October in San Juan, the capital of Puerto Rico, typically marks the latter part of the wet season. This period experiences high humidity and average temperatures ranging from the low 80s Fahrenheit (high 20s Celsius) during the day to the mid-70s Fahrenheit (low 20s Celsius) at night. Rainfall is common, with short, heavy showers interspersed with periods of sunshine. This contributes to the lush tropical environment and can impact outdoor activities.
Understanding the prevailing climatic conditions during this month is crucial for travelers planning visits to San Juan. Packing appropriate clothing for both warm, sunny days and potential downpours is essential. The information also assists in making informed decisions regarding scheduled excursions and outdoor activities. Historically, October falls within the Atlantic hurricane season, though the likelihood of a direct hit is statistically lower than in earlier months. Remaining aware of weather forecasts and any potential advisories is recommended.