Manati Weather in September
With daytime temperatures of 31°C (88°F) and nighttime lows of 25°C (77°F), September in Manati brings very high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Manati in September
The month brings the heaviest rain of the year, often in intense bursts. Make sure to have a poncho to stay dry during the showers. You can expect rain on roughly 18 days based on historical data, averaging 164 mm (6.5 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Manati in September
In September, expect very high temperatures in Manati, with highs of 31°C (88°F) and lows of 25°C (77°F) at night. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Manati in September
Expect a lot of sunshine this month, with about 236 hours of sun. These sunny conditions add to the overall experience.September in Manati has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
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 Manati's climate page.
Manati Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Chance of Rain
59%
Precipitation
164 mm (6.5 in)
Rainy days
18 days
Humidity
76% *
Sunshine
236 hours *
Percentage Sunshine
64% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Manati typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Historical weather for Manati in September
Browse day-by-day weather records for Manati spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Manati historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Manati.
- On September 29, 2011, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 24°C (75°F), recorded on September 13, 1985.
- The lowest overnight temperature recorded in September was 21°C (70°F) (September 9, 1988).
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 Manati in September
Warm but pleasant conditions in Manati in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Manati 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 Manati's climate page.
Temperature Rainfall Sunshine Humidity
See the full Manati climate overview or explore weather in Puerto Rico.
