Weather in San Juan

• All Year
• Spring
• Summer
• Autumn
• Winter

Yearly weather

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

Temperatures

• San Juan experiences a wide range of temperatures throughout the year.

• January, February, and December have the highest temperatures, often exceeding 30.0C, while June and July experience discomfort temperatures below 5.0C.

• April, May, September, October and November features comfort temperatures.

• The remaining months fall outside the comfort range but are not in the extreme discomfort range.

Conditions

• San Juan experiences a gradual decline in sun hours from January to May, reaching a low of 8.2 hours in May, before increasing again towards the end of the year, peaking at 11.8 hours in December.

• Precipitation levels are minimal throughout the year, with the highest recorded in January at 0.99mm, suggesting a generally dry climate. Overall, the city benefits from significant sunshine in the latter part of the year, while maintaining low precipitation rates year-round, providing favorable conditions for outdoor activities.

Astronomy

• In San Juan, the earliest sunrise occurs in December at 06:24, while the latest sunrise takes place in June at 08:30, highlighting the contrast between the seasons. The shortest day occurs in June with a duration of just 10 hours and 7 minutes, whereas the longest day is experienced in December, lasting 14 hours and 10 minutes.

• This significant variation in day length indicates that summer months provide much more daylight, while the winter months have considerably shorter days. Overall, the seasonal shifts result in a notable impact on the timing of both sunrise and sunset throughout the year.