skin may burn in about 30 min7Sat5.099Sun6.095Mon7.099Tue8.099Wed9.099Thu10.099Fri11.098Sat12.099Sun13.098Mon14.098Tue15.097Wed16.097Thu17.098Fri18.097Sat19.098Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Cartago is 7 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Cartago weather through the year

Cartago - annual climate
Upcoming public holidays in Costa Rica: Independence Day — 15 September · Army Abolition Day — 1 December · Christmas Day — 25 December.

Nearby and related places

CurridabatAlajuela

FAQ - Cartago weather

What is the weather like in Cartago today?
Today it is about 22° during the day and 22° at night, light rain.
How far ahead can I check the forecast for Cartago?
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.