October weather forecast
San Juan, Dominican Republic

October signals looming changes in San Juan. There is a slight reduction in temperature compared to the preceding months, indicating the arrival of Fall. Despite the weather cooling down, there is significant rainfall, tallied at 158mm (6.22") across an average of 16 days. As the city shifts from summer to fall, October displays a combination of tropical climate and humid fall weather. It brings along the hint of changing seasons, introducing cooler temperatures.

Temperature

With the transition into October, San Juan notes an average high-temperature of a still hot 31°C (87.8°F), closely resembling September. The anticipated average low-temperature for October in San Juan, an enjoyable 18°C (64.4°F), shows a substantial deviation from the daytime maximums.

Rainfall

In San Juan, during October, the rain falls for 16 days and regularly aggregates up to 158mm (6.22") of precipitation. Throughout the year, in San Juan, there are 154 rainfall days, and 1160mm (45.67") of precipitation is accumulated.

Daylight

In San Juan, the average length of the day in October is 11h and 43min.
On the first day of the month, sunrise is at 06:35 and sunset at 18:33. On the last day of October, sunrise is at 06:45 and sunset at 18:12 AST.

Sunshine

January, May, September through December, with an average of 7h of sunshine, are months with the least sunshine in San Juan.

UV index

The average daily maximum UV index in October is 10. A UV Index value of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In October, the maximum UV index of 10 suggests these recommendations:
Don't neglect protection; skin and eyes can be burned swiftly if left exposed. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Regularly apply and reapply a broad-spectrum sunscreen with a minimum SPF 30 every two hours, or straight after swimming or an outdoor activity.