Global CityIntelligence

Climate

Climate in San José

San José, Costa Rica has a tropical climate. The annual average temperature is about 26.3°C and the city receives roughly 2498 mm of precipitation across 226 rainy days a year, with around 557 hours of sunshine. The warmest month is Jul (highs near 31.3°C) and the coldest is Jan (lows near 21.4°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Climate zone
Tropical
Comfort score
52/100

Climate overview

San José, Costa Rica has a tropical climate. The annual average temperature is about 26.3°C and the city receives roughly 2498 mm of precipitation across 226 rainy days a year, with around 557 hours of sunshine. The warmest month is Jul (highs near 31.3°C) and the coldest is Jan (lows near 21.4°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Climate zone

Köppen-style classification derived deterministically from latitude and regional precipitation regime.

Climate zone

San José is classified as Tropical. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Average temperatures

Annual averages and seasonal extremes.

Average temperatures

  • Annual average26.3°C
  • Warmest monthJul (31.3°C)
  • Coldest monthJan (21.4°C)
  • Comfort score52/100

Rainfall overview

Annual precipitation and how it is distributed across the year.

Rainfall overview

San José receives about 2498 mm of precipitation a year over roughly 226 rainy days. The wettest month is Oct and the driest is Feb.

Sunshine overview

Estimated annual sunshine and its seasonal pattern.

Sunshine overview

San José sees an estimated 557 hours of sunshine a year, concentrated in the warmer months around Jul.

Monthly climate table

Month-by-month estimates of temperature, rainfall, rainy days, and sunshine.

Monthly climate table

San José monthly climate table
MonthHighLowRainRainy DaysSunshine
Jan29.4°C21.4°C153 mm1475 h
Feb29.5°C21.5°C143 mm1386 h
Mar29.9°C21.9°C163 mm1568 h
Apr30.3°C22.3°C204 mm1933 h
May30.8°C22.8°C245 mm2234 h
Jun31.1°C23.1°C245 mm2235 h
Jul31.3°C23.3°C224 mm2035 h
Aug31.1°C23.1°C224 mm2035 h
Sep30.8°C22.8°C245 mm2234 h
Oct30.3°C22.3°C265 mm2433 h
Nov29.9°C21.9°C214 mm1932 h
Dec29.5°C21.5°C173 mm1657 h

Best months to visit

Months with the mildest temperatures and lower rainfall, by the deterministic comfort heuristic. Not a tourism ranking.

Best months to visit

By temperature and rainfall, the most comfortable months in San José are Feb, Jan, Mar. Conditions vary year to year — verify with a current forecast before booking.

Seasonal summary

Average conditions by season.

Seasonal summary

  • Winter

    29°C / 21°C

    469 mm rain

  • Spring

    30°C / 22°C

    612 mm rain

  • Summer

    31°C / 23°C

    693 mm rain

  • Autumn

    30°C / 22°C

    724 mm rain

Climate comfort score

A 0–100 composite of temperature balance, rainfall, sunshine, seasonality, and winter/summer extremes; higher means more comfortable. Used consistently across the platform.

Climate comfort score

San José has a climate comfort score of 52/100, a moderate year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

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