San Ramón climate
Mild highland temperatures and heavy wet season rain make drainage, ventilation, and road access essential
A UCR and weather institute study of stations in San Ramón describes average temperatures around 22 degrees Celsius, approximately 1,950 millimetres of annual precipitation, and a dry season of about five months. The Central Valley and western Alajuela sit between Pacific and Caribbean influences, so rain can be generous even when temperatures feel comfortable.
The catalog's current fields show 21.2 degrees Celsius, 96 percent humidity, and AQI 28. Those readings describe a moment, not the whole year. IMN bulletins have recorded intense local rain in San Ramón, including 127 millimetres in one June 2025 event and 68.8 millimetres at Balsa during a September 2022 event. Treat those as documented weather events, not a promise about every season.
Inspect ventilation, roof, gutters, drainage, mold history, windows, covered walkways, laundry space, slope, power, internet, road surface, and a comfortable indoor alternative. Walk the same route in sunshine and rain. A museum, UCR activity, library, hospital, café, or home day can keep the week workable when forest paths, slopes, or roads are 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, UCR, museum, market, and indoor recreation during a heavy shower. Note shelter, surfaces, slopes, crossings, traffic, drainage, 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
- 1647 peak sun hrs/yr
Poor
Excellent
Fair
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
- 5.9 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 · 5.9 µg/m³ 2021-2025 modeled average
Very Good
3.9 / 5
San Ramón in everyday life
Could San Ramón work for you?
What may work well
- Local station research provides a useful mild temperature and wet season picture for San Ramón.
- The UCR campus, museum, cultural centre, hospital, and town services provide indoor options when weather changes.
- IMN and national risk information give a homeowner concrete questions about rain, drainage, slope, and alternate roads.
What to think about
- A current temperature, humidity, or air quality field cannot represent a full season or one home.
- Heavy rain, blocked roads, landslides, slippery surfaces, traffic, humidity, and closures can change access.
- Ventilation, roof, gutters, drainage, mold control, power, internet, road work, and repairs can add to the annual budget.
Choose a San Ramón home for rain, slope, and reliable access
Inspect indoor comfort
Review ventilation, roof, gutters, drainage, mold history, windows, power, internet, slope, road surface, covered access, insurance, and utility history.
Repeat the main routes
Walk, ride, or drive to food, pharmacy, hospital, UCR, museum, family, transit, and alternate roads while noting rain, surfaces, slopes, crossings, traffic, and return energy.
Keep a weather alternative
Pair forest destinations and outdoor activities with the museum, UCR, cultural centre, medical routes, home, or detours for heavy rain, landslides, closures, humidity, and a low energy day.
Questions retirees ask
What is San Ramón's climate like?
Local station research describes average temperatures around 22 degrees Celsius, approximately 1,950 millimetres of annual rain, and a dry season of about five months. Current fields show high humidity. Plan for mild temperatures, wet routes, drainage, ventilation, slopes, and road access.
Is San Ramón 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, stable access, and an indoor alternative.
What should I inspect before buying?
Review ventilation, roof, gutters, drainage, mold history, windows, power, internet, slope, road surface, covered access, insurance, utility history, and the routes to care, UCR, town services, family, and alternate roads.
San Ramón offers comfortable temperatures and remarkable wet forest, but the best fit is an address with sound ventilation, drainage, road access, covered routes, reliable services, and a rainy day plan. Enjoy the landscape while knowing exactly how care, food, culture, and family trips work when rain is heavy.
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
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Partner with Retirement ListsResearch and writing byGrant Gibson
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