Temperature
Pleasant by day, mild at night.
77°Ftypical Aug high
Typical range
San José
Costa Rica · Central America
San José is most comfortable in the drier months around January to March. Typical daytime highs run about 75-82°F year-round. The climate is warm and humid. Rainy season runs roughly August to October.
Best time to go
12 mo · Typical year
Temperature range
64°F to 82°F
Rain
18 days/mo
Sunshine
6.7 h/day
Humidity feel
Humid year-round
When to visit
Month-by-month fit
Precipitation
Rain most days.
77%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
5.1 hAug sunshine
Heat & humidity by month
Very humid air dominates most hours this month.
93%Aug share of humid air hours
Easy airWarm airHot airHumid air
Hourly comfort pattern
In August, afternoons feel about 81° and nights feel near 71°.
ComfortableWarmHotNight shading
More detailIncludes sky, daypart comfort, and wind
Cloud cover
Mostly cloudy skies.
10%Aug clear sky
ClearCloud cover
Typical August day
August late afternoons are around 73°F, easing to about 70°F in early evening.
Avg temp Typical range
Morning76°F
Feels 81°F
Rain42%
Cloud82%
Humid airVery high
Sun intensityModerate
Midday78°F
Feels 83°F
Rain85%
Cloud92%
Humid airVery high
Sun intensityStrong
Late afternoon73°F
Feels 79°F
Rain76%
Cloud95%
Humid airVery high
Sun intensityLow
Early evening70°F
Feels 75°F
Rain28%
Cloud95%
Humid airVery high
Sun intensityMinimal
Best windowWind pattern
Calm winds are typical in August.
3 mphAug Calm
Typical wind speed (mph)
Similar
Similar things to doTaipeiTaiwanSimilar things to doSan SalvadorEl SalvadorSimilar things to doPanama CityPanamaSimilar things to doSingaporeSingapore
Want a side-by-side climate view? Compare San José with Taipei.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology