Weather in Costa Rica

• All Year
• Winter
• Spring
• Summer
• Autumn

Yearly weather

Calculations are based on the last 8 years of historical weather data.

Temperatures

• In San Jose, Costa Rica, monthly temperatures show a consistent trend with mild minimums and maximums throughout the year

• The warmest month is March, with a maximum of 81.8°F, while the coolest month appears to be November, with a maximum of 73.6°F

• Overall, temperatures remain fairly moderate, indicating a tropical climate with minimal fluctuations.

Conditions

• In San Jose, Costa Rica, there is a marked decline in sun hours from February (6.3h) to June (0.6h), indicating a shift towards a wetter, cloudier season as the rainfall increases significantly during these months, particularly in May and June.

• The precipitation levels peak in May (0.61in) and remain high throughout the rainy season from May to October, while sun hours remain at their lowest. Overall, this pattern illustrates a clear seasonal cycle where sunny days are more prevalent in the early months of the year, while the latter half is characterized by diminished sunlight and increased rainfall.

Astronomy

• In San Jose, Costa Rica, the earliest sunrise occurs in May at 05:15, while the latest sunrise is at 05:57 in January, indicating minimal variation in morning light throughout the year. The sun sets latest at 18:01 in July and earliest at 17:11 in November, leading to a significant difference in evening daylight.

• Moreover, the shortest day occurs in December with a length of 11 hours and 33 minutes, while the longest day is in June, extending to 12 hours and 41 minutes. This showcases the slight but noticeable shifts in day length as the year progresses, influenced by the region's proximity to the equator.