Guarujá Weather in September
September in Guarujá sees daytime temperatures around 23°C (73°F) and lows of 19°C (66°F) at night. With around 153 mm (6 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Guarujá in September
Typically, about 14 days will experience rainfall, with an average of 153 mm (6 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Guarujá in September
Expect highs of 23°C (73°F) in Guarujá in September, with nights dropping to around 19°C (66°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 19°C (66°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Guarujá in September
The month has fewer sunny days, with around 90 hours of sunshine.If you prefer dry days with pleasant temperatures, August typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Brazil, check out our Guarujá's climate page.
Guarujá Temperature in September
Min Temperature
19°C (66°F)
Max Temperature
23°C (73°F)
Chance of Rain
47%
Precipitation
153 mm (6 in)
Rainy days
14 days
Humidity
82% *
Sunshine
90 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Guarujá typically stay consistent throughout September, with daily highs averaging around 23°C (73°F). Nights are pleasant, with lows around 15°C (59°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Guarujá in September
Browse day-by-day weather records for Guarujá spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guarujá historical weather extremes in September
Our historical data for Guarujá spans 1976 to 2025, revealing these weather extremes.
- Guarujá recorded its highest September temperature of 39°C (102°F) on September 18, 2015.
- The coldest September day was on September 14, 1990, with a maximum of 14°C (57°F).
- Nighttime temperatures dropped to 6°C (43°F) on September 6, 2006, marking the coldest September night on record.
Best Places in Brazil in September
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in September →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Guarujá in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Guarujá 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 Brazil, check out our Guarujá's climate page.
Temperature Rainfall Sunshine Humidity
See the full Guarujá climate overview or explore weather in Brazil.
