La Tosca Weather in September
September in La Tosca brings very high temperatures, with highs of 30°C (86°F) and nights dropping to 26°C (79°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in La Tosca in September
Since this month has the highest rainfall, keep an umbrella with you to handle sudden showers. Typically, about 17 days will experience rainfall, with an average of 117 mm (4.6 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in La Tosca in September
Expect highs of 30°C (86°F) in La Tosca in September, with nights dropping to around 26°C (79°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights remain warm at around 26°C (79°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit La Tosca. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our La Tosca's climate page.
La Tosca Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
30°C (86°F)
Chance of Rain
56%
Precipitation
117 mm (4.6 in)
Rainy days
17 days
Daily Historical Temperatures
48-year average (1977-2025)
Based on our historical records, temperatures in La Tosca typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather for La Tosca in September
Browse day-by-day weather records for La Tosca spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
La Tosca historical weather extremes in September
According to our 26 years of weather records for La Tosca, the following extremes were recorded between 1999 and 2025.
- The hottest September day on record in La Tosca reached 39°C (102°F) (September 26, 2012).
- La Tosca experienced its chilliest September day on September 18, 2004, reaching only 26°C (79°F).
- The lowest overnight temperature recorded in September was 20°C (68°F) (September 30, 2014).
Best Places in Puerto Rico in September
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico in September →
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What to Wear in La Tosca in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.What To Do in La Tosca in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our La Tosca's climate page.
See the full La Tosca climate overview or explore weather in Puerto Rico.
