September in San Juan: afternoons around 94°F, nights around 76°F. Chocolate and cheese are the two to route to an address where someone can bring the box straight in; cookie, nut, coffee and spa baskets shrug off an afternoon on the step.
Heat (April, May, June, July, August, September and October). Afternoons average 85°F or more, peaking near 100°F in August. Send chocolate, cheese and fresh fruit to a workplace or a front desk in these months; baked goods, nuts, coffee, tea and spa baskets can take a doorstep drop.
Wettest months (September and June). Around 4.6 and 3.1 inches of rain on average. Boxes are sealed, not waterproof: a covered porch or a workplace address keeps the packaging presentable.
For a September gift that cannot wait on a hot step, the same-day flowers on this page are the surer choice: a local florist brings them to the door and hands them over.
Normals: NOAA National Centers for Environmental Information, 1991 to 2020, Mcallen Miller Intl Ap station, 6.2 miles from San Juan. Heat: average high 85°F or more. Freezing: average low 32°F or less. Snow: 2 inches or more in the month. Wettest: the two months with the most rain.