San Jose Costa Rica Climate and Weather
San José has a tropical savannah climate, marked by a distinct dry season in winter and a rainy season during the rest of the year. Thanks to its proximity to the equator and moderate elevation, temperatures stay fairly consistent year-round. The warmest months are typically mid-March to late April, with average highs exceeding 84°F (29°C). The cooler months, from late September to early December, see average highs around 81°F (27°C), while night-time temperatures remain steady near 66°F (19°C) throughout the year.
Moderate to strong breezes are common during the dry season, especially in winter and early spring. Rainfall is most likely between May and October, with June through October being the wettest period. Thunderstorms occur regularly during the rainy season but are uncommon from December to March. Humidity remains comfortable during the dry months but can rise significantly during the wetter season.
The best time to visit San José is from December to April, when weather is driest and most predictable-though this is also peak travel season for locals, and attractions can get crowded. June and July are also popular months, especially for North American and European tourists on summer holidays.