Weather in Richmond in September 2025
- September is usually the wettest month of the year in Richmond;
Average weather
Average temperature in Richmond in September
The temperature in September is +27°C on average, with a range between a maximum of +37°C during the day and a minimum of +11°C at night.
The average maximum temperature goes down 19% by the end of the month, compared with the beginning of the month, from +28°C to +23°C.
Is Richmond warm or cold in September?
Richmond is typically warm in September.
Maximum temperatures go down compared to the previous month from +30°C to +27°C. The minimum temperature also goes down from +21°C to +17°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Richmond:
Climate in Richmond in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +27°C | +21°C | ||||
| Min. temperature | ||||||
| +10°C | +5°C | -2°C | ||||
| Max. temperature | ||||||
| +40°C | +38°C | +36°C | ||||
| Rainfall | ||||||
| 97 mm | 96 mm | 85 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 75% | 75% | 73% | ||||
| Air pressure | ||||||
| 1015 HPa | 1017 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 4 | 7 | 9 | ||||
| Cloudy days | ||||||
| 9 | 10 | 11 | ||||
| Rainy days | ||||||
| 16 | 13 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +30°C in the day, the average maximum temperature lowers to +27°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 97 mm to 96 mm. Humidity levels don’t change as the month goes on, averaging around 75%. The average wind speed doesn’t change much during September, staying around 2 m/s. The good news is there are likely to be more sunny days in September, from 4 to 7.
But maybe it is worth considering traveling in October as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Richmond is gradually increasing during September, going from 3 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Richmond?
Climate Change over Years
The climate in Richmond in September has not changed much over the last 43 years.
The average temperature was the lowest in 1996 (+19°C) and the highest in 2023 (+22°C). The driest year was 1986 with only 663 mm of rainfall, and the wettest year was 2020 with 1563 mm.
FAQ
Is September a good time to visit Richmond?
Can you sunbathe in Richmond in September?
Is Richmond rainy in September?
Is it sunny in Richmond in September?
Other cities in USA
Monthly weather in Richmond
Source of the data
For this page, we’ve looked at the typical weather in Richmond, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.