San José climate
Mild Central Valley weather still requires a rain, drainage, and indoor comfort plan
Costa Rica's tourism authority describes San José, Heredia, and Cartago as temperate parts of the Central Valley. It gives the region a dry season generally from December through March, a rainy period from May through October, and around 148 rainy days. Its San José information lists an elevation near 1,149 metres and an average temperature around 24 degrees Celsius. The mild temperatures can make outdoor life inviting, but frequent rain changes surfaces, transport, mold control, and the preferred hour for errands.
The catalog's current fields show 21.5 degrees Celsius, 81 percent humidity, and AQI 22. Those readings describe a moment, not an entire year. The national weather institute's San José station at 1,172 metres records local rainfall and temperature observations, while the Central Valley's wet and dry seasons provide the wider seasonal pattern.
Inspect ventilation, roof, gutters, windows, drainage, covered walkways, mold history, laundry space, power, internet, shade, and a comfortable indoor alternative. Walk the same route in sunshine and rain. A market, hospital, library, museum, theatre, or home day can keep the week workable when a park or long errand is less appealing.
Living through the seasons
Winters are the easier season. Summer heat deserves a closer look.
- Overall Comfort
- Excellent
4.6 / 5
- Average Summer High
- 81°F
- Days Above 90°F
- 11 days/year
- Summer Feel
- Very Good
Mild · 81°F
Excellent
4.1 / 5
- Average Winter Low
- 67°F / 19°C
- Days Below Freezing
- 0 days/year
- Winter Feel
- Excellent
Very Good
Excellent
4.7 / 5
Find the route that works in rain
Travel from home to food, care, market, library, park, and indoor recreation during a heavy shower. Note shelter, surfaces, crossings, traffic, drainage, parking, and return energy.
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 84%
- Comfortable Months
- 12 months
- Solar Exposure
- 1907 peak sun hrs/yr
Poor
Excellent
Good
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- Poor
4.7 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 5.5 µg/m³ 2021-2025 modeled average
- Best Months
- Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
- Toughest Months
- None identified
- Heat Risk
- Low
- Drought Risk
- Low - Medium (0.2-0.4)
- Weather Volatility
- Strong
Good · 5.5 µg/m³ 2021-2025 modeled average
Very Good
3.9 / 5
San José in everyday life
Could San José work for you?
What may work well
- The Central Valley offers a temperate setting with a defined dry season and a recognizable wet season.
- Markets, hospitals, museums, theatres, libraries, parks, and public services provide varied indoor and outdoor options.
- Municipal stormwater information and local weather observations give a homeowner concrete questions about drainage and comfort.
What to think about
- A current temperature, humidity, or air quality field cannot represent a full season or one home.
- Rain, blocked drains, flooding, slippery surfaces, traffic, humidity, and closures can change access.
- Ventilation, roof, gutters, drainage, mold control, power, internet, and repairs can add to the annual budget.
Choose a San José home for rain, access, and comfortable indoor days
Inspect indoor comfort
Review ventilation, roof, gutters, windows, drainage, mold history, power, internet, shade, covered access, insurance, and utility history.
Repeat the main routes
Walk, ride, or drive to food, pharmacy, hospital, market, library, park, transit, family, and alternate roads while noting rain, surfaces, crossings, traffic, and return energy.
Keep a weather alternative
Pair parks and markets with museums, theatres, libraries, medical routes, home, or detours for heavy rain, flooding, closures, humidity, and a low energy day.
Questions retirees ask
What is San José's climate like?
San José sits in the temperate Central Valley. The dry season generally runs from December through March and the rainy period from May through October, with around 148 rainy days across the region. Plan for mild temperatures, humidity, heavy showers, drainage, and covered routes.
Is San José too rainy for retirement?
The rainy season changes timing and routes rather than making every day unusable. Visit during both seasons, check the route to care and shopping after rain, and choose a home with good ventilation, drainage, roof protection, and an indoor alternative.
San José offers a mild highland climate, but the best fit is an address with sound ventilation, drainage, covered access, reliable services, and a rainy day plan. The household should enjoy the dry season while knowing exactly how care, food, transit, and culture work during wet months.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk
- Open-Meteo / Copernicus CAMS
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- World Resources Institute (WRI)
Used for Drought Risk
Checked 2026-07-13
- NOAA IBTrACS
Used for Weather Volatility
Partnerships never affect rankings, scores, methodology, or inclusion.
Partner with Retirement ListsResearch and writing byGrant Gibson
How this city research is made
Retirement Lists uses documented public sources and methods to research, review, and correct city information. Read our Editorial Policy.