Middle of the wetter season · Weather & things to do
Ponce in September
Little changes in Ponce from August: highs stay near 87°F (31°C), lows near 80°F (26°C), and about 4.3 in (109 mm) of rain falls.
With a comfort score of 58/100 (12th of 12), it's one of the toughest months, held back mainly by cloud cover.
- Avg high
- 87°F (31°C)
- Avg low
- 80°F (26°C)
- Rain
- 4.3 in (109 mm)
- Humidity
- 78%
- Cloud cover
- 68%
- Daylight
- ~12 h 06 min
- Comfort score
- 58/100 · Fair
What September feels like
Afternoons run hot at about 87°F (31°C), which leaves mornings and evenings as the time for walking.
Even at night it stays warm, around 80°F (26°C).
Humidity averages 78%, so the air feels sticky and the heat feels stronger than the thermometer says.
Showers are part of the month, adding up to about 4.3 in (109 mm).
Plan around September
September is one of the lower-scoring months here; the best are December – March.
- Start of the wettest three-month stretch (September – November), which brings about 13.0 in (330 mm) in total.
- Comfort holds steady from August (60 → 58/100).
- Our Old San Juan & Ponce route is planned for Dec – mid-Jan, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- Light, breathable clothes87°F afternoons
- Sunscreen, sunglasses and a hathigh UV on clear days
- Refillable water bottleeasy to dehydrate in the heat
- Quick-dry fabrics78% average humidity
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Ponce in September
Afternoons run hot (87°F), so these picks mix early-start outdoor spots with cool indoor breaks.
Museo de Arte de Ponce
Edward Durell Stone building holding one of the Caribbean's best European art collections, including Leighton's Flaming June.
King's Cream
Long-running ice cream stand on the plaza, known for fruit flavors such as coconut, passion fruit and almond.
Why now Go early — afternoons average 87°F.
Castillo Serralles
1930s Spanish Revival mansion of the Don Q rum family on El Vigia hill, with gardens and views over the city.
Why now Best first thing, before the 87°F afternoon heat.
Cruceta del Vigia
Cross-shaped observation tower on the hill where lookouts once watched for ships, with views of Ponce and the Caribbean.
Hacienda Buena Vista
Restored 19th-century coffee plantation in the hills north of Ponce, with working water-powered machinery and forest trails.
Nearby in September
- Old San Juan in September~46 mi · highs 86°F, 6.4 in rain · similar daytime temperatures, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Ponce in September: quick answers
Is September a good time to visit Ponce?
It's one of the tougher months here, scoring 58/100, held back mainly by cloud cover. The best months are December – March. Expect highs of 87°F (31°C) and 4.3 in (109 mm) of rain.
How hot is Ponce in September?
Average highs are 87°F (31°C) and average lows 80°F (26°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Ponce in September?
Some: about 4.3 in (109 mm) of rain falls across September on average, the 3rd-wettest month of the year. The annual total is about 35.4 in (899 mm).
What should I pack for Ponce in September?
Bring light, breathable clothes (87°F afternoons), sunscreen, sunglasses and a hat (high UV on clear days), refillable water bottle (easy to dehydrate in the heat), quick-dry fabrics (78% average humidity) and packable rain jacket or umbrella (a shower or two is likely).
Planning Ponce in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.