Riobamba Weather in September
Thinking of visiting Riobamba in September? Expect moderate temperatures reaching 15°C (59°F) during the day, dropping to 4°C (39°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Riobamba in September
You can expect rain on around 11 days based on historical patterns, with 101 mm (4 in) average 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 Riobamba in September
Expect highs of 15°C (59°F) in Riobamba in September, with nights dropping to around 4°C (39°F). Conditions are often most pleasant around the middle of the day. Nights fall to 4°C (39°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Riobamba in September
The month has fewer sunny days, with around 98 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 Ecuador, check out our Riobamba's climate page.
Riobamba Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
15°C (59°F)
Chance of Rain
37%
Precipitation
101 mm (4 in)
Rainy days
11 days
Humidity
87% *
Sunshine
98 hours *
Percentage Sunshine
*
Historical weather for Riobamba in September
Browse day-by-day weather records for Riobamba spanning 48 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Riobamba historical weather extremes in September
Our historical data for Riobamba spans 2006 to 2025, revealing these weather extremes.
- On September 8, 2019, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- The coldest September day was on September 18, 2006, with a maximum of 12°C (54°F).
- Nighttime temperatures dropped to 0°C (32°F) on September 7, 2018, marking the coldest September night on record.
Best Places in Ecuador in September
Find out more about the weather in Ecuador and which places have the best travel conditions in this month. See all of Ecuador in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Riobamba in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Riobamba 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 Ecuador, check out our Riobamba's climate page.
Temperature Rainfall Sunshine Humidity
See the full Riobamba climate overview or explore weather in Ecuador.
