The rainy season in most of Costa Rica runs roughly from early May through late November.

Quick Scoop: When is the rainy season in Costa Rica?

  • For most of the country (Pacific side and Central Valley), rainy or “green” season is generally beginning of May to end of November.
  • The heaviest rain usually comes in October and early–mid November on the Pacific side.
  • Early rainy season (May–July) often means sunny mornings with afternoon showers , not all‑day rain.
  • There is often a short “little summer ” (veranillo) with a drier spell around mid to late July.
  • The Caribbean coast (LimĂłn) follows a different pattern: it can be wet year‑round, and September–October are actually drier “summer” months there.

If you’re planning a trip, think of December–April as the dry season for most tourist areas on the Pacific side, and May–November as the rainy/green season, with regional quirks and a brief mid‑year lull in the rain.

Information gathered from public forums or data available on the internet and portrayed here.